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PO"Window Manager Crash" on dispatching 'Down' key on Samsung Galaxy S
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2012-02-01T07:18:14.197
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2012-02-09T11:58:44.827
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Body
 I am running my Unit tests on various android devices using <a href="http://developer.android.com/reference/android/app/Instrumentation.html" rel="nofollow">Instrumentation</a> . Testcases works fine on emulator & all devices except Samsung Galaxy S. On Samsung Galaxy S it displays a Window Manager crash after injecting some 30 key events using instrumentation here is the complete crash log: <pre><code>D/dalvikvm(11862): GC_EXPLICIT freed 6800 objects / 374040 bytes in 54ms D/dalvikvm(11862): GC_EXPLICIT freed 780 objects / 71856 bytes in 39ms W/dalvikvm(11862): threadid=9: thread exiting with uncaught exception (group=0x4001d7d0) E/WindowManager( 2472): Window Manager Crash E/WindowManager( 2472): java.lang.NullPointerException E/WindowManager( 2472): at com.android.server.WindowManagerService$KeyWaiter.waitForNextEventTarget(WindowManagerService.java:5844) E/WindowManager( 2472): at com.android.server.WindowManagerService.injectKeyEvent(WindowManagerService.java:5565) E/WindowManager( 2472): at android.view.IWindowManager$Stub.onTransact(IWindowManager.java:110) E/WindowManager( 2472): at com.android.server.WindowManagerService.onTransact(WindowManagerService.java:692) E/WindowManager( 2472): at android.os.Binder.execTransact(Binder.java:288) E/WindowManager( 2472): at dalvik.system.NativeStart.run(Native Method) E/AndroidRuntime(11862): FATAL EXCEPTION: Instr: com.myapp.test.ImpInstrumentation E/AndroidRuntime(11862): java.lang.NullPointerException E/AndroidRuntime(11862): at android.os.Parcel.readException(Parcel.java:1266) E/AndroidRuntime(11862): at android.os.Parcel.readException(Parcel.java:1248) E/AndroidRuntime(11862): at android.view.IWindowManager$Stub$Proxy.injectKeyEvent(IWindowManager.java:830) E/AndroidRuntime(11862): at android.app.Instrumentation.sendKeySync(Instrumentation.java:859) E/AndroidRuntime(11862): at android.app.Instrumentation.sendKeyDownUpSync(Instrumentation.java:872) E/AndroidRuntime(11862): at com.myapp.test.util.ListUtil.arrowDownToPosition(ListUtil.java:69) </code></pre> And here is the piece of code where it generally crashes: <pre><code> private void arrowDownToPosition(int position) { int maxDowns = 50; while(mListView.getSelectedItemPosition() < position && --maxDowns > 0) { mInstrumentation.sendKeyDownUpSync(KeyEvent.KEYCODE_DPAD_DOWN); } //Crashes on below line dispatching enter key mInstrumentation.sendKeyDownUpSync(KeyEvent.KEYCODE_ENTER); } </code></pre> All solutions/suggestions are welcome.
Tags
<android><instrumentation><samsung-mobile><android-windowmanager>
Title
"Window Manager Crash" on dispatching 'Down' key on Samsung Galaxy S
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