Android Exception when resuming the app after a couple of hours

Question

I get this weird exception when I resume my app after a few hours. The exception looks like this:

01-08 08:38:39.421: E/AndroidRuntime(10401): FATAL EXCEPTION: main 01-08 08:38:39.421: E/AndroidRuntime(10401): Process: com.app, PID: 10401 01-08 08:38:39.421: E/AndroidRuntime(10401): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.app/com.app.HomeActivity}: java.lang.IllegalStateException: Already added! 01-08 08:38:39.421: E/AndroidRuntime(10401): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195) 01-08 08:38:39.421: E/AndroidRuntime(10401): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245) 01-08 08:38:39.421: E/AndroidRuntime(10401): at android.app.ActivityThread.access$800(ActivityThread.java:135) 01-08 08:38:39.421: E/AndroidRuntime(10401): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 01-08 08:38:39.421: E/AndroidRuntime(10401): at android.os.Handler.dispatchMessage(Handler.java:102) 01-08 08:38:39.421: E/AndroidRuntime(10401): at android.os.Looper.loop(Looper.java:136) 01-08 08:38:39.421: E/AndroidRuntime(10401): at android.app.ActivityThread.main(ActivityThread.java:5017) 01-08 08:38:39.421: E/AndroidRuntime(10401): at java.lang.reflect.Method.invokeNative(Native Method) 01-08 08:38:39.421: E/AndroidRuntime(10401): at java.lang.reflect.Method.invoke(Method.java:515) 01-08 08:38:39.421: E/AndroidRuntime(10401): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 01-08 08:38:39.421: E/AndroidRuntime(10401): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 01-08 08:38:39.421: E/AndroidRuntime(10401): at dalvik.system.NativeStart.main(Native Method) 01-08 08:38:39.421: E/AndroidRuntime(10401): Caused by: java.lang.IllegalStateException: Already added! 01-08 08:38:39.421: E/AndroidRuntime(10401): at android.support.v4.app.FragmentManagerImpl.restoreAllState(FragmentManager.java:1828) 01-08 08:38:39.421: E/AndroidRuntime(10401): at android.support.v4.app.FragmentActivity.onCreate(FragmentActivity.java:213) 01-08 08:38:39.421: E/AndroidRuntime(10401): at com.app.SlidingSherlockFragmentActivity.onCreate(SlidingSherlockFragmentActivity.java:24) 01-08 08:38:39.421: E/AndroidRuntime(10401): at com.app.BaseSlidingMenuActivity.onCreate(BaseSlidingMenuActivity.java:17) 01-08 08:38:39.421: E/AndroidRuntime(10401): at com.app.HomeActivity.onCreate(HomeActivity.java:81) 01-08 08:38:39.421: E/AndroidRuntime(10401): at android.app.Activity.performCreate(Activity.java:5231) 01-08 08:38:39.421: E/AndroidRuntime(10401): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 01-08 08:38:39.421: E/AndroidRuntime(10401): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159) 01-08 08:38:39.421: E/AndroidRuntime(10401): ... 11 more 01-08 08:38:39.421: W/ActivityManager(768): Force finishing activity com.app/.HomeActivity 01-08 08:38:39.941: W/ActivityManager(768): Activity pause timeout for ActivityRecord{43577368 u0 com.app/.HomeActivity t549 f} 01-08 08:38:40.051: W/Sidekick_LocationOracleImpl(15233): Best location was null 01-08 08:38:49.371: E/WindowManager(768): Starting window AppWindowToken{45524120 token=Token{433ba630 ActivityRecord{43577368 u0 com.app/.HomeActivity t549}}} timed out 01-08 08:38:50.041: W/ActivityManager(768): Activity destroy timeout for ActivityRecord{43577368 u0 com.app/.HomeActivity t549 f}

Line 81 of HomeActivity is the following line in the onCreate method.

super.onCreate(savedInstanceState);

My Activities don't have any launchMode in the AndroidManifest.xml

I dont really know what to do and I can't find anything about this exception.

Answer 1

You are trying to add a fragment to your activity that has already been added. The following line near the middle part of the stack trace you pasted seems to indicate so:

E/AndroidRuntime(10401): Caused by: java.lang.IllegalStateException: Already added! 01-08 08:38:39.421: E/AndroidRuntime(10401): at android.support.v4.app.FragmentManagerImpl.restoreAllState(FragmentManager.java:1828) 01-08 08:38:39.421: E/AndroidRuntime(10401): at android.support.v4.app.FragmentActivity.onCreate(FragmentActivity.java:213)