Changing position of UIProgressView?

Question

I added a progress bar to my screen. I want it to be centered horizontally in my container, but I want to move it to the bottom of my screen. How do I edit the third line to change its position?

func addControls() {
    progressView = UIProgressView(progressViewStyle: UIProgressViewStyle.Default)
    progressView?.center = self.view.center
    view.addSubview(progressView!)
}

This will give you everything you need: https://developer.apple.com/documentation/uikit/uiview — Yevhen, Aug 17 '18 at 20:35
Yes, I have that - I just don't know how to structure the argument for the y-axis — edh, Aug 17 '18 at 20:45

score 0 · Answer 1 · answered Aug 17 '18 at 20:49

You could use NSLayoutConstraints and do something like this. The 3rd line being where you put the progress bar on top or beneath the other object.

    var otherObject = UIView()
    self.view.addSubview(progressView)
    let topConstraint = NSLayoutConstraint(item: progressView, attribute: .topMargin, relatedBy: .equal, toItem: otherObject, attribute: .bottomMargin, multiplier: 1, constant: 0)
    let leftConstraint = NSLayoutConstraint(item: progressView, attribute: .leftMargin, relatedBy: .equal, toItem: self.view, attribute: .leftMargin, multiplier: 1, constant: 0)
    let rightConstraint = NSLayoutConstraint(item: progressView, attribute: .rightMargin, relatedBy: .equal, toItem: self.view, attribute: .rightMargin, multiplier: 1, constant: 0)
    let bottomConstraint = NSLayoutConstraint(item: progressView, attribute: .bottomMargin, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1, constant: 50)
    self.view.addConstraints([topConstraint, leftConstraint, rightConstraint, bottomConstraint])

score 0 · Answer 2 · answered Aug 17 '18 at 21:45

0

That's really simple.

If you want to add a subview above another one, use this function:

func insertSubview(_ view: UIView, aboveSubview siblingSubview: UIView)

To add a subview below another one, use this function:

func insertSubview(_ view: UIView, belowSubview siblingSubview: UIView)

answered Aug 17 '18 at 21:45

Vin Gazoil

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Thanks, this is helpful! I don't really want to add it as a subview, though - I'd rather have it as a fixed location that just happens to be below another object on my screen. (The object above moves, so it's really just for the start.) – edh Aug 20 '18 at 14:22

Changing position of UIProgressView?

2 Answers2