android - Catch the end of Return Activity Transition -

from activity a b , set enter , return transitions. want put fadein animation after return transition ( b a after back).

originally , thought in activity's onstart method place. turns out don't see fadein animation suppose ending of return transition happens after onstart()

i checked sharedelementcallback doesn't tell when transition ends.

how catch moment when return transition ends ?

for activity you'll need call overridependingtransition() in activity a after calling startactivity() , provide own animations. can override onenteranimationcomplete() in activity a know when has been animated on screen.

for fragments, can adding own custom animations transitions using setcustomanimations() on transaction. these override default animations fragment transitions.