触摸UIScrollView的事件

Question

我该如何获取UIScrollView的触摸事件？我有一个UIViewController，并在viewController中放置了一个scrollView。我需要在scrollView中添加imageViews，如果单击了特定图像，则应将其重定向到其对应的viewController。 我知道如何向UIViewController添加触摸事件，但这不适用于scrollView。

-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch= [touches anyObject];
    if ([touch view] == img1)
    {

        ViewController2 *viewController2=[[ViewController2 alloc]initWithNibName:@"ViewController2" bundle:nil];
        [self presentViewController: viewController2 animated:YES completion:nil];



    }
}

如何获取scrollView的touches事件？

Answer 1

要做到这一点的唯一方法是通过创建一个自定义UIScrollView您的自定义UIScrollView会的一个子类UIScrollView 。

也为更多的选项，你可以检查此

Answer 2

设置如下所示：

UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTapGestureCaptured:)];
[scrollView addGestureRecognizer:singleTap];    

and you get the touch in:

- (void)singleTapGestureCaptured:(UITapGestureRecognizer *)gesture
  { 
    CGPoint touchPoint=[gesture locationInView:scrollView];
  }

Answer 3

您可以使用ScrollViewDelegate并可以使用函数“ ScrollViewDidScroll”来获取scrollview滚动事件。

设置点击手势识别器：

UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTapGestureCaptured:)];
[scrollView addGestureRecognizer:singleTap];   



- (void)singleTapGestureCaptured:(UITapGestureRecognizer *)gesture
  { 
    CGPoint touchPoint=[gesture locationInView:scrollView];
  }