网络工具类

public final class NetworkUtils {

	

	private NetworkUtils() {

	// This utility class is not publicly instantiable

	}

	

	public static boolean isNetworkConnected(Contextcontext) {

	ConnectivityManager cm =

	(ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

	NetworkInfo activeNetwork = cm.getActiveNetworkInfo();

	return activeNetwork != null && activeNetwork.isConnectedOrConnecting();

	}

	}