ScreenListenerService.java 文件源码

private void listenTelephonyState() {
    telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
    telephonyManager.listen(new PhoneStateListener(){
        @Override
        public void onCallStateChanged(int state, String incomingNumber) {
            super.onCallStateChanged(state, incomingNumber);
            switch (state){
                case TelephonyManager.CALL_STATE_IDLE:
                    //空闲
                    break;
                case TelephonyManager.CALL_STATE_RINGING:
                    //响铃
                    break;
                case TelephonyManager.CALL_STATE_OFFHOOK:
                    //挂机
                    break;
            }
        }
    },PhoneStateListener.LISTEN_CALL_STATE);
}