How can I get local IP with App inventor 2?

[Marius Dege]

Hello,

did somebody know, if I could get my local IP adress of my smartphone with App Inventor 2?

[Taifun]

you could write your own extension and create a block yourself...

more information see here https://groups.google.com/d/msg/mitappinventortest/Ip2AX036d0U/5NJlAEbFCgAJ

however that will be more advanced and will require some Java skills...

Taifun

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Trying to push the limits of App Inventor! Snippets and Tutorials from Pura Vida Apps by  Taifun.

[Marius Dege]

Hello,

did you send some pictures? The won't displayed.

I'm from germany, it's not so easy for me to check this from ai2, because everything is on englisch.

I would apreaciate, if you could explain sth. for me.

Could I wirte everthing for the blocks, or is this limited by sth (i thing eg. a tcp connection for the web-interface (this time, it's only http-put and get)

And I need a function/block, that gives me the local ip from the device.

could you tell me, if I could make that (with lan ip it's really important for me).

Other Question: Must I import my projects, where I want to use that extension, to the http://extension-test.appinventor.mit.edu/ ?

Thanks a lot for answers!

[spider pig]

If you want your public ip, you can do that with a web component (in the blocks view under connectivity/Web). Here is an example

[Marius Dege]

Hello spider pig,

that's good, but I wanna have the LOCAL IP (the IP from my home network, and not the web ip).

[spider pig]

You could use the same strategy if you run a server somewhere in your home network that sends back your ip. But I wonder why you need that ip anyway?

[Marius Dege]

Hello Taifun,

here's a code example to get local ip, okay, and now? How can I get with that an aix extension?

 <uses-permission android:name="android.permission.INTERNET" />
 <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

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 inetAddress = enumIpAddr.nextElement();
                if (!inetAddress.isLoopbackAddress()) {
                return inetAddress.getHostAddress().toString();
                }
           }
       }
       } catch (Exception ex) {
          Log.e("IP Address", ex.toString());
      }
      return null;
}

[Marius Dege]

Hello,

this is not possible, because I build a device, wich you can control via WLAN with my App from App-Inventor.

I need the ip, to check, which router level I have (eg 192.168.x.203), so I need the x for the static ip from the device to control. I want to make that automaticly, not with a switch.

Why I can't make a webserver? I have build 3 devices, 1 for me, 1 for my girl and one for a friend. That's not practicable to make that by my "customers" :D I wan't to make a autonom running system.

They got my device, download my app via google Play and ready.

[Taifun]

you can get the local IP address now using my new WiFi extension

there are also some more useful blocks available there...

for more information see here https://puravidaapps.com/wifi.php

Thank you Marius for being the sponsor of the LocalIP block!

Taifun