ios怎么让图片只有上半边圆角?
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+ (UIBezierPath *)bezierPathWithRoundedRect:(CGRect)rect
byRoundingCorners:(UIRectCorner)corners
cornerRadii:(CGSize)cornerRadii
参数corners指定了想要需要成为圆角的角。可选值为:
enum {
UIRectCornerTopLeft = 1 << 0,
UIRectCornerTopRight = 1 << 1,
UIRectCornerBottomLeft = 1 << 2,
UIRectCornerBottomRight = 1 << 3,
UIRectCornerAllCorners = ~0
};
typedef NSUInteger UIRectCorner;
从名字就能看出来其代表的意义。
例子:
UIView *view2 = [[UIView alloc] initWithFrame:CGRectMake(120, 10, 80, 80)];
view2.backgroundColor = [UIColor redColor];
[self.view addSubview:view2];
UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:view2.bounds byRoundingCorners:UIRectCornerBottomLeft | UIRectCornerBottomRight cornerRadii:CGSizeMake(10, 10)];
CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
maskLayer.frame = view2.bounds;
maskLayer.path = maskPath.CGPath;
view2.layer.mask = maskLayer;
CGContextRef context = UIGraphicsGetCurrentContext();
UIImage *your_image = [UIImage imageNamed: @"your_image_name"];
UIBezierPath *rectanglePath = [UIBezierPath bezierPathWithRoundedRect: CGRectMake(100, 100, 100, 100) byRoundingCorners: UIRectCornerTopLeft | UIRectCornerTopRight cornerRadii: CGSizeMake(5, 5)];
[rectanglePath closePath];
CGContextSaveGState(context);
[rectanglePath addClip];
[your_image drawInRect: CGRectMake(100, 100, your_image.size.width, your_image.size.height)];
CGContextRestoreGState(context);
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阿里云国际,腾讯云国际,低至75折。AWS 93折 免费开户实名账号 代冲值 优惠多多 微信号:monov8 飞机:@monov6 |