Android問題集錦之二十 · Android問題集錦

## Activity has leaked window that was originally added 今天調試程序時log中突然打印這樣的錯誤，但是程序并沒有crash，為了不放過一個錯誤，我決定調查一下。當時是離開一個activity，然后提示是否退出此界面，接下來就打印此錯誤： ~~~ 1. 03-08?18:02:48.521:?E/WindowManager(6340):?Activity?com.linc.megatron.activity.ExamActivity?has?leaked?window?com.android.internal.policy.impl.PhoneWindow$DecorView@40568ea8?that?was?originally?added?here?? 2. 03-08?18:02:48.521:?E/WindowManager(6340):?android.view.WindowLeaked:?Activity?com.linc.megatron.activity.ExamActivity?has?leaked?window?com.android.internal.policy.impl.PhoneWindow$DecorView@40568ea8?that?was?originally?added?here?? 3. 03-08?18:02:48.521:?E/WindowManager(6340):??at?android.view.ViewRoot.(ViewRoot.java:264)?? 4. 03-08?18:02:48.521:?E/WindowManager(6340):??at?android.view.WindowManagerImpl.addView(WindowManagerImpl.java:148)?? 5. 03-08?18:02:48.521:?E/WindowManager(6340):??at?android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)?? 6. 03-08?18:02:48.521:?E/WindowManager(6340):??at?android.view.Window$LocalWindowManager.addView(Window.java:424)?? 7. 03-08?18:02:48.521:?E/WindowManager(6340):??at?android.app.Dialog.show(Dialog.java:241)?? 8. 03-08?18:02:48.521:?E/WindowManager(6340):??at?com.linc.megatron.base.BackKeyActivity.showDialog(BackKeyActivity.java:76)?? 9. 03-08?18:02:48.521:?E/WindowManager(6340):??at?com.linc.megatron.base.BackKeyActivity.onKeyDown(BackKeyActivity.java:62)?? 10. 03-08?18:02:48.521:?E/WindowManager(6340):??at?android.view.KeyEvent.dispatch(KeyEvent.java:1256)?? 11. 03-08?18:02:48.521:?E/WindowManager(6340):??at?android.app.Activity.dispatchKeyEvent(Activity.java:2078)?? 12. 03-08?18:02:48.521:?E/WindowManager(6340):??at?com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:1709)?? 13. 03-08?18:02:48.521:?E/WindowManager(6340):??at?android.view.ViewRoot.deliverKeyEventToViewHierarchy(ViewRoot.java:2628)?? 14. 03-08?18:02:48.521:?E/WindowManager(6340):??at?android.view.ViewRoot.handleFinishedEvent(ViewRoot.java:2603)?? 15. 03-08?18:02:48.521:?E/WindowManager(6340):??at?android.view.ViewRoot.handleMessage(ViewRoot.java:1875)?? 16. 03-08?18:02:48.521:?E/WindowManager(6340):??at?android.os.Handler.dispatchMessage(Handler.java:99)?? 17. 03-08?18:02:48.521:?E/WindowManager(6340):??at?android.os.Looper.loop(Looper.java:123)?? 18. 03-08?18:02:48.521:?E/WindowManager(6340):??at?android.app.ActivityThread.main(ActivityThread.java:3687)?? 19. 03-08?18:02:48.521:?E/WindowManager(6340):??at?java.lang.reflect.Method.invokeNative(Native?Method)?? 20. 03-08?18:02:48.521:?E/WindowManager(6340):??at?java.lang.reflect.Method.invoke(Method.java:507)?? 21. 03-08?18:02:48.521:?E/WindowManager(6340):??at?com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)?? 22. 03-08?18:02:48.521:?E/WindowManager(6340):??at?com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)?? 23. 03-08?18:02:48.521:?E/WindowManager(6340):??at?dalvik.system.NativeStart.main(Native?Method)?? ~~~ 顯然，我用Dialog確認是否退出，但是activity銷毀后并沒有處理Dialog的退出。解決辦法：知道了問題所在就容易解決問題了。只需要在activity銷毀時關閉Dialog就好。 ~~~ @Override?? protected?void?onDestroy()?{?? ????if(mDialog?!=?null)?{?? ????????mDialog.dismiss();?? ????}?? ????super.onDestroy();?? }?? ~~~