iphone - how can i get the height and width of uiimage

Question

From the URL Image in Mail

I'm adding image to mail view. It will show full image. But I want to calculate, proportionally change the height and width of the image.

How can I get the height and width of UIImage?

Answer 1

let heightInPoints = image.size.height
let heightInPixels = heightInPoints * image.scale

let widthInPoints = image.size.width
let widthInPixels = widthInPoints * image.scale

Answer 2

Use the size property on the UIImage instance. See the documentation for more details.

Answer 3

UIImage *img = [UIImage imageNamed:@"logo.png"];

CGFloat width = img.size.width;
CGFloat height = img.size.height;

Answer 4

Some of the anwsers above, don't work well when rotating device.

Try:

CGRect imageContent = self.myUIImage.bounds;
CGFloat imageWidth = imageContent.size.width;
CGFloat imageHeight = imageContent.size.height;

Answer 5

UIImageView *imageView = [[[UIImageView alloc]initWithImage:[UIImage imageNamed:@"MyImage.png"]]autorelease];

NSLog(@"Size of my Image => %f, %f ", [[imageView image] size].width, [[imageView image] size].height) ;

Answer 6

let imageView: UIImageView = //this is your existing imageView

let imageViewHeight: CGFloat = imageView.frame.height

let imageViewWidth: CGFloat = imageView.frame.width

Answer 7

    import func AVFoundation.AVMakeRect

    let imageRect = AVMakeRect(aspectRatio: self.image!.size, insideRect: self.bounds)

    x = imageRect.minX

    y = imageRect.minY