iOS UIView设置圆角

时间:2023-03-09 15:39:20
iOS UIView设置圆角

UIView设置圆角

1、比较简单的情况,UIView四个角都是圆角:

    UIView *aView = [[UIView alloc] init];

    aView.frame = CGRectMake(, , , );
aView.backgroundColor = [UIColor redColor]; //设置圆角边框 aView.layer.cornerRadius = ; aView.layer.masksToBounds = YES; //设置边框及边框颜色 aView.layer.borderWidth = ; aView.layer.borderColor =[ [UIColor grayColor] CGColor]; [self.view addSubview:aView];

2、设置四个角中的某个或者某几个为圆角

    UIView *aView = [[UIView alloc] init];

    aView.frame = CGRectMake(, , , );
aView.backgroundColor = [UIColor redColor]; [self.view addSubview:aView]; //设置所需的圆角位置以及大小
UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:aView.bounds byRoundingCorners:UIRectCornerBottomLeft | UIRectCornerBottomRight cornerRadii:CGSizeMake(, )];
CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
maskLayer.frame = aView.bounds;
maskLayer.path = maskPath.CGPath;
aView.layer.mask = maskLayer;

其中,UIRectCornerBottomLeft,UIRectCornerBottomRight是可以选择的角。

typedef NS_OPTIONS(NSUInteger, UIRectCorner) {
UIRectCornerTopLeft = << ,
UIRectCornerTopRight = << ,
UIRectCornerBottomLeft = << ,
UIRectCornerBottomRight = << ,
UIRectCornerAllCorners = ~0UL
};

上面的枚举是可以供选择的角,分别是:“左上角”、“右上角”、“左下角”、“右下角”。