How to read phone state over bluetooth

Views: 824  |   Date: 2015-09-28 03:12:45

I try to develop an application that connect to mobile phone and read its phone state (incoming call, outgoing call etc.) like a smart watch. I used a smartwatch and connect to my phone, and then open android studio to look at logcat. I understand the watch using bluetooth Obex service,Hfp,a2dp Rfcomm services but i didn'n any example or instructions for develop a mobile app with using them.
how can i do?

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