/Swift/Swift edit constraint programmatically

Swift edit constraint programmatically

yourHeightConstraintOutlet.constant = someValue
yourView.layoutIfNeeded()

Swift set constraint programmatically

override func viewDidLoad() {
    let newView = UIView()
    newView.backgroundColor = UIColor.red
    view.addSubview(newView)

    newView.translatesAutoresizingMaskIntoConstraints = false
    NSLayoutConstraint(item: newView, attribute: NSLayoutConstraint.Attribute.centerX, relatedBy: NSLayoutConstraint.Relation.equal, toItem: view, attribute: NSLayoutConstraint.Attribute.centerX, multiplier: 1, constant: 0).isActive = true
    NSLayoutConstraint(item: newView, attribute: NSLayoutConstraint.Attribute.centerY, relatedBy: NSLayoutConstraint.Relation.equal, toItem: view, attribute: NSLayoutConstraint.Attribute.centerY, multiplier: 1, constant: 0).isActive = true
    NSLayoutConstraint(item: newView, attribute: NSLayoutConstraint.Attribute.width, relatedBy: NSLayoutConstraint.Relation.equal, toItem: nil, attribute: NSLayoutConstraint.Attribute.notAnAttribute, multiplier: 1, constant: 100).isActive = true
    NSLayoutConstraint(item: newView, attribute: NSLayoutConstraint.Attribute.height, relatedBy: NSLayoutConstraint.Relation.equal, toItem: nil, attribute: NSLayoutConstraint.Attribute.notAnAttribute, multiplier: 1, constant: 100).isActive = true
}

Similar codes

1 vote128 views1 answer
Gap between table header uitableview
Swift
0 vote152 views1 answer
Change ui button swift
Swift
0 vote158 views2 answers
Save file with % swift
Swift
0 vote132 views1 answer
Get class name swift
Swift
1 vote128 views1 answer
Button sizetofit not working swift
Swift
0 vote151 views1 answer
How to name a variable of a specific type in swift
Swift
0 vote143 views1 answer
Get day difference between two dates swift
Swift
0 vote147 views1 answer
How to darken view swiftui
Swift
0 vote142 views1 answer
Swift file size from url
Swift
0 vote196 views1 answer
Navigationbarhidden not working swiftui
Swift