ios - UIImagePickerController - 将图片裁剪成圆形

Question

如何使用图像选择器 Controller 裁剪圆形图像？

我在我的项目中显示的图片是圆形的，使用下面的代码

 CALayer *image = profileImageView.layer;
        [image  setCornerRadius:50];
        [image  setMasksToBounds:YES];

        [image setBorderColor:[[UIColor whiteColor]CGColor]];
        [image setBorderWidth:5];

到目前为止，我有这段代码可以裁剪图像，但它只会使它们变成正方形

   - (void)showPhotoLibary
    {
        if (([UIImagePickerController isSourceTypeAvailable:
              UIImagePickerControllerSourceTypeSavedPhotosAlbum] == NO)) {
            return;
        }

        UIImagePickerController *mediaUI = [[UIImagePickerController alloc] init];
        mediaUI.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;

        // Displays saved pictures from the Camera Roll album.
        mediaUI.mediaTypes = @[(NSString*)kUTTypeImage];

        // Hides the controls for moving & scaling pictures
        mediaUI.allowsEditing = YES;


        mediaUI.delegate = self;


        [self presentViewController:mediaUI animated:YES completion:nil];
    }


    - (void) imagePickerController: (
                                     UIImagePickerController *) picker didFinishPickingMediaWithInfo: (NSDictionary *) info {

        UIImage *originalImage = (UIImage *) [info objectForKey:UIImagePickerControllerOriginalImage];
        self.profileImageView.image = originalImage;



        [picker dismissViewControllerAnimated:YES completion:nil];

    }

Answer 1

进口#import <QuartzCore/QuartzCore.h>在你的.h文件中

   self.profileImageView.layer.cornerRadius = imageView.frame.size.width/2;  //or 20.0
   self.profileImageView.layer.masksToBounds = YES;