Made some changes

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

@@ -54,7 +54,7 @@ class AudioGalleryActivity : BaseGalleryActivity() {
         }
     }
 
-    override fun openPreview(file: File) {
+    override fun openPreview() {
         // Implement audio preview
     }
 }

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

@@ -62,7 +62,7 @@ abstract class BaseGalleryActivity : AppCompatActivity() {
         adapter.submitList(files)
     }
 
-    abstract fun openPreview(file: File)
+    abstract fun openPreview()
 
     private fun checkPermissions() {
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {

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

@@ -54,7 +54,7 @@ class DocumentsActivity : BaseGalleryActivity() {
         }
     }
 
-    override fun openPreview(file: File) {
+    override fun openPreview() {
         // Implement document preview
     }
 }

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

@@ -1,7 +1,6 @@
 package devs.org.calculator.activities
 
 import android.app.RecoverableSecurityException
-import android.content.Context
 import android.content.Intent
 import android.net.Uri
 import android.os.Build
@@ -14,10 +13,8 @@ import androidx.activity.result.ActivityResultLauncher
 import androidx.activity.result.IntentSenderRequest
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.documentfile.provider.DocumentFile
-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
 
@@ -28,62 +25,6 @@ class ImageGalleryActivity : BaseGalleryActivity() {
     private var selectedImageUri: Uri? = null
     private lateinit var pickImageLauncher: ActivityResultLauncher<Intent>
 
-    private suspend fun deletePhotoFromExternalStorage(photoUri: Uri) {
-        withContext(Dispatchers.IO) {
-            try {
-                // First try to delete using DocumentFile
-                val documentFile = DocumentFile.fromSingleUri(this@ImageGalleryActivity, photoUri)
-                if (documentFile?.exists() == true && documentFile.canWrite()) {
-                    val deleted = documentFile.delete()
-                    withContext(Dispatchers.Main) {
-                        if (deleted) {
-                            Toast.makeText(this@ImageGalleryActivity, "File deleted successfully", Toast.LENGTH_SHORT).show()
-                            selectedImageUri = null
-                        } else {
-                            Toast.makeText(this@ImageGalleryActivity, "Failed to delete file", Toast.LENGTH_SHORT).show()
-                        }
-                    }
-                    return@withContext
-                }
-
-                // If DocumentFile approach fails, try content resolver
-                try {
-                    contentResolver.delete(photoUri, null, null)
-                    withContext(Dispatchers.Main) {
-                        Toast.makeText(this@ImageGalleryActivity, "File deleted successfully", Toast.LENGTH_SHORT).show()
-                    }
-                } catch (e: SecurityException) {
-                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
-                        val intentSender = when {
-                            Build.VERSION.SDK_INT >= Build.VERSION_CODES.R -> {
-                                MediaStore.createDeleteRequest(contentResolver, listOf(photoUri)).intentSender
-                            }
-                            else -> {
-                                val recoverableSecurityException = e as? RecoverableSecurityException
-                                recoverableSecurityException?.userAction?.actionIntent?.intentSender
-                            }
-                        }
-                        intentSender?.let { sender ->
-                            withContext(Dispatchers.Main) {
-                                intentSenderLauncher.launch(
-                                    IntentSenderRequest.Builder(sender).build()
-                                )
-                            }
-                        }
-                    }
-                }
-            } catch (e: Exception) {
-                withContext(Dispatchers.Main) {
-                    Toast.makeText(
-                        this@ImageGalleryActivity,
-                        "Error deleting file: ${e.message}",
-                        Toast.LENGTH_LONG
-                    ).show()
-                }
-            }
-        }
-    }
-
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setupIntentSenderLauncher()
@@ -156,10 +97,9 @@ class ImageGalleryActivity : BaseGalleryActivity() {
         }
     }
 
-    override fun openPreview(file: File) {
+    override fun openPreview() {
         val intent = Intent(this, PreviewActivity::class.java).apply {
-            putExtra(PreviewActivity.EXTRA_FILE_PATH, file.absolutePath)
+            putExtra("type", fileType)
-            putExtra(PreviewActivity.EXTRA_FILE_TYPE, fileType.name)
         }
         startActivity(intent)
     }

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

@@ -1,22 +1,14 @@
 package devs.org.calculator.activities
 
-import ImagePreviewAdapter
+
 import android.os.Bundle
-import android.view.View
-import android.widget.MediaController
 import androidx.appcompat.app.AppCompatActivity
-import com.bumptech.glide.Glide
+import devs.org.calculator.adapters.ImagePreviewAdapter
 import devs.org.calculator.databinding.ActivityPreviewBinding
-import devs.org.calculator.utils.FileManager
 import java.io.File
 
 class PreviewActivity : AppCompatActivity() {
 
-    companion object {
-        const val EXTRA_FILE_PATH = "file_path"
-        const val EXTRA_FILE_TYPE = "file_type"
-    }
-
     private lateinit var binding: ActivityPreviewBinding
     private var currentPosition: Int = 0
     private lateinit var files: List<File>
@@ -41,7 +33,6 @@ class PreviewActivity : AppCompatActivity() {
     private fun setupImagePreview() {
         val adapter = ImagePreviewAdapter(this, files)
         binding.viewPager.adapter = adapter
-        binding.viewPager.currentItem = currentPosition
     }
 
     override fun onSupportNavigateUp(): Boolean {

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

@@ -55,10 +55,9 @@ class VideoGalleryActivity : BaseGalleryActivity() {
         }
     }
 
-    override fun openPreview(file: File) {
+    override fun openPreview() {
         val intent = Intent(this, PreviewActivity::class.java).apply {
-            putExtra(PreviewActivity.EXTRA_FILE_PATH, file.absolutePath)
+            putExtra("type", fileType)
-            putExtra(PreviewActivity.EXTRA_FILE_TYPE, fileType.name)
         }
         startActivity(intent)
     }

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

@@ -1,36 +1,33 @@
+package devs.org.calculator.adapters
+
 import android.content.Context
-import android.view.View
+import android.view.LayoutInflater
 import android.view.ViewGroup
-import androidx.viewpager.widget.PagerAdapter
+import androidx.recyclerview.widget.RecyclerView
 import com.bumptech.glide.Glide
-import com.github.chrisbanes.photoview.PhotoView
+import devs.org.calculator.databinding.ItemFileBinding
 import java.io.File
 
 class ImagePreviewAdapter(
     private val context: Context,
     private val images: List<File>
-) : PagerAdapter() {
+) : RecyclerView.Adapter<ImagePreviewAdapter.ImageViewHolder>() {
 
-    override fun instantiateItem(container: ViewGroup, position: Int): Any {
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ImageViewHolder {
-        val photoView = PhotoView(context)
+        val binding = ItemFileBinding.inflate(
-        photoView.layoutParams = ViewGroup.LayoutParams(
+            LayoutInflater.from(context), parent, false
-            ViewGroup.LayoutParams.MATCH_PARENT,
-            ViewGroup.LayoutParams.MATCH_PARENT
         )
+        return ImageViewHolder(binding)
+    }
 
+    override fun onBindViewHolder(holder: ImageViewHolder, position: Int) {
+        val imageUrl = images[position]
         Glide.with(context)
-            .load(images[position])
+            .load(imageUrl)
-            .into(photoView)
+            .into(holder.binding.imageView)
-
-        container.addView(photoView)
-        return photoView
     }
 
-    override fun destroyItem(container: ViewGroup, position: Int, obj: Any) {
+    override fun getItemCount(): Int = images.size
-        container.removeView(obj as View)
-    }
 
-    override fun getCount(): Int = images.size
+    inner class ImageViewHolder(val binding: ItemFileBinding) : RecyclerView.ViewHolder(binding.root)
-
+}
-    override fun isViewFromObject(view: View, obj: Any): Boolean = view === obj
-} 

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

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical">
@@ -8,12 +9,44 @@
         android:id="@+id/toolbar"
         android:layout_width="match_parent"
         android:layout_height="?attr/actionBarSize"
-        android:background="?attr/colorPrimary" />
+        android:background="?attr/colorPrimary"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
 
-    <androidx.viewpager.widget.ViewPager
+    <androidx.viewpager2.widget.ViewPager2
         android:id="@+id/viewPager"
         android:layout_width="match_parent"
         android:layout_height="0dp"
-        android:layout_weight="1" />
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/toolbar" />
 
-</LinearLayout>
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center_horizontal"
+        android:orientation="horizontal"
+        android:padding="8dp"
+        app:layout_constraintBottom_toBottomOf="@+id/viewPager"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent">
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/unhide"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_margin="6dp"
+            android:text="Unhide" />
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/delete"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_margin="6dp"
+            android:text="Delete" />
+
+    </LinearLayout>
+
+</androidx.constraintlayout.widget.ConstraintLayout>