Question

我使用此类别并为我的UITableView创建的图像大小相同。有没有办法让图像也有圆角？谢谢！

+ (UIImage *)scale:(UIImage *)image toSize:(CGSize)size
{
    UIGraphicsBeginImageContext(size);
    [image drawInRect:CGRectMake(0, 0, size.width, size.height)];
    UIImage *scaledImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return scaledImage;
}

编辑：然后我获取图像和其他对象信息，将其放入NSDictionary中以进入UITableView。我尝试在cellForRowAtIndexPath中更改UIImageView.layer属性，但它似乎没有做到这一点：

cell.TitleLabel.text = [dict objectForKey:@"Name"];
cell.CardImage.image = [dict objectForKey:@"Image"];
cell.CardImage.layer.cornerRadius = 5.0;

Answer 1

您可以向绘图操作添加剪裁，UIBezierPath类使这非常简单。

将代码扩展为：

+ (UIImage *)scale:(UIImage *)image toSize:(CGSize)size
{
    UIGraphicsBeginImageContext(size);
    CGRect rect = CGRectMake(0, 0, size.width, size.height);
    [[UIBezierPath bezierPathWithRoundeRect:rect cornerRadius:5] addClip];
    [image drawInRect:rect];
    UIImage *scaledImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return scaledImage;
}

Answer 2

试试这个

image.layer.cornerRadius = 5;

Answer 3

包含QuartzCore框架。
导入CALayer.h
image.layer.cornerFRadius = 5;

Answer 4

正如Sisu和the.evangelist所说：image.layer.cornerRadius = 5;

但您可能还需要添加：

[image.layer setMasksToBounds：YES];

UITableView中图像的圆角矩形/圆角

4 个答案: