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Android : why PhoneCallListener still alive after activity finish?
i'm making a call and using a phone call listener to restart activity when phone state back to IDLE . but after i finish the activity , phone call listener still running, therefore when user make own call and hang-up , my activity bring up again !!
Use LISTEN_NONE as parameter to listen method to stop listening for updates.
来源：https://stackoverflow.com/questions/11667209/android-how-to-stop-listening-a-phonecalllistener