判断网络是否连接

package com.baway.network;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

public class IsNetWork {

    public static boolean IsNetWorkStatic(Context con) {

        ConnectivityManager manager = (ConnectivityManager) con
                .getSystemService(Context.CONNECTIVITY_SERVICE);

        if (manager == null) {
            return false;
        }
        NetworkInfo info = manager.getActiveNetworkInfo();

        return (info != null) && info.isAvailable();
    }
}