How do I center a UIActivityIndicatorView programmatically in Swift?

Question

I want to place my activity indicator in the centre of my table view controller programmatically but when I run my code it always appears in the top left hand corner.

Here is my swift code;

let activityIndicator: UIActivityIndicatorView = {
    let activityIndicator = UIActivityIndicatorView()
    activityIndicator.style = .large
    activityIndicator.hidesWhenStopped = true
    activityIndicator.color = .white
    activityIndicator.startAnimating()
    return activityIndicator
}()

tableView.addSubview(activityIndicator)
    
NSLayoutConstraint.activate([
    activityIndicator.centerXAnchor.constraint(equalTo: tableView.centerXAnchor),
    activityIndicator.centerYAnchor.constraint(equalTo: tableView.centerYAnchor)
])
    
tableView.layoutSubviews()

Not sure what you mean. You can always override that method in your view controller, stackoverflow.com/a/35097218/2303865 — Leo Dabus
– Leo Dabus, Commented Mar 2, 2022 at 20:23

Dinesh · Accepted Answer · 2022-03-03 05:30:12Z

1

You need to set activityIndicator.translatesAutoresizingMaskIntoConstraints = false

  lazy var activityIndicator: UIActivityIndicatorView = {
    let activityIndicator = UIActivityIndicatorView()
    activityIndicator.style = .large
    activityIndicator.translatesAutoresizingMaskIntoConstraints = false
    activityIndicator.hidesWhenStopped = true
    activityIndicator.color = .white
    activityIndicator.startAnimating()
    return activityIndicator
}()

answered Mar 3, 2022 at 5:30

Dinesh

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Comments

Stephen501 · Accepted Answer · 2022-03-03 17:33:43Z

0

I needed to include the line;

activityIndicator.translatesAutoresizingMaskIntoConstraints = false

answered Mar 3, 2022 at 17:33

Stephen501

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1 Comment

Shawn Frank Over a year ago

Isn't that what the answer by Dinesh suggested ? If that is what helped you, you should probably accept his answer.

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