我有一个水平滚动视图,里面填充了UIImageViews
。在UIScrollView里面检测UIImageView的水龙头
我想检测UIImageView
上的一个水龙头,并更改其背景颜色。
不知何故,轻拍手势不工作,所以。
但是,当我向滚动视图添加轻击手势时,它就起作用。 scrollview.background color
可以更改。
但我想检测它包含的UIImageViews
上的一个水龙头!
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];
}
已经取代<用(小于),因为该代码之后消失。 – Pip
UITapGestureRecognizer的目标应该是自己的,而不是UIImageView本身。 –