Android获取热点提供设备的IP地址
我目前正在使用Android获取热点提供设备的IP地址,android,networking,ip,android-wifi,wifimanager,Android,Networking,Ip,Android Wifi,Wifimanager,我目前正在使用 public static String getLocalIPAddress(WifiManager wm){ return Formatter.formatIpAddress(wm.getConnectionInfo().getIpAddress()); } 获取执行设备的IP地址。如果该设备连接到一个“公共”wlan网络，并且该设备连接到一个wifi网络，该网络由另一个android设备通过hotspot托管，则该功能正常。如果设备未连接到任何wifi网络，则返回“
public static String getLocalIPAddress(WifiManager wm){
return Formatter.formatIpAddress(wm.getConnectionInfo().getIpAddress());
}
thx&HARDIES我测试了一小部分不同的设备，似乎热点提供设备的网络上总是IP
192.168.43.1192.168.43.1/frameworks/base/services/java/com/android/server/connectivity/Tethering.java/frameworks/base/wifi/java/android/net/wifi/WifiStateMachine.javaprivate static final String USB_NEAR_IFACE_ADDR = "192.168.42.129";
private static final int USB_PREFIX_LENGTH = 24;
// USB is 192.168.42.1 and 255.255.255.0
// Wifi is 192.168.43.1 and 255.255.255.0
// BT is limited to max default of 5 connections. 192.168.44.1 to 192.168.48.1
// with 255.255.255.0
private String[] mDhcpRange;
private static final String[] DHCP_DEFAULT_RANGE = {
"192.168.42.2", "192.168.42.254", "192.168.43.2", "192.168.43.254",
"192.168.44.2", "192.168.44.254", "192.168.45.2", "192.168.45.254",
"192.168.46.2", "192.168.46.254", "192.168.47.2", "192.168.47.254",
"192.168.48.2", "192.168.48.254",
};
private boolean startTethering(ArrayList<String> available) {
boolean wifiAvailable = false;
checkAndSetConnectivityInstance();
String[] wifiRegexs = mCm.getTetherableWifiRegexs();
for (String intf : available) {
for (String regex : wifiRegexs) {
if (intf.matches(regex)) {
InterfaceConfiguration ifcg = null;
try {
ifcg = mNwService.getInterfaceConfig(intf);
if (ifcg != null) {
/* IP/netmask: 192.168.43.1/255.255.255.0 */
ifcg.setLinkAddress(new LinkAddress(
NetworkUtils.numericToInetAddress("192.168.43.1"), 24));
ifcg.setInterfaceUp();
mNwService.setInterfaceConfig(intf, ifcg);
}
} catch (Exception e) {
loge("Error configuring interface " + intf + ", :" + e);
return false;
}
if(mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) {
loge("Error tethering on " + intf);
return false;
}
mTetherInterfaceName = intf;
return true;
}
}
}
// We found no interfaces to tether
return false;
}
private boolean开始搜索（ArrayList可用）{
布尔wifiAvailable=false；
检查并设置ConnectionInstance（）；
字符串[]wifiregxs=mCm.GetTherableWifiregxs（）；
对于（字符串intf:available）{
for（String regex:wifiregxs）{
if（intf.matches（regex））{
接口配置ifcg=null；
试试{
ifcg=mNwService.getInterfaceConfig（intf）；
如果（ifcg！=null）{
/*IP/网络掩码：192.168.43.1/255.255.255.0*/
ifcg.setLinkAddress（新链接地址（
网络地址（“192.168.43.1”），24）；
ifcg.setInterfaceUp（）；
mNwService.setInterfaceConfig（intf、ifcg）；
}
}捕获（例外e）{
loge（“错误配置接口”+intf+，：“+e”）；
返回false；
}
如果（mCm.tether（intf）！=ConnectivityManager.tether\u错误\u无错误）{
loge（“在“+intf”上的错误栓系）；
返回false；
}
mTetherInterfaceName=intf；
返回true；
}
}
}
//我们没有找到与系绳的接口
返回false；
}
因此，默认值为192.168.43.1热点可能充当DHCP服务器。所以 从远程（客户端）连接到it呼叫方法后获取wifi热点的IP地址（服务器） 然后
将返回已连接热点的ip地址，是的，热点的大多数默认ip地址是，虽然这是一个老问题，但这可能会帮助某些人。这将返回设备的ip地址，只要您已打开热点
private String getIpAddress() {
String ip = "";
try {
Enumeration<NetworkInterface> enumNetworkInterfaces = NetworkInterface
.getNetworkInterfaces();
while (enumNetworkInterfaces.hasMoreElements()) {
NetworkInterface networkInterface = enumNetworkInterfaces
.nextElement();
Enumeration<InetAddress> enumInetAddress = networkInterface
.getInetAddresses();
while (enumInetAddress.hasMoreElements()) {
InetAddress inetAddress = enumInetAddress.nextElement();
if (inetAddress.isSiteLocalAddress()) {
ip += "SiteLocalAddress: "
+ inetAddress.getHostAddress() + "\n";
}
}
}
} catch (SocketException e) {
// TODO Auto-generated catch block
e.printStackTrace();
ip += "Something Wrong! " + e.toString() + "\n";
}
return ip;
}
私有字符串getIpAddress（）{
字符串ip=“”；
试一试{
枚举enumNetworkInterfaces=网络接口
.getNetworkInterfaces（）；
while（enumNetworkInterfaces.hasMoreElements（））{
NetworkInterface NetworkInterface=EnumNetworkInterface
.nextElement（）；
枚举enumInetAddress=网络接口
.getInetAddresses（）；
while（enumInetAddress.hasMoreElements（））{
InetAddress InetAddress=enumInetAddress.nextElement（）；
if（inetAddress.isSiteLocalAddress（））{
ip+=“站点本地地址：”
+inetAddress.getHostAddress（）+“\n”；
}
}
}
}捕获（SocketException e）{
//TODO自动生成的捕捉块
e、 printStackTrace（）；
ip++=“有问题！”+e.toString（）+“\n”；
}
返回ip；
}
public InetAddress intToInetAddress(int hostAddress)
{
byte[] addressBytes = {(byte) (0xff & hostAddress),
(byte) (0xff & (hostAddress >> 8)),
(byte) (0xff & (hostAddress >> 16)),
(byte) (0xff & (hostAddress >> 24))};
try
{
return InetAddress.getByAddress(addressBytes);
}
catch (UnknownHostException e)
{
throw new AssertionError();
}
}
private String getIpAddress() {
String ip = "";
try {
Enumeration<NetworkInterface> enumNetworkInterfaces = NetworkInterface
.getNetworkInterfaces();
while (enumNetworkInterfaces.hasMoreElements()) {
NetworkInterface networkInterface = enumNetworkInterfaces
.nextElement();
Enumeration<InetAddress> enumInetAddress = networkInterface
.getInetAddresses();
while (enumInetAddress.hasMoreElements()) {
InetAddress inetAddress = enumInetAddress.nextElement();
if (inetAddress.isSiteLocalAddress()) {
ip += "SiteLocalAddress: "
+ inetAddress.getHostAddress() + "\n";
}
}
}
} catch (SocketException e) {
// TODO Auto-generated catch block
e.printStackTrace();
ip += "Something Wrong! " + e.toString() + "\n";
}
return ip;
}
ip -4 route get 8.8.8.8 | grep via
8.8.8.8 via 192.168.43.248 dev wlan0 table 1030 src 192.168.43.20 uid 12345