android - PendingIntent 取消打开的 Activity

Question

我有两个 Activity ， Activity 1 是一个 ListView ，当您单击其中一个项目时，它会打开 Activity 2。当 Activity 1 不 Activity 时，我通过使用动态广播使用通知receiver，因此当 Activity 1 未激活且 Activity 2 激活时，用户将收到通知。现在我的问题是当用户在 Activity 2 上并且他收到通知并点击它时，将打开一个新的 Activity 1，我真正需要的是关闭 Activity 2 并打开 Activity 1，你能告诉我怎么做吗我这样做？

private void prepNotification(Context context, String msg) {

    Resources r = context.getResources();
    PendingIntent pi = PendingIntent.getActivity(context, 0, new Intent(context,
            TestNotification.class),  
       PendingIntent.FLAG_UPDATE_CURRENT/*I tried many other options none of which seems to work */);

    Notification notification = new NotificationCompat.Builder(context)
            .setTicker("New Notif").setSmallIcon(R.drawable.ic_launcher)
            .setContentTitle("New Notif").setContentText(msg)
            .setContentIntent(pi).setAutoCancel(true).build();

    showBackgroundNotification(context, 0, notification);

}

private void showBackgroundNotification(Context context, int requestCode, Notification notification) {
    Intent i = new Intent(ACTION_SHOW_NOTIFICATION);
    i.putExtra("REQUEST_CODE", requestCode);
    i.putExtra("NOTIFICATION", notification);

    context.sendOrderedBroadcast(i, PERM_PRIVATE, null, null, Activity.RESULT_OK,
            null, null);
}

编辑 1

这两个 Activity 都是托管 fragment ，但不确定这是否重要。

Answer 1

Add this intent flag.



 Intent a = new Intent(context,
                TestNotification.class);
            a.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
     a.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
     a.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);

PendingIntent pi = PendingIntent.getActivity(context, 0, a),