Android obtains the local IP Address

Wifimanager method:

Public String getip (){

// Get the WiFi Service
Wifimanager = (wifimanager) getsystemservice (context. wifi_service );
// Determine whether WiFi is enabled
If (! Wifimanager. iswifienabled ()){
Wifimanager. setwifienabled (true );
}
Wifiinfo = wifimanager. getconnectioninfo ();
Int IPaddress = wifiinfo. getipaddress ();
String IP = inttoip (IPaddress );
Return IP;

}

Private string inttoip (int I ){

Return (I & 0xff) + "." +
(I> 8) & 0xff) + "." +
(I> 16) & 0xff) + "." +
(I> 24 & 0xff );
}

Add permissions.

<Uses-Permission Android: Name = "android. Permission. access_wifi_state"/>
<Uses-Permission Android: Name = "android. Permission. wake_lock"/>
<Uses-Permission Android: Name = "android. Permission. change_wifi_state"/>

// End

Another method is to obtain data in Java.

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 = enumipaddr. nextelement ();
If (! Inetaddress. isloopbackaddress ()){
Return inetaddress. gethostaddress (). tostring ();
}
}
}
} Catch (socketexception ex ){
Log. E ("here", Ex. tostring ());
}
Return NULL;
}

// The permissions to be added

<Uses-Permission Android: Name = "android. Permission. access_wifi_state"/>

<Uses-Permission Android: Name = "android. Permission. Internet"/>

<Uses-Permission Android: Name = "android. Permission. wake_lock"/>

<Uses-Permission Android: Name = "android. Permission. change_wifi_state"/>