BackgroundAudioService.java 文件源码

private void initPhoneCallListener() {
    PhoneStateListener phoneStateListener = new PhoneStateListener() {
        @Override
        public void onCallStateChanged(int state, String incomingNumber) {
            if (state == TelephonyManager.CALL_STATE_RINGING) {
                //Incoming call: Pause music
                pauseVideo();
            } else if (state == TelephonyManager.CALL_STATE_IDLE) {
                //Not in call: Play music
                Log.d(TAG, "onCallStateChanged: ");
                resumeVideo();
            } else if (state == TelephonyManager.CALL_STATE_OFFHOOK) {
                //A call is dialing, active or on hold
            }
            super.onCallStateChanged(state, incomingNumber);
        }
    };

    TelephonyManager mgr = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
    if (mgr != null) {
        mgr.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);
    }
}