diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/util/FileChooserUtil.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/helper/FileChooserHelper.kt
similarity index 89%
rename from V2rayNG/app/src/main/java/com/v2ray/ang/util/FileChooserUtil.kt
rename to V2rayNG/app/src/main/java/com/v2ray/ang/helper/FileChooserHelper.kt
index 0819264a2..700330c55 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/util/FileChooserUtil.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/helper/FileChooserHelper.kt
@@ -1,5 +1,6 @@
-package com.v2ray.ang.util
+package com.v2ray.ang.helper
 
+import android.content.ActivityNotFoundException
 import android.content.Intent
 import android.net.Uri
 import android.util.Log
@@ -13,7 +14,7 @@ import com.v2ray.ang.extension.toast
 /**
  * Helper for choosing files using ACTION_GET_CONTENT intent.
  *
-*/
+ */
 
 class FileChooserHelper(private val activity: AppCompatActivity) {
     private var fileChooserCallback: ((Uri?) -> Unit)? = null
@@ -50,16 +51,11 @@ class FileChooserHelper(private val activity: AppCompatActivity) {
             fileChooserLauncher.launch(
                 Intent.createChooser(intent, activity.getString(R.string.title_file_chooser))
             )
-        } catch (ex: android.content.ActivityNotFoundException) {
+        } catch (ex: ActivityNotFoundException) {
             Log.e(AppConfig.TAG, "File chooser activity not found", ex)
             activity.toast(R.string.toast_require_file_manager)
             fileChooserCallback?.invoke(null)
             fileChooserCallback = null
         }
     }
-}
-
-/**
- * Extension function to create a FileChooserHelper instance.
- */
-fun AppCompatActivity.fileChooserHelper() = FileChooserHelper(this)
+}
\ No newline at end of file
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/util/PermissionUtil.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/helper/PermissionHelper.kt
similarity index 90%
rename from V2rayNG/app/src/main/java/com/v2ray/ang/util/PermissionUtil.kt
rename to V2rayNG/app/src/main/java/com/v2ray/ang/helper/PermissionHelper.kt
index eebf21880..aa500ec41 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/util/PermissionUtil.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/helper/PermissionHelper.kt
@@ -1,4 +1,4 @@
-package com.v2ray.ang.util
+package com.v2ray.ang.helper
 
 import android.content.pm.PackageManager
 import androidx.activity.result.ActivityResultLauncher
@@ -12,7 +12,7 @@ import com.v2ray.ang.extension.toast
 /**
  * Helper for requesting permissions.
  */
-class PermissionRequester(private val activity: AppCompatActivity) {
+class PermissionHelper(private val activity: AppCompatActivity) {
     private var permissionCallback: ((Boolean) -> Unit)? = null
 
     private val permissionLauncher: ActivityResultLauncher<String> =
@@ -43,6 +43,4 @@ class PermissionRequester(private val activity: AppCompatActivity) {
             permissionLauncher.launch(permission)
         }
     }
-}
-
-fun AppCompatActivity.permissionRequester() = PermissionRequester(this)
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/BackupActivity.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/BackupActivity.kt
index 9277cdbd6..f6e40b80e 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/BackupActivity.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/BackupActivity.kt
@@ -154,9 +154,8 @@ class BackupActivity : BaseActivity() {
     }
 
     private fun showFileChooser() {
-        launchFileChooser("*/*") { uri ->
+        launchFileChooser { uri ->
             if (uri == null) {
-                toastError(R.string.toast_failure)
                 return@launchFileChooser
             }
             try {
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/BaseActivity.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/BaseActivity.kt
index 919183fd3..3fd2cae50 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/BaseActivity.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/BaseActivity.kt
@@ -21,9 +21,9 @@ import com.v2ray.ang.handler.SettingsManager
 import com.v2ray.ang.helper.CustomDividerItemDecoration
 import com.v2ray.ang.util.MyContextWrapper
 import com.v2ray.ang.dto.PermissionType
+import com.v2ray.ang.helper.FileChooserHelper
+import com.v2ray.ang.helper.PermissionHelper
 import com.v2ray.ang.util.Utils
-import com.v2ray.ang.util.fileChooserHelper
-import com.v2ray.ang.util.permissionRequester
 
 
 /**
@@ -40,11 +40,14 @@ import com.v2ray.ang.util.permissionRequester
 abstract class BaseActivity : AppCompatActivity() {
     // Progress indicator that sits at the bottom of the toolbar
     private var progressBar: LinearProgressIndicator? = null
-    private val permissionRequester = permissionRequester()
-    private val fileChooser = fileChooserHelper()
+    private lateinit var fileChooser : FileChooserHelper
+    private lateinit var permissionRequester : PermissionHelper
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        fileChooser = FileChooserHelper(this)
+        permissionRequester = PermissionHelper(this)
+
         supportActionBar?.setDisplayHomeAsUpEnabled(true)
         if (!Utils.getDarkModeStatus(this)) {
             WindowCompat.getInsetsController(window, window.decorView).apply {
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/MainActivity.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/MainActivity.kt
index f24edabe0..acc0b1ce5 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/MainActivity.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/MainActivity.kt
@@ -544,9 +544,8 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
      * show file chooser
      */
     private fun showFileChooser() {
-        launchFileChooser("*/*") { uri ->
+        launchFileChooser { uri ->
             if (uri == null) {
-                toastError(R.string.toast_failure)
                 return@launchFileChooser
             }
 
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/ScannerActivity.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/ScannerActivity.kt
index a08c55246..698c73f3e 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/ScannerActivity.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/ScannerActivity.kt
@@ -85,7 +85,6 @@ class ScannerActivity : BaseActivity() {
     private fun showFileChooser() {
         launchFileChooser("image/*") { uri ->
             if (uri == null) {
-                toastError(R.string.toast_failure)
                 return@launchFileChooser
             }
             try {
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/UserAssetActivity.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/UserAssetActivity.kt
index ece6fba11..8dd19d192 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/UserAssetActivity.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/UserAssetActivity.kt
@@ -97,9 +97,8 @@ class UserAssetActivity : BaseActivity() {
     }
 
     private fun showFileChooser2() {
-        launchFileChooser("*/*") { uri ->
+        launchFileChooser { uri ->
             if (uri == null) {
-                toastError(R.string.toast_failure)
                 return@launchFileChooser
             }