imageView添加阴影和边框

//    //给imageView添加阴影和边框
//    UIImageView*imgvPhoto = [[UIImageView alloc] init];
    //添加边框
    CALayer *layer = [imageView layer];
    layer.borderColor = [UIColor whiteColor].CGColor;
    layer.borderWidth = 5.0f;
    //添加四个边阴影
    imageView.layer.shadowColor = [UIColor blackColor].CGColor;
    imageView.layer.shadowOffset = CGSizeMake(0,0);
    imageView.layer.shadowOpacity = 0.5;
    imageView.layer.shadowRadius = 10.0;//给imageview添加阴影和边框
    //添加两个边的阴影
    imageView.layer.shadowColor = [UIColor blackColor].CGColor;
    imageView.layer.shadowOffset = CGSizeMake(4,4);
    imageView.layer.shadowOpacity = 0.5;
    imageView.layer.shadowRadius=2.0;