08-14 17:23:31.078: E/AndroidRuntime(25099): FATAL EXCEPTION: main
08-14 17:23:31.078: E/AndroidRuntime(25099): java.lang.IllegalArgumentException: View not attached to window manager
08-14 17:23:31.078: E/AndroidRuntime(25099): at android.view.WindowManagerImpl.findViewLocked(WindowManagerImpl.java:378)
08-14 17:23:31.078: E/AndroidRuntime(25099): at android.view.WindowManagerImpl.removeView(WindowManagerImpl.java:223)
08-14 17:23:31.078: E/AndroidRuntime(25099): at android.view.Window$LocalWindowManager.removeView(Window.java:432)
08-14 17:23:31.078: E/AndroidRuntime(25099): at android.app.Dialog.dismissDialog(Dialog.java:278)
08-14 17:23:31.078: E/AndroidRuntime(25099): at android.app.Dialog.access$000(Dialog.java:71)
08-14 17:23:31.078: E/AndroidRuntime(25099): at android.app.Dialog$1.run(Dialog.java:111)
08-14 17:23:31.078: E/AndroidRuntime(25099): at android.app.Dialog.dismiss(Dialog.java:268)
08-14 17:23:31.078: E/AndroidRuntime(25099): at android.app.Dialog.cancel(Dialog.java:951)
上記は、進行状況ダイアログが表示されているときに画面を回転させたときに得られるものです。どうすればこの問題を処理できますか...