Make image smaller inside UIImageView - objective-c

Question

I have an UIImageView that shows and image of a creditCard, My problem is that I want to make boarders around it, so the credit card wont touch the edges of the UIimageView, I dont want to change the UIImageView position on the screen so what can I do ?
image 1
image 2
( unlike the example of the blue card it dosnt have to leave spaces only from the sides, it could shrink it from all sides )

Answer 1

You basically have (3) three options that can fix this.
Adjust the UIViewContentMode contentMode of the UIImageView so that it appropriately displays the image (this will only work however if the image you are using scales to fit without touching the border.
Use a UIButton instead and simply adjust the image insets until your satisfied (just disable the button or set user interaction to no here to "mimic" an image view)
Create a wrapper method that creates a new image to your desired size. Something like this should work just fine
CGSize size = CGSizeMake(< some width > , < some height >);
Then just create a new image capture with the size you've chosen
CGFloat scale = MAX(size.width/image.size.width, size.height/image.size.height);
CGFloat width = image.size.width * scale;
CGFloat height = image.size.height * scale;
CGRect imageRect = CGRectMake((size.width - width)/2.0f,
(size.height - height)/2.0f,
width,
height);
UIGraphicsBeginImageContextWithOptions(size, NO, 0);
[image drawInRect:imageRect];
UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return newImage;
From here you should then be able to just apply a border width and color to get your desired result!
I guess a fourth (4th) option could be manually shrinking the image (with some photo editor) so that it renders (fits) into your image view with the appropriate padding around the image. I think the others are easier and best practice though.