ReactNative SectionList 缺少关键警告 [英] ReactNative SectionList Missing Key Warning

问题描述

我正在关注 SectionLists 上的 ReactNative 教程 (https://facebook.github.io/react-native/docs/using-a-listview.html#content) 并遇到警告消息.

I'm following the ReactNative tutorial on SectionLists (https://facebook.github.io/react-native/docs/using-a-listview.html#content) and have run into a warning message.

警告状态

"警告:VirtualizedSectionList:您提供的 section 缺少 key 属性.

"Warning: VirtualizedSectionList: A section you supplied is missing the key property.

VirtualizedList:缺少项的键，请确保为每个项指定键属性或提供自定义 keyExtractor"

"VirtualizedList: missing keys for items, make sure to specify a key property on each item or provide a custom keyExtractor"

有人可以协助解决此警告吗?

Can someone assist in resolving this warning?

编辑所以我能够通过向部分添加一个键来解决第一个警告

Edit So I was able to resolve the first warning by adding a key to the sections

sections={[
            {key: 'D', title: 'D', data: ['Devin']},
            {key: 'J', title: 'J', data: ['Jackson', 'James', 'Jillian',   'Jimmy', 'Joel', 'John', 'Julie']},
          ]}

但是我仍然收到 1 个实例的第二个错误.

But am stilling getting the second error for 1 instance.

推荐答案

我之前遇到过同样的错误.定义 keyExtractor 属性为我解决了这个问题.

I came across the same error before. Defining the keyExtractor property solved it for me.

https://facebook.github.io/react-native/docs/sectionlist.html#keyextractor

你试过了吗?

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