✨

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

@@ -6,13 +6,17 @@ import android.os.Bundle
 import android.widget.Toast
 import androidx.activity.result.ActivityResultLauncher
 import androidx.activity.result.contract.ActivityResultContracts
+import androidx.lifecycle.lifecycleScope
 import devs.org.calculator.utils.FileManager
+import devs.org.calculator.utils.FileProcessCallback
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import java.io.File
 
-class AudioGalleryActivity : BaseGalleryActivity() {
+class AudioGalleryActivity : BaseGalleryActivity(), FileProcessCallback {
     override val fileType = FileManager.FileType.AUDIO
     private lateinit var pickAudioLauncher: ActivityResultLauncher<Intent>
-    private var selectedUri: Uri? = null
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -20,25 +24,35 @@ class AudioGalleryActivity : BaseGalleryActivity() {
 
         pickAudioLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
             if (result.resultCode == RESULT_OK) {
-                val uri = result.data?.data
-                if (uri != null) {
-                    selectedUri = uri
-                    try {
-                        val file = fileManager.copyFileToHiddenDir(selectedUri!!, fileType)
-                        if (file != null && file.exists()) {
-                            Toast.makeText(this, "File hidden successfully", Toast.LENGTH_SHORT).show()
+                val clipData = result.data?.clipData
+                val uriList = mutableListOf<Uri>()
+
+                if (clipData != null) {
+                    for (i in 0 until clipData.itemCount) {
+                        val uri = clipData.getItemAt(i).uri
+                        uriList.add(uri)
+                    }
+                } else {
+                    result.data?.data?.let { uriList.add(it) } // Single file selected
+                }
+
+                if (uriList.isNotEmpty()) {
+                    lifecycleScope.launch {
+                        FileManager(this@AudioGalleryActivity, this@AudioGalleryActivity).processMultipleFiles(uriList, fileType,this@AudioGalleryActivity )
+                    }
+                } else {
+                    Toast.makeText(this, "No files selected", Toast.LENGTH_SHORT).show()
+                }
+            }
+        }
+    }
+    override fun onFilesProcessedSuccessfully(copiedFiles: List<File>) {
+        Toast.makeText(this@AudioGalleryActivity, "${copiedFiles.size} Audios hidden successfully", Toast.LENGTH_SHORT).show()
         loadFiles()
-                        } else {
-                            Toast.makeText(this, "Failed to hide file", Toast.LENGTH_SHORT).show()
-                        }
-                    } catch (e: Exception) {
-                        Toast.makeText(this, "Error: ${e.message}", Toast.LENGTH_SHORT).show()
-                    }
-                } else {
-                    Toast.makeText(this, "No audio selected", Toast.LENGTH_SHORT).show()
-                }
-            }
     }
+
+    override fun onFileProcessFailed() {
+        Toast.makeText(this@AudioGalleryActivity, "Failed to hide Audios", Toast.LENGTH_SHORT).show()
     }
 
     private fun setupFabButton() {
@@ -46,6 +60,7 @@ class AudioGalleryActivity : BaseGalleryActivity() {
             val intent = Intent(Intent.ACTION_OPEN_DOCUMENT).apply {
                 type = "audio/*"
                 addCategory(Intent.CATEGORY_OPENABLE)
+                putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true)
                 addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
                 addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
                 addFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION)
@@ -57,4 +72,6 @@ class AudioGalleryActivity : BaseGalleryActivity() {
     override fun openPreview() {
         // Implement audio preview
     }
+
+
 }

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

@@ -22,21 +22,33 @@ abstract class BaseGalleryActivity : AppCompatActivity() {
     protected lateinit var binding: ActivityGalleryBinding
     protected lateinit var fileManager: FileManager
     protected lateinit var adapter: FileAdapter
+    protected lateinit var files: List<File>
 
     private lateinit var intentSenderLauncher: ActivityResultLauncher<IntentSenderRequest>
+    private val storagePermissionLauncher = registerForActivityResult(
+        ActivityResultContracts.RequestMultiplePermissions()
+    ) { permissions ->
+        val granted = permissions.values.all { it }
+        if (granted || Build.VERSION.SDK_INT >= Build.VERSION_CODES.R && Environment.isExternalStorageManager()) {
+            loadFiles()
+        } else {
+            // Handle permission denial case
+            showPermissionDeniedDialog()
+        }
+    }
 
     abstract val fileType: FileManager.FileType
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setupIntentSenderLauncher()
-        checkPermissions()
         binding = ActivityGalleryBinding.inflate(layoutInflater)
         setContentView(binding.root)
 
         fileManager = FileManager(this, this)
+
         setupRecyclerView()
-        loadFiles()
+        checkPermissionsAndLoadFiles()
     }
 
     private fun setupIntentSenderLauncher() {
@@ -51,52 +63,55 @@ abstract class BaseGalleryActivity : AppCompatActivity() {
 
     private fun setupRecyclerView() {
         binding.recyclerView.layoutManager = GridLayoutManager(this, 3)
-        adapter = FileAdapter(
-            fileType,
-            this, this
-        )
+        adapter = FileAdapter(fileType, this, this)
         binding.recyclerView.adapter = adapter
     }
 
-    protected fun loadFiles() {
-        val files = fileManager.getFilesInHiddenDir(fileType)
-        adapter.submitList(files)
-        adapter.notifyDataSetChanged()
-    }
-
-    abstract fun openPreview()
-
-    private fun checkPermissions() {
+    private fun checkPermissionsAndLoadFiles() {
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
             if (!Environment.isExternalStorageManager()) {
                 val intent = Intent(Settings.ACTION_MANAGE_APP_ALL_FILES_ACCESS_PERMISSION)
-                intent.addCategory("android.intent.category.DEFAULT")
-                intent.data = Uri.parse("package:${applicationContext.packageName}")
+                    .addCategory("android.intent.category.DEFAULT")
+                    .setData(Uri.parse("package:${applicationContext.packageName}"))
                 startActivityForResult(intent, 2296)
+            } else {
+                loadFiles()
             }
         } else {
-            if (checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED ||
-                checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
-                requestPermissions(
-                    arrayOf(
+            val permissions = arrayOf(
                 Manifest.permission.READ_EXTERNAL_STORAGE,
                 Manifest.permission.WRITE_EXTERNAL_STORAGE
-                    ),
-                    1001
             )
-            }
-        }
-    }
-
-    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
-        super.onActivityResult(requestCode, resultCode, data)
-        if (requestCode == 2296) {
-            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
-                if (Environment.isExternalStorageManager()) {
-                    // Permission granted
+            if (permissions.any { checkSelfPermission(it) != PackageManager.PERMISSION_GRANTED }) {
+                storagePermissionLauncher.launch(permissions)
+            } else {
                 loadFiles()
             }
         }
     }
+
+    protected open fun loadFiles() {
+        files = fileManager.getFilesInHiddenDir(fileType)
+        adapter.submitList(files)
+    }
+
+    override fun onResume() {
+        super.onResume()
+        loadFiles()
+    }
+
+    abstract fun openPreview()
+
+    private fun showPermissionDeniedDialog() {
+        // Show a dialog or a message informing the user about the importance of permissions
+    }
+
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+        super.onActivityResult(requestCode, resultCode, data)
+        if (requestCode == 2296 && Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+            if (Environment.isExternalStorageManager()) {
+                loadFiles()
+            }
+        }
     }
 }

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

@@ -6,39 +6,56 @@ import android.os.Bundle
 import android.widget.Toast
 import androidx.activity.result.ActivityResultLauncher
 import androidx.activity.result.contract.ActivityResultContracts
+import androidx.lifecycle.lifecycleScope
+import devs.org.calculator.activities.AudioGalleryActivity
 import devs.org.calculator.utils.FileManager
+import devs.org.calculator.utils.FileProcessCallback
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import java.io.File
 
-class DocumentsActivity : BaseGalleryActivity() {
+class DocumentsActivity : BaseGalleryActivity(), FileProcessCallback {
     override val fileType = FileManager.FileType.DOCUMENT
-    private lateinit var pickDocumentLauncher: ActivityResultLauncher<Intent>
+    private lateinit var pickLauncher: ActivityResultLauncher<Intent>
     private var selectedUri: Uri? = null
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setupFabButton()
 
-        pickDocumentLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
+        pickLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
             if (result.resultCode == RESULT_OK) {
-                val uri = result.data?.data
-                if (uri != null) {
-                    selectedUri = uri
-                    try {
-                        val file = fileManager.copyFileToHiddenDir(selectedUri!!, fileType)
-                        if (file != null && file.exists()) {
-                            Toast.makeText(this, "File hidden successfully", Toast.LENGTH_SHORT).show()
+                val clipData = result.data?.clipData
+                val uriList = mutableListOf<Uri>()
+
+                if (clipData != null) {
+                    for (i in 0 until clipData.itemCount) {
+                        val uri = clipData.getItemAt(i).uri
+                        uriList.add(uri)
+                    }
+                } else {
+                    result.data?.data?.let { uriList.add(it) } // Single file selected
+                }
+
+                if (uriList.isNotEmpty()) {
+                    lifecycleScope.launch {
+                        FileManager(this@DocumentsActivity, this@DocumentsActivity).processMultipleFiles(uriList, fileType,this@DocumentsActivity )
+                    }
+                } else {
+                    Toast.makeText(this, "No files selected", Toast.LENGTH_SHORT).show()
+                }
+            }
+        }
+    }
+
+    override fun onFilesProcessedSuccessfully(copiedFiles: List<File>) {
+        Toast.makeText(this@DocumentsActivity, "${copiedFiles.size} Documents hidden successfully", Toast.LENGTH_SHORT).show()
         loadFiles()
-                        } else {
-                            Toast.makeText(this, "Failed to hide file", Toast.LENGTH_SHORT).show()
-                        }
-                    } catch (e: Exception) {
-                        Toast.makeText(this, "Error: ${e.message}", Toast.LENGTH_SHORT).show()
-                    }
-                } else {
-                    Toast.makeText(this, "No document selected", Toast.LENGTH_SHORT).show()
-                }
-            }
     }
+
+    override fun onFileProcessFailed() {
+        Toast.makeText(this@DocumentsActivity, "Failed to hide Documents", Toast.LENGTH_SHORT).show()
     }
 
     private fun setupFabButton() {
@@ -46,11 +63,12 @@ class DocumentsActivity : BaseGalleryActivity() {
             val intent = Intent(Intent.ACTION_OPEN_DOCUMENT).apply {
                 type = "*/*"
                 addCategory(Intent.CATEGORY_OPENABLE)
+                putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true)
                 addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
                 addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
                 addFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION)
             }
-            pickDocumentLauncher.launch(intent)
+            pickLauncher.launch(intent)
         }
     }
 

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

@@ -1,28 +1,33 @@
 package devs.org.calculator.activities
 
-import android.app.RecoverableSecurityException
 import android.content.Intent
+import android.content.pm.PackageManager
 import android.net.Uri
 import android.os.Build
 import android.os.Bundle
 import android.os.Environment
-import android.provider.MediaStore
 import android.provider.Settings
 import android.widget.Toast
 import androidx.activity.result.ActivityResultLauncher
 import androidx.activity.result.IntentSenderRequest
 import androidx.activity.result.contract.ActivityResultContracts
-import androidx.documentfile.provider.DocumentFile
+import androidx.core.app.ActivityCompat
+import androidx.core.content.ContextCompat
+import androidx.lifecycle.lifecycleScope
 import devs.org.calculator.utils.FileManager
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import java.io.File
+import android.Manifest
+import devs.org.calculator.activities.AudioGalleryActivity
+import devs.org.calculator.utils.FileProcessCallback
 
-class ImageGalleryActivity : BaseGalleryActivity() {
+class ImageGalleryActivity : BaseGalleryActivity(), FileProcessCallback  {
     override val fileType = FileManager.FileType.IMAGE
+    private val STORAGE_PERMISSION_CODE = 100
 
     private lateinit var intentSenderLauncher: ActivityResultLauncher<IntentSenderRequest>
-    private var selectedImageUri: Uri? = null
     private lateinit var pickImageLauncher: ActivityResultLauncher<Intent>
 
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -32,36 +37,48 @@ class ImageGalleryActivity : BaseGalleryActivity() {
 
         intentSenderLauncher = registerForActivityResult(ActivityResultContracts.StartIntentSenderForResult()){
             if (it.resultCode == RESULT_OK){
-                Toast.makeText(this, "Photo Deleted Successfully", Toast.LENGTH_SHORT).show()
+//                Toast.makeText(this, "Photo Deleted Successfully", Toast.LENGTH_SHORT).show()
             }else{
-                Toast.makeText(this, "Failed to delete photo", Toast.LENGTH_SHORT).show()
+                Toast.makeText(this, "Failed to hide/unhide photo", Toast.LENGTH_SHORT).show()
             }
         }
 
         pickImageLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
             if (result.resultCode == RESULT_OK) {
-                val uri = result.data?.data
-                if (uri != null) {
-                    selectedImageUri = uri
-                    try {
-                        val file = fileManager.copyFileToHiddenDir(selectedImageUri!!, fileType)
-                        if (file != null && file.exists()) {
-                            Toast.makeText(this, "File hidden successfully", Toast.LENGTH_SHORT).show()
-                            loadFiles()
-                        } else {
-                            Toast.makeText(this, "Failed to hide file", Toast.LENGTH_SHORT).show()
-                        }
-                    } catch (e: Exception) {
-                        Toast.makeText(this, "Error: ${e.message}", Toast.LENGTH_SHORT).show()
+                val clipData = result.data?.clipData
+                val uriList = mutableListOf<Uri>()
+
+                if (clipData != null) {
+                    for (i in 0 until clipData.itemCount) {
+                        val uri = clipData.getItemAt(i).uri
+                        uriList.add(uri)
                     }
                 } else {
-                    Toast.makeText(this, "No image selected", Toast.LENGTH_SHORT).show()
+                    result.data?.data?.let { uriList.add(it) } // Single file selected
+                }
+
+                if (uriList.isNotEmpty()) {
+                    lifecycleScope.launch {
+                        FileManager(this@ImageGalleryActivity, this@ImageGalleryActivity)
+                            .processMultipleFiles(uriList, fileType,this@ImageGalleryActivity )
+                    }
+                } else {
+                    Toast.makeText(this, "No files selected", Toast.LENGTH_SHORT).show()
                 }
             }
         }
         askPermissiom()
     }
 
+    override fun onFilesProcessedSuccessfully(copiedFiles: List<File>) {
+        Toast.makeText(this@ImageGalleryActivity, "${copiedFiles.size} Images hidden successfully", Toast.LENGTH_SHORT).show()
+        loadFiles()
+    }
+
+    override fun onFileProcessFailed() {
+        Toast.makeText(this@ImageGalleryActivity, "Failed to hide images", Toast.LENGTH_SHORT).show()
+    }
+
     private fun setupIntentSenderLauncher() {
         intentSenderLauncher = registerForActivityResult(
             ActivityResultContracts.StartIntentSenderForResult()
@@ -80,7 +97,45 @@ class ImageGalleryActivity : BaseGalleryActivity() {
             }
         }
         else {
-            Toast.makeText(this, "Android Version Lower", Toast.LENGTH_SHORT).show()
+            checkAndRequestStoragePermission()
+        }
+    }
+
+    private fun checkAndRequestStoragePermission() {
+        if (ContextCompat.checkSelfPermission(
+                this,
+                Manifest.permission.READ_EXTERNAL_STORAGE
+            ) != PackageManager.PERMISSION_GRANTED ||
+            ContextCompat.checkSelfPermission(
+                this,
+                Manifest.permission.WRITE_EXTERNAL_STORAGE
+            ) != PackageManager.PERMISSION_GRANTED
+        ) {
+            ActivityCompat.requestPermissions(
+                this,
+                arrayOf(
+                    Manifest.permission.READ_EXTERNAL_STORAGE,
+                    Manifest.permission.WRITE_EXTERNAL_STORAGE
+                ),
+                STORAGE_PERMISSION_CODE
+            )
+        } else {
+            //storage permission granted
+        }
+    }
+
+    override fun onRequestPermissionsResult(
+        requestCode: Int,
+        permissions: Array<out String>,
+        grantResults: IntArray
+    ) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
+        if (requestCode == STORAGE_PERMISSION_CODE) {
+            if (grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
+                Toast.makeText(this, "Storage permissions granted", Toast.LENGTH_SHORT).show()
+            } else {
+                Toast.makeText(this, "Storage permissions denied", Toast.LENGTH_SHORT).show()
+            }
         }
     }
 
@@ -89,6 +144,7 @@ class ImageGalleryActivity : BaseGalleryActivity() {
             val intent = Intent(Intent.ACTION_OPEN_DOCUMENT).apply {
                 type = "image/*"
                 addCategory(Intent.CATEGORY_OPENABLE)
+                putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true)
                 addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
                 addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
                 addFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION)

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

@@ -57,6 +57,7 @@ class MainActivity : AppCompatActivity() {
         binding.btnDot.setOnClickListener { addDecimal() }
         binding.btnEquals.setOnClickListener { calculateResult() }
         binding.btnPercent.setOnClickListener { calculatePercentage() }
+        binding.cut.setOnClickListener { cutNumbers() }
     }
 
     private fun launchBaseDirectoryPicker() {
@@ -162,11 +163,23 @@ class MainActivity : AppCompatActivity() {
             hasDecimal = currentExpression.contains(".")
             updateDisplay()
         } catch (e: Exception) {
-            binding.display.text = "Error"
+            binding.display.text = "Invalid Value"
         }
     }
 
     private fun updateDisplay() {
         binding.display.text = currentExpression
     }
+    private fun cutNumbers() {
+        if (currentExpression.isNotEmpty()){
+            if (currentExpression.length == 1){
+                currentExpression = currentExpression.substring(0, currentExpression.length - 1)
+                currentExpression = "0"
+            }else currentExpression = currentExpression.substring(0, currentExpression.length - 1)
+        }else currentExpression = "0"
+        updateDisplay()
+
+    }
 }
+
+

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

@@ -1,14 +1,15 @@
 package devs.org.calculator.activities
 
-
 import android.net.Uri
 import android.os.Bundle
 import androidx.appcompat.app.AppCompatActivity
+import androidx.lifecycle.lifecycleScope
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import devs.org.calculator.adapters.ImagePreviewAdapter
 import devs.org.calculator.databinding.ActivityPreviewBinding
 import devs.org.calculator.utils.DialogUtil
 import devs.org.calculator.utils.FileManager
+import kotlinx.coroutines.launch
 import java.io.File
 
 class PreviewActivity : AppCompatActivity() {
@@ -29,70 +30,102 @@ class PreviewActivity : AppCompatActivity() {
         fileManager = FileManager(this, this)
 
         currentPosition = intent.getIntExtra("position", 0)
-
-
         type = intent.getStringExtra("type").toString()
 
-        clickListeners()
-
-        when(type){
-            "IMAGE" ->{
-                filetype = FileManager.FileType.IMAGE
-                binding.title.text = "Preview Images"
-            }
-
-            "VIDEO" ->{
-                filetype = FileManager.FileType.VIDEO
-                binding.title.text = "Preview Videos"
-            }
-
-            "AUDIO" ->{
-                filetype = FileManager.FileType.AUDIO
-                binding.title.text = "Preview Audios"
-            }
-
-            else -> {
-                filetype = FileManager.FileType.DOCUMENT
-                binding.title.text = "Preview Docomnts"
-            }
-        }
+        setupFileType()
         files = fileManager.getFilesInHiddenDir(filetype)
 
         setupImagePreview()
+        clickListeners()
     }
 
-    private fun clickListeners() {
-        binding.delete.setOnClickListener{
-            var fileUri = FileManager.FileManager().getContentUri(this, files[binding.viewPager.currentItem])
-            if (fileUri != null) {
-                DialogUtil(this, this).showMaterialDialog(
-                    "Delete File",
-                    "Are you sure you want to delete this file ?",
-                    "Delete",
-                    "Cancel",
-                    fileUri!!
-                )
+    private fun setupFileType() {
+        when (type) {
+            "IMAGE" -> {
+                filetype = FileManager.FileType.IMAGE
+                binding.title.text = "Preview Images"
             }
+            "VIDEO" -> {
+                filetype = FileManager.FileType.VIDEO
+                binding.title.text = "Preview Videos"
+            }
+            "AUDIO" -> {
+                filetype = FileManager.FileType.AUDIO
+                binding.title.text = "Preview Audios"
+            }
+            else -> {
+                filetype = FileManager.FileType.DOCUMENT
+                binding.title.text = "Preview Documents"
             }
-        binding.unHide.setOnClickListener{
-            DialogUtil(this, this).showMaterialDialog("Unhide File","Are you sure you want to unhide this file ?", "Unhide", "Cancel")
-
         }
     }
 
     private fun setupImagePreview() {
-        adapter = ImagePreviewAdapter(this, files,filetype)
+        adapter = ImagePreviewAdapter(this, filetype)
+        adapter.images = files // Set initial data
         binding.viewPager.adapter = adapter
 
-        val fileUri = Uri.fromFile(files[currentPosition])
-        val filesName = FileManager.FileName(this).getFileNameFromUri(fileUri!!).toString()
         binding.viewPager.setCurrentItem(currentPosition, false)
+
+        val fileUri = Uri.fromFile(files[currentPosition])
+        val fileName = FileManager.FileName(this).getFileNameFromUri(fileUri).toString()
+        binding.title.text = fileName
+    }
+
+    private fun clickListeners() {
+        binding.delete.setOnClickListener {
+            val fileUri = FileManager.FileManager().getContentUri(this, files[binding.viewPager.currentItem])
+            if (fileUri != null) {
+                MaterialAlertDialogBuilder(this)
+                    .setTitle("Delete File")
+                    .setMessage("Are you sure you want to Delete this file?")
+                    .setPositiveButton("Delete") { dialog, _ ->
+                        lifecycleScope.launch {
+                            FileManager(this@PreviewActivity, this@PreviewActivity).deletePhotoFromExternalStorage(fileUri)
+                            removeFileFromList(binding.viewPager.currentItem)
+                        }
+                        dialog.dismiss()
+                    }
+                    .setNegativeButton("Cancel") { dialog, _ ->
+                        dialog.dismiss()
+                    }
+                    .show()
+            }
+        }
+
+        binding.unHide.setOnClickListener {
+            val fileUri = FileManager.FileManager().getContentUri(this, files[binding.viewPager.currentItem])
+            if (fileUri != null) {
+                MaterialAlertDialogBuilder(this)
+                    .setTitle("Unhide File")
+                    .setMessage("Are you sure you want to Unhide this file?")
+                    .setPositiveButton("Unhide") { dialog, _ ->
+                        lifecycleScope.launch {
+                            FileManager(this@PreviewActivity, this@PreviewActivity).copyFileToNormalDir(fileUri)
+                            removeFileFromList(binding.viewPager.currentItem)
+                        }
+                        dialog.dismiss()
+                    }
+                    .setNegativeButton("Cancel") { dialog, _ ->
+                        dialog.dismiss()
+                    }
+                    .show()
+            }
+        }
+    }
+
+    private fun removeFileFromList(position: Int) {
+        val updatedFiles = files.toMutableList().apply { removeAt(position) }
+        files = updatedFiles
+        adapter.images = updatedFiles // Update adapter with the new list
+
+        // Update the ViewPager's position
+        if (!updatedFiles.isNotEmpty()) finish()
+
     }
 
     override fun onSupportNavigateUp(): Boolean {
         onBackPressed()
         return true
     }
-
-
 }

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

@@ -6,12 +6,18 @@ import android.os.Bundle
 import android.widget.Toast
 import androidx.activity.result.ActivityResultLauncher
 import androidx.activity.result.contract.ActivityResultContracts
+import androidx.lifecycle.lifecycleScope
+import devs.org.calculator.activities.ImageGalleryActivity
 import devs.org.calculator.utils.FileManager
+import devs.org.calculator.utils.FileProcessCallback
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import java.io.File
 
-class VideoGalleryActivity : BaseGalleryActivity() {
+class VideoGalleryActivity : BaseGalleryActivity(), FileProcessCallback {
     override val fileType = FileManager.FileType.VIDEO
-    private lateinit var pickVideoLauncher: ActivityResultLauncher<Intent>
+    private lateinit var pickLauncher: ActivityResultLauncher<Intent>
     private var selectedUri: Uri? = null
 
 
@@ -19,27 +25,39 @@ class VideoGalleryActivity : BaseGalleryActivity() {
         super.onCreate(savedInstanceState)
         setupFabButton()
 
-        pickVideoLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
+        pickLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
             if (result.resultCode == RESULT_OK) {
-                val uri = result.data?.data
-                if (uri != null) {
-                    selectedUri = uri
-                    try {
-                        val file = fileManager.copyFileToHiddenDir(selectedUri!!, fileType)
-                        if (file != null && file.exists()) {
-                            Toast.makeText(this, "File hidden successfully", Toast.LENGTH_SHORT).show()
+                val clipData = result.data?.clipData
+                val uriList = mutableListOf<Uri>()
+
+                if (clipData != null) {
+                    for (i in 0 until clipData.itemCount) {
+                        val uri = clipData.getItemAt(i).uri
+                        uriList.add(uri)
+                    }
+                } else {
+                    result.data?.data?.let { uriList.add(it) } // Single file selected
+                }
+
+                if (uriList.isNotEmpty()) {
+                    lifecycleScope.launch {
+                        FileManager(this@VideoGalleryActivity, this@VideoGalleryActivity)
+                            .processMultipleFiles(uriList, fileType,this@VideoGalleryActivity )
+                    }
+                } else {
+                    Toast.makeText(this, "No files selected", Toast.LENGTH_SHORT).show()
+                }
+            }
+        }
+    }
+
+    override fun onFilesProcessedSuccessfully(copiedFiles: List<File>) {
+        Toast.makeText(this@VideoGalleryActivity, "${copiedFiles.size} Videos hidden successfully", Toast.LENGTH_SHORT).show()
         loadFiles()
-                        } else {
-                            Toast.makeText(this, "Failed to hide file", Toast.LENGTH_SHORT).show()
-                        }
-                    } catch (e: Exception) {
-                        Toast.makeText(this, "Error: ${e.message}", Toast.LENGTH_SHORT).show()
-                    }
-                } else {
-                    Toast.makeText(this, "No video selected", Toast.LENGTH_SHORT).show()
-                }
-            }
     }
+
+    override fun onFileProcessFailed() {
+        Toast.makeText(this@VideoGalleryActivity, "Failed to hide videos", Toast.LENGTH_SHORT).show()
     }
 
     private fun setupFabButton() {
@@ -47,11 +65,12 @@ class VideoGalleryActivity : BaseGalleryActivity() {
             val intent = Intent(Intent.ACTION_OPEN_DOCUMENT).apply {
                 type = "video/*"
                 addCategory(Intent.CATEGORY_OPENABLE)
+                putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true)
                 addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
                 addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
                 addFlags(Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION)
             }
-            pickVideoLauncher.launch(intent)
+            pickLauncher.launch(intent)
         }
     }
 

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

@@ -86,7 +86,7 @@ class FileAdapter(private val fileType: FileManager.FileType, var context: Conte
 
                 MaterialAlertDialogBuilder(context)
                     .setTitle("Details")
-                    .setMessage("File Name: $filesName\\n\\nYou can delete or unghide this file\", \"Delete")
+                    .setMessage("File Name: $filesName\n\nYou can delete or Unhide this file.")
                     .setPositiveButton("Delete") { dialog, _ ->
                         // Handle positive button click
                         lifecycleOwner.lifecycleScope.launch{
@@ -100,7 +100,11 @@ class FileAdapter(private val fileType: FileManager.FileType, var context: Conte
                     }
                     .setNegativeButton("Unhide") { dialog, _ ->
                         // Handle negative button click
-
+                        FileManager(context, context as LifecycleOwner).copyFileToNormalDir(fileUri)
+                        val currentList = currentList.toMutableList()
+                        currentList.remove(file)
+                        submitList(currentList)
+                        dialog.dismiss()
                         dialog.dismiss()
                     }
                     .show()
@@ -110,11 +114,6 @@ class FileAdapter(private val fileType: FileManager.FileType, var context: Conte
 
         }
     }
-    fun reloadList(file: File){
-        val currentList = currentList.toMutableList()
-        currentList.remove(file)
-        submitList(currentList)
-    }
 
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): FileViewHolder {

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

@@ -6,28 +6,35 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.MediaController
+import androidx.recyclerview.widget.AsyncListDiffer
 import androidx.recyclerview.widget.RecyclerView
 import com.bumptech.glide.Glide
+import devs.org.calculator.adapters.FileAdapter.FileDiffCallback
 import devs.org.calculator.databinding.ViewpagerItemsBinding
 import devs.org.calculator.utils.FileManager
 import java.io.File
 
 class ImagePreviewAdapter(
     private val context: Context,
-    private val images: List<File>,
     private var fileType: FileManager.FileType
 ) : RecyclerView.Adapter<ImagePreviewAdapter.ImageViewHolder>() {
 
+    // Use AsyncListDiffer for managing the list
+    private val differ = AsyncListDiffer(this, FileDiffCallback())
+
+    // Expose data management through differ
+    var images: List<File>
+        get() = differ.currentList
+        set(value) = differ.submitList(value)
+
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ImageViewHolder {
-        val binding = ViewpagerItemsBinding.inflate(LayoutInflater.from(context), parent, false
-        )
+        val binding = ViewpagerItemsBinding.inflate(LayoutInflater.from(context), parent, false)
         return ImageViewHolder(binding)
     }
 
     override fun onBindViewHolder(holder: ImageViewHolder, position: Int) {
         val imageUrl = images[position]
         holder.bind(imageUrl)
-
     }
 
     override fun getItemCount(): Int = images.size
@@ -39,31 +46,27 @@ class ImagePreviewAdapter(
                     binding.imageView.visibility = View.GONE
                     binding.videoView.visibility = View.VISIBLE
 
-                    // Set up the VideoView with the current video file
                     val videoUri = Uri.fromFile(file)
                     binding.videoView.setVideoURI(videoUri)
                     binding.videoView.start()
 
-                    // Create and attach MediaController
                     val mediaController = MediaController(context)
                     mediaController.setAnchorView(binding.videoView)
                     binding.videoView.setMediaController(mediaController)
 
-                    // Handle the "Next" button logic
                     mediaController.setPrevNextListeners(
-                        { // Next button clicked
-                            val nextPosition = (adapterPosition + 1) % images.size // Loop to start if last
+                        {
+                            val nextPosition = (adapterPosition + 1) % images.size
                             playVideoAtPosition(nextPosition)
                         },
-                        { // Previous button clicked
+                        {
                             val prevPosition = if (adapterPosition - 1 < 0) images.size - 1 else adapterPosition - 1
                             playVideoAtPosition(prevPosition)
                         }
                     )
 
-                    // Play next video automatically when the current one finishes
                     binding.videoView.setOnCompletionListener {
-                        val nextPosition = (adapterPosition + 1) % images.size // Loop to start if last
+                        val nextPosition = (adapterPosition + 1) % images.size
                         playVideoAtPosition(nextPosition)
                     }
                 }
@@ -92,7 +95,5 @@ class ImagePreviewAdapter(
             }
         }
     }
-
-
-
 }
+

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

@@ -74,7 +74,7 @@ class DialogUtil(private val context: Context, private var lifecycleOwner: Lifec
                     val deleted = documentFile.delete()
                     withContext(Dispatchers.Main) {
                         if (deleted) {
-                            Toast.makeText(context, "File deleted successfully", Toast.LENGTH_SHORT).show()
+//                            Toast.makeText(context, "File deleted successfully", Toast.LENGTH_SHORT).show()
                         } else {
                             Toast.makeText(context, "Failed to delete file", Toast.LENGTH_SHORT).show()
                         }

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

@@ -6,6 +6,8 @@ import android.content.Intent
 import android.net.Uri
 import android.os.Build
 import android.os.Environment
+import android.provider.ContactsContract
+import android.provider.ContactsContract.Directory
 import android.provider.DocumentsContract
 import android.provider.MediaStore
 import android.webkit.MimeTypeMap
@@ -15,6 +17,7 @@ import androidx.activity.result.IntentSenderRequest
 import androidx.documentfile.provider.DocumentFile
 import androidx.lifecycle.LifecycleOwner
 import androidx.lifecycle.lifecycleScope
+import devs.org.calculator.activities.VideoGalleryActivity
 import devs.org.calculator.adapters.FileAdapter
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
@@ -95,6 +98,46 @@ class FileManager(private val context: Context, private val lifecycleOwner: Life
             null
         }
     }
+    fun copyFileToNormalDir(uri: Uri): File? {
+        return try {
+            val contentResolver = context.contentResolver
+
+            // Get the target directory
+            val targetDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
+            targetDir.mkdirs()
+
+            // Create target file
+            val mimeType = contentResolver.getType(uri)
+            val extension = MimeTypeMap.getSingleton()
+                .getExtensionFromMimeType(mimeType) ?: ""
+            val fileName = "${System.currentTimeMillis()}.${extension}"
+            val targetFile = File(targetDir, fileName)
+
+            // Copy file using DocumentFile
+            contentResolver.openInputStream(uri)?.use { input ->
+                targetFile.outputStream().use { output ->
+                    input.copyTo(output)
+                }
+            }
+
+            // Verify copy success
+            if (!targetFile.exists() || targetFile.length() == 0L) {
+                throw Exception("File copy failed")
+            }
+
+            // Media scan the new file to hide it
+            val mediaScanIntent = Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE)
+            mediaScanIntent.data = Uri.fromFile(targetDir)
+            context.sendBroadcast(mediaScanIntent)
+            lifecycleOwner.lifecycleScope.launch {
+                deletePhotoFromExternalStorage(uri)
+            }
+            targetFile
+        } catch (e: Exception) {
+            e.printStackTrace()
+            null
+        }
+    }
 
 
 
@@ -108,9 +151,9 @@ class FileManager(private val context: Context, private val lifecycleOwner: Life
                     val deleted = documentFile.delete()
                     withContext(Dispatchers.Main) {
                         if (deleted) {
-                            Toast.makeText(context, "File deleted successfully", Toast.LENGTH_SHORT).show()
+//                            Toast.makeText(context, "File deleted successfully", Toast.LENGTH_SHORT).show()
                         } else {
-                            Toast.makeText(context, "Failed to delete file", Toast.LENGTH_SHORT).show()
+                            Toast.makeText(context, "Failed to hide/unhide file", Toast.LENGTH_SHORT).show()
                         }
                     }
                     return@withContext
@@ -120,7 +163,7 @@ class FileManager(private val context: Context, private val lifecycleOwner: Life
                 try {
                     context.contentResolver.delete(photoUri, null, null)
                     withContext(Dispatchers.Main) {
-                        Toast.makeText(context, "File deleted successfully", Toast.LENGTH_SHORT).show()
+//                        Toast.makeText(context, "File deleted successfully", Toast.LENGTH_SHORT).show()
                     }
                 } catch (e: SecurityException) {
                     // Handle security exception for Android 10 and above
@@ -145,7 +188,7 @@ class FileManager(private val context: Context, private val lifecycleOwner: Life
                 withContext(Dispatchers.Main) {
                     Toast.makeText(
                         context,
-                        "Error deleting file: ${e.message}",
+                        "Error hiding/unhiding file: ${e.message}",
                         Toast.LENGTH_LONG
                     ).show()
                 }
@@ -196,6 +239,31 @@ class FileManager(private val context: Context, private val lifecycleOwner: Life
     }
 
 
+    suspend fun processMultipleFiles(
+        uriList: List<Uri>,
+        fileType: FileType,
+        callback: FileProcessCallback
+    ) {
+        withContext(Dispatchers.IO) {
+            val copiedFiles = mutableListOf<File>()
+            for (uri in uriList) {
+                try {
+                    val file = copyFileToHiddenDir(uri, fileType)
+                    file?.let { copiedFiles.add(it) }
+                } catch (e: Exception) {
+                    e.printStackTrace()
+                }
+            }
+            withContext(Dispatchers.Main) {
+                if (copiedFiles.isNotEmpty()) {
+                    callback.onFilesProcessedSuccessfully(copiedFiles)
+                } else {
+                    callback.onFileProcessFailed()
+                }
+            }
+        }
+    }
+
 
 
     enum class FileType(val dirName: String) {

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

@@ -0,0 +1,8 @@
+package devs.org.calculator.utils
+
+import java.io.File
+
+interface FileProcessCallback {
+    fun onFilesProcessedSuccessfully(copiedFiles: List<File>)
+    fun onFileProcessFailed()
+}

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

@@ -0,0 +1,15 @@
+<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="#00000000"
+        android:pathData="M7.7,6.36L3.533,11.36C3.224,11.731 3.224,12.269 3.533,12.64L7.7,17.64C7.89,17.868 8.172,18 8.468,18H18C19.657,18 21,16.657 21,15V9C21,7.343 19.657,6 18,6H8.468C8.172,6 7.89,6.132 7.7,6.36Z"
+        android:strokeColor="@color/textColor" android:strokeLineCap="round"
+        android:strokeLineJoin="round" android:strokeWidth="2"/>
+      
+    <path android:fillColor="#00000000"
+        android:pathData="M15,10L13,12M13,12L11,14M13,12L11,10M13,12L15,14"
+        android:strokeColor="@color/textColor"
+        android:strokeLineCap="round"
+        android:strokeLineJoin="round"
+        android:strokeWidth="2"/>
+    
+</vector>

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

@@ -47,18 +47,6 @@
             app:cornerRadius="15dp"
             style="@style/Widget.MaterialComponents.Button.OutlinedButton"/>
 
-        <com.google.android.material.button.MaterialButton
-            android:id="@+id/btnParentheses"
-            android:layout_width="0dp"
-            android:layout_height="0dp"
-            android:layout_rowWeight="1"
-            android:layout_columnWeight="1"
-            android:textSize="30sp"
-            android:layout_margin="4dp"
-            android:text="( )"
-            app:cornerRadius="15dp"
-            style="@style/Widget.MaterialComponents.Button.OutlinedButton"/>
-
         <com.google.android.material.button.MaterialButton
             android:id="@+id/btnPercent"
             android:layout_width="0dp"
@@ -81,8 +69,20 @@
             android:layout_margin="4dp"
             android:text="÷"
             app:cornerRadius="15dp"
-            style="@style/Widget.MaterialComponents.Button"/>
+            style="@style/Widget.MaterialComponents.Button.OutlinedButton"/>
 
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/cut"
+            android:layout_height="0dp"
+            android:layout_width="0dp"
+            android:layout_rowWeight="1"
+            android:layout_columnWeight="1"
+            android:textSize="30sp"
+            android:layout_margin="4dp"
+            app:icon="@drawable/backspace"
+
+            app:iconSize="30dp"
+            app:cornerRadius="15dp"/>
         <!-- Row 2 -->
         <com.google.android.material.button.MaterialButton
             android:id="@+id/btn7"

app/src/main/res/values-night/colors.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+
+    <!-- Material You dynamic colors -->
+    <color name="primary">@android:color/system_accent1_600</color>
+    <color name="on_primary">@android:color/system_accent1_0</color>
+    <color name="primary_container">@android:color/system_accent1_100</color>
+    <color name="on_primary_container">@android:color/system_accent1_900</color>
+
+    <color name="secondary">@android:color/system_accent2_600</color>
+    <color name="on_secondary">@android:color/system_accent2_0</color>
+    <color name="secondary_container">@android:color/system_accent2_100</color>
+    <color name="on_secondary_container">@android:color/system_accent2_900</color>
+
+    <color name="surface">@android:color/system_neutral1_50</color>
+    <color name="on_surface">@android:color/system_neutral1_900</color>
+    <color name="textColor">#ffffff</color>
+</resources>

app/src/main/res/values-v27/themes.xml

@@ -1,24 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-
-    <style name="Base.Theme.Calculator" parent="Theme.Material3.DayNight.NoActionBar">
-        <!-- Primary brand color -->
-        <item name="colorPrimary">@android:color/system_accent1_600</item>
-        <item name="colorPrimaryVariant">@android:color/system_accent1_700</item>
-        <item name="colorOnPrimary">@color/white</item>
-        <item name="fontFamily">@font/ubuntu_regular</item>
-
-        <!-- Secondary brand color -->
-        <item name="colorSecondary">@android:color/system_accent2_600</item>
-        <item name="colorSecondaryVariant">@android:color/system_accent2_700</item>
-        <item name="colorOnSecondary">@color/black</item>
-
-        <!-- Status bar color -->
-        <item name="android:statusBarColor">@android:color/transparent</item>
-        <item name="android:navigationBarColor">@android:color/transparent</item>
-
-        <!-- Enable window decor fitting -->
-        <item name="android:windowLightStatusBar">true</item>
-        <item name="android:windowLightNavigationBar">true</item>
-    </style>
-</resources>

app/src/main/res/values-v31/themes.xml

@@ -1,24 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-
-    <style name="Base.Theme.Calculator" parent="Theme.Material3.DayNight.NoActionBar">
-        <!-- Primary brand color -->
-        <item name="colorPrimary">@android:color/system_accent1_600</item>
-        <item name="colorPrimaryVariant">@android:color/system_accent1_700</item>
-        <item name="colorOnPrimary">@color/white</item>
-
-        <!-- Secondary brand color -->
-        <item name="colorSecondary">@android:color/system_accent2_600</item>
-        <item name="colorSecondaryVariant">@android:color/system_accent2_700</item>
-        <item name="colorOnSecondary">@color/black</item>
-        <item name="fontFamily">@font/ubuntu_regular</item>
-
-        <!-- Status bar color -->
-        <item name="android:statusBarColor">@android:color/transparent</item>
-        <item name="android:navigationBarColor">@android:color/transparent</item>
-
-        <!-- Enable window decor fitting -->
-        <item name="android:windowLightStatusBar">true</item>
-        <item name="android:windowLightNavigationBar">true</item>
-    </style>
-</resources>

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

@@ -16,4 +16,5 @@
     
     <color name="surface">@android:color/system_neutral1_50</color>
     <color name="on_surface">@android:color/system_neutral1_900</color>
+    <color name="textColor">#000000</color>
 </resources>

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

@@ -5,6 +5,7 @@
         <item name="colorPrimary">@android:color/system_accent1_600</item>
         <item name="colorPrimaryVariant">@android:color/system_accent1_700</item>
         <item name="colorOnPrimary">@color/white</item>
+        <item name="android:textColor"></item>
         <item name="fontFamily">@font/ubuntu_regular</item>
         
         <!-- Secondary brand color -->