Beiträge von Taka

public class MainActivity extends AppCompatActivity {


    NsdManager mNsdManager;
    NsdManager.DiscoveryListener mDiscoveryListener;


    public static final String SERVICE_TYPE = "_services._dns-sd._udp.";
    public static final String TAG = "NsdHelper";


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }


    @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
    @Override
    protected void onStart() {
        super.onStart();


        mNsdManager = (NsdManager) this.getSystemService(Context.NSD_SERVICE);
        discoverServices();
    }


    @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
    void initDiscoveryListener(){
        mDiscoveryListener = new NsdManager.DiscoveryListener() {
            @Override
            public void onStartDiscoveryFailed(String serviceType, int errorCode) {
                Log.e(TAG, "Discovery START failed: Error code:" + errorCode);
            }


            @Override
            public void onStopDiscoveryFailed(String serviceType, int errorCode) {
                Log.e(TAG, "Discovery STOP failed: Error code:" + errorCode);
            }


            @Override
            public void onDiscoveryStarted(String serviceType) {
                Log.d(TAG, "Service discovery started");
            }


            @Override
            public void onDiscoveryStopped(String serviceType) {
                Log.i(TAG, "Discovery stopped: " + serviceType);
            }


            @Override
            public void onServiceFound(NsdServiceInfo serviceInfo) {
                Log.d(TAG, "Service discovery success" + serviceInfo);
            }


            @Override
            public void onServiceLost(NsdServiceInfo serviceInfo) {
                Log.e(TAG, "service lost" + serviceInfo);
            }
        };
    }




    @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
    public void discoverServices() {
        stopDiscovery();  // Cancel any existing discovery request
        initDiscoveryListener();
        mNsdManager.discoverServices(
                SERVICE_TYPE, NsdManager.PROTOCOL_DNS_SD, mDiscoveryListener);
    }




    @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
    public void stopDiscovery() {
        if (mDiscoveryListener != null) {
            try {
                mNsdManager.stopServiceDiscovery(mDiscoveryListener);
            } finally {
            }
            mDiscoveryListener = null;
        }
    }


}