1、设置权限
<uses-permission android:name="android.permission.INTERNET"></uses-permission> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission> <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission> <uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission>
2、获取IP地址
public class NetWorkUtils {/*** 检查网络是否可用** @param paramContext* @return*/public static boolean checkEnable(Context paramContext) {boolean i = false;NetworkInfo localNetworkInfo = ((ConnectivityManager) paramContext.getSystemService("connectivity")).getActiveNetworkInfo();if ((localNetworkInfo != null) && (localNetworkInfo.isAvailable()))return true;return false;}/*** 将ip的整数形式转换成ip形式** @param ipInt* @return*/public static String int2ip(int ipInt) {StringBuilder sb = new StringBuilder();sb.append(ipInt & 0xFF).append(".");sb.append((ipInt >> 8) & 0xFF).append(".");sb.append((ipInt >> 16) & 0xFF).append(".");sb.append((ipInt >> 24) & 0xFF);return sb.toString();}/*** 获取当前ip地址** @param context* @return*/public static String getLocalIpAddress(Context context) {try {WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);WifiInfo wifiInfo = wifiManager.getConnectionInfo();int i = wifiInfo.getIpAddress();return int2ip(i);} catch (Exception ex) {return " 获取IP出错鸟!!!!请保证是WIFI,或者请重新打开网络!\n" + ex.getMessage();}// return null;}}//GPRS连接下的ippublic String getLocalIpAddress() {try {for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements(); ) {NetworkInterface intf = en.nextElement();for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements(); ) {InetAddress inetAddress = enumIpAddr.nextElement();if (!inetAddress.isLoopbackAddress()) {return inetAddress.getHostAddress().toString();}}}} catch (SocketException ex) {Log.e("WifiPreference IpAddress", ex.toString());}return null;}
