crash when going from landscape to vertical mode everywhere

[erg]

Start program in landscape mode, turn to vertical, crash.

• already logged in state

03-04 21:34:00.825: E/AndroidRuntime(27088): FATAL EXCEPTION: main
03-04 21:34:00.825: E/AndroidRuntime(27088): Process: com.codepath.caltraindating, PID: 27088
03-04 21:34:00.825: E/AndroidRuntime(27088): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.codepath.caltraindating/com.codepath.caltraindating.MainActivity}: java.lang.NullPointerException
03-04 21:34:00.825: E/AndroidRuntime(27088):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3738)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at android.app.ActivityThread.access$900(ActivityThread.java:135)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1202)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at android.os.Handler.dispatchMessage(Handler.java:102)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at android.os.Looper.loop(Looper.java:136)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at android.app.ActivityThread.main(ActivityThread.java:5017)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at java.lang.reflect.Method.invokeNative(Native Method)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at java.lang.reflect.Method.invoke(Method.java:515)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at dalvik.system.NativeStart.main(Native Method)
03-04 21:34:00.825: E/AndroidRuntime(27088): Caused by: java.lang.NullPointerException
03-04 21:34:00.825: E/AndroidRuntime(27088):    at com.codepath.caltraindating.fragments.CheckinFragment.initRecentTrains(CheckinFragment.java:237)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at com.codepath.caltraindating.fragments.CheckinFragment.onCreateView(CheckinFragment.java:87)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:871)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1083)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1065)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at android.support.v4.app.FragmentManagerImpl.dispatchActivityCreated(FragmentManager.java:1844)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:519)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1171)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at android.app.Activity.performStart(Activity.java:5241)
03-04 21:34:00.825: E/AndroidRuntime(27088):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2168)
03-04 21:34:00.825: E/AndroidRuntime(27088):    ... 12 more

[erg]

Need to fix this by the method he mentioned in class, some or all of these:

landscape
- onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState)
}
onRestoreInstanceState

http://stackoverflow.com/questions/4096169/onsaveinstancestate-and-onrestoreinstancestate

onPostCreate
onConfigurationChange

[tristan-meng]

Seems the listener is null out when the configuration (portrait - landscape) changes.

[erg]

We could just force it to be portrait mode all the time as an easy fix (?)

[tristan-meng]

That's a good idea