来源:互联网

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
/**
* function 判断网络连接 的工具类
*/
public class NetWorkConect {
    /**
     * 判断是否具有网络连接
     * @param context
     * @return
     */
    public static final boolean hasNetWorkConection(Context context){
        //获取连接活动管理器
        final ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        //获取连接的网络信息
        final NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
        return (networkInfo != null && networkInfo.isAvailable());
    }
    /**
     * 判断是否具有wifi连接
     * @param context
     * @return
     */
    public static final boolean hasWifiConnection(Context context){
        //获取连接活动管理器
        final ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        final NetworkInfo networkInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        return (networkInfo != null && networkInfo.isAvailable());
    }
    /**
     * 判断是否有GPRS连接
     * @param context
     * @return
     */
    public static final boolean hasGPRSConnection(Context context){
        //获取连接活动管理器
        final ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        final NetworkInfo networkInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
        return (networkInfo != null && networkInfo.isAvailable());
    }
    /**
     * 判断网络连接类型
     * @param context
     * @return
     */
    public static final int getNetworkConnectionType(Context context){
        final ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        final NetworkInfo wifiNetWorkInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        final NetworkInfo mobileNetWorkInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
        if(wifiNetWorkInfo != null && wifiNetWorkInfo.isAvailable()){
            return ConnectivityManager.TYPE_WIFI;
        } else if(mobileNetWorkInfo != null && mobileNetWorkInfo.isAvailable()){
            return ConnectivityManager.TYPE_MOBILE;
        } else {
            return -1;
        }
    }
}