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swift ways to setup constraints

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Lucky Lapwing answered on February 13, 2021 Popularity 9/10 Helpfulness 6/10

answer swift ways to setup constraints

related swift constraints programmatically

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related Type Constraints Swift

swift ways to setup constraints

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//https://stackoverflow.com/a/26181982/13171606
//There are multiple ways to add contraints, please open Link for almost ecery type of constraint

override func viewDidLoad() {
    let newView = UIView()
    newView.backgroundColor = UIColor.red
  
    view.addSubview(newView)
    
    newView.translatesAutoresizingMaskIntoConstraints = false//compulsory
    newView.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
    newView.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true
    newView.widthAnchor.constraint(equalToConstant: 100).isActive = true
    newView.heightAnchor.constraint(equalToConstant: 100).isActive = true
}

Popularity 9/10 Helpfulness 6/10 Language swift

Source: stackoverflow.com

Tags: constraints swift

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Contributed on Feb 13 2021

Lucky Lapwing

0 Answers Avg Quality 2/10

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swift constraints programmatically

Comment

fileprivate func setupName() { 

    lblName.text = "Hello world"

    // Step 1
    lblName.translatesAutoresizingMaskIntoConstraints = false

    //Step 2
    self.view.addSubview(lblName)

    //Step 3
    NSLayoutConstraint.activate([
        lblName.centerXAnchor.constraint(equalTo: self.view.centerXAnchor),
        lblName.centerYAnchor.constraint(equalTo: self.view.centerYAnchor)
    ])
}

Popularity 8/10 Helpfulness 4/10 Language typescript

Source: stackoverflow.com

Tags: constraints cons

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Contributed on Jun 04 2021

Happy Hyena

0 Answers Avg Quality 2/10

swift constraints programmatically

Comment

import UIKit

class ViewController: UIViewController {

override func viewDidLoad() {
super.viewDidLoad()

let myImageView:UIImageView = UIImageView()
myImageView.backgroundColor = UIColor.red
myImageView.image = UIImage(named:"sample_dog")!
myImageView.translatesAutoresizingMaskIntoConstraints = false
myImageView.layer.borderColor = UIColor.red.cgColor
myImageView.layer.borderWidth = 10
self.view.addSubview(myImageView)
        
view.removeConstraints(view.constraints)


view.addConstraint(NSLayoutConstraint(
item: myImageView,
attribute: .top,
relatedBy: .equal,
toItem: view,
attribute: .top,
multiplier: 1,
constant:100)
    
)

view.addConstraint(NSLayoutConstraint(
item: myImageView,
attribute: .centerX,
relatedBy: .equal,
toItem: view,
attribute: .centerX,
multiplier: 1,
constant:0)
)
    
view.addConstraint(NSLayoutConstraint(
item: myImageView,
attribute: .height,
relatedBy: .equal,
toItem: view,
attribute: .width,
multiplier: 0.5,
constant:40))
    
view.addConstraint(NSLayoutConstraint(
item: myImageView,
attribute: .width,
relatedBy: .equal,
toItem: view,
attribute: .width,
multiplier: 0.5,
constant:40))
    
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
}
}

Popularity 8/10 Helpfulness 2/10 Language typescript

Source: stackoverflow.com

Tags: constraints programmatically progra

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Contributed on Jun 04 2021

Happy Hyena

0 Answers Avg Quality 2/10

swift constraints programmatically

Comment

 /*
// regular use
1.leftAnchor
2.rightAnchor
3.topAnchor
// intermediate use
4.widthAnchor
5.heightAnchor
6.bottomAnchor
7.centerXAnchor
8.centerYAnchor
// rare use
9.leadingAnchor
10.trailingAnchor
etc. (note: very project to project)
*/

Popularity 7/10 Helpfulness 1/10 Language typescript

Source: stackoverflow.com

Tags: constraints programmatically programmatic

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Contributed on Jun 04 2021

Happy Hyena

0 Answers Avg Quality 2/10

swift constraints

Comment

 - firstView.coverWholeSuperview()
 - firstView.constraints(size: CGSize(width: 44, height: 44), centerX: view.centerXAnchor, centerY: view.centerXAnchor)
 - firstView.constraints(top: view.topAnchor, 
                         leading: secondView.leadingAnchor, 
                         bottom: view.bottomAnchor, 
                         trailing: secondView.trailingAnchor, 
                         padding: UIEdgeInsets(top: 12, left: 12, bottom: 12, right: 12))

Popularity 8/10 Helpfulness 1/10 Language swift

Source: stackoverflow.com

Tags: constraints cons

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Contributed on Jun 08 2021

Happy Hyena

0 Answers Avg Quality 2/10

Type Constraints Swift

Comment

//create a generic function with type constraint
func addition<T: Numeric>(num1: T, num2: T) {

  print("Sum:", num1 + num2)
}

// pass Int value
addition(num1: 5, num2: 10)

// pass Double value
addition(num1: 5.5, num2: 10.8)

Popularity 3/10 Helpfulness 1/10 Language swift

Source: Grepper

Tags: swift type-constraints

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Contributed on Jun 16 2022

SAMER SAEID

0 Answers Avg Quality 2/10

swift ways to setup constraints

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