In this post here: Android Studio - Error in Calling Activity I told the problem I was facing.
In short ...
I developed an application (game) with buttons that call screens. The idea is like this:
Screen 1 - home Screen 2 - choose character Screen 3 - knows object1 Screen 4 - play with object1 Screen 5 - knows object2 Screen 6 - play with object2 Screen 7 - know object3 .... follows the pattern ..
I solved the activities and released the media player.
On my phone it is working well all stages (screens). But when I put it on other phones, the app again gives trouble. It stops working on the same screen as it stopped on my phone. When it stops, it returns to the home screen, I believe it proves that all the previous screens have been finalized. I can not understand what's happening. Help! -