在实际开发中，往往一些工具类对我们的帮助是非常大的，借此，我在前人各位前辈的基础上，整理了一个网络的工具类，特此献上：

/** * @类名:NetUtil * @类描述:网络判断处理类 * @创建时间:2015年2月12日-上午9:34:32 * @修改人: * @修改时间: * @修改备注: * @版本: */public class NetUtil { public static boolean isNet = true; public static enum netType { wifi, CMNET, CMWAP, noneNet } /** * @方法说明:判断WIFI网络是否可用 * @方法名称:isWifiConnected * @param context * @return * @返回值:boolean */ public static boolean isWifiConnected(Context context) { if (context != null) { ConnectivityManager mConnectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo mWiFiNetworkInfo = mConnectivityManager .getNetworkInfo(ConnectivityManager.TYPE_WIFI); if (mWiFiNetworkInfo != null) { return mWiFiNetworkInfo.isAvailable(); } } return false; } /** * @方法说明:判断MOBILE网络是否可用 * @方法名称:isMobileConnected * @param context * @return * @返回值:boolean */ public static boolean isMobileConnected(Context context) { if (context != null) { ConnectivityManager mConnectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo mMobileNetworkInfo = mConnectivityManager .getNetworkInfo(ConnectivityManager.TYPE_MOBILE); if (mMobileNetworkInfo != null) { return mMobileNetworkInfo.isAvailable(); } } return false; } /** * @方法说明:获取当前网络连接的类型信息 * @方法名称:getConnectedType * @param context * @return * @返回值:int */ public static int getConnectedType(Context context) { if (context != null) { ConnectivityManager mConnectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo mNetworkInfo = mConnectivityManager .getActiveNetworkInfo(); if (mNetworkInfo != null && mNetworkInfo.isAvailable()) { return mNetworkInfo.getType(); } } return -1; } /** * @方法说明:获取当前的网络状态 -1：没有网络 1：WIFI网络2：wap 网络3：net网络 * @方法名称:getAPNType * @param context * @return * @返回值:netType */ public static netType getAPNType(Context context) { ConnectivityManager connMgr = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo networkInfo = connMgr.getActiveNetworkInfo(); if (networkInfo == null) { return netType.noneNet; } int nType = networkInfo.getType(); if (nType == ConnectivityManager.TYPE_MOBILE) { if (networkInfo.getExtraInfo().toLowerCase().equals("cmnet")) { return netType.CMNET; } else { return netType.CMWAP; } } else if (nType == ConnectivityManager.TYPE_WIFI) { return netType.wifi; } return netType.noneNet; } /** * @方法说明:判断是否有网络连接 * @方法名称:isNetworkConnected * @param context * @return * @返回值:boolean */ public static boolean isNetworkConnected(Context context) { if (context != null) { ConnectivityManager mConnectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo mNetworkInfo = mConnectivityManager .getActiveNetworkInfo(); if (mNetworkInfo != null) { return mNetworkInfo.isAvailable(); } } return false; } /** * @方法说明:网络是否可用 * @方法名称:isNetworkAvailable * @param context * @return * @返回值:boolean */ public static boolean isNetworkAvailable(Context context) { ConnectivityManager mgr = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo[] info = mgr.getAllNetworkInfo(); if (info != null) { for (int i = 0; i < info.length; i++) { if (info[i].getState() == NetworkInfo.State.CONNECTED) { return true; } } } return false; } /** * @方法说明:判断是否是手机网络 * @方法名称:is3GNet * @param context * @return * @返回值:boolean */ public static boolean is3GNet(Context context) { ConnectivityManager connectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo(); if (activeNetInfo != null && activeNetInfo.getType() == ConnectivityManager.TYPE_MOBILE) { return true; } return false; }}

好的！希望对大家有帮助！

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