Back without destroying an activity

Asked Dec 09 '14 at 02:19

Active Dec 09 '14 at 16:20

Viewed 112 times

I have A and B activities. A is singleTop on launch, B is excludeFromRecents. When I back from B to A, B is always destroying. How to prevent it? When I press Home then B is just stopped and not destoying. Thanks.

Following back code if B activity:

    Intent intent = new Intent(this, ActivityPlaylist.class);
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
    startActivity(intent);

Without flags back not working at all.

I also have prevention of creating new instance in onCreate of A reason of I launch app from Eclipse (bug):

    if (!isTaskRoot()) {
        // Android launched another instance of the root activity into an existing task
        //  so just quietly finish and go away, dropping the user back into the activity
        //  at the top of the stack (ie: the last state of this task)
        finish();
        return;
    }

Upd: my case is I need do not lose B condition, including list position and so on.

edited May 23 '17 at 12:05

Community

asked Dec 09 '14 at 02:19

Konstantin Konopko

5,229
4
36
62

Just to check, can you achieve what you want to do by saving relevant data and then reopening it when the activity is called again. Just a quick suggestion... – AeroVTP Dec 09 '14 at 02:26
Can you explain your use case? I'm not aware of a way to accomplish this specifically. – csmurphy84 Dec 09 '14 at 02:31
@csmurphy84 I need play some animation when I back to B. Of course I can save and restore activity data, but just not destroying it is a simpler way to do that guess. Besides B not destroying by Home pressed. – Konstantin Konopko Dec 09 '14 at 02:36
Setting B as `singleTop` takes no effect – Konstantin Konopko Dec 09 '14 at 02:40
You have to override onBackPressed() – Ebin James Dec 09 '14 at 04:25
The first snippet placed in `onBackPressed` – Konstantin Konopko Dec 09 '14 at 11:44

Back without destroying an activity

0 Answers0