最近看了好多网上获取IP地址的例子，发现好多都不完全准确，这里我写一下获取ip地址的两种方式。
比如微信支付，后台在做接口的时候，要求App端传入IP地址，我们需要判断是网络环境，WI-FI还是3G，所以需要获取这两种环境的ip地址。
第一步：首先是判断网络环境：
String ip;
ConnectivityManager conMann = (ConnectivityManager)
this.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo mobileNetworkInfo = conMann.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
NetworkInfo wifiNetworkInfo = conMann.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
if (mobileNetworkInfo.isConnected()) {
ip = getLocalIpAddress();
System.out.println("本地ip-----"+ip);
}else if(wifiNetworkInfo.isConnected())
{
WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
int ipAddress = wifiInfo.getIpAddress();
ip = intToIp(ipAddress);
System.out.println("wifi_ip地址为------"+ip);
}
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如果连接的是移动网络，第二步，获取本地ip地址：getLocalIpAddress();这样获取的是ipv4格式的ip地址。
public String getLocalIpAddress() {
try {
String ipv4;
ArrayList<NetworkInterface> nilist = Collections.list(NetworkInterface.getNetworkInterfaces());
for (NetworkInterface ni: nilist)
{
ArrayList<InetAddress> ialist = Collections.list(ni.getInetAddresses());
for (InetAddress address: ialist){
if (!address.isLoopbackAddress() && InetAddressUtils.isIPv4Address(ipv4=address.getHostAddress()))
{
return ipv4;
}
}
}
} catch (SocketException ex) {
Log.e("localip", ex.toString());
}
return null;
}
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如果连接的是WI-FI网络，第三步，获取WI-FI ip地址：intToIp(ipAddress);
public static String intToIp(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();
}
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网上的很多代码获取的是ipv6的本地ip，在微信支付里这种ip地址无法调起微信支付，附代码：
private String getlocalIp() {
String ip;
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()&&!inetAddress.isLinkLocalAddress()) {
// ip=inetAddress.getHostAddress().toString();
System.out.println("ip=========="+inetAddress.getHostAddress().toString());
return inetAddress.getHostAddress().toString();
}
}
}
} catch (SocketException ex) {
Log.e("WifiPreference IpAddress", ex.toString());
}
return null;
}
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