如题如何实现啊,我现在加上了,但就是提示:
10-28 23:17:09.543: ERROR/AndroidRuntime(3107): FATAL EXCEPTION: main
10-28 23:17:09.543: ERROR/AndroidRuntime(3107): android.view.WindowManager$BadTokenException: Unable to add window -- token android.app.LocalActivityManager$LocalActivityRecord@405aeb00 is not valid; is your activity running?
10-28 23:17:09.543: ERROR/AndroidRuntime(3107): at android.view.ViewRoot.setView(ViewRoot.java:557)
10-28 23:17:09.543: ERROR/AndroidRuntime(3107): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177)
10-28 23:17:09.543: ERROR/AndroidRuntime(3107): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
10-28 23:17:09.543: ERROR/AndroidRuntime(3107): at android.view.Window$LocalWindowManager.addView(Window.java:433)
10-28 23:17:09.543: ERROR/AndroidRuntime(3107): at android.app.Dialog.show(Dialog.java:288)
10-28 23:17:09.543: ERROR/AndroidRuntime(3107): FATAL EXCEPTION: main
10-28 23:17:09.543: ERROR/AndroidRuntime(3107): android.view.WindowManager$BadTokenException: Unable to add window -- token android.app.LocalActivityManager$LocalActivityRecord@405aeb00 is not valid; is your activity running?
10-28 23:17:09.543: ERROR/AndroidRuntime(3107): at android.view.ViewRoot.setView(ViewRoot.java:557)
10-28 23:17:09.543: ERROR/AndroidRuntime(3107): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177)
10-28 23:17:09.543: ERROR/AndroidRuntime(3107): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
10-28 23:17:09.543: ERROR/AndroidRuntime(3107): at android.view.Window$LocalWindowManager.addView(Window.java:433)
10-28 23:17:09.543: ERROR/AndroidRuntime(3107): at android.app.Dialog.show(Dialog.java:288)
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new AlertDialog(这里出问题这里是你的activity.this).build....