How to loop through all UIButtons in my Swift view?

Question

How would I loop through all UIButtons in my view in Swift? I would want to set all the titles to "", but my for-loop in Swift is giving an error.

for btns in self.view as [UIButton] {
  // set the title to ""
}

Answer 1

This code should work:

for view in self.view.subviews as [UIView] {
    if let btn = view as? UIButton {
        btn.setTitleForAllStates("")
    }
}

You need to iterate through the subViews array.

Answer 2

Shortened and updated for Swift 3 & 4

for case let button as UIButton in self.view.subviews {
    button.setTitleForAllStates("")
}

Answer 3

Looping over subview works, but it's sometimes a little ugly, and has other issues.

If you need to loop over some specific buttons, for example to add corner radius or change tint or background color, you can use an array of IBOutlets and then loop over that.

var buttons = [SkipBtn, AllowBtn]
for button in buttons as! [UIButton] {
    button.layer.cornerRadius = 5
}