NetworkServiceDiscovery.java

package com.solarfighter.activities;

import java.io.IOException;
import java.net.InetAddress;

import javax.jmdns.JmDNS;
import javax.jmdns.ServiceEvent;
import javax.jmdns.ServiceListener;

import android.content.Context;
import android.content.Intent;
import android.net.nsd.NsdManager;
import android.net.nsd.NsdServiceInfo;
import android.net.wifi.WifiManager;
import android.net.wifi.WifiManager.MulticastLock;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.solarfighter.R;
import com.solarfighter.tools.Log;

public class NewInstallationActivity extends SherlockFragmentActivity {

    // Bonjour Pre JellyBean
	private MulticastLock lock;
	private static final String DNS_TYPE = "_http._tcp.local.";
	private static final String DNS_NAME = "Solarfighter Gateway";
	private JmDNS jmdns = null;
	private ServiceListener listener;

	// Bonjour JellyBean
	private NsdManager.DiscoveryListener discoveryListener;
	private NsdManager mNsdManager;

	private Button doneButton;
	private View backButton;

	/**
	 * @see android.app.Activity#onCreate(Bundle)
	 */
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_new_installation);

		doneButton = (Button) findViewById(R.id.done_button);
		doneButton.setOnClickListener(clickListener);

		// Back button
		backButton = findViewById(R.id.back_button);
		backButton.setClickable(true);
		backButton.setOnClickListener(clickListener);

//		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
//			setUpDiscoInfo();
//		} else {
			// Set up Bonjour
			Thread t = new Thread(new Runnable() {

				@Override
				public void run() {
					setUpDiscoInfoPreJellyBean();
				}
			});
			t.start();
//		}

	}

	protected void onResume() {
		super.onResume();
		if (jmdns != null) {
			jmdns.addServiceListener(DNS_TYPE, listener);
		}
		
		if(mNsdManager!=null){
			mNsdManager.discoverServices(DNS_TYPE, NsdManager.PROTOCOL_DNS_SD, discoveryListener);
		}
	};

	protected void onStop() {
		super.onStop();

		if (jmdns != null) {
			jmdns.removeServiceListener(DNS_TYPE, listener);
		}
		
		if(mNsdManager!=null){
			mNsdManager.stopServiceDiscovery(discoveryListener);
		}
	};

	protected void onDestroy() {
		super.onDestroy();

		if (jmdns != null) {
			try {
				jmdns.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		if (lock != null) {
			lock.release();
		}
	};

	OnClickListener clickListener = new OnClickListener() {

		@Override
		public void onClick(View v) {
			switch (v.getId()) {
			case R.id.back_button:
				finish();
				break;
			case R.id.done_button:
				startActivity(new Intent(NewInstallationActivity.this, ConfigurationStepOneActivity.class));
				break;
			default:
				break;
			}
		}
	};

	private void setUpDiscoInfo() {
		Log.d("Setting up Bonjour");
		discoveryListener = new NsdManager.DiscoveryListener() {

			@Override
			public void onStopDiscoveryFailed(String serviceType, int errorCode) {
				// TODO Auto-generated method stub

			}

			@Override
			public void onStartDiscoveryFailed(String serviceType, int errorCode) {
				// TODO Auto-generated method stub

			}

			@Override
			public void onServiceLost(NsdServiceInfo serviceInfo) {
				// TODO Auto-generated method stub

			}

			@Override
			public void onServiceFound(NsdServiceInfo serviceInfo) {
				Log.d("Service resolved: " + serviceInfo.getServiceName() + " host:" + serviceInfo.getHost() + " port:"
						+ serviceInfo.getPort() + " type:" + serviceInfo.getServiceType());
			}

			@Override
			public void onDiscoveryStopped(String serviceType) {
				// TODO Auto-generated method stub

			}

			@Override
			public void onDiscoveryStarted(String serviceType) {
				// TODO Auto-generated method stub

			}
		};
		mNsdManager = (NsdManager) getSystemService(Context.NSD_SERVICE);
		mNsdManager.discoverServices(DNS_TYPE, NsdManager.PROTOCOL_DNS_SD, discoveryListener);
	}

	private void setUpDiscoInfoPreJellyBean() {
		Log.d("Setting up Bonjour Pre-JellyBean");
		listener = new ServiceListener() {

			@Override
			public void serviceResolved(ServiceEvent event) {
				Log.d("Service resolved: " + event.getInfo().getQualifiedName() + " port:" + event.getInfo().getPort()
						+ " domain:" + event.getInfo().getDomain());
			}

			@Override
			public void serviceRemoved(ServiceEvent event) {
				// TODO Auto-generated method stub

			}

			@Override
			public void serviceAdded(ServiceEvent event) {
				// TODO Auto-generated method stub

			}
		};

		WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
		lock = wifi.createMulticastLock("SolarFighterBonjour");
		lock.setReferenceCounted(true);
		lock.acquire();
		try {
			// Bug http://stackoverflow.com/a/13677686/1143172
			int intaddr = wifi.getConnectionInfo().getIpAddress();

			byte[] byteaddr = new byte[] { (byte) (intaddr & 0xff), (byte) (intaddr >> 8 & 0xff),
					(byte) (intaddr >> 16 & 0xff), (byte) (intaddr >> 24 & 0xff) };
			InetAddress addr = InetAddress.getByAddress(byteaddr); // Need to
																	// process
																	// UnknownHostException

			jmdns = JmDNS.create(addr);
			jmdns.addServiceListener(DNS_TYPE, listener);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}