utils.isHeadPhonePlugged()

audio 를 play할지 여부를 결정짓는 code

vibrate mode인 상태에도 이어폰이 있거나, 블투가 살아있으면 true를 return

 

refer to sayNotiText.apk

 

    private boolean isHeadphonesPlugged(){
        AudioManager am = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
        assert am != null;
        AudioDeviceInfo[] audioDevices = am.getDevices(AudioManager.GET_DEVICES_ALL);
        for(AudioDeviceInfo deviceInfo : audioDevices){
            if(deviceInfo.getType()==AudioDeviceInfo.TYPE_WIRED_HEADPHONES
                    || deviceInfo.getType()==AudioDeviceInfo.TYPE_BLUETOOTH_A2DP
                    || deviceInfo.getType()==AudioDeviceInfo.TYPE_BLUETOOTH_SCO
                    || deviceInfo.getType()==AudioDeviceInfo.TYPE_WIRED_HEADSET){
                return true;
            }
        }
        return false;
    }