Crash when rotate

[aleister09]

Actual behaviour

If the user rotate the SmartPhone when the info is loading the app crashes
It happens in Activities, Favorites, Photos, Shared

Steps to reproduce

1. Open the App
2. Open Photos
3. Rotate SmartPhone when the info is loading

Environment data

Android version: 7.1.2

Device model: Nexus 5X

Stock or customized system:

Nextcloud app version: Master

Nextcloud server version: 11

Logs

04-19 12:10:03.438 30036-32726/com.nextcloud.client E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #11
                                                                      Process: com.nextcloud.client, PID: 30036
                                                                      java.lang.RuntimeException: An error occurred while executing doInBackground()
                                                                          at android.os.AsyncTask$3.done(AsyncTask.java:325)
                                                                          at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
                                                                          at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
                                                                          at java.util.concurrent.FutureTask.run(FutureTask.java:242)
                                                                          at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243)
                                                                          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
                                                                          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
                                                                          at java.lang.Thread.run(Thread.java:761)
                                                                       Caused by: java.lang.IllegalArgumentException: Trying to execute a remote operation with a NULL Context
                                                                          at com.owncloud.android.lib.common.operations.RemoteOperation.execute(RemoteOperation.java:106)
                                                                          at com.owncloud.android.ui.fragment.OCFileListFragment$12.doInBackground(OCFileListFragment.java:1319)
                                                                          at android.os.AsyncTask$2.call(AsyncTask.java:305)
                                                                          at java.util.concurrent.FutureTask.run(FutureTask.java:237)
                                                                          at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243) 
                                                                          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133) 
                                                                          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607) 
                                                                          at java.lang.Thread.run(Thread.java:761) 

NOTE: Be super sure to remove sensitive data like passwords, note that everybody can look here! You can use the Issue Template application to prefill some of the required information: https://apps.nextcloud.com/apps/issuetemplate

[mario]

@tobiasKaminsky please look into this :)