Changing text of Swift UILabel

Question

I am attempting to learn Apple\'s Swift. I was recently trying to build a GUI app, but I have a question:

How do I interact with GUI elements of my app? For instance

Answer 1

If you have something like this for an IBOutlet:

@IBOutlet var someLabel: UILabel!

then you could set the text property just like in your example:

someLabel.text = "Whatever text"

If you're having problems with this, perhaps you're not assigning the text property in the right place. If it's in a function that doesn't get called, that line won't execute, and the text property won't change. Try overriding the viewDidLoad function, and put the line in there, like this:

override func viewDidLoad() {
    super.viewDidLoad()
    someLabel.text = "Whatever text"
}

Then, as soon as the view loads, you'll set the text property. If you're not sure if a line of code is executing or not, you can always put a breakpoint there, or add some output. Something like

println("Checkpoint")

inside a block of code you're unsure about could really help you see when and if it runs.

Hope this helps.