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“通用” WLAN网络,并且该设备连接到由另一个Android设备通过热点托管的wifi网络,则效果很好。如果设备未连接到任何wifi网络,则返回“0.0.0.0”(正确)。但是,如果设备通过提供热点来托管wifi网络,则该方法仍将返回“0.0.0.0”。如何在“自己的wifi网络”中获取热点提供设备的真实IP地址?
问候与问候
最佳答案
您几乎是对的,热点的默认IP地址是192.168.43.1
(如果设备制造商未更改)。
您可以检查Android框架(AOSP)的源代码。/frameworks/base/services/java/com/android/server/connectivity/Tethering.java
/frameworks/base/wifi/java/android/net/wifi/WifiStateMachine.java
在Tethering.java中,
private 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",
};
另外,在WifiStateMachine.java中
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;
}
因此,默认值为
192.168.43.1
。