Loop to create UIImageView and Labels in Swift-CodePudding

Hello!

I have a homework in which I need to using a loop, generate four UIImageViews and 16 labels on the screen as shown in the picture(no additional elements need to be generated).

So, generally, I think I understand how to do it, but I have some questions: I need to use a for i in 0 ... 3 loop in which I say that var image = UIImageView ()?

var currentY: CGFloat = 0
    let width: CGFloat = 375
    let height: CGFloat = 100
    var images = [UIImage] ()


while i <4 {

if i = 1 {



var currentY: CGFloat   10
    let width: CGFloat = 375
    let height: CGFloat = 100
    var images = [UIImage] ()
i   = 1

}

if i = 2 {

var currentY: CGFloat   10
    let width: CGFloat = 375
    let height: CGFloat = 100
    var images = [UIImage] ()
}

Like that? It's not a code as I see it, more of a pseudo-code to gather my thoughts into at least something)
To place elements on the screen, I need to give them coordinates on the screen, should I put these coordinates into variables and change them with some step?Like each time you enter the loop add 10 to all coordinates?
For each number do I need to do my own piece of code? like if = 1 then if equal to 2 then ...

Thank you!

CodePudding user response：

You can do this by two for loop. First FOR loop is for each row and the second FOR loop is for setting each row image view.

var y: CGFloat = 0.0
var height: CGFloat = 200.0
var width: CGFloat = 150.0

for _ in 0...2 {
    var x: CGFloat = 0.0
    for _ in 0...2 {
       let imgView = UIImageView()
       imgView.frame = CGRect(x: x, y: y, width: width, height: height)
       self.view.addSubView(imgView)
       x = x   width
    }
    y = y   height
}

CodePudding user response：

thats the full answer :)

 func loop() {
    var y: CGFloat = 0.0
    let height: CGFloat = 200
    let width: CGFloat = 180
    var x:CGFloat = 0.0
    let colorsss:[UIColor] = [.purple,.blue,.brown,.cyan]
    var image = UIImageView()
    for i in 0...3 {
        image = UIImageView(frame: CGRect(x: x, y: y, width: width, height: height))
        image.backgroundColor = colorsss[i]
        view.subviews(image)
        var label = UILabel()
        let colors:[UIColor] = [.red,.yellow,.orange,.black]
        for i in 0...3 {
            if i == 3 {
                label = UILabel(frame: CGRect(x: width - width / 4, y: 180, width: width / 4 - CGFloat(i), height: 20))
                label.backgroundColor = colors[i]
                image.subviews(label)
            } else {
                label = UILabel(frame: CGRect(x: 0, y: 120   (i * 20), width: Int(width / 4 - CGFloat(i)), height: 20))
                label.backgroundColor = colors[i]
                image.subviews(label)
            }
            
        }
        if i == 0 {
            x = x   width
        } else if i == 1 {
            y = y   height
            x = 0
        } else  {
            x = x   width
            y = height
        }
    }
}