菜鸟的安卓实习之路---在使用popupWindow 的时候放置窗体泄露android.view.WindowManager$BadTokenException: Unable to add wind

本文详细介绍了在Android开发过程中遇到popupWindow出现窗口令牌异常时的解决方法,通过判断Activity状态来避免该问题。具体实现方式为在每次调用popupWindow时加入条件判断语句,确保在非结束状态下展示窗口。

在使用popupWIndow 的时候,有时候会出现


android.view.WindowManager$BadTokenException: Unable to add window — token null

这样的错误。

解决方法: 在每次调用的时候,都判断当前Actiivity 当前的状态 ,因为popupWindow 是必须要依附在一个Actiivty上面存在的

  if (!isFinishing()) {
                            helpPop.showAtLocation(menuView.findViewById(R.id.pop_lay),
                                Gravity.CENTER, 0, 0);
                        }

08-04 10:45:35.399 1000 2483 2483 E AndroidRuntime: FATAL EXCEPTION: main 08-04 10:45:35.399 1000 2483 2483 E AndroidRuntime: Process: com.android.provision, PID: 2483 08-04 10:45:35.399 1000 2483 2483 E AndroidRuntime: android.view.WindowManager$BadTokenException: Unable to add window -- token null is not valid; is your activity running? 08-04 10:45:35.399 1000 2483 2483 E AndroidRuntime: at android.view.ViewRootImpl.setView(ViewRootImpl.java:2101) 08-04 10:45:35.399 1000 2483 2483 E AndroidRuntime: at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:546) 08-04 10:45:35.399 1000 2483 2483 E AndroidRuntime: at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:402) 08-04 10:45:35.399 1000 2483 2483 E AndroidRuntime: at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177) 08-04 10:45:35.399 1000 2483 2483 E AndroidRuntime: at android.app.Dialog.show(Dialog.java:366) 08-04 10:45:35.399 1000 2483 2483 E AndroidRuntime: at android.app.AlertDialog$Builder.show(AlertDialog.java:1131) 08-04 10:45:35.399 1000 2483 2483 E AndroidRuntime: at android.widget.VideoView$5.onError(VideoView.java:615) 08-04 10:45:35.399 1000 2483 2483 E AndroidRuntime: at android.media.MediaPlayer$EventHandler.handleMessage(MediaPlayer.java:3640) 08-04 10:45:35.399 1000 2483 2483 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:107) 08-04 10:45:35.399 1000 2483 2483 E AndroidRuntime: at android.os.Looper.loopOnce(Looper.java:249) 08-04 10:45:35.399 1000 2483 2483 E AndroidRuntime: at android.os.Looper.loop(Looper.java:337) 08-04 10:45:35.399 1000 2483 2483 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:9562) 08-04 10:45:35.399 1000 2483 2483 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method) 08-04 10:45:35.399 1000 2483 2483 E AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:648) 08-04 10:45:35.399 1000 2483 2483 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1005) 08-04 10:45:35.402 1000 2483 2483 D OOMEventManagerFK: checkEventAndDumpForJE: 0
08-05
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