安卓中获取ip地址
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获取当前手机的ip地址
public static String getIPAddress(Context context) { NetworkInfo info = ((ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE)).getActiveNetworkInfo(); if (info != null && info.isConnected()) { if (info.getType() == ConnectivityManager.TYPE_MOBILE) {//当前使用2G/3G/4G网络 try { //Enumeration<NetworkInterface> en=NetworkInterface.getNetworkInterfaces(); 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() && inetAddress instanceof Inet4Address) { return inetAddress.getHostAddress(); } } } } catch (SocketException e) { e.printStackTrace(); } } else if (info.getType() == ConnectivityManager.TYPE_WIFI) {//当前使用无线网络 WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE); WifiInfo wifiInfo = wifiManager.getConnectionInfo(); String ipAddress = intIP2StringIP(wifiInfo.getIpAddress());//得到IPV4地址 return ipAddress; } } else { //当前无网络连接,请在设置中打开网络 } return null; } /** * 将得到的int类型的IP转换为String类型 * * @param ip * @return */ public static String intIP2StringIP(int ip) { return (ip & 0xFF) + "." + ((ip >> 8) & 0xFF) + "." + ((ip >> 16) & 0xFF) + "." + (ip >> 24 & 0xFF); }
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获取设备的ip地址
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原理是遍历所有网络接口的所有IP地址。如果方法返回null,则设备没有可用的网络连接。方法返回的IP地址是设备正在使用的IP地址。
public 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(LOG_TAG, ex.toString()); } return null; }
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