Does swift playground support UIKit?

Question

I tried to create a UILabel in playground but failed. Does playground only support OS X development for now?

Answer 1

YES, it does!

File: New > File... > iOS > Source > Playground

import UIKit
let lbl = UILabel(frame: CGRectMake(0, 0, 300, 100))
lbl.text = "Hello StackOverflow!"

Then, save the file. This will trigger the Playground to interpret UI related things. Sometimes you may need to toss in a trailing newline and save again -- its a beta. At this point, the word "UILabel" should appear on the right-hand side.

Now, to actually view what you've done, you've got to click on the "Quick View" eye on the right, or the white circle to open it in Assistant Editor:

Here's a screenshot of some basic things with UIImage working, etc.