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Android：NullPointer之後試圖做一個意圖後onTab on ItemizedOverly

2012-10-22 39 views
2

我有一個TabHostActivity中的MapsActivity，我在地圖上放置了一個自定義的ItemizedOverlay來顯示自定義的OverlayItems。Android：NullPointer之後試圖做一個意圖後onTab on ItemizedOverly

以我ItemizedOverlay類的onTab方法如下所示

@Override 
protected boolean onTap(int index) { 
    listener.onPoiTap(this.poiList.get(index)); 
    return true; 
}

其中聽者變量是一個自定義onTabListener其在地圖活動實現的：後

@Override 
public void onPoiTap(PointOfInterest poi) { 
    Intent intent = new Intent(); 
    intent.setClass(getParent(), PointOfInterestActivity.class); 

    ActivityStack activityStack = (ActivityStack) this.getParent(); 
    activityStack.push(new Date().getTime() + "", intent); 
    // Toast.makeText(this, "Title: " + poi.getTitle(), Toast.LENGTH_SHORT).show(); 
}

的吐司評論的作品，並顯示正確的標題，但意圖的呼叫使應用程序崩潰，並顯示日誌沒有任何引用我的代碼：

I/InputReader(2284): Touch event's action is 0x0 (deviceType=0) [pCnt=1, s=0.749 ] 
I/InputDispatcher(2284): Delivering touch to current input target: action: 0x0 
I/InputDispatcher(2284): Delivering touch to current input target: action: 0x0 
I/InputDispatcher(2284): Delivering touch to current input target: action: 0x0 
I/InputReader(2284): Touch event's action is 0x1 (deviceType=0) [pCnt=1, s=] 
I/InputDispatcher(2284): Delivering touch to current input target: action: 0x1 
I/InputDispatcher(2284): Delivering touch to current input target: action: 0x1 
I/InputDispatcher(2284): Delivering touch to current input target: action: 0x1 
E/InputEventReceiver(22509): Exception dispatching input event. 
E/MessageQueue-JNI(22509): Exception in MessageQueue callback: handleReceiveCallback 
E/MessageQueue-JNI(22509): java.lang.NullPointerException 
E/MessageQueue-JNI(22509): at com.google.android.maps.GestureDetector.onTouchEvent(GestureDetector.java:548) 
E/MessageQueue-JNI(22509): at com.google.android.maps.MapView.onTouchEvent(MapView.java:683) 
E/MessageQueue-JNI(22509): at android.view.View.dispatchTouchEvent(View.java:7337) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2410) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2145) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/MessageQueue-JNI(22509): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2109) 
E/MessageQueue-JNI(22509): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1462) 
E/MessageQueue-JNI(22509): at android.app.Activity.dispatchTouchEvent(Activity.java:2472) 
E/MessageQueue-JNI(22509): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2057) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/MessageQueue-JNI(22509): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2109) 
E/MessageQueue-JNI(22509): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1462) 
E/MessageQueue-JNI(22509): at android.app.Activity.dispatchTouchEvent(Activity.java:2472) 
E/MessageQueue-JNI(22509): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2057) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/MessageQueue-JNI(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/MessageQueue-JNI(22509): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2109) 
E/MessageQueue-JNI(22509): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1462) 
E/MessageQueue-JNI(22509): at android.app.Activity.dispatchTouchEvent(Activity.java:2472) 
E/MessageQueue-JNI(22509): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2057) 
E/MessageQueue-JNI(22509): at android.view.View.dispatchPointerEvent(View.java:7520) 
E/MessageQueue-JNI(22509): at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3374) 
E/MessageQueue-JNI(22509): at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:3306) 
E/MessageQueue-JNI(22509): at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:4400) 
E/MessageQueue-JNI(22509): at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:4378) 
E/MessageQueue-JNI(22509): at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:4482) 
E/MessageQueue-JNI(22509): at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:171) 
E/MessageQueue-JNI(22509): at android.os.MessageQueue.nativePollOnce(Native Method) 
E/MessageQueue-JNI(22509): at android.os.MessageQueue.next(MessageQueue.java:125) 
E/MessageQueue-JNI(22509): at android.os.Looper.loop(Looper.java:124) 
E/MessageQueue-JNI(22509): a 
D/AndroidRuntime(22509): Shutting down VM 
W/dalvikvm(22509): threadid=1: thread exiting with uncaught exception (group=0x410662a0) 
E/AndroidRuntime(22509): FATAL EXCEPTION: main 
E/AndroidRuntime(22509): java.lang.NullPointerException 
E/AndroidRuntime(22509): at com.google.android.maps.GestureDetector.onTouchEvent(GestureDetector.java:548) 
E/AndroidRuntime(22509): at com.google.android.maps.MapView.onTouchEvent(MapView.java:683) 
E/AndroidRuntime(22509): at android.view.View.dispatchTouchEvent(View.java:7337) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2410) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2145) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/AndroidRuntime(22509): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2109) 
E/AndroidRuntime(22509): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1462) 
E/AndroidRuntime(22509): at android.app.Activity.dispatchTouchEvent(Activity.java:2472) 
E/AndroidRuntime(22509): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2057) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/AndroidRuntime(22509): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2109) 
E/AndroidRuntime(22509): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1462) 
E/AndroidRuntime(22509): at android.app.Activity.dispatchTouchEvent(Activity.java:2472) 
E/AndroidRuntime(22509): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2057) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2416) 
E/AndroidRuntime(22509): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2159) 
E/AndroidRuntime(22509): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2109) 
E/AndroidRuntime(22509): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1462) 
E/AndroidRuntime(22509): at android.app.Activity.dispatchTouchEvent(Activity.java:2472) 
E/AndroidRuntime(22509): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2057) 
E/AndroidRuntime(22509): at android.view.View.dispatchPointerEvent(View.java:7520) 
E/AndroidRuntime(22509): at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3374) 
E/AndroidRuntime(22509): at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:3306) 
E/AndroidRuntime(22509): at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:4400) 
E/AndroidRuntime(22509): at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:4378) 
E/AndroidRuntime(22509): at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:4482) 
E/AndroidRuntime(22509): at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:171) 
E/AndroidRuntime(22509): at android.os.MessageQueue.nativePollOnce(Native Method) 
E/AndroidRuntime(22509): at android.os.MessageQueue.next(MessageQueue.java:125) 
E/AndroidRuntime(22509): at android.os.Looper.loop 
D/dalvikvm(22509): GC_CONCURRENT freed 1205K, 21% free 22090K/27719K, paused 5ms+4ms, total 51ms 
D/dalvikvm(2284): GC_FOR_ALLOC freed 2199K, 46% free 32415K/59399K, paused 119ms, total 119ms 
E/Watchdog(2284): [email protected] 388

任何想法我的代碼有什麼問題？ 謝謝

來源

2012-10-22 Elias

+0

我猜ActivityStack activityStack爲null，你應該看看這個視頻關於如何從eclipse調試android應用程序：http：//www.youtube.com/watch？v = jqHYbm9e05A – petey

+0

不，我已經檢查過。並感謝視頻，但我很清楚調試... – Elias

回答

0

你把PointsOfInterestActivity放在你的AndroidManifest.xml文件中嗎？如果你不輸入，應用程序將崩潰...請參閱this。

來源

2012-10-22 22:09:02 crocboy

+0

是的，它是在清單文件！ – Elias

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