iOS - how to implement crop image like default photo album?

Question

The default crop function in iPhone photo album

enter image description here

Does any one know how to implement this? I want to crop it before Use button is tapped.

enter image description here

You can use following third party repository for this. Those provides UI for cropping and scaling photos in iPhone / iPod Touch apps. - [BJImageCropper](https://github.com/barrettj/BJImageCropper) - [SSPhotoCropperViewController](https://github.com/ardalahmet/SSPhotoCropperViewController) - [ImageCropper](https://github.com/iosdeveloper/ImageCropper) - [BFCropInterface](https://github.com/azzikid/BFCropInterface) A combination of [BJImageCropper](https://github.com/barrettj/BJImageCropper) and [SSPhotoCropperViewController](https://github.com/ardalahmet/SSPhotoCropperViewController) would be a — Meet Doshi, Feb 03 '16 at 11:12

score 9 · Answer 1 · answered May 20 '13 at 07:02

9

Try one of these:

https://www.cocoacontrols.com/search?utf8=%E2%9C%93&q=crop

You might find an open source that does exactly that

answered May 20 '13 at 07:02

Stavash

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Thanks, I've found a useful library, but there is a bug on image orientation on the library that I used – Js Lim May 21 '13 at 02:21
10

The life of an iOS developer is not an easy one :) – Stavash May 21 '13 at 06:56

score 5 · Answer 2 · answered May 20 '13 at 11:39

5

If I understand your question correctly, you want to present a UIImagePickerController with the ability to crop the picture before picking it. This is built-in into UIImagePickerController, just set the allowsEditing property to YES. See the documentation for more info http://developer.apple.com/library/ios/#documentation/uikit/reference/UIImagePickerController_Class/UIImagePickerController/UIImagePickerController.html.

answered May 20 '13 at 11:39

datwelk

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2

I know this property, unfortunately, it not allow me to specify the size to crop – Js Lim May 21 '13 at 02:19

score 2 · Answer 3 · answered May 20 '13 at 07:05

2

you can use this to crop the image.

CGRect rect = CGRectMake(some rect); 

CGImageRef imageRef = CGImageCreateWithImageInRect([urImageView.image CGImage], rect);
UIImage *cropedImage = [UIImage imageWithCGImage:imageRef];

answered May 20 '13 at 07:05

Bonnie

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score 0 · Answer 4 · answered Jul 16 '18 at 07:14

func cropImageZero(_ completionHandler: (_ img: UIImage)->()){
        let image = UIImage(named: "name")
        let rect = CGRect(x: 0, y: y, width: width, height: height)
        let cgImage = image?.cgImage!.cropping(to: rect)
        let imageNew = UIImage(cgImage: cgImage!)
        completionHandler(imageNew)
}

image cropping, in Swift 4,

Bonnie's answer is useful

iOS - how to implement crop image like default photo album?

4 Answers4

image cropping, in Swift 4,

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