layer图层常见属性

把layer常见图层属性总结了一下^-^欢迎大家讨论~~~~来吧 ，代码属性

#import "CZViewController.h"

@interface CZViewController ()

@property (nonatomic, strong) UIView *myView;
@property (nonatomic, strong) UIImageView *imageView;

@end

@implementation CZViewController

- (UIImageView *)imageView
{
    if (_imageView == nil) {
        _imageView = [[UIImageView alloc] initWithFrame:CGRectMake(110, 100, 100, 100)];
        _imageView.image = [UIImage imageNamed:@"头像1"];

        _imageView.backgroundColor = [UIColor redColor];

        [self.view addSubview:_imageView];
    }
    return _imageView;
}

- (UIView *)myView
{
    if (_myView == nil) {
        _myView = [[UIView alloc] initWithFrame:CGRectMake(110, 100, 100, 100)];
        _myView.backgroundColor = [UIColor redColor];

        [self.view addSubview:_myView];
    }
    return _myView;
}

- (void)viewDidLoad
{
    [super viewDidLoad];

    self.view.backgroundColor = [UIColor lightGrayColor];

    [self imageView];

    // 1. 阴影效果，在CA框架中不能直接使用UIKit的数据类型
    //阴影颜色
    self.imageView.layer.shadowColor = [UIColor yellowColor].CGColor;
    //阴影偏移点
//    self.myView.layer.shadowOffset = CGSizeMake(-10, 10);
    //阴影半径
    self.imageView.layer.shadowRadius = 10.0;
    // 图层中的Opacity相当于view的alpha属性
    self.imageView.layer.shadowOpacity = 1.0;

    // 2. 圆角半径
    // 类似于clip，使用masksToBounds阴影效果无效
    self.imageView.layer.masksToBounds = YES;
    //图层的圆角半径
    self.imageView.layer.cornerRadius = 50.0;

    // 3. 边框 颜色
    self.imageView.layer.borderColor = [UIColor whiteColor].CGColor;
    //边线宽度
    self.imageView.layer.borderWidth = 5.0;
}

- (void)viewLayerDemo
{
    // 1. 阴影效果，在CA框架中不能直接使用UIKit的数据类型
    self.myView.layer.shadowColor = [UIColor yellowColor].CGColor;
    //    self.myView.layer.shadowOffset = CGSizeMake(-10, 10);
    self.myView.layer.shadowRadius = 10.0;
    // 图层中的Opacity相当于view的alpha属性
    self.myView.layer.shadowOpacity = 1.0;

    // 2. 圆角半径
    self.myView.layer.cornerRadius = 50.0;

    // 3. 边框
    self.myView.layer.borderColor = [UIColor whiteColor].CGColor;
    self.myView.layer.borderWidth = 5.0;
}

@end

    // 设置圆角半径
    _imageView.layer.cornerRadius = 75;
    // 阴影半径
//    _imageView.layer.shadowRadius = 75;
    // 阴影颜色
    _imageView.layer.shadowColor = [UIColor yellowColor].CGColor;
    // 阴影偏移位
    _imageView.layer.shadowOffset = CGSizeMake( -10, 10);
    // 阴影不透明度(0~1)默认是0
    _imageView.layer.shadowOpacity = 1;
    // 超出主层时添加蒙板遮盖
    _imageView.layer.masksToBounds = YES;
    // 裁剪超出边界的内容
//    _imageView.clipsToBounds = YES;
    // 边框线宽
    _imageView.layer.borderWidth = 2;
    // 边框颜色
    _imageView.layer.borderColor = [UIColor blueColor].CGColor;
//    CGRect imageVF = CGRectMake(-5, -2, _imageView.bounds.size.width + 10, _imageView.bounds.size.height + 10);
    // 阴影(路径)或形状 系统会高点
//    _imageView.layer.shadowPath = CGPathCreateWithRect(imageVF, NULL);