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Xamarin.Forms的FastScrolling ListView

[英]FastScrolling ListView with Xamarin.Forms

原文 2018-01-06 19:14:43 2 1 android/ listview/ xamarin/ xamarin.forms/ xamarin.android

I would like to have my Xamarin.Forms ListView (XAML) FastScroll. 我想要Xamarin.Forms ListView（XAML）FastScroll。 I already wrote a CustomRenderer for Android and set Control.FastScrollEnabled = true; 我已经为Android编写了CustomRenderer并设置了Control.FastScrollEnabled = true; . 。 But unfortunately this is not enough to make it work. 但是不幸的是，这还不足以使其发挥作用。 As described here the Adapter needs to implement ISectionIndexer . 如上所述这里适配器需要实现ISectionIndexer 。

In my case the Adapter on the ListView does not ( HeaderViewListAdapter ). 在我的情况下，ListView上的适配器没有（ HeaderViewListAdapter ）。 Does anyone have an Idea how this problem can be solved? 有谁知道如何解决这个问题？ I already tried to write a wrapper for the Adapter, but can't get it work (gets never called because I think a ListView's Adapter can not be switched after it has been set once). 我已经尝试为Adapter写一个包装器，但是无法使其工作（永远不会调用，因为我认为ListView的Adapter设置一次后就无法切换）。

Thanks! 谢谢！

1 个解决方案

Ok, I was able to get it working. 好的，我能够使它工作。 I had to create a CustomView in XF that inherits ListView. 我必须在XF中创建一个继承ListView的CustomView。 And in a CustomRenderer I was able to create a new Adapter that implements ISectionIndexer 在CustomRenderer中，我能够创建一个实现ISectionIndexer的新适配器

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