
In this tutorial we’re going to cover the UISlider, a grand bit of invention that allows you to output a value as you slide up and down. This user interface element is typically seen in apps with volume controllers such as the Music app or Spotify.
The slider allows the user to move up and down to a value without having to input a number but is also great for tactile responses like volume where the user can slide up to increase the volume or down to decrease it, simple stuff but a powerful element nevertheless.
We’re going to create a simple resizing app using the UISlider, the app will have one purpose, slide up to increase a box size and down to decrease it but it will give you an understanding of the element and how to read its responses.

