我有一个充满UIImageViews的水平滚动 View 。

我想检测UIImageView上的点击,并更改其背景颜色。

不知何故,轻击手势不起作用或如此。

但是,当我向滚动 View 添加轻击手势时,它可以工作。 scrollview.background color可以更改。

但是我想检测一下其中包含的UIImageViews的点击!

UIScrollView* scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 50, 768, 127)];
[scrollView setScrollEnabled:YES];
scrollView.backgroundColor = [UIColor orangeColor];
[scrollView setShowsHorizontalScrollIndicator:NO];
UIImageView *contentOfScrollView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 1, 1130, 125)];
scrollView.contentSize = CGSizeMake(contentOfScrollView.frame.size.width, contentOfScrollView.frame.size.height);

for (int aantal=0; aantal < 6; aantal++) {
    UIImageView *item = [[UIImageView alloc] initWithFrame:CGRectMake(3+(aantal*188), 0, 185, 125)];
    item.backgroundColor = [UIColor yellowColor];
    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:item action:@selector(imageTapped:)];
    tap.numberOfTapsRequired = 1;
    tap.cancelsTouchesInView=YES;
    item.userInteractionEnabled = YES;
    [item addGestureRecognizer:tap];
    [contentOfScrollView addSubview:item];
}

//UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(imageTapped:)];
//[scrollView addGestureRecognizer:tap];
scrollView.userInteractionEnabled=YES;
scrollView.delaysContentTouches=NO;
[scrollView addSubview:contentOfScrollView];
[self.view addSubview:scrollView];

这是imageTapped函数。
-(void)imageTapped:(UITapGestureRecognizer *)gesture
{
    NSLog(@"tapped!");
    gesture.view.backgroundColor = [UIColor whiteColor];
}

最佳答案

默认情况下,对于NO,用户交互设置为UIImageView,因此您需要将其设置为YES
您将“item”设置为yes,但未将contentOfScrollView设置为yes。

关于ios - 检测UIScrollView内UIImageView上的点击,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/13557767/

10-09 08:54