package com.jason.demo.androidip;
import android.content.Context;
import android.net.DhcpInfo;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.text.format.Formatter;
public class IPAddress {
public String getIPAddress(Context ctx){
//获取wifi服务
WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
//判断wifi是否开启 如果没有开启 此方法会开启wifi
if (!wifiManager.isWifiEnabled()) {
wifiManager.setWifiEnabled(true);
}
WifiManager wifi_service = (WifiManager) ctx.getSystemService(Context.WIFI_SERVICE);
DhcpInfo dhcpInfo = wifi_service.getDhcpInfo();
WifiInfo wifiinfo = wifi_service.getConnectionInfo();
System.out.println("Wifi info----->"+wifiinfo.getIpAddress());
System.out.println("DHCP info gateway----->"+Formatter.formatIpAddress(dhcpInfo.gateway));
System.out.println("DHCP info netmask----->"+Formatter.formatIpAddress(dhcpInfo.netmask));
//DhcpInfo中的ipAddress是一个int型的变量,通过Formatter将其转化为字符串IP地址
return Formatter.formatIpAddress(dhcpInfo.ipAddress);
}
}
最后要说的是 添加权限
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.INTERNET"/>