UITableView Scroll事件 [英] UITableView Scroll event

问题描述

我想检测是否滚动了mytable视图，我尝试了所有触摸事件，如下所示：

I want to detect if mytable view has been scrolled, I tried all touch events like this one:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
  {
    [super touchesBegan:touches withEvent:event];
    //my code
  }

但似乎所有触摸事件都没有不响应滚动，但只有当单元格被触摸，移动等时它们才会响应

but it seems that all touch events don't response to scroll but they response only when cells are touched, moved,...etc

有没有办法检测UITableView的滚动事件？

Is there a way to detect scroll event of UITableView ?

推荐答案

如果你实现 UITableViewDelegate 协议，你也可以实现一个 UIScrollViewDelegate 方法：

If you implement the UITableViewDelegate protocol, you can also implement one of the UIScrollViewDelegate methods:

- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView

或

- (void)scrollViewDidScroll:(UIScrollView *)scrollView

例如，如果你有一个名为的属性tableView ：

For example, if you have a property called tableView:

// ... setting up the table view here ...
self.tableView.delegate = self;
// ...

// Somewhere in your implementation file:
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
{
    NSLog(@"Will begin dragging");
}

- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
    NSLog(@"Did Scroll");
}

这是因为 UITableViewDelegate 符合 UIScrollViewDelegate ，如文档或头文件中所示。

This is because UITableViewDelegate conforms to UIScrollViewDelegate, as can be seen in the documentation or in the header file.

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