ios--UIImageView添加边框和阴影

- (void)viewDidLoad
{
[super viewDidLoad];
//添加显示
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];

}