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android10 / Android-CleanArchitecture

This is a sample app that is part of a series of blog posts I have written about how to architect an android application using Uncle Bob's clean architecture approach.
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NullPointerException on UserListFragment is being recreated with Don't keep Activities #144

Open farmazon3000 opened 8 years ago

farmazon3000 commented 8 years ago

Scenario:

05-09 16:26:44.956 24604-24604/com.fernanependocejas.android10.sample.presentation E/AndroidRuntime: FATAL EXCEPTION: main Process: com.fernanependocejas.android10.sample.presentation, PID: 24604 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.fernanependocejas.android10.sample.presentation/com.fernandocejas.android10.sample.presentation.view.activity.UserDetailsActivity}: java.lang.NullPointerException: Attempt to invoke interface method 'void com.fernandocejas.android10.sample.presentation.internal.di.components.UserComponent.inject(com.fernandocejas.android10.sample.presentation.view.fragment.UserDetailsFragment)' on a null object reference at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2484) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2544) at android.app.ActivityThread.access$900(ActivityThread.java:150) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1394) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:168) at android.app.ActivityThread.main(ActivityThread.java:5845) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:797) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:687) Caused by: java.lang.NullPointerException: Attempt to invoke interface method 'void com.fernandocejas.android10.sample.presentation.internal.di.components.UserComponent.inject(com.fernandocejas.android10.sample.presentation.view.fragment.UserDetailsFragment)' on a null object reference at com.fernandocejas.android10.sample.presentation.view.fragment.UserDetailsFragment.onCreate(UserDetailsFragment.java:48) at android.app.Fragment.performCreate(Fragment.java:2198) at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:942) at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1148) at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1130) at android.app.FragmentManagerImpl.dispatchCreate(FragmentManager.java:1948) at android.app.FragmentController.dispatchCreate(FragmentController.java:141) at android.app.Activity.onCreate(Activity.java:924) at com.fernandocejas.android10.sample.presentation.view.activity.BaseActivity.onCreate(BaseActivity.java:22) at com.fernandocejas.android10.sample.presentation.view.activity.UserDetailsActivity.onCreate(UserDetailsActivity.java:37) at android.app.Activity.performCreate(Activity.java:6248) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1125) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2437) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2544)  at android.app.ActivityThread.access$900(ActivityThread.java:150)  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1394)  at android.os.Handler.dispatchMessage(Handler.java:102)  at android.os.Looper.loop(Looper.java:168)  at android.app.ActivityThread.main(ActivityThread.java:5845)  at java.lang.reflect.Method.invoke(Native Method)  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:797)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:687) 

This may be related to #92.

farmazon3000 commented 8 years ago

It happens also on Users List Activity so it's not UserListFragment but general problem.

FizzyMobile commented 8 years ago

Check out issue https://github.com/android10/Android-CleanArchitecture/issues/124 for more info, and also this PR https://github.com/android10/Android-CleanArchitecture/pull/134.