How to control content mode of UIImageView?

Question

I have a UIImageView with some fixed rectangle size. But my images are not fixed in size. I want to display images according to the size of the UIImageView rect. Whether the image is large or large in resolution, it should be in a fixed form in accordance with the size of the UIImageView. I am confused about using below assets.

UIViewContentModeScaleToFill, UIViewContentModeScaleAspectFit, UIViewContentModeScaleAspectFill, UIViewContentModeRedraw 

What needs to be set in the auto-size mask? How do they behave?

Answer 1

Please try this code, hope it works for you.

set the UIImageView contentMode to UIViewContentModeScaleAspectFill , as shown below:

 imageView.contentMode = UIViewContentModeScaleAspectFill; 

install autoresizingMask from UIImageView as shown below:

 imageView.autoresizingMask = ( UIViewAutoresizingFlexibleBottomMargin | UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleWidth ); 

Answer 2

Here's a quick solution:

 let imageView = UIImageView(image: UIImage(named: "backgroundImage")) imageView.frame = tableView.frame imageView.contentMode = .ScaleAspectFill tableView.backgroundView = imageView 

Answer 3

If you want to make your UIImageView size in accordance with the ratio, then you must set it to UIViewContentModeScaleAspectFit

  yourimage.contentMode=UIViewContentModeScaleAspectFit; 

let me know if it works or not !!!

Happy coding.

Answer 4

In fast mode, you also set the content mode

 var newImgThumb : UIImageView newImgThumb = UIImageView(frame:CGRectMake(0, 0, 100, 70)) newImgThumb.contentMode = .ScaleAspectFit 

Answer 5

It is worth noting that swift 3 has changed as follows

. ScaleAspectFit to ScaleAspectFit

. ScaleAspectFill to. ScaleAspectFill

Answer 6

Hope this helps you.

 CGImageRef imageRef = CGImageCreateWithImageInRect([largeImage CGImage], cropRect); image = [UIImage imageWithCGImage:imageRef]]; CGImageRelease(imageRef); 

Answer 7

You just need these two lines:

 imageView.contentMode = UIViewContentModeScaleAspectFill; imageView.layer.clipsToBounds = YES; // Must do this or else image will overflow