UITableView自定义滚动条 [英] UITableView Custom Scrollbar

问题描述

如何为UITableView创建自定义滚动条?

我想删除默认值，该默认值在跟踪开始时弹出，而在跟踪结束时消失.相反，我希望有一个类似于计算机程序中的程序:(a)它位于屏幕的右侧，并且永久可见； (b)手动滚动条将UITableView滚动到合适的位置； (c)滚动UITableView将适当地滚动滚动条(不显示Apple提供的默认滚动条).

I want to remove the default one that pops up when tracking begins and that disappears when tracking ends. I want, instead, to have one similar to that in a computer program: (a) it's on the right side of the screen and permanently visible; (b) manually scrolling the bar will scroll the UITableView to the appropriate position; (c) scrolling the UITableView will scroll the scroll bar appropriately (without showing the default one that Apple provides).

据我所知，(b)和(c)的困难在于，Apple仅提供了滚动到特定行/节的方法，而没有滚动到下一行的四分之三的方法.因此，例如，如果我要滚动滚动条，则UITableView随后将仅滚动到行/单元格的顶部.我在说的方法是:

The difficulty in (b) and (c) is that, as far as I know, Apple only provides methods to scroll to a particular row/section, but not to scroll to three-fourths of the way down a row. So, for example, if I want to scroll the scroll bar, the UITableView will subsequently only scroll to the top of a row/cell. The method I'm talking about is:

- (void)scrollToRowAtIndexPath:(NSIndexPath *)indexPath atScrollPosition:(UITableViewScrollPosition)scrollPosition animated:(BOOL)animated

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有人以前在UITableView中实现过自定义滚动条吗?或者有人可以帮助我找出解决以下问题的方法:

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Has anyone implemented a custom scroll bar in their UITableView before? Or can someone help me figure out a way to solve the following problems:

• 滚动到UITableView中的任意点，而不是单元格的开头

• scrolling to any point in the UITableView instead of to the start of a cell

删除默认滚动条并阻止其显示

removing the default scroll bar and preventing it from appearing

在滚动UITableView时更改滚动条图像/动画/任何内容

changing the scroll bar image/animation/whatever as the UITableView is scrolled

谢谢！

推荐答案

UITableView继承自UIScrollView，这意味着您可以使用任何现有功能.就您而言

UITableView inherits from UIScrollView, that means you can use any of the existing functions. In your case

– 应该做的工作.它将桌子移动到您想要的任何位置.

should do the job. It moves the table to any position you want.

要禁用现有的滚动指示器，请使用

To disable the existing scroll indicator, use

table.showsVerticalScrollIndicator = NO;

要添加您自己的视图，只需添加您的自定义视图！

And to add your own, just add your custom view!

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