Getting width and height of image from UIImageView after aspect fit
1
I'm trying to get the width and height of an image from UIImageView after it gets scaled to aspect fit. This is how I got its width and height:
let imageHeight = AVMakeRect(aspectRatio: (transferImage.size), insideRect: imageView.frame).height
let imageWidth = AVMakeRect(aspectRatio: (transferImage.size), insideRect: imageView.frame).width
let imageYposition = AVMakeRect(aspectRatio: (transferImage.size), insideRect: imageView.frame).origin.y
let imageXposition = AVMakeRect(aspectRatio: (transferImage.size), insideRect: imageView.frame).origin.x
Apparently, this gives me the width and height. However, after trying to size an UIView to the same dimensions, they are not the same size. This is how I set the UIView to the width and height of the image:
boundariesRectangle.frame = CGRect(x: imageXposition, y: imageYposition, width: imageWidth, height: imageHeight)
This is what happens:
swift
edited Nov 25 '18 at 17:01
Code Different
48k776112
asked Nov 25 '18 at 9:25
M. ZhongM. Zhong
61
add a comment |
1
I'm trying to get the width and height of an image from UIImageView after it gets scaled to aspect fit. This is how I got its width and height:
let imageHeight = AVMakeRect(aspectRatio: (transferImage.size), insideRect: imageView.frame).height
let imageWidth = AVMakeRect(aspectRatio: (transferImage.size), insideRect: imageView.frame).width
let imageYposition = AVMakeRect(aspectRatio: (transferImage.size), insideRect: imageView.frame).origin.y
let imageXposition = AVMakeRect(aspectRatio: (transferImage.size), insideRect: imageView.frame).origin.x
Apparently, this gives me the width and height. However, after trying to size an UIView to the same dimensions, they are not the same size. This is how I set the UIView to the width and height of the image:
boundariesRectangle.frame = CGRect(x: imageXposition, y: imageYposition, width: imageWidth, height: imageHeight)
This is what happens:
swift
edited Nov 25 '18 at 17:01
Code Different
48k776112
asked Nov 25 '18 at 9:25
M. ZhongM. Zhong
61
You can set it manually in your storyboard. It's easier that way
– Alex Tănăsescu
Nov 25 '18 at 9:27
add a comment |
1
1
1
0
I'm trying to get the width and height of an image from UIImageView after it gets scaled to aspect fit. This is how I got its width and height:
let imageHeight = AVMakeRect(aspectRatio: (transferImage.size), insideRect: imageView.frame).height
let imageWidth = AVMakeRect(aspectRatio: (transferImage.size), insideRect: imageView.frame).width
let imageYposition = AVMakeRect(aspectRatio: (transferImage.size), insideRect: imageView.frame).origin.y
let imageXposition = AVMakeRect(aspectRatio: (transferImage.size), insideRect: imageView.frame).origin.x
Apparently, this gives me the width and height. However, after trying to size an UIView to the same dimensions, they are not the same size. This is how I set the UIView to the width and height of the image:
boundariesRectangle.frame = CGRect(x: imageXposition, y: imageYposition, width: imageWidth, height: imageHeight)
This is what happens:
swift
edited Nov 25 '18 at 17:01
Code Different
48k776112
asked Nov 25 '18 at 9:25
M. ZhongM. Zhong
61
I'm trying to get the width and height of an image from UIImageView after it gets scaled to aspect fit. This is how I got its width and height:
let imageHeight = AVMakeRect(aspectRatio: (transferImage.size), insideRect: imageView.frame).height
let imageWidth = AVMakeRect(aspectRatio: (transferImage.size), insideRect: imageView.frame).width
let imageYposition = AVMakeRect(aspectRatio: (transferImage.size), insideRect: imageView.frame).origin.y
let imageXposition = AVMakeRect(aspectRatio: (transferImage.size), insideRect: imageView.frame).origin.x
Apparently, this gives me the width and height. However, after trying to size an UIView to the same dimensions, they are not the same size. This is how I set the UIView to the width and height of the image:
boundariesRectangle.frame = CGRect(x: imageXposition, y: imageYposition, width: imageWidth, height: imageHeight)
This is what happens:
swift
swift
edited Nov 25 '18 at 17:01
Code Different
48k776112
asked Nov 25 '18 at 9:25
M. ZhongM. Zhong
61
edited Nov 25 '18 at 17:01
Code Different
48k776112
asked Nov 25 '18 at 9:25
M. ZhongM. Zhong
61
edited Nov 25 '18 at 17:01
Code Different
48k776112
edited Nov 25 '18 at 17:01
Code Different
48k776112
edited Nov 25 '18 at 17:01
Code Different
48k776112
48k776112
asked Nov 25 '18 at 9:25
M. ZhongM. Zhong
61
asked Nov 25 '18 at 9:25
M. ZhongM. Zhong
61
asked Nov 25 '18 at 9:25
M. ZhongM. Zhong
61
61
You can set it manually in your storyboard. It's easier that way
– Alex Tănăsescu
Nov 25 '18 at 9:27
add a comment |
You can set it manually in your storyboard. It's easier that way
– Alex Tănăsescu
Nov 25 '18 at 9:27
You can set it manually in your storyboard. It's easier that way
– Alex Tănăsescu
Nov 25 '18 at 9:27
You can set it manually in your storyboard. It's easier that way
– Alex Tănăsescu
Nov 25 '18 at 9:27
add a comment |
1 Answer
1
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oldest
votes
0
Try this:
guard let image = imageView.image else { return }
// Calculate the scaled size of the image
let scaledRect = AVMakeRect(aspectRatio: image.size, insideRect: imageView.bounds)
// Create the overlay view
let overlayView = UIView(frame: .zero)
overlayView.backgroundColor = UIColor.red.withAlphaComponent(0.5)
overlayView.translatesAutoresizingMaskIntoConstraints = false
// Add the overlay
// To use relate 2 views by auto-layout constraints, they must have the
// same parent view
imageView.superView!.addSubview(overlayView)
overlayView.widthAnchor.constraint(equalToConstant: scaledRect.width).isActive = true
overlayView.heightAnchor.constraint(equalToConstant: scaledRect.height).isActive = true
overlayView.centerXAnchor.constraint(equalTo: imageView.centerXAnchor).isActive = true
overlayView.centerYAnchor.constraint(equalTo: imageView.centerYAnchor).isActive = true
answered Nov 25 '18 at 17:55
Code DifferentCode Different
48k776112
Still not the same size. This is what it looks like: imgur.com/a/Rhkra8k
– M. Zhong
Nov 26 '18 at 1:05
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
Try this:
guard let image = imageView.image else { return }
// Calculate the scaled size of the image
let scaledRect = AVMakeRect(aspectRatio: image.size, insideRect: imageView.bounds)
// Create the overlay view
let overlayView = UIView(frame: .zero)
overlayView.backgroundColor = UIColor.red.withAlphaComponent(0.5)
overlayView.translatesAutoresizingMaskIntoConstraints = false
// Add the overlay
// To use relate 2 views by auto-layout constraints, they must have the
// same parent view
imageView.superView!.addSubview(overlayView)
overlayView.widthAnchor.constraint(equalToConstant: scaledRect.width).isActive = true
overlayView.heightAnchor.constraint(equalToConstant: scaledRect.height).isActive = true
overlayView.centerXAnchor.constraint(equalTo: imageView.centerXAnchor).isActive = true
overlayView.centerYAnchor.constraint(equalTo: imageView.centerYAnchor).isActive = true
answered Nov 25 '18 at 17:55
Code DifferentCode Different
48k776112
Still not the same size. This is what it looks like: imgur.com/a/Rhkra8k
– M. Zhong
Nov 26 '18 at 1:05
add a comment |
0
Try this:
guard let image = imageView.image else { return }
// Calculate the scaled size of the image
let scaledRect = AVMakeRect(aspectRatio: image.size, insideRect: imageView.bounds)
// Create the overlay view
let overlayView = UIView(frame: .zero)
overlayView.backgroundColor = UIColor.red.withAlphaComponent(0.5)
overlayView.translatesAutoresizingMaskIntoConstraints = false
// Add the overlay
// To use relate 2 views by auto-layout constraints, they must have the
// same parent view
imageView.superView!.addSubview(overlayView)
overlayView.widthAnchor.constraint(equalToConstant: scaledRect.width).isActive = true
overlayView.heightAnchor.constraint(equalToConstant: scaledRect.height).isActive = true
overlayView.centerXAnchor.constraint(equalTo: imageView.centerXAnchor).isActive = true
overlayView.centerYAnchor.constraint(equalTo: imageView.centerYAnchor).isActive = true
answered Nov 25 '18 at 17:55
Code DifferentCode Different
48k776112
Still not the same size. This is what it looks like: imgur.com/a/Rhkra8k
– M. Zhong
Nov 26 '18 at 1:05
add a comment |
0
0
0
Try this:
guard let image = imageView.image else { return }
// Calculate the scaled size of the image
let scaledRect = AVMakeRect(aspectRatio: image.size, insideRect: imageView.bounds)
// Create the overlay view
let overlayView = UIView(frame: .zero)
overlayView.backgroundColor = UIColor.red.withAlphaComponent(0.5)
overlayView.translatesAutoresizingMaskIntoConstraints = false
// Add the overlay
// To use relate 2 views by auto-layout constraints, they must have the
// same parent view
imageView.superView!.addSubview(overlayView)
overlayView.widthAnchor.constraint(equalToConstant: scaledRect.width).isActive = true
overlayView.heightAnchor.constraint(equalToConstant: scaledRect.height).isActive = true
overlayView.centerXAnchor.constraint(equalTo: imageView.centerXAnchor).isActive = true
overlayView.centerYAnchor.constraint(equalTo: imageView.centerYAnchor).isActive = true
answered Nov 25 '18 at 17:55
Code DifferentCode Different
48k776112
Try this:
guard let image = imageView.image else { return }
// Calculate the scaled size of the image
let scaledRect = AVMakeRect(aspectRatio: image.size, insideRect: imageView.bounds)
// Create the overlay view
let overlayView = UIView(frame: .zero)
overlayView.backgroundColor = UIColor.red.withAlphaComponent(0.5)
overlayView.translatesAutoresizingMaskIntoConstraints = false
// Add the overlay
// To use relate 2 views by auto-layout constraints, they must have the
// same parent view
imageView.superView!.addSubview(overlayView)
overlayView.widthAnchor.constraint(equalToConstant: scaledRect.width).isActive = true
overlayView.heightAnchor.constraint(equalToConstant: scaledRect.height).isActive = true
overlayView.centerXAnchor.constraint(equalTo: imageView.centerXAnchor).isActive = true
overlayView.centerYAnchor.constraint(equalTo: imageView.centerYAnchor).isActive = true
answered Nov 25 '18 at 17:55
Code DifferentCode Different
48k776112
answered Nov 25 '18 at 17:55
Code DifferentCode Different
48k776112
answered Nov 25 '18 at 17:55
Code DifferentCode Different
48k776112
answered Nov 25 '18 at 17:55
Code DifferentCode Different
48k776112
48k776112
Still not the same size. This is what it looks like: imgur.com/a/Rhkra8k
– M. Zhong
Nov 26 '18 at 1:05
add a comment |
Still not the same size. This is what it looks like: imgur.com/a/Rhkra8k
– M. Zhong
Nov 26 '18 at 1:05
Still not the same size. This is what it looks like: imgur.com/a/Rhkra8k
– M. Zhong
Nov 26 '18 at 1:05
Still not the same size. This is what it looks like: imgur.com/a/Rhkra8k
– M. Zhong
Nov 26 '18 at 1:05
add a comment |
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You can set it manually in your storyboard. It's easier that way
– Alex Tănăsescu
Nov 25 '18 at 9:27