java.lang.IllegalArgumentException: View=com.android.internal.policy.impl.PhoneWindow$DecorView{21f9ba68 V.E..... R.....ID 0,0-1136,402} not attached to window manager
at android.view.WindowManagerGlobal.findViewLocked(WindowManagerGlobal.java:402)
at android.view.WindowManagerGlobal.removeView(WindowManagerGlobal.java:328)
at android.view.WindowManagerImpl.removeViewImmediate(WindowManagerImpl.java:84)
at android.app.Dialog.dismissDialog(Dialog.java:433)
at android.app.Dialog.dismiss(Dialog.java:416)
at ys.a(ConfirmationDialog.java:82)
at ys.a(ConfirmationDialog.java:76)
at **com.smarttech.kapp.SnapshotActivity.onOptionsItemSelected(SnapshotActivity.java:147)**
at android.app.Activity.onMenuItemSelected(Activity.java:3036)
at android.support.v4.app.FragmentActivity.onMenuItemSelected(FragmentActivity.java:373)
at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected(PhoneWindow.java:1222)
at com.android.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:761)
at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:155)
at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:904)
at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:894)
at android.widget.ActionMenuView.invokeItem(ActionMenuView.java:611)
at com.android.internal.view.menu.ActionMenuItemView.onClick(ActionMenuItemView.java:197)
at android.view.View.performClick(View.java:5217)
at android.view.View.onKeyUp(View.java:9663)
at android.widget.TextView.onKeyUp(TextView.java:7047)
at android.view.KeyEvent.dispatch(KeyEvent.java:3171)
at android.view.View.dispatchKeyEvent(View.java:8876)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1695)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1695)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1695)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1695)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1695)
at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchKeyEvent(PhoneWindow.java:2671)
at com.android.internal.policy.impl.PhoneWindow.superDispatchKeyEvent(PhoneWindow.java:1787)
at android.app.Activity.dispatchKeyEvent(Activity.java:2837)
at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:2549)
at android.view.ViewRootImpl$ViewPostImeInputStage.processKeyEvent(ViewRootImpl.java:4661)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:4616)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4174)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4227)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4193)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:4303)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4201)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:4360)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4174)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4227)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4193)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:4201)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:4174)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:4227)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:4193)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:4336)
at android.view.ViewRootImpl$ImeInputStage.onFinishedInputEvent(ViewRootImpl.java:4500)
at android.view.inputmethod.InputMethodManager$PendingEvent.run(InputMethodManager.java:2607)
at android.view.inputmethod.InputMethodManager.invokeFinishedInputEventCallback(InputMethodManager.java:2201)
at android.view.inputmethod.InputMethodManager.finishedInputEvent(InputMethodManager.java:2192)
at android.view.inputmethod.InputMethodManager$ImeInputEventSender.onInputEventFinished(InputMethodManager.java:2584)
at android.view.InputEventSender.dispatchInputEventFinished(InputEventSender.java:141)
at android.os.MessageQueue.nativePollOnce(Native Method)
at android.os.MessageQueue.next(MessageQueue.java:143)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:6117)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)

这是在快照活动中显示对话框的遗憾代码：

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        case android.R.id.home:
            finish();
            return true;
        case R.id.snapshot_delete:
            Log.d(TAG,"delete snapshot");
            **delete();**
            return true;
        case R.id.snapshot_share:
            export();
            return true;
    }

    return super.onOptionsItemSelected(item);
}

private void delete() {
    Log.d(TAG,"Delete snapshot");
    final int index = pager.getCurrentItem();
    ConfirmationDialog.prompt(this,R.string.delete_snapshot,R.string.delete_snapshot_confirmation,R.string.delete,android.R.string.cancel,new Runnable() {
        @Override
        public void run() {
            snapshots.get(index).delete();
            loadSnapshots();
        }
    });
}

这个崩溃很难复制,这是我所有的信息.
这个例外的原因是什么？
怎么可以修复？
我认为原因是在线对话,但我不确定

public static void prompt(final Context context,int titleResourceId,int questionResourceId,int positiveButton,int negativeButton,final Runnable confirmedRunnable,final Runnable cancelledRunnable) {
    closeDialog();
    DialogInterface.OnClickListener confirmed = new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog,int whichButton) {
            currentDialog = null;
            confirmedRunnable.run();
        }
    };
    DialogInterface.OnClickListener cancelled = new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog,int whichButton) {
            currentDialog = null;
            if (cancelledRunnable != null) {
                cancelledRunnable.run();
            }
        };
    };
    currentDialog = new AlertDialog.Builder(context).setTitle(titleResourceId).setMessage(questionResourceId).setIcon(android.R.drawable.ic_dialog_alert).setPositiveButton(positiveButton,confirmed)
            .setNegativeButton(negativeButton,cancelled).show();
    currentDialog.setCancelable(cancelled == null);
    currentDialog.setCanceledOnTouchOutside(cancelled == null);
}

这是promt实现