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POAndroid ICS : Failed to handle callback; interface not implemented, callback:android.view.View$PerformClick@40d80cc8
 

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  1. POAndroid ICS : Failed to handle callback; interface not implemented, callback:android.view.View$PerformClick@40d80cc8
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    <p>I am experiencing very weird behavior on ICS devices. I have a button in layout and click Listener as bellow . </p> <pre><code> @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Button b = (Button) findViewById(R.id.button1); b.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // To just demonstrate weird behavior, i am throwing run-time exception throw new RuntimeException("testing weird behavior on ICS"); //String s = null; s.length(); You can try this , application does not crash. } }); } </code></pre> <p>In normal conditions, this should crash application but surprisingly, i can see a crash in logcat as bellow but application does not crash. Rather i see </p> <pre><code>Failed to handle callback; interface not implemented, callback:android.view.View$PerformClick@40d80cc8 java.lang.RuntimeException: testing weird behaviour at com.example.sampleproject.MainActivity$1.onClick(MainActivity.java:21) at android.view.View.performClick(View.java:3538) at android.view.View$PerformClick.run(View.java:14330) at android.os.Handler.handleCallback(Handler.java:608) at android.os.Handler.dispatchMessage(Handler.java:92) at android.os.Looper.loop(Looper.java:154) at android.app.ActivityThread.main(ActivityThread.java:4977) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) at dalvik.system.NativeStart.main(Native Method) </code></pre> <p>Any idea why I am experiencing this weird behavior, any help is appreciated. </p> <p>As per @Jen suggestion , I tried b.performClick(); , and application shows normal behavior but still same behavior in onClickListener .</p> <p>I filed bug here is link <a href="http://code.google.com/p/android/issues/detail?id=35517&amp;colspec=ID%20Type%20Status%20Owner%20Summary%20Stars" rel="nofollow">http://code.google.com/p/android/issues/detail?id=35517&amp;colspec=ID%20Type%20Status%20Owner%20Summary%20Stars</a></p>
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    1. CODoes it react the same if you call `performClick()` using code. ICS posts a `Runnable` that executes the click - letting the UI state update before running the click code - that could very well be an effect of that.
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    2. CO@Jens onPerform Click it crashes properly
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    3. COThen its the fact that it's posting `Runnable`s to the `View`s `Handler` that's causing the change in behavior. Funky..
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