Question

Activity A started B using startActivityForResult, and B started C using startActivity. After that, the activity stack is A B C.

Now suppose, C makes startActivity call on B using FLAG_ACTIVITY_REORDER_TO_FRONT flag, then the activity stack will become A C B.

My question is, now, if B finishes itself, will onActivityResult() in A be called due to B’s exiting?

Thanks.

Answer 1

Judging by the documentation for finish():

Call this when your activity is done
and should be closed. The
ActivityResult is propagated back to
whoever launched you via
onActivityResult().

This leads me to believe that A will get B’s result even if C is in between the two.

Edit – after some testing I discovered some interesting interactions here.

The order of events, after some logging:

1. A started
2. B started
3. C started
4. B resumed (with FLAG_ACTIVITY_BRING_TO_FRONT)
5. B finished
6. C resumed (it was under B)
7. C finished
8. A resumes and gets B’s result

In other words, A gets B’s result as expected, but it happens after C finishes and A is resumed.