Android: Get Power status (if device is plugged in)

(From Activity)

public boolean getPowerStatus() {

        Intent intent = this.registerReceiver(null,

                    new IntentFilter(Intent.ACTION_BATTERY_CHANGED));

        int isConnected = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1);

        return isConnected == BatteryManager.BATTERY_PLUGGED_AC ||

                    isConnected == BatteryManager.BATTERY_PLUGGED_USB;

    }