I have one big layout, and one smaller layout inside of it.
How do I create a line border around the small layout?
Sure. You can add a border to any layout you want. Basically, you need to create a custom drawable and add it as a background to your layout. example:
Create a file called customborder.xml
in your drawable folder:
Now apply it as a background to your smaller layout:
That should do the trick.
Also see: