android - Black screen between activities -


i black screen when start activity "b" activity "a"; if start activity "b" activity isn't "a", doesn't happen. why? try start activity "c" empty layout activity "a", black screen between transition still appears, activity "b" isn't problem. how resolve please? first time have black screen.

i have found problem; when started activity, didn't close correctly media player; black screen between activities doesn't appears anymore. thank support.


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