android网络连接工具类

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public class NetUtil {/** * 检查当前的网络 */public static boolean checkNet(Context context) {// 判断当前用户手机是否使用WIFI通信boolean isWIFI = isWIFIConnection(context);// 判断当前用户手机是否使用APN通信boolean isAPN = isAPNConnection(context);// 否——提示用户——界面跳转到网络设置if (isAPN == false && isWIFI == false) {return false;}if (isAPN) {// 是接入点// IP是10.0.0.172 端口是80 从手机的配置信息中读取// 有一部分手机：010.000.000.172setAPN(context);}return true;}/** * 从手机的配置信息中读取 */private static void setAPN(Context context) {Uri PREFERRED_APN_URI = Uri.parse("content://telephony/carriers/preferapn");ContentResolver contentResolver = context.getContentResolver();Cursor query = contentResolver.query(PREFERRED_APN_URI, null, null, null, null);//获取到当前正在连接的APN信息if(query!=null&&query.moveToNext()){//设置ip和端口的信息GlobalParams.IP=query.getString(query.getColumnIndex("proxy"));GlobalParams.PORT=query.getInt(query.getColumnIndex("port"));}}/** * 判断WIFI是否连接 *  * @return */private static boolean isWIFIConnection(Context context) {ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);NetworkInfo networkInfo = manager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);if (networkInfo != null)return networkInfo.isConnected();return false;}/** * 判断APN是否连接 *  * @return */private static boolean isAPNConnection(Context context) {ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);NetworkInfo networkInfo = manager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);if (networkInfo != null)return networkInfo.isConnected();return false;}}
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