sorting + slideshow

# Conflicts:
#	README.md
#	app/src/main/assets/Screenshot_9.jpg

README.md

@@ -1,23 +1,31 @@
+![App banner](media/banner.png)
+
 <div align="center">
-  <img src="app/src/main/assets/logo.png" alt="Calculator Hide File App Logo" width="200" />
 
 # 📂 Calculator Hide File App for Android 📂
 
 <a href="https://github.com/Binondi/Calculator-Hide-Files/releases/latest">
-      <img alt="Latest release" src="https://img.shields.io/badge/Releases-v1.0-blue?logo=github&style=for-the-badge">
+      <img alt="Latest release" src="https://img.shields.io/badge/Releases-v1.4.2-blue?logo=github&style=for-the-badge">
 </a>
 
 <a href="https://github.com/Binondi/Calculator-Hide-Files/releases/latest">
-      <img alt="Downloads" src="https://img.shields.io/badge/Downloads-1.3k-blue?logo=github&style=for-the-badge">
+  <img alt="Downloads" src="https://img.shields.io/badge/downloads-1.1k-blue?logo=github&style=for-the-badge">
 </a>
 
 <a href="LICENSE">
-      <img alt="Apache License 2.0" src="https://img.shields.io/badge/License-Apache_2.0-blue?logo=github&style=for-the-badge">
+  <img alt="Apache License 2.0" src="https://img.shields.io/badge/License-Apache_2.0-blue?logo=github&style=for-the-badge">
 </a>
 
-</div>
 
----
+<br>
+</div>
+<div align="center"> 
+         
+<h4>Download</h4>
+
+<a>[<img src="https://github.com/machiav3lli/oandbackupx/blob/034b226cea5c1b30eb4f6a6f313e4dadcbb0ece4/badge_github.png" alt="Get it on GitHub" height="80">](https://github.com/binondi/Calculator-Hide-Files/releases) </a><a href="https://apt.izzysoft.de/fdroid/index/apk/devs.org.calculator"><img src="https://gitlab.com/IzzyOnDroid/repo/-/raw/master/assets/IzzyOnDroid.png" height="80"></a> <a href="https://www.androidfreeware.net/download-apk-devs-org-calculator.html"><img src="https://www.androidfreeware.net/images/androidfreeware-badge.png" height="80"></a> 
+
+</div>
 
 ## 😍 Why Choose This App?  
 The **Calculator Hide File App** is an **open-source** application, allowing you to inspect the code yourself. This ensures **complete transparency** and guarantees that your **privacy remains uncompromised**. 🔒✅  
@@ -33,37 +41,37 @@ The **Calculator Hide File App** is an innovative **Android file-hiding app** th
 > - Hide images, videos, documents & other files securely.  
 > - Works like a **real calculator** with hidden storage mode.  
 > - No one will suspect it’s a file vault!  
-
+> - **Encrypt** files with your **custom key** to secure your hidden files.
 ---
 
 ## 🚀 Features
 
 ✅ **Dual Functionality** – A working **calculator** & a **file vault** in one app.  
 ✅ **Secret Passcode** – Unlock hidden files by entering a secret code.  
-✅ **Secure File Manager** – Hide/unhide files easily.  
+✅ **Secure File Manager** – Hide/Unhide files easily.  
 ✅ **Fast & Lightweight** – Smooth performance on all Android devices.  
 ✅ **No Root Required** – Works without rooting your phone.  
-
+✅ **Security** – Encrypt & Decrypt files.
 ---
 
 ## 🖼️ Screenshots
 
 <div align="center">
-  <img src="app/src/main/assets/Screenshot_1.jpg" alt="Calculator Hide File App - Home Screen" width="32%">
+  <img src="media/Screenshot_1.jpg" alt="Calculator Hide File App - Home Screen" width="32%">
-  <img src="app/src/main/assets/Screenshot_2.jpg" alt="Calculator Hide File App - Secure File Storage" width="32%">
+  <img src="media/Screenshot_2.jpg" alt="Calculator Hide File App - Secure File Storage" width="32%">
-  <img src="app/src/main/assets/Screenshot_3.jpg" alt="Calculator Hidle File App - Passcode Protection" width="32%">
+  <img src="media/Screenshot_3.jpg" alt="Calculator Hide File App - Passcode Protection" width="32%">
 </div>
 
 <div align="center">
-  <img src="app/src/main/assets/Screenshot_4.jpg" alt="Calculator Hide File App - Hidden Files Manager" width="32%">
+  <img src="media/Screenshot_4.jpg" alt="Calculator Hide File App - Hidden Files Manager" width="32%">
-  <img src="app/src/main/assets/Screenshot_5.jpg" alt="Calculator Hide File App - Hidden Files Manager" width="32%">
+  <img src="media/Screenshot_5.jpg" alt="Calculator Hide File App - Hidden Files Manager" width="32%">
-    <img src="app/src/main/assets/Screenshot_6.jpg" alt="Calculator Hide File App - Hidden Files Manager" width="32%">
+    <img src="media/Screenshot_6.jpg" alt="Calculator Hide File App - Hidden Files Manager" width="32%">
 </div>
 
 <div align="center">
-    <img src="app/src/main/assets/Screenshot_7.jpg" alt="Calculator Hide File App - Hidden Files Manager" width="32%">
+    <img src="media/Screenshot_7.jpg" alt="Calculator Hide File App - Hidden Files Manager" width="32%">
-    <img src="app/src/main/assets/Screenshot_8.jpg" alt="Calculator Hide File App - Hidden Files Manager" width="32%">
+    <img src="media/Screenshot_8.jpg" alt="Calculator Hide File App - Hidden Files Manager" width="32%">
-    <img src="app/src/main/assets/Screenshot_9.jpg" alt="Calculator Hide File App - Hidden Files Manager" width="32%">
+    <img src="media/Screenshot_9.jpg" alt="Calculator Hide File App - Hidden Files Manager" width="32%">
 </div>
 
 ---
@@ -106,7 +114,7 @@ git clone https://github.com/Binondi/Calculator-Hide-Files.git
 ## 🛠️ Technologies Used
 
 - **Programming Language**: Kotlin
-- **UI Framework**: XML (For UI)
+- **UI Framework**: XML
 - **File Storage**: Secure internal storage & MediaStore API  
 
 ---
@@ -125,7 +133,12 @@ If you find this app useful, please consider supporting the development. 🙏
 
 [![Sponsor on GitHub](https://img.shields.io/badge/sponsor-30363D?style=for-the-badge&logo=GitHub-Sponsors&logoColor=#EA4AAA)](https://github.com/sponsors/Binondi)
 [![Donate via PayPal](https://img.shields.io/badge/PayPal-00457C?style=for-the-badge&logo=paypal&logoColor=white)](https://paypal.me/BinondiBorthakur56)
+[![Buy Me a Coffee](https://img.shields.io/badge/Buy%20Me%20a%20Coffee-FFDD00?style=for-the-badge&logo=buy-me-a-coffee&logoColor=black)](https://buymeacoffee.com/binondi)
 
+- **UPI ID** 📱
+``
+binondi@naviaxis
+``
 ---
 
 ## 🔧 Contributing

app/build.gradle.kts

@@ -11,9 +11,10 @@ android {
     defaultConfig {
         applicationId = "devs.org.calculator"
         minSdk = 26
+        //noinspection OldTargetApi
         targetSdk = 34
-        versionCode = 5
+        versionCode = 7
-        versionName = "1.4.0"
+        versionName = "1.4.2"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
@@ -69,6 +70,7 @@ dependencies {
     implementation(libs.androidx.activity)
     implementation(libs.androidx.constraintlayout)
     implementation(libs.androidx.gridlayout)
+    implementation(libs.androidx.lifecycle.process)
     testImplementation(libs.junit)
     androidTestImplementation(libs.androidx.junit)
     androidTestImplementation(libs.androidx.espresso.core)
@@ -81,9 +83,11 @@ dependencies {
     implementation(libs.androidx.viewpager)
     implementation(libs.zoomage)
     implementation(libs.lottie)
+    implementation(libs.androidx.swiperefreshlayout)
 
     // Room dependencies
     implementation(libs.androidx.room.runtime)
     implementation(libs.androidx.room.ktx)
+    //noinspection KaptUsageInsteadOfKsp
     kapt(libs.androidx.room.compiler)
 }

app/release/output-metadata.json

@@ -11,8 +11,8 @@
       "type": "SINGLE",
       "filters": [],
       "attributes": [],
-      "versionCode": 4,
+      "versionCode": 6,
-      "versionName": "1.3",
+      "versionName": "1.4.1",
       "outputFile": "app-release.apk"
     }
   ],

app/src/main/java/devs/org/calculator/activities/HiddenActivity.kt

@@ -11,7 +11,10 @@ import android.view.WindowManager
 import android.widget.EditText
 import android.widget.Toast
 import androidx.activity.OnBackPressedCallback
+import androidx.activity.enableEdgeToEdge
 import androidx.appcompat.app.AppCompatActivity
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
 import androidx.recyclerview.widget.GridLayoutManager
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import devs.org.calculator.R
@@ -47,7 +50,12 @@ class HiddenActivity : AppCompatActivity() {
         fileManager = FileManager(this, this)
         folderManager = FolderManager()
         dialogUtil = DialogUtil(this)
-
+        enableEdgeToEdge()
+        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
+            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
+            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
+            insets
+        }
 
         setupInitialUIState()
         setupClickListeners()
@@ -110,6 +118,13 @@ class HiddenActivity : AppCompatActivity() {
                 binding.folderOrientation.setIconResource(R.drawable.ic_list)
             }
         }
+
+        binding.random.setOnClickListener {
+            val folders = folderManager.getFoldersInDirectory(hiddenDir)
+            val randomIndex = (Math.random() * folders.size).toInt()
+            val folder = folders[randomIndex]
+            startActivity(Intent(this,ViewFolderActivity::class.java).putExtra("folder",folder.toString()))
+        }
     }
 
     private fun showGridUI() {
@@ -391,6 +406,7 @@ class HiddenActivity : AppCompatActivity() {
     }
 
     private fun showFolderViewIcons() {
+        binding.random.visibility = View.VISIBLE
         binding.folderOrientation.visibility = View.VISIBLE
         binding.settings.visibility = View.VISIBLE
         binding.delete.visibility = View.GONE
@@ -404,6 +420,7 @@ class HiddenActivity : AppCompatActivity() {
         }
     }
     private fun showFolderSelectionIcons() {
+        binding.random.visibility = View.GONE
         binding.folderOrientation.visibility = View.GONE
         binding.settings.visibility = View.GONE
         binding.delete.visibility = View.VISIBLE

app/src/main/java/devs/org/calculator/activities/MainActivity.kt

@@ -24,6 +24,10 @@ import devs.org.calculator.utils.PrefsUtil
 import net.objecthunter.exp4j.ExpressionBuilder
 import java.util.regex.Pattern
 import androidx.core.content.edit
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import devs.org.calculator.utils.StoragePermissionUtil
 
 class MainActivity : AppCompatActivity(), DialogActionsCallback, DialogUtil.DialogCallback {
     private lateinit var binding: ActivityMainBinding
@@ -36,6 +40,8 @@ class MainActivity : AppCompatActivity(), DialogActionsCallback, DialogUtil.Dial
     private val dialogUtil = DialogUtil(this)
     private val fileManager = FileManager(this, this)
     private val sp by lazy { getSharedPreferences("app", MODE_PRIVATE) }
+    private lateinit var storagePermissionUtil: StoragePermissionUtil
+    private lateinit var permissionLauncher: ActivityResultLauncher<Array<String>>
 
     @RequiresApi(Build.VERSION_CODES.R)
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -43,15 +49,30 @@ class MainActivity : AppCompatActivity(), DialogActionsCallback, DialogUtil.Dial
         binding = ActivityMainBinding.inflate(layoutInflater)
         setContentView(binding.root)
         enableEdgeToEdge()
+        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
+            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
+            v.setPadding(systemBars.left, 0, systemBars.right, systemBars.bottom)
+            insets
+        }
+
+        permissionLauncher = registerForActivityResult(
+            ActivityResultContracts.RequestMultiplePermissions()
+        ) { permissions ->
+            storagePermissionUtil.handlePermissionResult(permissions)
+        }
+
+        // Initialize StoragePermissionUtil
+        storagePermissionUtil = StoragePermissionUtil(this)
+
         launcher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
             handleActivityResult(result)
         }
-
         if (sp.getBoolean("isFirst", true)){
             binding.display.text = getString(R.string.enter_123456)
         }
 
-        if(!Environment.isExternalStorageManager()) {
+
+        if (!storagePermissionUtil.hasStoragePermission()) {
             dialogUtil.showMaterialDialog(
                 getString(R.string.storage_permission),
                 getString(R.string.to_ensure_the_app_works_properly_and_allows_you_to_easily_hide_or_un_hide_your_private_files_please_grant_storage_access_permission) +
@@ -61,7 +82,10 @@ class MainActivity : AppCompatActivity(), DialogActionsCallback, DialogUtil.Dial
                 getString(R.string.later),
                 object : DialogUtil.DialogCallback {
                     override fun onPositiveButtonClicked() {
-                        fileManager.askPermission(this@MainActivity)
+                        storagePermissionUtil.requestStoragePermission(permissionLauncher) {
+                            Toast.makeText(this@MainActivity, getString(R.string.permission_granted), Toast.LENGTH_SHORT).show()
+                        }
+
                     }
 
                     override fun onNegativeButtonClicked() {
@@ -75,9 +99,11 @@ class MainActivity : AppCompatActivity(), DialogActionsCallback, DialogUtil.Dial
                             getString(R.string.you_can_grant_permission_later_from_settings),
                             Toast.LENGTH_LONG).show()
                     }
-                }
+                })
-            )
         }
+
+
+
         setupNumberButton(binding.btn0, "0")
         setupNumberButton(binding.btn00, "00")
         setupNumberButton(binding.btn1, "1")
@@ -150,7 +176,7 @@ class MainActivity : AppCompatActivity(), DialogActionsCallback, DialogUtil.Dial
     }
 
     private fun clearDisplay() {
-        currentExpression = ""
+        currentExpression = "0"
         binding.total.text = ""
         lastWasOperator = false
         lastWasPercent = false
@@ -335,13 +361,17 @@ class MainActivity : AppCompatActivity(), DialogActionsCallback, DialogUtil.Dial
         }
 
         try {
-            if (currentExpression.isEmpty() ||
+            if (currentExpression.isEmpty()) {
-                (isOperator(currentExpression.last().toString()) && currentExpression.last() != '%')) {
                 binding.total.text = ""
                 return
             }
+
             var processedExpression = currentExpression.replace("×", "*")
 
+            if (isOperator(processedExpression.last().toString())) {
+                processedExpression = processedExpression.substring(0, processedExpression.length - 1)
+            }
+
             if (processedExpression.contains("%")) {
                 processedExpression = preprocessExpression(processedExpression)
             }

app/src/main/java/devs/org/calculator/activities/PreviewActivity.kt

@@ -4,9 +4,13 @@ import android.net.Uri
 import android.os.Bundle
 import android.os.Handler
 import android.os.Looper
+import android.view.View
 import android.view.WindowManager
 import android.widget.Toast
+import androidx.activity.enableEdgeToEdge
 import androidx.appcompat.app.AppCompatActivity
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
 import androidx.lifecycle.lifecycleScope
 import androidx.viewpager2.widget.ViewPager2
 import devs.org.calculator.R
@@ -18,6 +22,7 @@ import devs.org.calculator.utils.DialogUtil
 import devs.org.calculator.utils.FileManager
 import devs.org.calculator.utils.PrefsUtil
 import devs.org.calculator.utils.SecurityUtils
+import kotlinx.coroutines.Runnable
 import kotlinx.coroutines.launch
 import java.io.File
 
@@ -37,12 +42,33 @@ class PreviewActivity : AppCompatActivity() {
     private val hiddenFileRepository: HiddenFileRepository by lazy {
         HiddenFileRepository(AppDatabase.getDatabase(this).hiddenFileDao())
     }
+    private var slideshowRunning = false
+    private val slideshowDelay = 2000L
+
+    private val slideshowRunner = object : Runnable {
+        override fun run() {
+            if (slideshowRunning) {
+                if (currentPosition + 1 >= files.size) {
+                    currentPosition = 0
+                } else {
+                    currentPosition += 1
+                }
+                binding.viewPager.setCurrentItem(currentPosition, true)
+                mainHandler.postDelayed(this, slideshowDelay)
+            }
+        }
+    }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         binding = ActivityPreviewBinding.inflate(layoutInflater)
         setContentView(binding.root)
-
+        enableEdgeToEdge()
+        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
+            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
+            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
+            insets
+        }
         fileManager = FileManager(this, this)
 
         currentPosition = intent.getIntExtra("position", 0)
@@ -126,6 +152,11 @@ class PreviewActivity : AppCompatActivity() {
 
         adapter = ImagePreviewAdapter(this, this)
         adapter.images = files
+        adapter.onSlideshowShouldStop = {
+            if (slideshowRunning) {
+                stopSlideshow()
+            }
+        }
         binding.viewPager.adapter = adapter
         if (currentPosition < files.size) {
             binding.viewPager.setCurrentItem(currentPosition, false)
@@ -171,6 +202,34 @@ class PreviewActivity : AppCompatActivity() {
                 currentPosition = position
             }
         })
+        if (filetype != FileManager.FileType.IMAGE) {
+            binding.startSlideshow.visibility = View.GONE
+        }
+        binding.startSlideshow.setOnClickListener {
+            startSlideshow()
+        }
+    }
+
+    private fun startSlideshow() {
+        if (!slideshowRunning) {
+            slideshowRunning = true
+            toggleToolbars()
+            mainHandler.postDelayed(slideshowRunner, slideshowDelay)
+            adapter.setImageZoomable(false)
+        }
+    }
+
+    private fun stopSlideshow() {
+        slideshowRunning = false
+        toggleToolbars()
+        mainHandler.removeCallbacks(slideshowRunner)
+        adapter.setImageZoomable(true)
+    }
+
+    private fun toggleToolbars() {
+        val visibility = if (slideshowRunning) View.GONE else View.VISIBLE
+        binding.toolbar.visibility = visibility
+        binding.footer.visibility = visibility
     }
 
     private fun handleDeleteFile() {

app/src/main/java/devs/org/calculator/activities/SecureBaseActivity.kt

@@ -0,0 +1,43 @@
+package devs.org.calculator.activities
+
+import android.content.Intent
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import androidx.lifecycle.DefaultLifecycleObserver
+import androidx.lifecycle.LifecycleOwner
+import androidx.lifecycle.ProcessLifecycleOwner
+
+abstract class SecureBaseActivity : AppCompatActivity() {
+
+    class AppLifecycleObserver : DefaultLifecycleObserver {
+        companion object {
+            var wasInBackground = false
+        }
+
+        override fun onStart(owner: LifecycleOwner) {
+            wasInBackground = true
+        }
+
+        override fun onStop(owner: LifecycleOwner) {
+            wasInBackground = false
+        }
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        ProcessLifecycleOwner.get().lifecycle.addObserver(AppLifecycleObserver())
+    }
+
+    override fun onResume() {
+        super.onResume()
+
+        if (AppLifecycleObserver.wasInBackground) {
+            AppLifecycleObserver.wasInBackground = false
+            val intent = Intent(this, MainActivity::class.java)
+            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK)
+            startActivity(intent)
+            finish()
+        }
+    }
+
+}

app/src/main/java/devs/org/calculator/activities/SettingsActivity.kt

@@ -6,9 +6,12 @@ import android.view.View
 import android.view.WindowManager
 import android.widget.EditText
 import android.widget.Toast
+import androidx.activity.enableEdgeToEdge
 import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.core.net.toUri
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
 import com.google.android.material.color.DynamicColors
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.snackbar.Snackbar
@@ -29,6 +32,12 @@ class SettingsActivity : AppCompatActivity() {
         binding = ActivitySettingsBinding.inflate(layoutInflater)
         setContentView(binding.root)
         prefs = PrefsUtil(this)
+        enableEdgeToEdge()
+        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
+            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
+            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
+            insets
+        }
         DEV_GITHUB_URL = getString(R.string.github_profile)
         GITHUB_URL = getString(R.string.calculator_hide_files, DEV_GITHUB_URL)
         setupUI()

app/src/main/java/devs/org/calculator/activities/SetupPasswordActivity.kt

@@ -5,7 +5,10 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.widget.TextView
 import android.widget.Toast
+import androidx.activity.enableEdgeToEdge
 import androidx.appcompat.app.AppCompatActivity
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
 import com.google.android.material.color.DynamicColors
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.textfield.TextInputEditText
@@ -26,7 +29,12 @@ class SetupPasswordActivity : AppCompatActivity() {
         binding = ActivitySetupPasswordBinding.inflate(layoutInflater)
         binding2 = ActivityChangePasswordBinding.inflate(layoutInflater)
         setContentView(binding.root)
-
+        enableEdgeToEdge()
+        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
+            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
+            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
+            insets
+        }
         prefsUtil = PrefsUtil(this)
         hasPassword = prefsUtil.hasPassword()
 

app/src/main/java/devs/org/calculator/activities/ViewFolderActivity.kt

@@ -7,7 +7,6 @@ import android.os.Bundle
 import android.os.Environment
 import android.os.Handler
 import android.os.Looper
-import android.util.Log
 import android.view.LayoutInflater
 import android.view.View
 import android.view.animation.Animation
@@ -23,7 +22,6 @@ import androidx.recyclerview.widget.RecyclerView
 import com.google.android.material.bottomsheet.BottomSheetDialog
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import devs.org.calculator.R
-import devs.org.calculator.adapters.FileAdapter
 import devs.org.calculator.adapters.FolderSelectionAdapter
 import devs.org.calculator.callbacks.FileProcessCallback
 import devs.org.calculator.database.HiddenFileEntity
@@ -41,6 +39,11 @@ import java.io.File
 import android.widget.CheckBox
 import android.widget.CompoundButton
 import android.app.AlertDialog
+import android.view.WindowManager
+import androidx.activity.enableEdgeToEdge
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
+import devs.org.calculator.adapters.FileAdapter
 
 class ViewFolderActivity : AppCompatActivity() {
 
@@ -71,6 +74,12 @@ class ViewFolderActivity : AppCompatActivity() {
 
         binding = ActivityViewFolderBinding.inflate(layoutInflater)
         setContentView(binding.root)
+        enableEdgeToEdge()
+        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
+            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
+            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
+            insets
+        }
         setupAnimations()
         initialize()
         setupClickListeners()
@@ -142,16 +151,19 @@ class ViewFolderActivity : AppCompatActivity() {
                 customDialog?.dismiss()
                 customDialog = null
                 updateFilesToAdapter()
+                refreshCurrentFolder()
             }, remainingTime)
         } else {
             customDialog?.dismiss()
             customDialog = null
+            refreshCurrentFolder()
             updateFilesToAdapter()
         }
     }
 
     private fun updateFilesToAdapter() {
-        openFolder(currentFolder!!)
+        val files = folderManager.getFilesInFolder(currentFolder!!)
+        fileAdapter?.submitList(files)
     }
 
 
@@ -199,6 +211,16 @@ class ViewFolderActivity : AppCompatActivity() {
 
                                 mainHandler.postDelayed({
                                     dismissCustomDialog()
+                                    val files = folderManager.getFilesInFolder(targetFolder)
+                                    if (files.isNotEmpty()) {
+                                        binding.swipeLayout.visibility = View.VISIBLE
+                                        binding.noItems.visibility = View.GONE
+                                        if (fileAdapter == null) {
+                                            showFileList(files, targetFolder)
+                                        } else {
+                                            fileAdapter?.submitList(files.toMutableList())
+                                        }
+                                    }
                                 }, 1000)
                             }
                         }
@@ -223,6 +245,7 @@ class ViewFolderActivity : AppCompatActivity() {
                     ).show()
                     dismissCustomDialog()
                 }
+                e.printStackTrace()
             }
         }
     }
@@ -230,9 +253,19 @@ class ViewFolderActivity : AppCompatActivity() {
     override fun onResume() {
         super.onResume()
         refreshCurrentFolder()
+        setupFlagSecure()
     }
 
-    private fun openFolder(folder: File) {
+    private fun setupFlagSecure() {
+        if (prefs.getBoolean("screenshot_restriction", true)) {
+            window.setFlags(
+                WindowManager.LayoutParams.FLAG_SECURE,
+                WindowManager.LayoutParams.FLAG_SECURE
+            )
+        }
+    }
+
+    fun openFolder(folder: File) {
         if (!folder.exists()) {
             folder.mkdirs()
             File(folder, ".nomedia").createNewFile()
@@ -246,11 +279,12 @@ class ViewFolderActivity : AppCompatActivity() {
         } else {
             showEmptyState()
         }
+        binding.swipeLayout.isRefreshing = false
     }
 
     private fun showEmptyState() {
         binding.noItems.visibility = View.VISIBLE
-        binding.recyclerView.visibility = View.GONE
+        binding.swipeLayout.visibility = View.GONE
     }
 
     private fun showFileList(files: List<File>, folder: File) {
@@ -261,17 +295,20 @@ class ViewFolderActivity : AppCompatActivity() {
             onFolderLongClick = { isSelected ->
                 handleFileSelectionModeChange(isSelected)
             }).apply {
-            setFileOperationCallback(object : FileAdapter.FileOperationCallback {
+            setFilesOperationCallback(object : FileAdapter.FilesOperationCallback {
                 override fun onFileDeleted(file: File) {
                     refreshCurrentFolder()
+                    updateFilesToAdapter()
                 }
 
                 override fun onFileRenamed(oldFile: File, newFile: File) {
                     refreshCurrentFolder()
+                    updateFilesToAdapter()
                 }
 
                 override fun onRefreshNeeded() {
                     refreshCurrentFolder()
+                    updateFilesToAdapter()
                 }
 
                 override fun onSelectionModeChanged(isSelectionMode: Boolean, selectedCount: Int) {
@@ -287,9 +324,13 @@ class ViewFolderActivity : AppCompatActivity() {
         }
 
         binding.recyclerView.adapter = fileAdapter
-        binding.recyclerView.visibility = View.VISIBLE
+        binding.swipeLayout.visibility = View.VISIBLE
         binding.noItems.visibility = View.GONE
 
+        binding.selectAllButton.setOnClickListener {
+            fileAdapter?.toggleSelectAll()
+        }
+
         binding.menuButton.setOnClickListener {
             fileAdapter?.let { adapter ->
                 showFileOptionsMenu(adapter.getSelectedItems())
@@ -381,10 +422,10 @@ class ViewFolderActivity : AppCompatActivity() {
                                 getString(R.string.decrypt_file) -> {
                                     lifecycleScope.launch {
                                         val filesWithoutMetadata = selectedFiles.filter { file ->
-                                            file.name.endsWith(ENCRYPTED_EXTENSION) && 
+                                            file.name.endsWith(ENCRYPTED_EXTENSION) &&
                                             fileAdapter?.hiddenFileRepository?.getHiddenFileByPath(file.absolutePath)?.isEncrypted != true
                                         }
-                                        
+
                                         if (filesWithoutMetadata.isNotEmpty()) {
                                             showDecryptionTypeDialog(filesWithoutMetadata)
                                         } else {
@@ -455,21 +496,18 @@ class ViewFolderActivity : AppCompatActivity() {
         lifecycleScope.launch {
             var successCount = 0
             var failCount = 0
+            val decryptedFiles = mutableMapOf<File, File>()
 
             for (file in selectedFiles) {
                 try {
                     val hiddenFile = fileAdapter?.hiddenFileRepository?.getHiddenFileByPath(file.absolutePath)
 
-                    
                     if (hiddenFile?.isEncrypted == true) {
-
                         val originalExtension = hiddenFile.originalExtension
                         val decryptedFile = SecurityUtils.changeFileExtension(file, originalExtension)
 
-                        
                         if (SecurityUtils.decryptFile(this@ViewFolderActivity, file, decryptedFile)) {
                             if (decryptedFile.exists() && decryptedFile.length() > 0) {
-
                                 hiddenFile.let {
                                     fileAdapter?.hiddenFileRepository?.updateEncryptionStatus(
                                         filePath = file.absolutePath,
@@ -479,27 +517,23 @@ class ViewFolderActivity : AppCompatActivity() {
                                     )
                                 }
                                 if (file.delete()) {
-
+                                    decryptedFiles[file] = decryptedFile
                                     successCount++
                                 } else {
-
                                     decryptedFile.delete()
                                     failCount++
                                 }
                             } else {
-
                                 decryptedFile.delete()
                                 failCount++
                             }
                         } else {
-
                             if (decryptedFile.exists()) {
                                 decryptedFile.delete()
                             }
                             failCount++
                         }
                     } else if (file.name.endsWith(ENCRYPTED_EXTENSION) && hiddenFile == null) {
-
                         val extension = when (fileType) {
                             FileManager.FileType.IMAGE -> ".jpg"
                             FileManager.FileType.VIDEO -> ".mp4"
@@ -509,11 +543,8 @@ class ViewFolderActivity : AppCompatActivity() {
                         
                         val decryptedFile = SecurityUtils.changeFileExtension(file, extension)
 
-                        
                         if (SecurityUtils.decryptFile(this@ViewFolderActivity, file, decryptedFile)) {
                             if (decryptedFile.exists() && decryptedFile.length() > 0) {
-
-
                                 fileAdapter?.hiddenFileRepository?.insertHiddenFile(
                                     HiddenFileEntity(
                                         filePath = decryptedFile.absolutePath,
@@ -525,37 +556,32 @@ class ViewFolderActivity : AppCompatActivity() {
                                     )
                                 )
                                 if (file.delete()) {
-
+                                    decryptedFiles[file] = decryptedFile
                                     successCount++
                                 } else {
-
                                     decryptedFile.delete()
                                     failCount++
                                 }
                             } else {
-
                                 decryptedFile.delete()
                                 failCount++
                             }
                         } else {
-
                             if (decryptedFile.exists()) {
                                 decryptedFile.delete()
                             }
                             failCount++
                         }
                     } else {
-
                         failCount++
                     }
                 } catch (e: Exception) {
-
                     failCount++
+                    e.printStackTrace()
                 }
             }
 
             mainHandler.post {
-                fileAdapter?.exitSelectionMode()
                 when {
                     successCount > 0 && failCount == 0 -> {
                         Toast.makeText(this@ViewFolderActivity, "Decrypted $successCount file(s)", Toast.LENGTH_SHORT).show()
@@ -567,7 +593,10 @@ class ViewFolderActivity : AppCompatActivity() {
                         Toast.makeText(this@ViewFolderActivity, "Failed to decrypt $failCount file(s)", Toast.LENGTH_SHORT).show()
                     }
                 }
-                refreshCurrentFolder()
+                if (successCount > 0) {
+                    refreshCurrentFolder()
+                    fileAdapter?.exitSelectionMode()
+                }
             }
         }
     }
@@ -627,10 +656,19 @@ class ViewFolderActivity : AppCompatActivity() {
                     val files = folderManager.getFilesInFolder(folder)
                     mainHandler.post {
                         if (files.isNotEmpty()) {
-                            binding.recyclerView.visibility = View.VISIBLE
+                            binding.swipeLayout.visibility = View.VISIBLE
                             binding.noItems.visibility = View.GONE
 
-                            fileAdapter?.submitList(files.toMutableList())
+                            val currentFiles = fileAdapter?.currentList ?: emptyList()
+                            val hasChanges = files.size != currentFiles.size || 
+                                files.any { newFile -> 
+                                    currentFiles.none { it.absolutePath == newFile.absolutePath }
+                                }
+
+                            if (hasChanges) {
+                                fileAdapter?.submitList(files.toMutableList())
+                            }
+
                             fileAdapter?.let { adapter ->
                                 if (adapter.isInSelectionMode()) {
                                     showFileSelectionIcons()
@@ -642,8 +680,7 @@ class ViewFolderActivity : AppCompatActivity() {
                             showEmptyState()
                         }
                     }
-                } catch (e: Exception) {
+                } catch (_: Exception) {
-
                     mainHandler.post {
                         showEmptyState()
                     }
@@ -659,6 +696,9 @@ class ViewFolderActivity : AppCompatActivity() {
         binding.back.setOnClickListener {
             finish()
         }
+        binding.swipeLayout.setOnRefreshListener {
+            openFolder(currentFolder!!)
+        }
 
         binding.addImage.setOnClickListener { openFilePicker("image/*") }
         binding.addVideo.setOnClickListener { openFilePicker("video/*") }
@@ -726,6 +766,7 @@ class ViewFolderActivity : AppCompatActivity() {
 
     private fun showFileViewIcons() {
         binding.menuButton.visibility = View.GONE
+        binding.selectAllButton.visibility = View.GONE
         binding.fabExpend.visibility = View.VISIBLE
         binding.addImage.visibility = View.INVISIBLE
         binding.addVideo.visibility = View.INVISIBLE
@@ -737,6 +778,7 @@ class ViewFolderActivity : AppCompatActivity() {
 
     private fun showFileSelectionIcons() {
         binding.menuButton.visibility = View.VISIBLE
+        binding.selectAllButton.visibility = View.VISIBLE
         binding.fabExpend.visibility = View.GONE
         binding.addImage.visibility = View.INVISIBLE
         binding.addVideo.visibility = View.INVISIBLE
@@ -748,6 +790,7 @@ class ViewFolderActivity : AppCompatActivity() {
     private fun performFileUnhiding(selectedFiles: List<File>) {
         lifecycleScope.launch {
             var allUnhidden = true
+            val unhiddenFiles = mutableListOf<File>()
             selectedFiles.forEach { file ->
                 try {
                     val hiddenFile = fileAdapter?.hiddenFileRepository?.getHiddenFileByPath(file.absolutePath)
@@ -767,6 +810,7 @@ class ViewFolderActivity : AppCompatActivity() {
                                         }
                                         file.delete()
                                         decryptedFile.delete()
+                                        unhiddenFiles.add(file)
                                     } else {
                                         decryptedFile.delete()
                                         allUnhidden = false
@@ -794,6 +838,7 @@ class ViewFolderActivity : AppCompatActivity() {
                                     fileAdapter?.hiddenFileRepository?.deleteHiddenFile(it)
                                 }
                                 file.delete()
+                                unhiddenFiles.add(file)
                             } else {
                                 allUnhidden = false
                             }
@@ -802,8 +847,8 @@ class ViewFolderActivity : AppCompatActivity() {
                         }
                     }
                 } catch (e: Exception) {
-
                     allUnhidden = false
+                    e.printStackTrace()
                 }
             }
 
@@ -815,8 +860,8 @@ class ViewFolderActivity : AppCompatActivity() {
                 }
 
                 Toast.makeText(this@ViewFolderActivity, message, Toast.LENGTH_SHORT).show()
-                fileAdapter?.exitSelectionMode()
                 refreshCurrentFolder()
+                fileAdapter?.exitSelectionMode()
             }
         }
     }
@@ -824,17 +869,19 @@ class ViewFolderActivity : AppCompatActivity() {
     private fun performFileDeletion(selectedFiles: List<File>) {
         lifecycleScope.launch {
             var allDeleted = true
+            val deletedFiles = mutableListOf<File>()
             selectedFiles.forEach { file ->
                 try {
                     val hiddenFile = fileAdapter?.hiddenFileRepository?.getHiddenFileByPath(file.absolutePath)
                     hiddenFile?.let {
                         fileAdapter?.hiddenFileRepository?.deleteHiddenFile(it)
                     }
-                    if (!file.delete()) {
+                    if (file.delete()) {
+                        deletedFiles.add(file)
+                    } else {
                         allDeleted = false
                     }
-                } catch (e: Exception) {
+                } catch (_: Exception) {
-
                     allDeleted = false
                 }
             }
@@ -847,8 +894,8 @@ class ViewFolderActivity : AppCompatActivity() {
                 }
 
                 Toast.makeText(this@ViewFolderActivity, message, Toast.LENGTH_SHORT).show()
-                fileAdapter?.exitSelectionMode()
                 refreshCurrentFolder()
+                fileAdapter?.exitSelectionMode()
             }
         }
     }
@@ -862,6 +909,7 @@ class ViewFolderActivity : AppCompatActivity() {
     private fun copyFilesToFolder(selectedFiles: List<File>, destinationFolder: File) {
         lifecycleScope.launch {
             var allCopied = true
+            val copiedFiles = mutableListOf<File>()
             selectedFiles.forEach { file ->
                 try {
                     val newFile = File(destinationFolder, file.name)
@@ -880,17 +928,18 @@ class ViewFolderActivity : AppCompatActivity() {
                             )
                         )
                     }
+                    copiedFiles.add(file)
                 } catch (e: Exception) {
-
                     allCopied = false
+                    e.printStackTrace()
                 }
             }
 
             mainHandler.post {
                 val message = if (allCopied) getString(R.string.files_copied_successfully) else getString(R.string.some_files_could_not_be_copied)
                 Toast.makeText(this@ViewFolderActivity, message, Toast.LENGTH_SHORT).show()
-                fileAdapter?.exitSelectionMode()
                 refreshCurrentFolder()
+                fileAdapter?.exitSelectionMode()
             }
         }
     }
@@ -898,6 +947,7 @@ class ViewFolderActivity : AppCompatActivity() {
     private fun moveFilesToFolder(selectedFiles: List<File>, destinationFolder: File) {
         lifecycleScope.launch {
             var allMoved = true
+            val movedFiles = mutableListOf<File>()
             selectedFiles.forEach { file ->
                 try {
                     val newFile = File(destinationFolder, file.name)
@@ -913,22 +963,27 @@ class ViewFolderActivity : AppCompatActivity() {
                         )
                     }
                     
-                    file.delete()
+                    if (file.delete()) {
+                        movedFiles.add(file)
+                    } else {
+                        allMoved = false
+                    }
                 } catch (e: Exception) {
-
                     allMoved = false
+                    e.printStackTrace()
                 }
             }
 
             mainHandler.post {
                 val message = if (allMoved) getString(R.string.files_moved_successfully) else getString(R.string.some_files_could_not_be_moved)
                 Toast.makeText(this@ViewFolderActivity, message, Toast.LENGTH_SHORT).show()
-                fileAdapter?.exitSelectionMode()
                 refreshCurrentFolder()
+                fileAdapter?.exitSelectionMode()
             }
         }
     }
 
+    @SuppressLint("InflateParams")
     private fun showFolderSelectionDialog(onFolderSelected: (File) -> Unit) {
         val folders = folderManager.getFoldersInDirectory(hiddenDir)
             .filter { it != currentFolder }

app/src/main/java/devs/org/calculator/adapters/FileDiffCallback.kt

@@ -37,6 +37,10 @@ class FileDiffCallback : DiffUtil.ItemCallback<File>() {
             changes.add("EXISTENCE_CHANGED")
         }
 
+        if (oldItem.absolutePath != newItem.absolutePath) {
+            changes.add("FILE_CHANGED")
+        }
+
         return changes.ifEmpty { null }
     }
 }

app/src/main/java/devs/org/calculator/adapters/ImagePreviewAdapter.kt

@@ -5,6 +5,7 @@ import android.media.MediaPlayer
 import android.net.Uri
 import android.os.Handler
 import android.os.Looper
+import android.util.Log
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -35,11 +36,14 @@ class ImagePreviewAdapter(
     private val hiddenFileRepository: HiddenFileRepository by lazy {
         HiddenFileRepository(AppDatabase.getDatabase(context).hiddenFileDao())
     }
+    private var canZoomOnImages: Boolean = true
 
     var images: List<File>
         get() = differ.currentList
         set(value) = differ.submitList(value)
 
+    var onSlideshowShouldStop: () -> Unit = {}
+
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ImageViewHolder {
         val binding = ViewpagerItemsBinding.inflate(LayoutInflater.from(context), parent, false)
         return ImageViewHolder(binding)
@@ -55,6 +59,11 @@ class ImagePreviewAdapter(
 
     override fun getItemCount(): Int = images.size
 
+    fun setImageZoomable(zoomable: Boolean) {
+        currentViewHolder?.setImageViewCanZoom(zoomable)
+        canZoomOnImages = zoomable
+    }
+
     private fun stopAndResetCurrentAudio() {
         currentViewHolder?.stopAndResetAudio()
         currentPlayingPosition = -1
@@ -71,112 +80,142 @@ class ImagePreviewAdapter(
         private var currentPosition = 0
         private var tempDecryptedFile: File? = null
 
-        fun bind(file: File, position: Int,decryptedFileType: FileManager.FileType) {
+        fun bind(file: File, position: Int, decryptedFileType: FileManager.FileType) {
             currentPosition = position
 
             releaseMediaPlayer()
             resetAudioUI()
             cleanupTempFile()
+            
             try {
                 lifecycleOwner.lifecycleScope.launch {
                     val hiddenFile = hiddenFileRepository.getHiddenFileByPath(file.absolutePath)
-                    if (hiddenFile != null){
+                    if (hiddenFile != null) {
                         val isEncrypted = hiddenFile.isEncrypted
                         val fileType = hiddenFile.fileType
                         if (isEncrypted) {
-                            val tempDecryptedFile = getDecryptedPreviewFile(context, hiddenFile)
+                            tempDecryptedFile = getDecryptedPreviewFile(context, hiddenFile)
-                            if (tempDecryptedFile != null && tempDecryptedFile.exists() && tempDecryptedFile.length() > 0) {
+                            if (tempDecryptedFile != null && tempDecryptedFile!!.exists() && tempDecryptedFile!!.length() > 0) {
-                                displayFile(tempDecryptedFile, fileType,true)
+                                displayFile(tempDecryptedFile!!, fileType, true)
                             } else {
+                                Log.e("ImagePreviewAdapter", "Failed to get decrypted preview file for: ${file.absolutePath}")
                                 showEncryptedError()
                             }
                         } else {
-                            displayFile(file, decryptedFileType,false)
+                            displayFile(file, decryptedFileType, false)
                         }
-                    }else{
+                    } else {
-                        displayFile(file, decryptedFileType,false)
+                        displayFile(file, decryptedFileType, false)
                     }
-
                 }
-
+            } catch (e: Exception) {
-            } catch (_: Exception) {
+                Log.e("ImagePreviewAdapter", "Error in bind: ${e.message}")
-
+                displayFile(file, decryptedFileType, false)
-                displayFile(file, decryptedFileType,false)
             }
-
         }
 
-        private fun displayFile(file: File, fileType: FileManager.FileType,isEncrypted: Boolean = false) {
+        private fun displayFile(file: File, fileType: FileManager.FileType, isEncrypted: Boolean = false) {
-            val uri = getUriForPreviewFile(context, file)
+            try {
-            when (fileType) {
+                val uri = if (isEncrypted) {
-                FileManager.FileType.VIDEO -> {
+                    getUriForPreviewFile(context, file)
-                    binding.imageView.visibility = View.GONE
+                } else {
-                    binding.audioBg.visibility = View.GONE
+                    Uri.fromFile(file)
-                    binding.videoView.visibility = View.VISIBLE
+                }
 
-                    val videoUri = if (isEncrypted){
+                if (uri == null) {
-                        uri
+                    Log.e("ImagePreviewAdapter", "Failed to get URI for file: ${file.absolutePath}")
-                    }else{
+                    showEncryptedError()
-                        Uri.fromFile(file)
+                    return
-                    }
+                }
-                    binding.videoView.setVideoURI(videoUri)
-                    binding.videoView.start()
 
-                    val mediaController = MediaController(context)
+                when (fileType) {
-                    mediaController.setAnchorView(binding.videoView)
+                    FileManager.FileType.VIDEO -> {
-                    binding.videoView.setMediaController(mediaController)
+                        binding.imageView.visibility = View.GONE
+                        binding.audioBg.visibility = View.GONE
+                        binding.videoView.visibility = View.VISIBLE
 
-                    mediaController.setPrevNextListeners(
+                        binding.videoView.setVideoURI(uri)
-                        {
+                        binding.videoView.start()
+
+                        val mediaController = MediaController(context)
+                        mediaController.setAnchorView(binding.videoView)
+                        binding.videoView.setMediaController(mediaController)
+
+                        mediaController.setPrevNextListeners(
+                            {
+                                val nextPosition = (adapterPosition + 1) % images.size
+                                playVideoAtPosition(nextPosition)
+                            },
+                            {
+                                val prevPosition = if (adapterPosition - 1 < 0) images.size - 1 else adapterPosition - 1
+                                playVideoAtPosition(prevPosition)
+                            }
+                        )
+
+                        binding.videoView.setOnCompletionListener {
                             val nextPosition = (adapterPosition + 1) % images.size
                             playVideoAtPosition(nextPosition)
-                        },
-                        {
-                            val prevPosition = if (adapterPosition - 1 < 0) images.size - 1 else adapterPosition - 1
-                            playVideoAtPosition(prevPosition)
                         }
-                    )
+                    }
+                    FileManager.FileType.IMAGE -> {
+                        binding.imageView.visibility = View.VISIBLE
+                        binding.videoView.visibility = View.GONE
+                        binding.audioBg.visibility = View.GONE
+                        binding.imageView.isZoomable = canZoomOnImages
+                        binding.imageView.doubleTapToZoom = canZoomOnImages
+                        binding.imageView.setOnClickListener {
+                            onSlideshowShouldStop()
+                        }
+                        Glide.with(context)
+                            .load(uri)
+                            .error(R.drawable.encrypted)
+                            .into(binding.imageView)
+                    }
+                    FileManager.FileType.AUDIO -> {
+                        val audioFile: File? = if (isEncrypted) {
+                            getFileFromUri(context, uri)
+                        } else {
+                            file
+                        }
+                        if (audioFile == null) {
+                            Log.e("ImagePreviewAdapter", "Failed to get audio file from URI")
+                            showEncryptedError()
+                            return
+                        }
+                        binding.imageView.visibility = View.GONE
+                        binding.audioBg.visibility = View.VISIBLE
+                        binding.videoView.visibility = View.GONE
+                        binding.audioTitle.text = file.name
 
-                    binding.videoView.setOnCompletionListener {
+                        setupAudioPlayer(audioFile)
-                        val nextPosition = (adapterPosition + 1) % images.size
+                        setupPlaybackControls()
-                        playVideoAtPosition(nextPosition)
+                    }
+                    else -> {
+                        binding.imageView.visibility = View.VISIBLE
+                        binding.audioBg.visibility = View.GONE
+                        binding.videoView.visibility = View.GONE
+                        binding.imageView.isZoomable = canZoomOnImages
+                        binding.imageView.doubleTapToZoom = canZoomOnImages
+                        binding.imageView.setOnClickListener {
+                            onSlideshowShouldStop()
+                        }
+                        Glide.with(context)
+                            .load(uri)
+                            .error(R.drawable.encrypted)
+                            .into(binding.imageView)
                     }
                 }
-                FileManager.FileType.IMAGE -> {
+            } catch (e: Exception) {
-                    val imageUri = if (isEncrypted){
+                Log.e("ImagePreviewAdapter", "Error displaying file: ${e.message}")
-                        uri
+                showEncryptedError()
-                    }else{
-                        Uri.fromFile(file)
-                    }
-                    binding.imageView.visibility = View.VISIBLE
-                    binding.videoView.visibility = View.GONE
-                    binding.audioBg.visibility = View.GONE
-                    Glide.with(context)
-                        .load(imageUri)
-                        .into(binding.imageView)
-                }
-                FileManager.FileType.AUDIO -> {
-                    val audioFile: File? = if (isEncrypted) {
-                        getFileFromUri(context, uri!!)
-                    } else {
-                        file
-                    }
-                    binding.imageView.visibility = View.GONE
-                    binding.audioBg.visibility = View.VISIBLE
-                    binding.videoView.visibility = View.GONE
-                    binding.audioTitle.text = file.name
-
-                    setupAudioPlayer(audioFile!!)
-                    setupPlaybackControls()
-                }
-                else -> {
-                    binding.imageView.visibility = View.VISIBLE
-                    binding.audioBg.visibility = View.GONE
-                    binding.videoView.visibility = View.GONE
-                }
             }
         }
 
+        fun setImageViewCanZoom(zoomEnabled: Boolean) {
+            binding.imageView.doubleTapToZoom = zoomEnabled
+            binding.imageView.isZoomable = zoomEnabled
+        }
+
         fun getFileFromUri(context: Context, uri: Uri): File? {
             return try {
                 val inputStream = context.contentResolver.openInputStream(uri)
@@ -199,11 +238,12 @@ class ImagePreviewAdapter(
         }
 
         private fun cleanupTempFile() {
-            tempDecryptedFile?.let { file ->
+            tempDecryptedFile?.let {
-                if (file.exists()) {
+                if (it.exists()) {
                     try {
-                        file.delete()
+                        it.delete()
-                    } catch (_: Exception) {
+                    } catch (e: Exception) {
+                        Log.e("ImagePreviewAdapter", "Error cleaning up temp file: ${e.message}")
                     }
                 }
                 tempDecryptedFile = null

app/src/main/java/devs/org/calculator/utils/FileManager.kt

@@ -1,5 +1,6 @@
 package devs.org.calculator.utils
 
+import android.Manifest
 import android.app.Activity
 import android.app.RecoverableSecurityException
 import android.content.ActivityNotFoundException
@@ -8,6 +9,8 @@ import android.content.Intent
 import android.net.Uri
 import android.os.Build
 import android.os.Environment
+import android.os.Handler
+import android.os.Looper
 import android.provider.MediaStore
 import android.provider.Settings
 import android.webkit.MimeTypeMap
@@ -15,29 +18,23 @@ import android.widget.Toast
 import androidx.activity.result.ActivityResultLauncher
 import androidx.activity.result.IntentSenderRequest
 import androidx.core.app.ActivityCompat
+import androidx.core.content.FileProvider
 import androidx.documentfile.provider.DocumentFile
 import androidx.lifecycle.LifecycleOwner
 import androidx.lifecycle.lifecycleScope
 import devs.org.calculator.callbacks.FileProcessCallback
+import devs.org.calculator.database.AppDatabase
+import devs.org.calculator.database.HiddenFileEntity
+import devs.org.calculator.database.HiddenFileRepository
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import java.io.File
-import android.Manifest
-import androidx.core.content.FileProvider
-import devs.org.calculator.R
-import devs.org.calculator.database.AppDatabase
-import devs.org.calculator.database.HiddenFileRepository
-import devs.org.calculator.utils.PrefsUtil
-import android.util.Log
-import devs.org.calculator.database.HiddenFileEntity
-import java.io.FileOutputStream
 
 class FileManager(private val context: Context, private val lifecycleOwner: LifecycleOwner) {
     private lateinit var intentSenderLauncher: ActivityResultLauncher<IntentSenderRequest>
     val intent = Intent()
-    private val prefs: PrefsUtil by lazy { PrefsUtil(context) }
     val hiddenFileRepository: HiddenFileRepository by lazy {
         HiddenFileRepository(AppDatabase.getDatabase(context).hiddenFileDao())
     }
@@ -67,15 +64,6 @@ class FileManager(private val context: Context, private val lifecycleOwner: Life
         return dir
     }
 
-    fun getFilesInHiddenDir(type: FileType): List<File> {
-        val hiddenDir = getHiddenDirectory()
-        val typeDir = File(hiddenDir, type.dirName)
-        if (!typeDir.exists()) {
-            typeDir.mkdirs()
-            File(typeDir, ".nomedia").createNewFile()
-        }
-        return typeDir.listFiles()?.filterNotNull()?.filter { it.name != ".nomedia" } ?: emptyList()
-    }
     fun getFilesInHiddenDirFromFolder(type: FileType, folder: String): List<File> {
         val typeDir = File(folder)
         if (!typeDir.exists()) {
@@ -117,8 +105,6 @@ class FileManager(private val context: Context, private val lifecycleOwner: Life
                 throw Exception("File copy failed")
             }
 
-            // Encrypt file if encryption is enabled
-
             // Media scan the new file to hide it
             val mediaScanIntent = Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE)
             mediaScanIntent.data = Uri.fromFile(targetDir)
@@ -137,7 +123,7 @@ class FileManager(private val context: Context, private val lifecycleOwner: Life
             val contentResolver = context.contentResolver
 
             // Get the target directory
-            val targetDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
+            val targetDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES + "/Restore")
             targetDir.mkdirs()
 
             // Create target file
@@ -172,62 +158,6 @@ class FileManager(private val context: Context, private val lifecycleOwner: Life
             null
         }
     }
-
-    fun unHideFile(file: File, onSuccess: (() -> Unit)? = null, onError: ((String) -> Unit)? = null) {
-        lifecycleOwner.lifecycleScope.launch(Dispatchers.IO) {
-            try {
-                // Create target directory (Downloads)
-                val targetDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
-                targetDir.mkdirs()
-
-                // Create target file with same name or timestamp
-                val targetFile = File(targetDir, file.name)
-
-                // If file with same name exists, add timestamp
-                val finalTargetFile = if (targetFile.exists()) {
-                    val nameWithoutExt = file.nameWithoutExtension
-                    val extension = file.extension
-                    File(targetDir, "${nameWithoutExt}_${System.currentTimeMillis()}.${extension}")
-                } else {
-                    targetFile
-                }
-
-                // Check if file is encrypted
-                if (file.extension == ENCRYPTED_EXTENSION) {
-                    // Decrypt file
-                    val decryptedFile = SecurityUtils.changeFileExtension(file, SecurityUtils.getFileExtension(file))
-                    if (SecurityUtils.decryptFile(context, file, decryptedFile)) {
-                        decryptedFile.copyTo(finalTargetFile, overwrite = false)
-                        decryptedFile.delete()
-                    } else {
-                        throw Exception("Failed to decrypt file")
-                    }
-                } else {
-                    // Copy file content
-                    file.copyTo(finalTargetFile, overwrite = false)
-                }
-
-                // Verify copy success
-                if (!finalTargetFile.exists() || finalTargetFile.length() == 0L) {
-                    throw Exception("File copy failed")
-                }
-
-                // Media scan the new file
-                val mediaScanIntent = Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE)
-                mediaScanIntent.data = Uri.fromFile(finalTargetFile)
-                context.sendBroadcast(mediaScanIntent)
-
-                withContext(Dispatchers.Main) {
-                    onSuccess?.invoke()
-                }
-            } catch (e: Exception) {
-                e.printStackTrace()
-                withContext(Dispatchers.Main) {
-                    onError?.invoke(e.message ?: "Unknown error occurred")
-                }
-            }
-        }
-    }
     
     suspend fun deletePhotoFromExternalStorage(photoUri: Uri) {
         withContext(Dispatchers.IO) {
@@ -235,7 +165,7 @@ class FileManager(private val context: Context, private val lifecycleOwner: Life
                 // First try to delete using DocumentFile
                 val documentFile = DocumentFile.fromSingleUri(context, photoUri)
                 if (documentFile?.exists() == true && documentFile.canWrite()) {
-                    val deleted = documentFile.delete()
+                    documentFile.delete()
                     withContext(Dispatchers.Main) {
 //                            Toast.makeText(context, "File deleted successfully", Toast.LENGTH_SHORT).show()
                     }
@@ -400,5 +330,141 @@ class FileManager(private val context: Context, private val lifecycleOwner: Life
         ALL("all")
     }
 
+    fun performEncryption(selectedFiles: List<File>,onEncryptionEnded :(MutableMap<File, File>)-> Unit) {
+        lifecycleOwner.lifecycleScope.launch {
+            var successCount = 0
+            var failCount = 0
+            val encryptedFiles = mutableMapOf<File, File>()
+
+            for (file in selectedFiles) {
+                try {
+                    val hiddenFile = hiddenFileRepository.getHiddenFileByPath(file.absolutePath)
+                    if (hiddenFile?.isEncrypted == true) continue
+                    val originalExtension = ".${file.extension.lowercase()}"
+                    val fileType = FileManager(context,lifecycleOwner).getFileType(file)
+                    val encryptedFile = SecurityUtils.changeFileExtension(file, devs.org.calculator.utils.FileManager.ENCRYPTED_EXTENSION)
+                    if (SecurityUtils.encryptFile(context, file, encryptedFile)) {
+                        if (encryptedFile.exists()) {
+                            if (hiddenFile == null){
+                                hiddenFileRepository.insertHiddenFile(
+                                    HiddenFileEntity(
+                                        filePath = encryptedFile.absolutePath,
+                                        isEncrypted = true,
+                                        encryptedFileName = encryptedFile.name,
+                                        fileType = fileType,
+                                        fileName = file.name,
+                                        originalExtension = originalExtension
+                                    )
+                                )
+                            }else{
+                                hiddenFile.let {
+                                    hiddenFileRepository.updateEncryptionStatus(
+                                        filePath = hiddenFile.filePath,
+                                        newFilePath = encryptedFile.absolutePath,
+                                        encryptedFileName = encryptedFile.name,
+                                        isEncrypted = true
+                                    )
+                                }
+                            }
+                            if (file.delete()) {
+                                encryptedFiles[file] = encryptedFile
+                                successCount++
+                            } else {
+                                failCount++
+                            }
+                        } else {
+                            failCount++
+                        }
+                    } else {
+                        failCount++
+                    }
+                } catch (e: Exception) {
+                    failCount++
+                }
+            }
+
+            Handler(Looper.getMainLooper()).post{
+                when {
+                    successCount > 0 && failCount == 0 -> {
+                        Toast.makeText(context, "Files encrypted successfully", Toast.LENGTH_SHORT).show()
+                        onEncryptionEnded(encryptedFiles)
+                    }
+                    successCount > 0 && failCount > 0 -> {
+                        Toast.makeText(context, "Some files could not be encrypted", Toast.LENGTH_SHORT).show()
+                        onEncryptionEnded(encryptedFiles)
+                    }
+                    else -> {
+                        Toast.makeText(context, "Failed to encrypt files", Toast.LENGTH_SHORT).show()
+                        onEncryptionEnded(encryptedFiles)
+                    }
+                }
+            }
+        }
+    }
+
+    fun performDecryption(selectedFiles: List<File>,onDecryptionEnded :(MutableMap<File, File>) -> Unit) {
+        lifecycleOwner.lifecycleScope.launch {
+            var successCount = 0
+            var failCount = 0
+            val decryptedFiles = mutableMapOf<File, File>()
+
+            for (file in selectedFiles) {
+                try {
+                    val hiddenFile = hiddenFileRepository.getHiddenFileByPath(file.absolutePath)
+                    if (hiddenFile?.isEncrypted == true) {
+                        val originalExtension = hiddenFile.originalExtension
+                        val decryptedFile = SecurityUtils.changeFileExtension(file, originalExtension)
+                        if (SecurityUtils.decryptFile(context, file, decryptedFile)) {
+                            if (decryptedFile.exists() && decryptedFile.length() > 0) {
+                                hiddenFile.let {
+                                    hiddenFileRepository.updateEncryptionStatus(
+                                        filePath = file.absolutePath,
+                                        newFilePath = decryptedFile.absolutePath,
+                                        encryptedFileName = decryptedFile.name,
+                                        isEncrypted = false
+                                    )
+                                }
+                                if (file.delete()) {
+                                    decryptedFiles[file] = decryptedFile
+                                    successCount++
+                                } else {
+                                    decryptedFile.delete()
+                                    failCount++
+                                }
+                            } else {
+                                decryptedFile.delete()
+                                failCount++
+                            }
+                        } else {
+                            if (decryptedFile.exists()) {
+                                decryptedFile.delete()
+                            }
+                            failCount++
+                        }
+                    }
+                } catch (e: Exception) {
+                    failCount++
+                }
+            }
+
+            Handler(Looper.getMainLooper()).post{
+                when {
+                    successCount > 0 && failCount == 0 -> {
+                        Toast.makeText(context, "Files decrypted successfully", Toast.LENGTH_SHORT).show()
+                        onDecryptionEnded(decryptedFiles)
+                    }
+                    successCount > 0 && failCount > 0 -> {
+                        Toast.makeText(context, "Some files could not be decrypted", Toast.LENGTH_SHORT).show()
+                        onDecryptionEnded(decryptedFiles)
+                    }
+                    else -> {
+                        Toast.makeText(context, "Failed to decrypt files", Toast.LENGTH_SHORT).show()
+                        onDecryptionEnded(decryptedFiles)
+                    }
+                }
+            }
+        }
+    }
+
 
 }

app/src/main/java/devs/org/calculator/utils/FolderManager.kt

@@ -39,7 +39,7 @@ class FolderManager {
             directory.listFiles()?.filter { it.isDirectory && it.name != ".nomedia" } ?: emptyList()
         } else {
             emptyList()
-        }
+        }.sortedBy { it.name.lowercase() }
     }
 
     fun getFilesInFolder(folder: File): List<File> {

app/src/main/java/devs/org/calculator/utils/SecurityUtils.kt

@@ -17,11 +17,13 @@ import android.content.SharedPreferences
 import androidx.core.content.FileProvider
 import devs.org.calculator.database.HiddenFileEntity
 import androidx.core.content.edit
+import android.util.Log
 
 object SecurityUtils {
     private const val ALGORITHM = "AES"
     private const val TRANSFORMATION = "AES/CBC/PKCS5Padding"
     private const val KEY_SIZE = 256
+    val ENCRYPTED_EXTENSION = ".enc"
 
     private fun getSecretKey(context: Context): SecretKey {
         val keyStore = context.getSharedPreferences("keystore", Context.MODE_PRIVATE)
@@ -109,44 +111,59 @@ object SecurityUtils {
         try {
             val encryptedFile = File(meta.filePath)
             if (!encryptedFile.exists()) {
+                Log.e("SecurityUtils", "Encrypted file does not exist: ${meta.filePath}")
                 return null
             }
 
             val tempDir = File(context.cacheDir, "preview_temp")
-            if (!tempDir.exists()) tempDir.mkdirs()
+            if (!tempDir.exists()) {
+                if (!tempDir.mkdirs()) {
+                    Log.e("SecurityUtils", "Failed to create temp directory")
+                    return null
+                }
+            }
+
+            // Clean up old preview files
+            tempDir.listFiles()?.forEach { 
+                if (it.lastModified() < System.currentTimeMillis() - 5 * 60 * 1000) { // 5 minutes
+                    it.delete()
+                }
+            }
 
             val tempFile = File(tempDir, "preview_${System.currentTimeMillis()}_${meta.fileName}")
-
+            
-            tempDir.listFiles()?.forEach { it.delete() }
-
             val success = decryptFile(context, encryptedFile, tempFile)
             
             if (success && tempFile.exists() && tempFile.length() > 0) {
                 return tempFile
             } else {
+                Log.e("SecurityUtils", "Failed to decrypt preview file: ${meta.filePath}")
                 if (tempFile.exists()) tempFile.delete()
                 return null
             }
-        } catch (_: Exception) {
+        } catch (e: Exception) {
+            Log.e("SecurityUtils", "Error in getDecryptedPreviewFile: ${e.message}")
             return null
         }
     }
 
-
     fun getUriForPreviewFile(context: Context, file: File): Uri? {
         return try {
+            if (!file.exists() || file.length() == 0L) {
+                Log.e("SecurityUtils", "Preview file does not exist or is empty: ${file.absolutePath}")
+                return null
+            }
             FileProvider.getUriForFile(
                 context,
-                "${context.packageName}.provider", // Must match AndroidManifest
+                "${context.packageName}.provider",
                 file
             )
-        } catch (_: Exception) {
+        } catch (e: Exception) {
+            Log.e("SecurityUtils", "Error getting URI for preview file: ${e.message}")
             null
         }
     }
 
-
-
     fun decryptFile(context: Context, inputFile: File, outputFile: File): Boolean {
         return try {
             if (!inputFile.exists()) {

app/src/main/java/devs/org/calculator/utils/StoragePermissionUtil.kt

@@ -7,6 +7,7 @@ import android.net.Uri
 import android.os.Build
 import android.os.Environment
 import android.provider.Settings
+import androidx.activity.result.ActivityResultLauncher
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.app.ActivityCompat
@@ -15,20 +16,15 @@ import androidx.core.content.PermissionChecker
 import androidx.core.net.toUri
 
 class StoragePermissionUtil(private val activity: AppCompatActivity) {
-    
-    private val requestPermissionLauncher = activity.registerForActivityResult(
-        ActivityResultContracts.RequestMultiplePermissions()
-    ) { permissions ->
-        if (permissions.all { it.value }) {
-            onPermissionGranted?.invoke()
-        }
-    }
 
     private var onPermissionGranted: (() -> Unit)? = null
 
-    fun requestStoragePermission(onGranted: () -> Unit) {
+    fun requestStoragePermission(
+        launcher: ActivityResultLauncher<Array<String>>,
+        onGranted: () -> Unit
+    ) {
         onPermissionGranted = onGranted
-        
+
         when {
             Build.VERSION.SDK_INT >= Build.VERSION_CODES.R -> {
                 if (Environment.isExternalStorageManager()) {
@@ -45,7 +41,7 @@ class StoragePermissionUtil(private val activity: AppCompatActivity) {
                     Manifest.permission.READ_EXTERNAL_STORAGE,
                     Manifest.permission.WRITE_EXTERNAL_STORAGE
                 )
-                requestPermissionLauncher.launch(permissions)
+                launcher.launch(permissions)
             }
         }
     }
@@ -66,4 +62,10 @@ class StoragePermissionUtil(private val activity: AppCompatActivity) {
                     writePermission == PermissionChecker.PERMISSION_GRANTED
         }
     }
-} 
+
+    fun handlePermissionResult(permissions: Map<String, Boolean>) {
+        if (permissions.all { it.value }) {
+            onPermissionGranted?.invoke()
+        }
+    }
+}

app/src/main/res/drawable/ic_dice.xml

@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#FFFFFF" android:viewportHeight="960" android:viewportWidth="960" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M340,680Q365,680 382.5,662.5Q400,645 400,620Q400,595 382.5,577.5Q365,560 340,560Q315,560 297.5,577.5Q280,595 280,620Q280,645 297.5,662.5Q315,680 340,680ZM340,400Q365,400 382.5,382.5Q400,365 400,340Q400,315 382.5,297.5Q365,280 340,280Q315,280 297.5,297.5Q280,315 280,340Q280,365 297.5,382.5Q315,400 340,400ZM620,680Q645,680 662.5,662.5Q680,645 680,620Q680,595 662.5,577.5Q645,560 620,560Q595,560 577.5,577.5Q560,595 560,620Q560,645 577.5,662.5Q595,680 620,680ZM620,400Q645,400 662.5,382.5Q680,365 680,340Q680,315 662.5,297.5Q645,280 620,280Q595,280 577.5,297.5Q560,315 560,340Q560,365 577.5,382.5Q595,400 620,400ZM200,840Q167,840 143.5,816.5Q120,793 120,760L120,200Q120,167 143.5,143.5Q167,120 200,120L760,120Q793,120 816.5,143.5Q840,167 840,200L840,760Q840,793 816.5,816.5Q793,840 760,840L200,840ZM200,760L760,760Q760,760 760,760Q760,760 760,760L760,200Q760,200 760,200Q760,200 760,200L200,200Q200,200 200,200Q200,200 200,200L200,760Q200,760 200,760Q200,760 200,760ZM200,200L200,200Q200,200 200,200Q200,200 200,200L200,760Q200,760 200,760Q200,760 200,760L200,760Q200,760 200,760Q200,760 200,760L200,200Q200,200 200,200Q200,200 200,200Z"/>
+    
+</vector>

app/src/main/res/drawable/ic_select_all.xml

@@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#FFFFFF" android:viewportHeight="960" android:viewportWidth="960" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M268,720L42,494L99,438L269,608L269,608L325,664L268,720ZM494,720L268,494L324,437L494,607L862,239L918,296L494,720ZM494,494L437,438L635,240L692,296L494,494Z"/>
+    
+</vector>

app/src/main/res/drawable/ic_slideshow.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="24dp"
+    android:viewportHeight="24"
+    android:viewportWidth="24"
+    android:width="24dp">
+    <path
+        android:fillColor="@color/svgTintColor"
+        android:pathData="M10,8v8l5,-4 -5,-4zM19,3L5,3c-1.1,0 -2,0.9 -2,2v14c0,1.1 0.9,2 2,2h14c1.1,0 2,-0.9 2,-2L21,5c0,-1.1 -0.9,-2 -2,-2zM19,19L5,19L5,5h14v14z"/>
+</vector>

app/src/main/res/layout/activity_change_password.xml

@@ -5,74 +5,86 @@
     android:id="@+id/main"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:padding="16dp"
     tools:context=".activities.SetupPasswordActivity">
 
-    <com.google.android.material.textview.MaterialTextView
+    <LinearLayout
-        android:id="@+id/tvTitle"
+        android:layout_width="match_parent"
-        android:layout_width="wrap_content"
+        android:layout_height="0dp"
-        android:layout_height="wrap_content"
+        android:gravity="center_horizontal"
-        android:text="@string/change_password"
+        android:orientation="vertical"
-        android:textSize="24sp"
+        android:padding="18dp"
-        android:textStyle="bold"
+        app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintTop_toTopOf="parent">
 
-    <com.google.android.material.textfield.TextInputLayout
+        <com.google.android.material.textview.MaterialTextView
-        android:id="@+id/tilOldPassword"
+            android:id="@+id/tvTitle"
-        android:layout_width="match_parent"
+            android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_marginTop="32dp"
+            android:text="@string/change_password"
-        android:hint="@string/enter_old_password"
+            android:textSize="24sp"
-        app:endIconMode="password_toggle"
+            android:textStyle="bold"
-        app:layout_constraintTop_toBottomOf="@id/tvTitle">
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
 
-        <com.google.android.material.textfield.TextInputEditText
+        <com.google.android.material.textfield.TextInputLayout
-            android:id="@+id/etOldPassword"
+            android:id="@+id/tilOldPassword"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:imeOptions="actionNext"
+            android:layout_marginTop="32dp"
-            android:singleLine="true"
+            android:hint="@string/enter_old_password"
-            android:inputType="number" />
+            app:endIconMode="password_toggle"
-    </com.google.android.material.textfield.TextInputLayout>
+            app:layout_constraintTop_toBottomOf="@id/tvTitle">
 
-    <com.google.android.material.textfield.TextInputLayout
+            <com.google.android.material.textfield.TextInputEditText
-        android:id="@+id/tilNewPassword"
+                android:id="@+id/etOldPassword"
-        android:layout_width="match_parent"
+                android:layout_width="match_parent"
-        android:layout_height="wrap_content"
+                android:layout_height="wrap_content"
-        android:layout_marginTop="16dp"
+                android:imeOptions="actionNext"
-        android:hint="@string/enter_new_password"
+                android:inputType="number"
-        app:endIconMode="password_toggle"
+                android:singleLine="true" />
-        app:layout_constraintTop_toBottomOf="@id/tilOldPassword">
+        </com.google.android.material.textfield.TextInputLayout>
 
-        <com.google.android.material.textfield.TextInputEditText
+        <com.google.android.material.textfield.TextInputLayout
-            android:id="@+id/etNewPassword"
+            android:id="@+id/tilNewPassword"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:imeOptions="actionNext"
+            android:layout_marginTop="16dp"
-            android:singleLine="true"
+            android:hint="@string/enter_new_password"
-            android:inputType="number" />
+            app:endIconMode="password_toggle"
-    </com.google.android.material.textfield.TextInputLayout>
+            app:layout_constraintTop_toBottomOf="@id/tilOldPassword">
 
-    <com.google.android.material.button.MaterialButton
+            <com.google.android.material.textfield.TextInputEditText
-        android:id="@+id/btnChangePassword"
+                android:id="@+id/etNewPassword"
-        android:layout_width="match_parent"
+                android:layout_width="match_parent"
-        android:layout_height="50dp"
+                android:layout_height="wrap_content"
-        android:layout_marginTop="32dp"
+                android:imeOptions="actionNext"
-        android:padding="12dp"
+                android:inputType="number"
-        android:text="@string/change_password"
+                android:singleLine="true" />
-        app:layout_constraintTop_toBottomOf="@id/tilNewPassword" />
+        </com.google.android.material.textfield.TextInputLayout>
 
-    <com.google.android.material.button.MaterialButton
+        <com.google.android.material.button.MaterialButton
-        android:id="@+id/btnResetPassword"
+            android:id="@+id/btnChangePassword"
-        style="@style/Widget.MaterialComponents.Button.TextButton"
+            android:layout_width="match_parent"
-        android:layout_width="wrap_content"
+            android:layout_height="50dp"
-        android:layout_height="wrap_content"
+            android:layout_marginTop="32dp"
-        android:layout_marginTop="8dp"
+            android:padding="12dp"
-        android:text="@string/forgot_password"
+            android:text="@string/change_password"
-        app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/tilNewPassword" />
-        app:layout_constraintStart_toStartOf="parent"
+
-        app:layout_constraintTop_toBottomOf="@id/btnChangePassword" />
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/btnResetPassword"
+            style="@style/Widget.MaterialComponents.Button.TextButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:text="@string/forgot_password"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/btnChangePassword" />
+
+    </LinearLayout>
 
 </androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/activity_hidden.xml

@@ -60,6 +60,12 @@
             app:icon="@drawable/ic_more"
             style="@style/Widget.Material3.Button.IconButton"/>
 
+        <com.google.android.material.button.MaterialButton
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:icon="@drawable/ic_dice"
+            style="@style/Widget.Material3.Button.IconButton"
+            android:id="@+id/random" />
         <com.google.android.material.button.MaterialButton
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"

app/src/main/res/layout/activity_main.xml

@@ -48,7 +48,7 @@
                     android:gravity="end|bottom"
                     android:autoSizeTextType="uniform"
                     android:padding="10dp"
-                    android:text=""
+                    android:text="0"
                     android:textSize="70sp"
                     tools:ignore="Suspicious0dp" />
             </LinearLayout>

app/src/main/res/layout/activity_preview.xml

@@ -2,6 +2,7 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
+    android:id="@+id/main"
     android:layout_height="match_parent"
     android:orientation="vertical">
 
@@ -13,6 +14,7 @@
         android:orientation="horizontal"
         android:gravity="center_vertical"
         android:paddingLeft="15dp"
+        android:paddingRight="15dp"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" >
         <androidx.appcompat.widget.AppCompatImageButton
@@ -25,11 +27,20 @@
             android:id="@+id/back"/>
         <TextView
             android:id="@+id/title"
-            android:layout_width="wrap_content"
+            android:layout_width="0dp"
             android:textSize="22sp"
             android:layout_height="wrap_content"
             android:textStyle="bold"
-            android:text="@string/preview_file"/>
+            android:text="@string/preview_file"
+            android:layout_weight="1"/>
+        <androidx.appcompat.widget.AppCompatImageButton
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            android:src="@drawable/ic_slideshow"
+            android:scaleType="fitCenter"
+            android:background="#00000000"
+            android:padding="8dp"
+            android:id="@+id/start_slideshow"/>
     </LinearLayout>
 
     <androidx.viewpager2.widget.ViewPager2
@@ -43,6 +54,7 @@
         app:layout_constraintTop_toTopOf="parent" />
 
     <LinearLayout
+        android:id="@+id/footer"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:gravity="center_horizontal"

app/src/main/res/layout/activity_settings.xml

@@ -3,6 +3,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
+    android:id="@+id/main"
     android:layout_height="match_parent"
     tools:context=".activities.SettingsActivity">
 

app/src/main/res/layout/activity_setup_password.xml

@@ -5,104 +5,116 @@
     android:id="@+id/main"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:padding="16dp"
     tools:context=".activities.SetupPasswordActivity">
 
-    <com.google.android.material.textview.MaterialTextView
+    <LinearLayout
-        android:id="@+id/tvTitle"
+        android:layout_width="match_parent"
-        android:layout_width="wrap_content"
+        android:layout_height="0dp"
-        android:layout_height="wrap_content"
+        android:orientation="vertical"
-        android:text="@string/setup_password"
+        android:padding="18dp"
-        android:textSize="24sp"
+        android:gravity="center_horizontal"
-        android:textStyle="bold"
+        app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintTop_toTopOf="parent">
 
-    <com.google.android.material.textfield.TextInputLayout
-        android:id="@+id/tilPassword"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:layout_marginTop="32dp"
-        android:hint="@string/enter_password"
-        app:endIconMode="password_toggle"
-        app:layout_constraintTop_toBottomOf="@id/tvTitle">
 
-        <com.google.android.material.textfield.TextInputEditText
+        <com.google.android.material.textview.MaterialTextView
-            android:id="@+id/etPassword"
+            android:id="@+id/tvTitle"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/setup_password"
+            android:textSize="24sp"
+            android:textStyle="bold"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <com.google.android.material.textfield.TextInputLayout
+            android:id="@+id/tilPassword"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:imeOptions="actionNext"
+            android:layout_marginTop="32dp"
-            android:singleLine="true"
+            android:hint="@string/enter_password"
-            android:inputType="number" />
+            app:endIconMode="password_toggle"
-    </com.google.android.material.textfield.TextInputLayout>
+            app:layout_constraintTop_toBottomOf="@id/tvTitle">
 
-    <com.google.android.material.textfield.TextInputLayout
+            <com.google.android.material.textfield.TextInputEditText
-        android:id="@+id/tilConfirmPassword"
+                android:id="@+id/etPassword"
-        android:layout_width="match_parent"
+                android:layout_width="match_parent"
-        android:layout_height="wrap_content"
+                android:layout_height="wrap_content"
-        android:layout_marginTop="16dp"
+                android:imeOptions="actionNext"
-        android:hint="@string/confirm_password"
+                android:inputType="number"
-        app:endIconMode="password_toggle"
+                android:singleLine="true" />
-        app:layout_constraintTop_toBottomOf="@id/tilPassword">
+        </com.google.android.material.textfield.TextInputLayout>
 
-        <com.google.android.material.textfield.TextInputEditText
+        <com.google.android.material.textfield.TextInputLayout
-            android:id="@+id/etConfirmPassword"
+            android:id="@+id/tilConfirmPassword"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:imeOptions="actionNext"
+            android:layout_marginTop="16dp"
-            android:singleLine="true"
+            android:hint="@string/confirm_password"
-            android:inputType="number" />
+            app:endIconMode="password_toggle"
-    </com.google.android.material.textfield.TextInputLayout>
+            app:layout_constraintTop_toBottomOf="@id/tilPassword">
 
-    <com.google.android.material.textfield.TextInputLayout
+            <com.google.android.material.textfield.TextInputEditText
-        android:id="@+id/tilSecurityQuestion"
+                android:id="@+id/etConfirmPassword"
-        android:layout_width="match_parent"
+                android:layout_width="match_parent"
-        android:layout_height="wrap_content"
+                android:layout_height="wrap_content"
-        android:layout_marginTop="16dp"
+                android:imeOptions="actionNext"
-        android:hint="@string/security_question_for_password_reset"
+                android:inputType="number"
-        app:layout_constraintTop_toBottomOf="@id/tilConfirmPassword">
+                android:singleLine="true" />
+        </com.google.android.material.textfield.TextInputLayout>
 
-        <com.google.android.material.textfield.TextInputEditText
+        <com.google.android.material.textfield.TextInputLayout
-            android:id="@+id/etSecurityQuestion"
+            android:id="@+id/tilSecurityQuestion"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:inputType="text" />
+            android:layout_marginTop="16dp"
-    </com.google.android.material.textfield.TextInputLayout>
+            android:hint="@string/security_question_for_password_reset"
+            app:layout_constraintTop_toBottomOf="@id/tilConfirmPassword">
 
-    <com.google.android.material.textfield.TextInputLayout
+            <com.google.android.material.textfield.TextInputEditText
-        android:id="@+id/tilSecurityAnswer"
+                android:id="@+id/etSecurityQuestion"
-        android:layout_width="match_parent"
+                android:layout_width="match_parent"
-        android:layout_height="wrap_content"
+                android:layout_height="wrap_content"
-        android:layout_marginTop="16dp"
+                android:inputType="text" />
-        android:hint="@string/security_answer"
+        </com.google.android.material.textfield.TextInputLayout>
-        app:layout_constraintTop_toBottomOf="@id/tilSecurityQuestion">
 
-        <com.google.android.material.textfield.TextInputEditText
+        <com.google.android.material.textfield.TextInputLayout
-            android:id="@+id/etSecurityAnswer"
+            android:id="@+id/tilSecurityAnswer"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:inputType="text" />
+            android:layout_marginTop="16dp"
-    </com.google.android.material.textfield.TextInputLayout>
+            android:hint="@string/security_answer"
+            app:layout_constraintTop_toBottomOf="@id/tilSecurityQuestion">
 
-    <com.google.android.material.button.MaterialButton
+            <com.google.android.material.textfield.TextInputEditText
-        android:id="@+id/btnSavePassword"
+                android:id="@+id/etSecurityAnswer"
-        android:layout_width="match_parent"
+                android:layout_width="match_parent"
-        android:layout_height="wrap_content"
+                android:layout_height="wrap_content"
-        android:layout_marginTop="32dp"
+                android:inputType="text" />
-        android:padding="12dp"
+        </com.google.android.material.textfield.TextInputLayout>
-        android:text="@string/save_password"
-        app:layout_constraintTop_toBottomOf="@id/tilSecurityAnswer" />
 
-    <com.google.android.material.button.MaterialButton
+        <com.google.android.material.button.MaterialButton
-        android:id="@+id/btnResetPassword"
+            android:id="@+id/btnSavePassword"
-        style="@style/Widget.MaterialComponents.Button.TextButton"
+            android:layout_width="match_parent"
-        android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
-        android:layout_height="wrap_content"
+            android:layout_marginTop="32dp"
-        android:layout_marginTop="8dp"
+            android:padding="12dp"
-        android:text="@string/forgot_password"
+            android:text="@string/save_password"
-        app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/tilSecurityAnswer" />
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/btnSavePassword" />
 
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/btnResetPassword"
+            style="@style/Widget.MaterialComponents.Button.TextButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:text="@string/forgot_password"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/btnSavePassword" />
+
+    </LinearLayout>
 </androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/activity_view_folder.xml

@@ -39,26 +39,40 @@
             android:layout_weight="1"
             android:id="@+id/folderName"/>
 
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/selectAllButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:icon="@drawable/ic_select_all"
+            android:visibility="gone"
+            style="@style/Widget.Material3.Button.IconButton"/>
 
         <com.google.android.material.button.MaterialButton
             android:id="@+id/menuButton"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             app:icon="@drawable/ic_more"
+            android:visibility="gone"
             style="@style/Widget.Material3.Button.IconButton"/>
 
     </LinearLayout>
 
-    <androidx.recyclerview.widget.RecyclerView
+    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
-        android:id="@+id/recyclerView"
         android:layout_width="match_parent"
-        android:layout_height="0dp"
+        android:id="@+id/swipeLayout"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/toolBar">
+        app:layout_constraintTop_toBottomOf="@+id/toolBar"
+        android:layout_height="0dp">
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/recyclerView"
+            android:layout_width="match_parent"
+            android:layout_height="0dp">
+
+        </androidx.recyclerview.widget.RecyclerView>
+    </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
 
-    </androidx.recyclerview.widget.RecyclerView>
 
     <LinearLayout
         android:id="@+id/noItems"

app/src/main/res/layout/bottom_sheet_folder_selection.xml

@@ -4,6 +4,7 @@
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:orientation="vertical"
+
     android:padding="16dp">
 
     <androidx.cardview.widget.CardView

app/src/main/res/layout/list_item_file.xml

@@ -35,8 +35,7 @@
                         android:layout_width="match_parent"
                         android:layout_height="match_parent"
                         android:layout_gravity="center"
-                        android:scaleType="centerCrop"
+                        android:scaleType="centerCrop"/>
-                        android:src="@drawable/add_image" />
                     <View
                         android:id="@+id/shade"
                         android:layout_width="match_parent"

app/src/main/res/values/strings.xml

@@ -1,5 +1,6 @@
 <resources>
-    <string name="app_name">Calculator</string>
+    <string name="app_name" translatable="false">Calculator</string>
+    <string name="version" translatable="false">Version 1.4.1</string>
     <string name="invalid_message">Invalid Value Entered</string>
     <string name="add_image">Add Image</string>
     <string name="add_audio">Add Audio</string>
@@ -121,7 +122,6 @@
     <string name="app_settings">App Settings</string>
     <string name="restrict_screenshots_in_hidden_section">Restrict Screenshots in Hidden Section</string>
     <string name="security_settings">Security Settings</string>
-    <string name="version">Version 1.4.0</string>
     <string name="app_details">App Details</string>
     <string name="setup_password">Setup Password</string>
     <string name="security_question_for_password_reset">Security Question (For Password Reset)</string>

gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-agp = "8.9.3"
+agp = "8.11.1"
 documentfile = "1.1.0"
 exp4j = "0.4.8"
 glide = "4.16.0"
@@ -8,7 +8,7 @@ coreKtx = "1.16.0"
 junit = "4.13.2"
 junitVersion = "1.2.1"
 espressoCore = "3.6.1"
-appcompat = "1.7.0"
+appcompat = "1.7.1"
 lottie = "6.2.0"
 material = "1.12.0"
 activity = "1.10.1"
@@ -17,8 +17,10 @@ materialColorUtilities = "1.3.0"
 gridlayout = "1.1.0"
 photoview = "2.3.0"
 roomRuntime = "2.7.1"
+swiperefreshlayout = "1.2.0-beta01"
 viewpager = "1.1.0"
 zoomage = "1.3.1"
+lifecycleProcess = "2.9.2"
 
 [libraries]
 androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
@@ -26,6 +28,7 @@ androidx-documentfile = { module = "androidx.documentfile:documentfile", version
 androidx-room-compiler = { module = "androidx.room:room-compiler", version.ref = "roomRuntime" }
 androidx-room-ktx = { module = "androidx.room:room-ktx", version.ref = "roomRuntime" }
 androidx-room-runtime = { module = "androidx.room:room-runtime", version.ref = "roomRuntime" }
+androidx-swiperefreshlayout = { module = "androidx.swiperefreshlayout:swiperefreshlayout", version.ref = "swiperefreshlayout" }
 androidx-viewpager = { module = "androidx.viewpager:viewpager", version.ref = "viewpager" }
 exp4j = { module = "net.objecthunter:exp4j", version.ref = "exp4j" }
 glide = { module = "com.github.bumptech.glide:glide", version.ref = "glide" }
@@ -41,6 +44,7 @@ material-color-utilities = { module = "com.google.android.material:material-colo
 androidx-gridlayout = { group = "androidx.gridlayout", name = "gridlayout", version.ref = "gridlayout" }
 photoview = { module = "com.github.chrisbanes:PhotoView", version.ref = "photoview" }
 zoomage = { module = "com.jsibbold:zoomage", version.ref = "zoomage" }
+androidx-lifecycle-process = { group = "androidx.lifecycle", name = "lifecycle-process", version.ref = "lifecycleProcess" }
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 #Sun Nov 03 19:53:13 IST 2024
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.11.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists