Fix. [BUG] Some storages do not work when uploading content from other apps Drive

src/com/owncloud/android/ui/activity/FileDisplayActivity.java

@@ -189,6 +189,16 @@ public class FileDisplayActivity extends HookActivity
         //getSupportActionBar().setDisplayHomeAsUpEnabled(true);
         getSupportActionBar().setHomeButtonEnabled(true);
 
+        // Init Fragment without UI to retain AsyncTask across configuration changes
+        FragmentManager fm = getSupportFragmentManager();
+        TaskRetainerFragment taskRetainerFragment =
+                (TaskRetainerFragment) fm.findFragmentByTag(TaskRetainerFragment.FTAG_TASK_RETAINER_FRAGMENT);
+        if (taskRetainerFragment == null) {
+            taskRetainerFragment = new TaskRetainerFragment();
+            fm.beginTransaction()
+                    .add(taskRetainerFragment, TaskRetainerFragment.FTAG_TASK_RETAINER_FRAGMENT).commit();
+        }   // else, Fragment already created and retained across configuration change
+
         Log_OC.v(TAG, "onCreate() end");
     }
 

src/com/owncloud/android/ui/activity/ReceiveExternalFilesActivity.java

@@ -145,6 +145,16 @@ public class ReceiveExternalFilesActivity extends FileActivity
         mSyncBroadcastReceiver = new SyncBroadcastReceiver();
         registerReceiver(mSyncBroadcastReceiver, syncIntentFilter);
 
+        // Init Fragment without UI to retain AsyncTask across configuration changes
+        FragmentManager fm = getSupportFragmentManager();
+        TaskRetainerFragment taskRetainerFragment =
+                (TaskRetainerFragment) fm.findFragmentByTag(TaskRetainerFragment.FTAG_TASK_RETAINER_FRAGMENT);
+        if (taskRetainerFragment == null) {
+            taskRetainerFragment = new TaskRetainerFragment();
+            fm.beginTransaction()
+                    .add(taskRetainerFragment, TaskRetainerFragment.FTAG_TASK_RETAINER_FRAGMENT).commit();
+        }   // else, Fragment already created and retained across configuration change
+
     }
 
     @Override

src/com/owncloud/android/ui/fragment/TaskRetainerFragment.java

@@ -45,7 +45,11 @@ public class TaskRetainerFragment extends Fragment {
     public void onAttach(Context context) {
         super.onAttach(context);
         if (mTask != null) {
-            mTask.setListener((CopyAndUploadContentUrisTask.OnCopyTmpFilesTaskListener) context);
+            if (context instanceof ReceiveExternalFilesActivity) {
+                mTask.setListener((CopyAndUploadContentUrisTask.OnCopyTmpFilesTaskListener) context);
+            } else {
+                mTask.setListener(null);
+            }
         }
     }
 

src/com/owncloud/android/ui/helpers/UriUploader.java

@@ -189,12 +189,10 @@ public class UriUploader {
         // Init Fragment without UI to retain AsyncTask across configuration changes
         TaskRetainerFragment taskRetainerFragment =
                 (TaskRetainerFragment) fm.findFragmentByTag(TaskRetainerFragment.FTAG_TASK_RETAINER_FRAGMENT);
-        if (taskRetainerFragment == null) {
-            taskRetainerFragment = new TaskRetainerFragment();
-            fm.beginTransaction()
-                .add(taskRetainerFragment, TaskRetainerFragment.FTAG_TASK_RETAINER_FRAGMENT).commit();
-        }   // else, Fragment was created before
-        taskRetainerFragment.setTask(copyTask);
+
+        if (taskRetainerFragment != null) {
+            taskRetainerFragment.setTask(copyTask);
+        }
 
         copyTask.execute(
                 CopyAndUploadContentUrisTask.makeParamsToExecute(