How is this slide-up menu from the iPhone messages app implemented?

Question

In the Messages app on my iPhone (iOS 8.0.2), when you are composing a message and you click on the camera icon to insert an image, a \"slide-up\" menu appears from the bottom.

Answer 1

It's called a UIActivityViewController. You can read more about it here:

http://nshipster.com/uiactivityviewcontroller/