[Android] Prpoperly exit headless fragments

[Geoffrey Métais]

vlc-android | branch: master | Geoffrey Métais <geoffrey.metais at gmail.com> | Wed Jan 23 11:34:59 2019 +0100| [5354d5e85e9af15a1c6c20a4cae01cf0f14e0f4e] | committer: Geoffrey Métais

Prpoperly exit headless fragments

> https://code.videolan.org/videolan/vlc-android/commit/5354d5e85e9af15a1c6c20a4cae01cf0f14e0f4e
---

 .../videolan/vlc/gui/helpers/hf/BaseHeadlessFragment.kt  |  1 +
 .../vlc/gui/helpers/hf/StoragePermissionsDelegate.kt     | 16 +++++++++-------
 .../videolan/vlc/gui/helpers/hf/WriteExternalDelegate.kt |  9 ++++++---
 3 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/vlc-android/src/org/videolan/vlc/gui/helpers/hf/BaseHeadlessFragment.kt b/vlc-android/src/org/videolan/vlc/gui/helpers/hf/BaseHeadlessFragment.kt
index 91391f886..59b08667f 100644
--- a/vlc-android/src/org/videolan/vlc/gui/helpers/hf/BaseHeadlessFragment.kt
+++ b/vlc-android/src/org/videolan/vlc/gui/helpers/hf/BaseHeadlessFragment.kt
@@ -37,6 +37,7 @@ open class BaseHeadlessFragment : Fragment() {
     }
 
     protected fun exit() {
+        retainInstance = false
         activity?.run {
             if (!isFinishing) supportFragmentManager
                 .beginTransaction()
diff --git a/vlc-android/src/org/videolan/vlc/gui/helpers/hf/StoragePermissionsDelegate.kt b/vlc-android/src/org/videolan/vlc/gui/helpers/hf/StoragePermissionsDelegate.kt
index 3eebe2dfb..a1fe03593 100644
--- a/vlc-android/src/org/videolan/vlc/gui/helpers/hf/StoragePermissionsDelegate.kt
+++ b/vlc-android/src/org/videolan/vlc/gui/helpers/hf/StoragePermissionsDelegate.kt
@@ -72,8 +72,9 @@ class StoragePermissionsDelegate : BaseHeadlessFragment() {
     }
 
     private fun requestStorageAccess(write: Boolean) {
-        requestPermissions(arrayOf(if (write) Manifest.permission.WRITE_EXTERNAL_STORAGE else Manifest.permission.READ_EXTERNAL_STORAGE),
-                if (write) Permissions.PERMISSION_WRITE_STORAGE_TAG else Permissions.PERMISSION_STORAGE_TAG)
+        val code = if (write) Manifest.permission.WRITE_EXTERNAL_STORAGE else Manifest.permission.READ_EXTERNAL_STORAGE
+        val tag = if (write) Permissions.PERMISSION_WRITE_STORAGE_TAG else Permissions.PERMISSION_STORAGE_TAG
+        requestPermissions(arrayOf(code), tag)
     }
 
     override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
@@ -85,20 +86,21 @@ class StoragePermissionsDelegate : BaseHeadlessFragment() {
                     storageAccessGranted.value = true
                     deferredGrant.complete(true)
                     exit()
+                    return
                 } else {
                     if (shouldShowRequestPermissionRationale(Manifest.permission.READ_EXTERNAL_STORAGE)) {
                         Permissions.showStoragePermissionDialog(ctx, false)
                         return
-                    } else {
-                        storageAccessGranted.value = false
-                        deferredGrant.complete(false)
-                        exit()
                     }
                 }
                 storageAccessGranted.value = false
                 deferredGrant.complete(false)
+                exit()
+            }
+            Permissions.PERMISSION_WRITE_STORAGE_TAG -> {
+                deferredGrant.complete(grantResults.isGranted())
+                exit()
             }
-            Permissions.PERMISSION_WRITE_STORAGE_TAG -> deferredGrant.complete(grantResults.isGranted())
         }
     }
 
diff --git a/vlc-android/src/org/videolan/vlc/gui/helpers/hf/WriteExternalDelegate.kt b/vlc-android/src/org/videolan/vlc/gui/helpers/hf/WriteExternalDelegate.kt
index 68e5a9261..b604d77e7 100644
--- a/vlc-android/src/org/videolan/vlc/gui/helpers/hf/WriteExternalDelegate.kt
+++ b/vlc-android/src/org/videolan/vlc/gui/helpers/hf/WriteExternalDelegate.kt
@@ -7,10 +7,10 @@ import android.net.Uri
 import android.os.Build
 import android.os.Bundle
 import android.provider.DocumentsContract
-import androidx.fragment.app.FragmentActivity
-import androidx.documentfile.provider.DocumentFile
-import androidx.appcompat.app.AlertDialog
 import android.text.TextUtils
+import androidx.appcompat.app.AlertDialog
+import androidx.documentfile.provider.DocumentFile
+import androidx.fragment.app.FragmentActivity
 import kotlinx.coroutines.launch
 import org.videolan.libvlc.util.AndroidUtil
 import org.videolan.vlc.R
@@ -73,6 +73,7 @@ class WriteExternalDelegate : BaseHeadlessFragment() {
                     if (treeFile?.name == file?.name) {
                         contentResolver.releasePersistableUriPermission(uriPermission.uri, Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
                         deferredGrant.complete(false)
+                        exit()
                         return
                     }
                 }
@@ -80,10 +81,12 @@ class WriteExternalDelegate : BaseHeadlessFragment() {
                 // else set permission
                 contentResolver.takePersistableUriPermission(treeUri, Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
                 deferredGrant.complete(true)
+                exit()
                 return
             }
         }
         deferredGrant.complete(false)
+        exit()
     }
 
     companion object {