diff --git a/app/src/main/java/com/duckai/app/web/MainActivity.kt b/app/src/main/java/com/duckai/app/web/MainActivity.kt
index edc6d31..9457777 100644
--- a/app/src/main/java/com/duckai/app/web/MainActivity.kt
+++ b/app/src/main/java/com/duckai/app/web/MainActivity.kt
@@ -22,7 +22,7 @@ import com.duckai.app.R
 class MainActivity : AppCompatActivity() {
 
     private lateinit var webView: WebView
-    private var filePathCallback: ValueCallback<Array<Uri>>? = null
+    private var pendingFileCallback: ValueCallback<Array<Uri>>? = null
     
     companion object {
         private const val BASE_URL = "https://duck.ai"
@@ -31,23 +31,18 @@ class MainActivity : AppCompatActivity() {
     private val filePickerLauncher = registerForActivityResult(
         ActivityResultContracts.OpenMultipleDocuments()
     ) { uris ->
-        if (uris.isNotEmpty()) {
-            filePathCallback?.onReceiveValue(uris.toTypedArray())
-            Toast.makeText(this, getString(R.string.file_attached), Toast.LENGTH_SHORT).show()
-        } else {
-            filePathCallback?.onReceiveValue(null)
-        }
-        filePathCallback = null
+        pendingFileCallback?.onReceiveValue(uris.toTypedArray())
+        pendingFileCallback = null
     }
 
     private val permissionLauncher = registerForActivityResult(
-        ActivityResultContracts.RequestMultiplePermissions()
-    ) { permissions ->
-        val allGranted = permissions.values.all { it }
-        if (allGranted) {
+        ActivityResultContracts.RequestPermission()
+    ) { granted ->
+        if (granted) {
             openFilePicker()
         } else {
-            Toast.makeText(this, getString(R.string.permission_required), Toast.LENGTH_SHORT).show()
+            pendingFileCallback?.onReceiveValue(null)
+            pendingFileCallback = null
         }
     }
 
@@ -83,8 +78,8 @@ class MainActivity : AppCompatActivity() {
                 filePathCallback: ValueCallback<Array<Uri>>?,
                 fileChooserParams: FileChooserParams?
             ): Boolean {
-                this@MainActivity.filePathCallback = filePathCallback
-                checkPermissionAndPickFile()
+                pendingFileCallback = filePathCallback
+                checkPermissionAndOpenPicker()
                 return true
             }
         }
@@ -103,27 +98,15 @@ class MainActivity : AppCompatActivity() {
         }
     }
 
-    private fun checkPermissionAndPickFile() {
+    private fun checkPermissionAndOpenPicker() {
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
-            val permissions = arrayOf(
-                Manifest.permission.READ_MEDIA_IMAGES,
-                Manifest.permission.READ_MEDIA_VIDEO,
-                Manifest.permission.READ_MEDIA_AUDIO
-            )
-            val notGranted = permissions.filter { 
-                ContextCompat.checkSelfPermission(this, it) != PackageManager.PERMISSION_GRANTED
-            }
-            if (notGranted.isEmpty()) {
-                openFilePicker()
-            } else {
-                permissionLauncher.launch(notGranted.toTypedArray())
-            }
+            openFilePicker()
         } else {
             if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) 
                 == PackageManager.PERMISSION_GRANTED) {
                 openFilePicker()
             } else {
-                permissionLauncher.launch(arrayOf(Manifest.permission.READ_EXTERNAL_STORAGE))
+                permissionLauncher.launch(Manifest.permission.READ_EXTERNAL_STORAGE)
             }
         }
     }