i have tried to use Accessibility Service API to detect any kind of remote application's work while my app is running. but once application is shut down, and when i run the app as twice, it runs properly. here is the problem that i tent to block running if remote application is running when i try to run my app. please comment any sources if there is any component that i can use to detect remote application.
used Accessibility Service API but it worked only once. other than focused the target application into foreground, Accessibility Service won't work.