/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

0 vote1K views1 answer
Init with bindings swiftui
Swift
0 vote159 views6 answers
Free Robux codes
Swift
1 vote152 views1 answer
IOS 10.3.1 Simulator manually
Swift
2 votes181 views2 answers
Detect binding valu change swiftui
Swift
1 vote166 views1 answer
Use of undeclared identifier 'jsCodeLocation'
Swift
0 vote181 views1 answer
Swift resource exceeds maximum size
Swift
0 vote166 views2 answers
Rounded ios button
Swift
0 vote155 views2 answers
Get keyboard height swift
Swift
0 vote173 views2 answers
Cellwidget to setvalue
Swift
25 votes319 views6 answers
Markdown
Swift