如何在Android中识别来电的开始和结束？

Question

I'm developing an application which should:

• Start when incoming call begins.
• End as soon as the call has ended.

More specifically, I don't want the application to begin while the phone is ringing, but when the actual conversation is begins (aka, the user has accepted the incoming call).

Does anyone know how to do this? And how to catch these events?

Answer 1

Broadcast Receiver will help you. Here 's the official google developer page on it.

Here is a small tutorial on the same.

Answer 2

What you want is provided by the TelephonyManager .

You should create a BroadcastReceiver which listens for ACTION_PHONE_STATE_CHANGED . When you declare it in your AndroidManifest.xml it will spawn your service/activity. When you are spawned it's very likely that the phone is currently just in the ringing state. So you have to register for further changes of the PhoneState via TelephonyManager.listen() . This way you will notice when the phone got hooked off and also when it goes back to idle.

Don't forget to request the READ_PHONE_STATE permission .