Discovery Listener Class

MyDiscoveryListener.java

public class MyDiscoveryListener implements NsdManager.DiscoveryListener {

    private static final String TAG = "MyDiscoveryListener";
    public static final String SERVICE_TYPE = "_http._tcp.";
    String mServiceName;
    NsdManager mNsdManager;
    MainActivity activity;

    public MyDiscoveryListener(String mServiceName,NsdManager mNsdManager,MainActivity activity)
    {
        this.mServiceName = mServiceName;
        this.mNsdManager = mNsdManager;
        this.activity = activity;
    }

    //  Called as soon as service discovery begins.
    @Override
    public void onDiscoveryStarted(String regType) {
        Log.d(TAG, "Service discovery started");
    }

    @Override
    public void onServiceFound(NsdServiceInfo service) {
        // A service was found!  Do something with it.
        Log.d(TAG, "Service discovery success>> " + service);
        if (!service.getServiceType().equals(SERVICE_TYPE)) {
            // Service type is the string containing the protocol and
            // transport layer for this service.
            Log.d(TAG, "Unknown Service Type: " + service.getServiceType());
        } else {

             this.activity.addAppliance(new Appliance(service.getServiceName()));
        }
    }

    @Override
    public void onServiceLost(NsdServiceInfo service) {
        this.activity.removeAppliance(new Appliance(service.getServiceName()));
    }

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

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

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