scrollViewDidScroll从未调用 | scrollViewDidScroll

本文介绍了scrollViewDidScroll从未调用的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

我在View内有一个ScrollView。我想使用scrollViewDidScroll函数检查和更新箭头（左边）。

I have a Scrollview within View. I want to use the function scrollViewDidScroll to check and update the arrows (left right).

- (void)scrollViewDidScroll:(UIScrollView *)scrollView {

    NSLog(@"Did scroll");
    [self updateButtons];
}

当我向左或向右滚动时，scrollViewDidScroll不会被调用。我搜索了一切，但没有找到解决方案。

It seems scrollViewDidScroll won't be called when I scroll left or right. I searched everything but didn't found a solution.

希望有人有解决方案。

典型的错误是一个不只是设置视图的委托。您可能忘记的是

The typical error is that "one does not simply set the delegate of a view". What you have probably forgotten is

theScrollView.delegate = self;

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