iOS CornerRadius失效的解决方案

公众号iOS逆向

发布于 2021-07-29 16:12:04

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发布于 2021-07-29 16:12:04

文章被收录于专栏：iOS逆向与安全iOS逆向与安全

前言

效果图

在这里插入图片描述

I 、 iOS设置视图的cornerRadius属性失效的解决方案

1.1 解决步骤

1、尝试设置_numberLab.clipsToBounds = YES;2、尝试设置 [self.numberLab layoutIfNeeded]; 之后再执行cornerRadius

在设置完约束后, 并不能马上得到它的frame, 只要添加[self.view layoutIfNeeded]; 就能拿到frame设置圆角了


- (void)layoutSubviews{
    [super layoutSubviews];

    
    [self.numberLab layoutIfNeeded];

    [self.contentView bringSubviewToFront:self.numberLab];

    self.numberLab.layer.cornerRadius =self.numberLab.height*0.5;
}

3、尝试设置_numberLab.layer.masksToBounds = YES;

1.2、masksToBounds属性是什么？它有什么作用

masksToBounds指在设置子layer在超出父layer时是否被裁剪，YES表示裁剪，NO表示不裁剪，默认是NO；通常在通过设置layer.cornerRadius属性实现圆角效果时要设置masksToBounds为YES，以保证圆角效果的实现，但这种方法是一种很低效的实现方式，也是最简单直接的。
masksToBounds和clipsToBounds是不同的，前者指子layer层在超出父layer时是否被裁剪（masksToBounds是CALayer的属性），而后者指子view在超出父view时是否被裁剪（clipsToBounds是UIView的属性）。

1.3 只设置顶部的圆角

用法

- (void)layoutSubviews {
    [super layoutSubviews];
    [self.titleV layoutIfNeeded];
    
    [self.titleV setCornerOnTop:kAdjustRatio(20)];
    
}

setCornerOnTop:方法的实现

#pragma mark - Corner Radius

- (void)setCornerOnTop:(CGFloat)radius {
    UIBezierPath *maskPath;
    maskPath = [UIBezierPath bezierPathWithRoundedRect:self.bounds
                                     byRoundingCorners:(UIRectCornerTopLeft | UIRectCornerTopRight)
                                           cornerRadii:CGSizeMake(radius, radius)];
    CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
    maskLayer.frame = self.bounds;
    maskLayer.path = maskPath.CGPath;
    self.layer.mask = maskLayer;
}

- (void)setCornerOnBottom:(CGFloat)radius {
    UIBezierPath *maskPath;
    maskPath = [UIBezierPath bezierPathWithRoundedRect:self.bounds
                                     byRoundingCorners:(UIRectCornerBottomLeft | UIRectCornerBottomRight)
                                           cornerRadii:CGSizeMake(radius, radius)];
    CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
    maskLayer.frame = self.bounds;
    maskLayer.path = maskPath.CGPath;
    self.layer.mask = maskLayer;
}

- (void)setCornerOnLeft:(CGFloat)radius {
    UIBezierPath *maskPath;
    maskPath = [UIBezierPath bezierPathWithRoundedRect:self.bounds
                                     byRoundingCorners:(UIRectCornerTopLeft | UIRectCornerBottomLeft)
                                           cornerRadii:CGSizeMake(radius, radius)];
    CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
    maskLayer.frame = self.bounds;
    maskLayer.path = maskPath.CGPath;
    self.layer.mask = maskLayer;
}

- (void)setCornerOnRight:(CGFloat)radius {
    UIBezierPath *maskPath;
    maskPath = [UIBezierPath bezierPathWithRoundedRect:self.bounds
                                     byRoundingCorners:(UIRectCornerTopRight | UIRectCornerBottomRight)
                                           cornerRadii:CGSizeMake(radius, radius)];
    CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
    maskLayer.frame = self.bounds;
    maskLayer.path = maskPath.CGPath;
    self.layer.mask = maskLayer;
}

- (void)setCornerOnTopLeft:(CGFloat)radius {
    UIBezierPath *maskPath;
    maskPath = [UIBezierPath bezierPathWithRoundedRect:self.bounds
                                     byRoundingCorners:UIRectCornerTopLeft
                                           cornerRadii:CGSizeMake(radius, radius)];
    CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
    maskLayer.frame = self.bounds;
    maskLayer.path = maskPath.CGPath;
    self.layer.mask = maskLayer;
}

- (void)setCornerOnTopRight:(CGFloat)radius {
    UIBezierPath *maskPath;
    maskPath = [UIBezierPath bezierPathWithRoundedRect:self.bounds
                                     byRoundingCorners:UIRectCornerTopRight
                                           cornerRadii:CGSizeMake(radius, radius)];
    CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
    maskLayer.frame = self.bounds;
    maskLayer.path = maskPath.CGPath;
    self.layer.mask = maskLayer;
}

- (void)setCornerOnBottomLeft:(CGFloat)radius {
    UIBezierPath *maskPath;
    maskPath = [UIBezierPath bezierPathWithRoundedRect:self.bounds
                                     byRoundingCorners:UIRectCornerBottomLeft
                                           cornerRadii:CGSizeMake(radius, radius)];
    CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
    maskLayer.frame = self.bounds;
    maskLayer.path = maskPath.CGPath;
    self.layer.mask = maskLayer;
}

- (void)setCornerOnBottomRight:(CGFloat)radius {
    UIBezierPath *maskPath;
    maskPath = [UIBezierPath bezierPathWithRoundedRect:self.bounds
                                     byRoundingCorners:UIRectCornerBottomRight
                                           cornerRadii:CGSizeMake(radius, radius)];
    CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
    maskLayer.frame = self.bounds;
    maskLayer.path = maskPath.CGPath;
    self.layer.mask = maskLayer;
}

- (void)setAllCorner:(CGFloat)radius {
    UIBezierPath *maskPath;
    maskPath = [UIBezierPath bezierPathWithRoundedRect:self.bounds
                                          cornerRadius:radius];
    CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
    maskLayer.frame = self.bounds;
    maskLayer.path = maskPath.CGPath;
    self.layer.mask = maskLayer;
}

- (void)setCornerRadius:(CGFloat)radius {
    [self.layer setCornerRadius:radius];
    [self.layer setMasksToBounds:YES];
}

iOS CornerRadius失效的解决方案

iOS CornerRadius失效的解决方案

前言

I 、 iOS设置视图的cornerRadius属性失效的解决方案

1.1 解决步骤

1.2、masksToBounds属性是什么？它有什么作用

1.3 只设置顶部的圆角

see also

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