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
- view?plaincopy?to?clipboardprint???
- 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????
- 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????
- 01-08?01:49:27.874:?ERROR/WindowManager(473):?????at?android.view.ViewRoot.<init>(ViewRoot.java:247)????
- 01-08?01:49:27.874:?ERROR/WindowManager(473):?????at?android.view.WindowManagerImpl.addView(WindowManagerImpl.java:148)????
- 01-08?01:49:27.874:?ERROR/WindowManager(473):?????at?android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)????
- 01-08?01:49:27.874:?ERROR/WindowManager(473):?????at?android.view.Window$LocalWindowManager.addView(Window.java:424)????
- 01-08?01:49:27.874:?ERROR/WindowManager(473):?????at?android.widget.PopupWindow.invokePopup(PopupWindow.java:828)????
- 01-08?01:49:27.874:?ERROR/WindowManager(473):?????at?android.widget.PopupWindow.showAtLocation(PopupWindow.java:688)????
- 01-08?01:49:27.874:?ERROR/WindowManager(473):?????at?com.photos.MainActivity.showCommonPopup(MainActivity.java:256)????
- 01-08?01:49:27.874:?ERROR/WindowManager(473):?????at?com.photos.MainActivity.access$3(MainActivity.java:255)????
- 01-08?01:49:27.874:?ERROR/WindowManager(473):?????at?com.photos.MainActivity$2.handleMessage(MainActivity.java:88)????
- 01-08?01:49:27.874:?ERROR/WindowManager(473):?????at?android.os.Handler.dispatchMessage(Handler.java:99)????
- 01-08?01:49:27.874:?ERROR/WindowManager(473):?????at?android.os.Looper.loop(Looper.java:123)????
- 01-08?01:49:27.874:?ERROR/WindowManager(473):?????at?android.app.ActivityThread.main(ActivityThread.java:4627)????
- 01-08?01:49:27.874:?ERROR/WindowManager(473):?????at?java.lang.reflect.Method.invokeNative(Native?Method)????
- 01-08?01:49:27.874:?ERROR/WindowManager(473):?????at?java.lang.reflect.Method.invoke(Method.java:521)????
- 01-08?01:49:27.874:?ERROR/WindowManager(473):?????at?com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)????
- 01-08?01:49:27.874:?ERROR/WindowManager(473):?????at?com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)????
- 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。
android.view.WindowLeaked一般会发生在Activity 与Dialog的显示。
?????? Activity 中create 一个Dialog,若你先关闭Dialog再关闭Activity就是正常的,若你先关闭Activity再关闭Dialog就会报错这个android.view.WindowLeaked错误了。
?????? 分析这个原因是:Dialog是基于Activity而创建的:new ProgressDialog(this);this 就是Activity。 Activtity先finish,那Dialog就没得依附了,所以就会报android.view.WindowLeaked。
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。
?? 也可在OnCreateDialog()中创建Dialog,让系统去管理对话框