Building A Simple Android App For Beginners : Hello World Source Code
3. Next go to Resources-> Layout > Main.axml to open the design. It will show you the default layout which contains a Button with text "Hello World, Click Me!". to view the source click on the source tab just next to design tab. You can go to Toolbox and drag and add items to this layout.
For our application we will need a EditText box and a button.
4. Click Source and add a EditText and a Button as shown below