Back button finishes parent activity

Question

I have some problems with the default Android lifecyle.

My app has an Activity (let's call it A) and a MapActivity (let's call it M)

Activity A has an AsyncTask to retrieve an image from an URL (EDIT3: which seems to not affect my issue, but I mention it in order to give full info) and the MapActivity M is currently an empty map, no config or modifications made.

My use case is the folowing:

I go through my app normally, and end up starting A with no errors. When I start M from A everything works as expected, but when I go back, Activity A is already finished.

I Log.d every step in the lifecycle in both activities and found the following:

Start Activity A

onCreate  - A
onStart   - A
onResume  - A

Start Activity M

onPause   - A
onCreate  - M
onStart   - M
onResume  - M
onStop    - A

Back on Activity M

onPause   - M
onDestroy - A
onStop    - M
onDestroy - M

So I end up finishing Activity A and M when I press the back button on M

I tried different kind of Activities (MapActivities, Activities, from the same package, from different packages) with the same exact result.

EDIT:

I don't use finish(); method anywhere
My activity is started with the folowing code:

Intent I = new Intent(context, ActivityName.class); context.startActivity(I);

EDIT2:

Checked isFinishing method on the Activity A onPause step, and the result is false so it was not suposed to be finishing

Any idea? is there something I am missing? Thx in advance for your time and ideas!

Nope I don't use either `finish();` nor flags. This information is now on the question post, thanks! — Eloi Navarro, Dec 27 '12 at 11:17
Are you overriding onBackPressed() method in your activities? — stack_ved, Dec 27 '12 at 11:45
Nope in any of them. That's why I'm so surprised this behaviour is happening... — Eloi Navarro, Dec 27 '12 at 11:56
Try to take out your AsyncTask and see if everything works :) — Tiago Almeida, Dec 27 '12 at 12:02
I tried, same results. I specified there was an `AsyncTask`in order to give full info, but apparently it doesn't affect my issue. — Eloi Navarro, Dec 27 '12 at 12:24
You might also check if activity `A` is not launched as a `singleInstance` (u can check it in your manifest), that shouldn't be this, but I guess it's still worth checking just in case ;) — Stigi, Dec 27 '12 at 13:19
Eureka! thx @Stigi it was not this exact property but your answer was totally on the right direction! — Eloi Navarro, Dec 27 '12 at 14:00

score 0 · Answer 1 · answered Dec 27 '12 at 10:29

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While going from Activity M to Activity A, make sure you don't use finish(); since it removes the current activity from the stack.

answered Dec 27 '12 at 10:29

Zeeshan

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score 0 · Accepted Answer · answered Dec 27 '12 at 14:03

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Thanks to @Stigi who pointed me in the right path to keep debugging. (Can I give you points somehow?)

In my case android:noHistory="true" was set on the Manifest.xml so when I came back from Activity M to Ait was not on the pile, and it looked like it was closed.

answered Dec 27 '12 at 14:03

Eloi Navarro

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hehe I guess there is no way to give me any points, but I'm still glad to help :) btw accept ur own answer, so others will see how to solve similar issue, cheers:) – Stigi Jan 04 '13 at 00:29

Back button finishes parent activity

2 Answers2