My app randomally crashes the device (Galaxy Nexus and Nexus 4) with AccessibilityManager unhandled event

Question

This started to happen when I switched to 4.2 on my Galaxy Nexus and persists with my Nexus 4. My app crashes (soft reset) the device randomly, even with no user input.

Here is the Logcat right before the crash:

01-17 12:54:24.960: E/AccessibilityManager(10497): Error during sending EventType: TYPE_WINDOW_CONTENT_CHANGED; EventTime: 151405384; PackageName: com.ntasher.homeconII; MovementGranularity: 0; Action: 0 [ ClassName: android.widget.FrameLayout; Text: []; ContentDescription: null; ItemCount: -1; CurrentItemIndex: -1; IsEnabled: true; IsPassword: false; IsChecked: false; IsFullScreen: false; Scrollable: false; BeforeText: null; FromIndex: -1; ToIndex: -1; ScrollX: -1; ScrollY: -1; MaxScrollX: -1; MaxScrollY: -1; AddedCount: -1; RemovedCount: -1; ParcelableData: null ]; recordCount: 0 
01-17 12:54:24.960: E/AccessibilityManager(10497): android.os.DeadObjectException
01-17 12:54:24.960: E/AccessibilityManager(10497):  at android.os.BinderProxy.transact(Native Method)
01-17 12:54:24.960: E/AccessibilityManager(10497):  at android.view.accessibility.IAccessibilityManager$Stub$Proxy.sendAccessibilityEvent(IAccessibilityManager.java:227)
01-17 12:54:24.960: E/AccessibilityManager(10497):  at android.view.accessibility.AccessibilityManager.sendAccessibilityEvent(AccessibilityManager.java:265)
01-17 12:54:24.960: E/AccessibilityManager(10497):  at android.view.ViewRootImpl.requestSendAccessibilityEvent(ViewRootImpl.java:4700)
01-17 12:54:24.960: E/AccessibilityManager(10497):  at android.view.View.sendAccessibilityEventUncheckedInternal(View.java:4699)
01-17 12:54:24.960: E/AccessibilityManager(10497):  at android.view.View.sendAccessibilityEventUnchecked(View.java:4680)
01-17 12:54:24.960: E/AccessibilityManager(10497):  at android.view.View.sendAccessibilityEventInternal(View.java:4657)
01-17 12:54:24.960: E/AccessibilityManager(10497):  at android.view.View.sendAccessibilityEvent(View.java:4626)
01-17 12:54:24.960: E/AccessibilityManager(10497):  at com.android.internal.policy.impl.PhoneWindow$DecorView.sendAccessibilityEvent(PhoneWindow.java:2067)
01-17 12:54:24.960: E/AccessibilityManager(10497):  at android.view.ViewRootImpl$SendWindowContentChangedAccessibilityEvent.run(ViewRootImpl.java:5462)
01-17 12:54:24.960: E/AccessibilityManager(10497):  at android.os.Handler.handleCallback(Handler.java:725)
01-17 12:54:24.960: E/AccessibilityManager(10497):  at android.os.Handler.dispatchMessage(Handler.java:92)
01-17 12:54:24.960: E/AccessibilityManager(10497):  at android.os.Looper.loop(Looper.java:137)
01-17 12:54:24.960: E/AccessibilityManager(10497):  at android.app.ActivityThread.main(ActivityThread.java:5039)
01-17 12:54:24.960: E/AccessibilityManager(10497):  at java.lang.reflect.Method.invokeNative(Native Method)
01-17 12:54:24.960: E/AccessibilityManager(10497):  at java.lang.reflect.Method.invoke(Method.java:511)
01-17 12:54:24.960: E/AccessibilityManager(10497):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
01-17 12:54:24.960: E/AccessibilityManager(10497):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
01-17 12:54:24.960: E/AccessibilityManager(10497):  at dalvik.system.NativeStart.main(Native Method)
01-17 12:54:25.931: E/InputEventReceiver(10497): channel '42466698 com.ntasher.homeconII/com.ntasher.homeconII.HomeConII (client)' ~ Publisher closed input channel or an error occurred.  events=0x9

After that the device soft resets (directly to the glowing "X").

What's happening here? is it some unhandled exception? how can I catch it? Thanks.

Answer 1

You haven't provided any code, but I have a suspicion that this is the problem here.

You're passing an Activity Context when creating some object that's bound to the system. Due to this, when you're application is shut, and the object stays, it becomes a dead reference. A reference to an Activity which is no longer alive and visible.

In some place you're going to have lines like:

SomeClass object = new SomeClass(this); //Or getActivity() or something.

Here, change the Context parameter to getApplicationContext() (unless that code is creating and displaying a dialog, in which case let the Activity context be).