检测UIScrollView内的UIImageView上的点击

Question

我有一个水平滚动视图填充UIImageViews.

我想检测一下UIImageView它的背景并改变其背景颜色.

不知何故,敲击手势不起作用.

但是,当我向滚动视图添加点击手势时,它可以正常工作.该scrollview.background color是可以改变的.

但我想检测UIImageViews它包含的点击!

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];
}

Answer 1

NO默认情况下UIImageView,用户交互设置为,因此您需要将其设置为YES.您为"item"将其设置为yes,但不是contentOfScrollView.