关于android.view.WindowLeaked的解决方案

虽然是小问题一个，但也困扰了我一段时间，现在记下来，给自己做个备忘，也可以给其他人一个参考

1.01-08 01:49:27.874: ERROR/WindowManager(473): Activity com.photos.MainActivity has leaked window android.widget.ImageButton@43e40d10 that was originally added here
2.01-08 01:49:27.874: ERROR/WindowManager(473): android.view.WindowLeaked: Activity com.photos.MainActivity has leaked window android.widget.ImageButton@43e40d10 that was originally added here
3.01-08 01:49:27.874: ERROR/WindowManager(473): at android.view.ViewRoot.<init>(ViewRoot.java:247)
4.01-08 01:49:27.874: ERROR/WindowManager(473): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:148)
5.01-08 01:49:27.874: ERROR/WindowManager(473): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
6.01-08 01:49:27.874: ERROR/WindowManager(473): at android.view.Window$LocalWindowManager.addView(Window.java:424)
7.01-08 01:49:27.874: ERROR/WindowManager(473): at android.widget.PopupWindow.invokePopup(PopupWindow.java:828)
8.01-08 01:49:27.874: ERROR/WindowManager(473): at android.widget.PopupWindow.showAtLocation(PopupWindow.java:688)
9.01-08 01:49:27.874: ERROR/WindowManager(473): at com.photos.MainActivity.showCommonPopup(MainActivity.java:256)
10.01-08 01:49:27.874: ERROR/WindowManager(473): at com.photos.MainActivity.access$3(MainActivity.java:255)
11.01-08 01:49:27.874: ERROR/WindowManager(473): at com.photos.MainActivity$2.handleMessage(MainActivity.java:88)
12.01-08 01:49:27.874: ERROR/WindowManager(473): at android.os.Handler.dispatchMessage(Handler.java:99)
13.01-08 01:49:27.874: ERROR/WindowManager(473): at android.os.Looper.loop(Looper.java:123)
14.01-08 01:49:27.874: ERROR/WindowManager(473): at android.app.ActivityThread.main(ActivityThread.java:4627)
15.01-08 01:49:27.874: ERROR/WindowManager(473): at java.lang.reflect.Method.invokeNative(Native Method)
16.01-08 01:49:27.874: ERROR/WindowManager(473): at java.lang.reflect.Method.invoke(Method.java:521)
17.01-08 01:49:27.874: ERROR/WindowManager(473): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
18.01-08 01:49:27.874: ERROR/WindowManager(473): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
19.01-08 01:49:27.874: ERROR/WindowManager(473): at dalvik.system.NativeStart.main(Native Method)

按字面了解，Window Leaked大概就是说一个窗体泄漏了，也就是我们常说的内存泄漏，为什么窗体会泄漏呢？

产生原因：
我们知道Android的每一个Activity都有个WindowManager窗体管理器，同样，构建在某个Activity之上的对话框、PopupWindow也有相应的WindowManager窗体管理器。因为对话框、PopupWindown不能脱离Activity而单独存在着，所以当某个Dialog或者某个PopupWindow正在显示的时候我们去finish()了承载该Dialog(或PopupWindow)的Activity时，就会抛Window Leaked异常了，因为这个Dialog(或PopupWindow)的WindowManager已经没有谁可以附属了，所以它的窗体管理器已经泄漏了。

解决方法：
关闭(finish)某个Activity前，要确保附属在上面的Dialog或PopupWindow已经关闭(dismiss)了。

转载于:https://blog.51cto.com/whatandroid/1134349

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