Programmatically change the height and width of a UIImageView Xcode Swift

Question

Hey for some reason I am struggling with trying to set the height and width of one of my image views. I want to set it so the height only goes for 20% of my screen. I know to regularly set it you can do things like: image = (0,0,50,50)

But I need the height to not be a static number. Something like image = (0,0, frame.height * 0.2, 50)

Any suggestions?

Savill

Answer 1

The accepted answer in Swift 3:

let screenSize: CGRect = UIScreen.main.bounds
image.frame = CGRect(x: 0, y: 0, width: 50, height: screenSize.height * 0.2)

Gambrell

man thank you the screen thing fixed imageView not abiding .scaleAspectFit rule – February

Answer 2

let screenSize: CGRect = UIScreen.mainScreen().bounds
image.frame = CGRectMake(0,0, screenSize.height * 0.2, 50)

Brantbrantford

You can do the above code this wayy too image.frame = CGRect(0,0, screenSize.height * 0.2, 50) The difference is that this way it looks more swift. CGRectMake is Objective-C style – Reconstruct

Answer 3

Using autoview

image.heightAnchor.constraint(equalToConstant: CGFloat(8)).isActive = true

Monobasic

it was a suitable answer for me – Wilk

Answer 4

Hey i figured it out shortly after. For some reason I was just having a brain fart.

image.frame = CGRectMake(0 , 0, self.view.frame.width, self.view.frame.height * 0.2)

Savill

Answer 5

A faster / alternative way to change the height and/or width of a UIView is by setting its width/height through frame.size:

let neededHeight = UIScreen.main.bounds.height * 0.2
yourView.frame.size.height = neededHeight

Person

Answer 6

u can use this code

var imageView = UIImageView(image: UIImage(name:"imageName"));
imageView.frame = CGrectMake(x,y imageView.frame.width*0.2,50);

or

var imageView = UIImageView(frame:CGrectMake(x,y, self.view.frame.size.width *0.2, 50)

Jackelinejackelyn

Answer 7

imageView is a subview of the main view. It works this way

image.frame = CGRectMake(0 , 0, super.view.frame.width, super.view.frame.height * 0.2)

Trichomonad