WindowManagerBadTokenException无法添加窗口

我有一个错误如下：

//TODO tryAgain private void tryAgain(){ new AlertDialog.Builder(this) .setTitle("Game Over") .setMessage("Times Up!") .setPositiveButton("Try Again?", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { dialog.cancel(); Intent retry = getIntent(); finish(); startActivity(retry); } }) .setNegativeButton("Back to Menu", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { dialog.cancel(); Intent i = new Intent(Stage1_3.this, ShapingColors.class); finish(); startActivity(i); } }) .show(); } 

基本上我想要做的是取消对话框然后重新启动我当前的活动，另一个我要回到菜单活动。 我在这里想念的是什么？ 任何帮助表示赞赏。

更新LOGCAT：

  04-27 00:42:44.680: E/AndroidRuntime(330): FATAL EXCEPTION: main 04-27 00:42:44.680: E/AndroidRuntime(330): android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@40515dc0 is not valid; is your activity running? 04-27 00:42:44.680: E/AndroidRuntime(330): at android.view.ViewRoot.setView(ViewRoot.java:527) 04-27 00:42:44.680: E/AndroidRuntime(330): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177) 04-27 00:42:44.680: E/AndroidRuntime(330): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91) 04-27 00:42:44.680: E/AndroidRuntime(330): at android.view.Window$LocalWindowManager.addView(Window.java:424) 04-27 00:42:44.680: E/AndroidRuntime(330): at android.app.Dialog.show(Dialog.java:241) 04-27 00:42:44.680: E/AndroidRuntime(330): at android.app.AlertDialog$Builder.show(AlertDialog.java:802) 04-27 00:42:44.680: E/AndroidRuntime(330): at com.say.shapingcolor.Stage1_3.tryAgain(Stage1_3.java:307) 04-27 00:42:44.680: E/AndroidRuntime(330): at com.say.shapingcolor.Stage1_3.access$0(Stage1_3.java:287) 04-27 00:42:44.680: E/AndroidRuntime(330): at com.say.shapingcolor.Stage1_3$MyCount.onFinish(Stage1_3.java:319) 04-27 00:42:44.680: E/AndroidRuntime(330): at android.os.CountDownTimer$1.handleMessage(CountDownTimer.java:118) 04-27 00:42:44.680: E/AndroidRuntime(330): at android.os.Handler.dispatchMessage(Handler.java:99) 04-27 00:42:44.680: E/AndroidRuntime(330): at android.os.Looper.loop(Looper.java:123) 04-27 00:42:44.680: E/AndroidRuntime(330): at android.app.ActivityThread.main(ActivityThread.java:3683) 04-27 00:42:44.680: E/AndroidRuntime(330): at java.lang.reflect.Method.invokeNative(Native Method) 04-27 00:42:44.680: E/AndroidRuntime(330): at java.lang.reflect.Method.invoke(Method.java:507) 04-27 00:42:44.680: E/AndroidRuntime(330): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 04-27 00:42:44.680: E/AndroidRuntime(330): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 04-27 00:42:44.680: E/AndroidRuntime(330): at dalvik.system.NativeStart.main(Native Method) 

Answer 1

当您显示不再存在的上下文的对话框时，可能会发生这种情况。 当您调用对话框的show()时，活动将被销毁。 这通常在异步操作之后发生。 确保您的活动（您要在其中显示对话框）正在运行。

完成后不要调用活动只需创建新意图并启动活动。 这样做：

 private void tryAgain(){ new AlertDialog.Builder(this) .setTitle("Game Over") .setMessage("Times Up!") .setPositiveButton("Try Again?", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { dialog.cancel(); Intent retry = new Intent(this, Stage1_3.class);//I guess Stage1_3 is the current activity finish(); startActivity(retry); } }) .setNegativeButton("Back to Menu", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { dialog.cancel(); Intent i = new Intent(Stage1_3.this, ShapingColors.class); finish(); startActivity(i); } }) .show(); }