ios,阴影

屏幕快照 2019-10-22 上午10.10.30.png

-(void)Shadow{
    UIImage *image = [UIImage imageNamed:@"0_wanggsx20080817.jpg"];
        UIImageView *imageView = [[UIImageView alloc]initWithImage:image];
        imageView.frame = CGRectMake(50, 100, 200, 300);
        //添加边框
        CALayer * layer = [imageView layer];
        layer.borderColor=[[UIColor redColor] CGColor];
        layer.borderWidth = 5.0f;
    
    //添加四个边阴影
    //    imageView.layer.shadowColor = [UIColor greenColor].CGColor;
    //    //阴影颜色
    //    imageView.layer.shadowOffset = CGSizeMake(0, 0);
    //    //偏移距离
    //    imageView.layer.shadowOpacity = 0.5;
    //    //不透明度
    //    imageView.layer.shadowRadius = 10.0;
    //半径
    //    //添加两个边阴影//
    imageView.layer.shadowColor = [UIColor blueColor].CGColor;
    //阴影颜色//
    imageView.layer.shadowOffset = CGSizeMake(-4, -4);//偏移距离//
      imageView.layer.shadowOpacity = 0.5;//不透明度//
      imageView.layer.shadowRadius = 2.0;//半径
    [self.view addSubview:imageView];
    
    
    
    
    imageView.layer.shadowColor = [UIColor blueColor].CGColor;
    //阴影颜色//
    imageView.layer.shadowOffset = CGSizeMake(-4, -4);//偏移距离//
      imageView.layer.shadowOpacity = 0.5;//不透明度//
      imageView.layer.shadowRadius = 2.0;//半径
    [self.view addSubview:imageView];

}