NullPointerException(@PhoneWindow:onKeyUpPanel:1002){main}

Question

我最近在分析中遇到了奇怪的异常.

java.lang.NullPointerException
at com.android.internal.policy.impl.PhoneWindow.onKeyUpPanel(PhoneWindow.java:1002)
at com.android.internal.policy.impl.PhoneWindow.onKeyUp(PhoneWindow.java:1703)
at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:2114)
at android.view.ViewRootImpl.deliverKeyEventPostIme(ViewRootImpl.java:3626)
at android.view.ViewRootImpl.handleImeFinishedEvent(ViewRootImpl.java:3596)
at android.view.ViewRootImpl$ViewRootHandler.handleMessage(ViewRootImpl.java:2839)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4904)
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:790)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
at dalvik.system.NativeStart.main(Native Method)

我错过了我可以采取的措施来防止这种情况.

Answer 1

在LG修复此问题(可能需要几个月,取决于他们发布新固件所需的时间)之前,以下解决方法对我有用.只需将以下代码添加到您的Activity类:

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
   if (keyCode == KeyEvent.KEYCODE_MENU && "LGE".equalsIgnoreCase(Build.BRAND)) {
       return true;
   }
   return super.onKeyDown(keyCode, event);
}

@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
   if (keyCode == KeyEvent.KEYCODE_MENU && "LGE".equalsIgnoreCase(Build.BRAND)) {
       openOptionsMenu();
       return true;
   }
   return super.onKeyUp(keyCode, event);
}

Answer 2

看起来像LG设备支持库中的错误https://code.google.com/p/android/issues/detail?id=78154