IOS滚动画廊

Question

我做我的应用程序这个滑动画廊：

UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(photoTap:)]; 
tap.numberOfTapsRequired = 1; 

int pageCount = 3; 
UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 
                      0, 
                      360, 
                      200)]; 
scrollView.backgroundColor = [UIColor clearColor]; 
scrollView.pagingEnabled = YES; 
scrollView.contentSize = CGSizeMake(pageCount*scrollView.bounds.size.width , 
            scrollView.bounds.size.height); 

[scrollView addGestureRecognizer:tap]; 

CGRect viewsize = scrollView.bounds; 

UIImageView *image = [[UIImageView alloc]initWithFrame:viewsize]; 
[image setImage: [UIImage imageNamed:@"01.png"]]; 
image.userInteractionEnabled = YES; 
[scrollView addSubview:image]; 


viewsize = CGRectOffset(viewsize, scrollView.bounds.size.width, 0); 

UIImageView *image2 = [[UIImageView alloc]initWithFrame:viewsize]; 
[image2 setImage: [UIImage imageNamed:@"02.png"]]; 
image2.userInteractionEnabled = YES; 
[scrollView addSubview:image2]; 

- (void)photoTap:(UITapGestureRecognizer *) gestureRecognizer{ 
} 

我如何检测其照片在我的滚动视图挖？ 我试图添加手势识别器的图像，但只有最后一个工程。 有什么建议吗？谢谢

Answer 1

您可以将手势识别器添加到滚动视图，在检测到轻敲后，通过将点击的坐标添加到内容偏移来检测其在UIScrollView内容上的位置。当你有这个坐标时，我认为检测图像不是问题。