Fitting a UIImage in UIImageView

Question

I need to resize my UIImage according to the size of UIImageView. My image is too small, so i need to scale it up. I was not able to do it using:

self.firstImage.contentMode = UIViewContentModeScaleAspectFit;

Please help.

Answer 1

You just need to set the frame of your UIImageView and set the contentMode to one of the resizing options.

Or you can use this utility method, if you actually need to resize an image:

+ (UIImage *)imageWithImage:(UIImage *)image scaledToSize:(CGSize)newSize {
    //UIGraphicsBeginImageContext(newSize);
    UIGraphicsBeginImageContextWithOptions(newSize, NO, 0.0);
    [image drawInRect:CGRectMake(0, 0, newSize.width, newSize.height)];
    UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();    
    UIGraphicsEndImageContext();
    return newImage;
}

Or look at these links :

http://nanostuffs.com/Blog/?p=586

http://www.abdus.me/ios-programming-tips/resize-image-in-ios/

Answer 2

In Swift 3.0 , it will be

func imageWithImage(image:UIImage, scaledToSize newSize:CGSize ) -> UIImage {

    UIGraphicsBeginImageContextWithOptions(newSize, false, 0.0)
    image.draw(in: CGRect(x: 0, y: 0, width: newSize.width, height: newSize.width))
    let newImage : UIImage  = UIGraphicsGetImageFromCurrentImageContext()!
    UIGraphicsEndImageContext();
    return newImage;

}

Answer 3

Please follow below link. Hope you will get solution.

How to use UIImageView Content Mode ?

Thanks.

Answer 4

try with this:

self.imageView.contentMode   = UIViewContentModeScaleAspectFill;
self.imageView.clipsToBounds = YES;