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  • Crop UIImage in iOS

    @sukanya.upadhyay
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    Hello all !
    To crop an UIImage in iOS the following code can be used :-

     

    1.  - (void)viewDidLoad {
    2.     [super viewDidLoad];
    3.     
    4.    [_originalImage setImage:[UIImage imageNamed:@"Scenery.jpg"]];
    5.     
    6.     CGRect rect = CGRectMake(_originalImage.frame.size.width / 4, _originalImage.frame.size.height / 4 , (_originalImage.frame.size.width / 2), (_originalImage.frame.size.height / 2));
    7.    
    8.     CGImageRef imageRef = CGImageCreateWithImageInRect([_originalImage.image CGImage], rect);
    9.     
    10.     UIImage *img = [UIImage imageWithCGImage:imageRef];
    11.  
    12.     [_croppedImage setImage:img];
    13. }
    14.  

     

    In the above code, _originalImage is the outlet of the UIImageView in which the full image will be displayed and _croppedImage is the outlet on cropped image. We are setting a rectangle area from the original image. CGImageCreateWithImageInRect is used for creating bitmap image within the subregion of the existing image.

     

    The output will be as :-

     

     

                                    

    Crop Image UIImage ios xcode CGSize CGRect
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