Android. OS 7. Split mode. App crashes with split mode

[danylopidhainyi23]

Device: Nexus 5X, OS 7.0

There are 2 ways to reproduce it:

1

• Launch app
• Open Events screen (Session, BoFs, Social events)
• Activate split mode
• Actual: Crash

2

• Launch app
• Open any screen ecxept Events
• Activate split mode
• Change device position to landskape
• Actual: Crash

Crash log attached: 12-01 15:59:27.611: E/AndroidRuntime(19996): FATAL EXCEPTION: main 12-01 15:59:27.611: E/AndroidRuntime(19996): Process: com.ls.drupalconapp, PID: 19996 12-01 15:59:27.611: E/AndroidRuntime(19996): java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.SharedPreferences android.content.Context.getSharedPreferences(java.lang.String, int)' on a null object reference 12-01 15:59:27.611: E/AndroidRuntime(19996): at com.connfa.model.PreferencesManager.(PreferencesManager.java:29) 12-01 15:59:27.611: E/AndroidRuntime(19996): at com.connfa.model.PreferencesManager.create(PreferencesManager.java:23) 12-01 15:59:27.611: E/AndroidRuntime(19996): at com.connfa.utils.DateUtils.getTimeZone(DateUtils.java:18) 12-01 15:59:27.611: E/AndroidRuntime(19996): at com.connfa.utils.DateUtils.isToday(DateUtils.java:38) 12-01 15:59:27.611: E/AndroidRuntime(19996): at com.connfa.ui.fragment.EventHolderFragment.switchToCurrentDay(EventHolderFragment.java:272) 12-01 15:59:27.611: E/AndroidRuntime(19996): at com.connfa.ui.fragment.EventHolderFragment.updateViews(EventHolderFragment.java:266) 12-01 15:59:27.611: E/AndroidRuntime(19996): at com.connfa.ui.fragment.EventHolderFragment.access$300(EventHolderFragment.java:38) 12-01 15:59:27.611: E/AndroidRuntime(19996): at com.connfa.ui.fragment.EventHolderFragment$LoadData.onPostExecute(EventHolderFragment.java:193) 12-01 15:59:27.611: E/AndroidRuntime(19996): at com.connfa.ui.fragment.EventHolderFragment$LoadData.onPostExecute(EventHolderFragment.java:184) 12-01 15:59:27.611: E/AndroidRuntime(19996): at android.os.AsyncTask.finish(AsyncTask.java:660) 12-01 15:59:27.611: E/AndroidRuntime(19996): at android.os.AsyncTask.-wrap1(AsyncTask.java) 12-01 15:59:27.611: E/AndroidRuntime(19996): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:677) 12-01 15:59:27.611: E/AndroidRuntime(19996): at android.os.Handler.dispatchMessage(Handler.java:102) 12-01 15:59:27.611: E/AndroidRuntime(19996): at android.os.Looper.loop(Looper.java:154) 12-01 15:59:27.611: E/AndroidRuntime(19996): at android.app.ActivityThread.main(ActivityThread.java:6077) 12-01 15:59:27.611: E/AndroidRuntime(19996): at java.lang.reflect.Method.invoke(Native Method) 12-01 15:59:27.611: E/AndroidRuntime(19996): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865) 12-01 15:59:27.611: E/AndroidRuntime(19996): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)

[rock3r]

I have observed some concerning behaviour with regards to split screen mode:

If you don't cancel the splitscreen selection as shown above (i.e., you select the secondary window, then close splitscreen mode), then the behaviour does not happen.

[TarasKunyk]

Hello, App wasn't designed to support split screen mode (since it was added in Nougat). So this feature was never tested. So we have two options to resolve this issue:

• Spend unpredictable amount of time testing all screens and resolving issues (Which is more accurate but time-consuming approach)
• Just disable split screen mode using android:resizeableActivity = false flag

[rock3r]

Well if an app is well designed it should work -- or almost work -- out of the box in split screen mode (usually the only thing you need to do is move code from onResume/onPause to onStart/onStop). I'm looking into solving the problem at the root, currently. In the meantime I'll add the resizeableActivity attribute, but that's just a workaround

[developerRojina]

You can have a look at this: https://github.com/wix/react-native-navigation/issues/2191#issuecomment-362186304