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问题描述
我只想用最简单的方法在易于管理的 UIImageVies 下进行反射.
I just want the easiest way to make a reflection under a UIImageVies that is easily managable.
推荐答案正如菲尔所说,你可以有一个反射"的 UIImageView 实例:
As Phil says, you can have a "reflected" UIImageView instance:
@interface ReflectedImageView : UIView { @private UIImageView *_imageView; UIImageView *_imageReflectionView; } @property (nonatomic, retain) UIImage *image; @end然后,在你的实现中,像这样
And then, in your implementation, something like this
@implementation ReflectedImageView @dynamic image; - (id)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { self.backgroundColor = [UIColor clearColor]; // This should be the size of your image: CGRect rect = CGRectMake(0.0, 0.0, 320.0, 290.0); _imageReflectionView = [[UIImageView alloc] initWithFrame:rect]; _imageReflectionView.contentMode = UIViewContentModeScaleAspectFit; _imageReflectionView.alpha = 0.4; _imageReflectionView.transform = CGAffineTransformMake(1, 0, 0, -1, 0, 290.0); [self addSubview:_imageReflectionView]; _imageView = [[UIImageView alloc] initWithFrame:rect]; _imageView.contentMode = UIViewContentModeScaleAspectFit; [self addSubview:_imageView]; } return self; } - (void)setImage:(UIImage *)newImage { _imageView.image = newImage; _imageReflectionView.image = newImage; } - (UIImage *)image { return _imageView.image; } - (void)dealloc { [_imageView release]; [_imageReflectionView release]; [super dealloc]; } @end更多推荐
向 UIImageView 添加反射的最有效方法是什么
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