How to invoke [self new] in Swift

Question

Here is an UIView extension written in ObjectiveC to easily create view for using Auto-layout:

+(id)autolayoutView
{
    UIView *view = [self new];
    view.translatesAutoresizingMaskIntoConstraints = NO;
    return view;
}

it invokes [self new] so any subclass of UIView can use this method. How can I achieve this in Swift?

Answer 1

OK, this appears to be the solution. The type must have a required initializer with the correct parameter list (in this case no parameters).

class SubView: UIView {
    override required init() {
        super.init()
    }

    required init(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }

    class func autolayoutView() -> UIView {
        var view = self()
        view.setTranslatesAutoresizingMaskIntoConstraints(false)
        return view
    }
}