NPE in NewsReaderListActivity.

[kadamski]

Hi,

I recently had two crashes of the app on one of my phones. Here's the backtrace:

AndroidRuntime: FATAL EXCEPTION: main
AndroidRuntime: Process: de.luhmer.owncloudnewsreader, PID: 18983
AndroidRuntime: java.lang.NullPointerException: Attempt to read from field 'android.support.v4.widget.SwipeRefreshLayout de.luhmer.owncloudnewsreader.NewsReaderListFragment.mPullToRefreshLayout' on a null object reference
AndroidRuntime:     at de.luhmer.owncloudnewsreader.NewsReaderListActivity.UpdateButtonLayout(NewsReaderListActivity.java:457)
AndroidRuntime:     at de.luhmer.owncloudnewsreader.NewsReaderListActivity.onCreateOptionsMenu(NewsReaderListActivity.java:495)
AndroidRuntime:     at android.app.Activity.onCreatePanelMenu(Activity.java:2823)
AndroidRuntime:     at android.support.v4.app.FragmentActivity.onCreatePanelMenu(FragmentActivity.java:277)
AndroidRuntime:     at android.support.v7.internal.view.WindowCallbackWrapper.onCreatePanelMenu(WindowCallbackWrapper.java:84)
AndroidRuntime:     at android.support.v7.app.AppCompatDelegateImplBase$AppCompatWindowCallbackBase.onCreatePanelMenu(AppCompatDelegateImplBase.java:273)
AndroidRuntime:     at android.support.v7.internal.view.WindowCallbackWrapper.onCreatePanelMenu(WindowCallbackWrapper.java:84)
AndroidRuntime:     at android.support.v7.internal.app.ToolbarActionBar.populateOptionsMenu(ToolbarActionBar.java:449)
AndroidRuntime:     at android.support.v7.internal.app.ToolbarActionBar$1.run(ToolbarActionBar.java:66)
AndroidRuntime:     at android.os.Handler.handleCallback(Handler.java:739)
AndroidRuntime:     at android.os.Handler.dispatchMessage(Handler.java:95)
AndroidRuntime:     at android.os.Looper.loop(Looper.java:215)
AndroidRuntime:     at android.app.ActivityThread.main(ActivityThread.java:5389)
AndroidRuntime:     at java.lang.reflect.Method.invoke(Native Method)
AndroidRuntime:     at java.lang.reflect.Method.invoke(Method.java:372)
AndroidRuntime:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1020)
AndroidRuntime:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:815)

It's on Sony Xperia Z Ultra running Lollipop.