The code can detect the network status on Android mobile.

NetworkStatus.java

public void checkNetworkType()
{
	ConnectivityManager connectivityManager = (ConnectivityManager) this.getSystemService( CONNECTIVITY_SERVICE );
	NetworkInfo networkActive = connectivityManager.getActiveNetworkInfo();
	NetworkInfo networkWifi = connectivityManager.getNetworkInfo( ConnectivityManager.TYPE_WIFI );

	boolean connect = false;
	if ( connectivityManager.getNetworkInfo( ConnectivityManager.TYPE_WIFI ).getState() == NetworkInfo.State.CONNECTED )
		connect = true;
	
	String networkSummary = String.format( "Connect? %s, Active=%s\n"
			+ "WiFi Status=%s\nWiFi Available? %s\nWiFi Connect? %s\n",			
			connect ? "O" : "X",
			networkActive == null ? "Null" : networkActive.getTypeName(), 
			networkWifi.getState(), networkWifi.isAvailable() ? "Yes" : "No", networkWifi.isConnectedOrConnecting() ? "Yes" : "No" );
	AlertDialog.Builder summaryDialog = new AlertDialog.Builder( this );
	summaryDialog.setTitle( this.getResources().getString( R.string.app_name ) );
	summaryDialog.setMessage( networkSummary );
	summaryDialog.setPositiveButton( "Ok", null );
	summaryDialog.show();
}