How to detect network status change(realtime)

How to get network status change realtime?

When is disconnecting network? When is connecting network?

To apply network status detection How to detect Network Status, I will detect network status at the realtime.

Steps

1. Create BroadcastReceiver to detect
2. Register this BroadcastReceiver

Register

I suggest 2 ways to register BroadcastReceiver

Detect Application Level

Detect everywhere in Application(like NSNotification)

At first, extends BroadcastReceiver class and use network connection code.

public class NetworkConnectionReceiver extends BroadcastReceiver 
{
	//private static String TAG = "NetworkConnectionReceiver";
	
	@Override
	public void onReceive(Context context, Intent intent) 
	{
		ConnectivityManager manager =(ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
		boolean connect = NetworkConnection.isConnected(manager);
		
		//String message = connect ? "Connect" : "Disconnect";
		//Log.d(TAG, message);
		//Toast.makeText(context, message, Toast.LENGTH_LONG).show();
	}

}

<receiver android:name=".network.NetworkConnectionReceiver">
   <intent-filter>
      <action android:name="android.net.conn.CONNECTIVITY_CHANGE">
   </action></intent-filter>
</receiver>

The point is android.net.conn.CONNECTIVITY_CHANGE 
How to test?
While running application, make wifi off, you can see change status in Logcat.

Detect within an Acitivity

Create instance of this class and register
If you want change UI, you should create it as inner class

NetworkConnectionReceiver receiver = new NetworkConnectionReceiver();
intentFilter = new IntentFilter();
intentFilter.addAction("android.net.conn.CONNECTIVITY_CHANGE");
registerReceiver(receiver, intentFilter);