HY.我试图创建一个警告对话框,但是当我运行我的应用程序时,会抛出异常
09-26 12:43:21.949: E/AndroidRuntime(14618): FATAL EXCEPTION: main
09-26 12:43:21.949: E/AndroidRuntime(14618): android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application
09-26 12:43:21.949: E/AndroidRuntime(14618): at android.view.ViewRootImpl.setView(ViewRootImpl.java:687)
09-26 12:43:21.949: E/AndroidRuntime(14618): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:301)
09-26 12:43:21.949: E/AndroidRuntime(14618): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:215)
09-26 12:43:21.949: E/AndroidRuntime(14618): at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:140)
09-26 12:43:21.949: E/AndroidRuntime(14618): at android.app.Dialog.show(Dialog.java:278)
09-26 12:43:21.949: E/AndroidRuntime(14618): at com.example.stampp.UI.Rewards.DeleteRewardsFragment$1.onItemClick(DeleteRewardsFragment.java:80)
09-26 12:43:21.949: E/AndroidRuntime(14618): at android.widget.AdapterView.performItemClick(AdapterView.java:292)
09-26 12:43:21.949: E/AndroidRuntime(14618): at android.widget.AbsListView.performItemClick(AbsListView.java:1394)
09-26 12:43:21.949: E/AndroidRuntime(14618): at android.widget.AbsListView$PerformClick.run(AbsListView.java:3024)
09-26 12:43:21.949: E/AndroidRuntime(14618): at android.widget.AbsListView.onTouchEvent(AbsListView.java:3846)
09-26 12:43:21.949: E/AndroidRuntime(14618): at android.view.View.dispatchTouchEvent(View.java:5629)
09-26 12:43:21.949: …