Unhappy [Q] WebView - Set URL from settings tab?!

I'm currently (trying) to make a app that simply displays a webpage.. However, I want to be able in the settings for the user to select the URL & port.. But finding it hard to do!

Basically, If the user presses the options button all I need is a box with two options..

IP:
Port:

So it'll look something like:

IP Address:

[ INPUT BOX HERE FOR IP ADDRESS (@IP_ID) ]

Port Number:

[ INPUT BOX HERE FOR Port ID (@Port_ID) ]

Then within the code for the webview..
The code is:

Code:
webView = (WebView) findViewById(R.id.webView1);

startWebView(MY DEFAULT URL);
All I basically need to do is change the IP & Port to what the user puts into the settings.. So..

Code:
startWebView(@IP_ID : @Port_ID)
I'm pretty new to making app's but have previously done PHP, C++ & MySQL ect.. But this has just thrown me off a little..

I've asked a couple of other places but they just direct my to the android dev page which throws me off even more