How to crop the captured image before saving it in gallery in IOS

Question

I am working on camera app. I am capturing an image by using UIImagePickerController.After that before saving it in gallery I want to crop the image and need to save the cropped image in gallery.

I searched on google ,I found samples to pick the images from gallery and then cropping which is not my requirement.Could any body have worked on this??? If you have gone through any tutorials/sample code please post the links.Thanks in advance

Possible Duplicate http://stackoverflow.com/a/9529786/767730 — Anupdas, Mar 08 '13 at 06:37
after capturing the image its getting saved in gallery..@Brukhard — Satya Swaroop Basangi, Mar 08 '13 at 06:38
This has been incorrectly marked as a duplicate. The question refers to cropping the preview image that the iOS UIImagePickerController shows to the user before they save it. It also refers to capturing the image with the camera, so the answers below about the built in editing feature do not apply. — Lee Probert, Jul 23 '18 at 16:09

score 1 · Answer 1 · answered Mar 08 '13 at 06:38

1

pust isallowediting=yes; for picker so that we can edit image which you captured and selected from gallery also

UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    picker.delegate = self;
    picker.isallowediting = yes;

hope these will help you

answered Mar 08 '13 at 06:38

ganesh manoj

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what kind of editing does it allows??? cropping too???? – Satya Swaroop Basangi Mar 08 '13 at 06:40
ya after picking we will see one more screen with crop box from there we can pick the cropped image – ganesh manoj Mar 08 '13 at 06:43
1

picker.allowsEditing = true for Swift 3. – Alex Beals Feb 13 '17 at 22:33
Question refers to capturing the image with the camera, so this does not apply. – Lee Probert Jul 23 '18 at 16:10

score 0 · Answer 2 · edited Mar 06 '20 at 09:36

Use this code in imagePickerController method to crop your captured image. It's working fine for me.

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
    {
    [_imagePickerControllerInstance dismissModalViewControllerAnimated:YES];
        UIImage *_pickedAvatar = [info objectForKey:@"UIImagePickerControllerOriginalImage"];

       UIImage *croppedImage = [self cropImage:_pickedAvatar andFrame:CGRectMake(0, 0, 250, 250)];

   // croppedImage : U can use this cropped image for saving in gallery.

    }
- (UIImage *)cropImage:(UIImage*)image andFrame:(CGRect)rect {

   //Note : rec is nothing but the image frame which u want to crop exactly. 

    rect = CGRectMake(rect.origin.x*image.scale,
                      rect.origin.y*image.scale,
                      rect.size.width*image.scale,
                      rect.size.height*image.scale);

    CGImageRef imageRef = CGImageCreateWithImageInRect([image CGImage], rect);
    UIImage *result = [UIImage imageWithCGImage:imageRef
                                          scale:image.scale
                                    orientation:image.imageOrientation];
    CGImageRelease(imageRef);
    return result;
}

else

See this question.

Use UIImage category and use wherever you need to crop image.

@implementation UIImage (Crop)
    - (UIImage *)crop:(CGRect)rect {

        rect = CGRectMake(rect.origin.x*self.scale, 
                          rect.origin.y*self.scale, 
                          rect.size.width*self.scale, 
                          rect.size.height*self.scale);       

        CGImageRef imageRef = CGImageCreateWithImageInRect([self CGImage], rect);
        UIImage *result = [UIImage imageWithCGImage:imageRef 
                                              scale:self.scale 
                                        orientation:self.imageOrientation]; 
        CGImageRelease(imageRef);
        return result;
    }

@end

Question asks how to crop the preview image BEFORE the user commits to saving it. — Lee Probert, Jul 23 '18 at 16:10

How to crop the captured image before saving it in gallery in IOS

2 Answers2

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