React Native SectionList getItemLayout

This package provides a function that helps you construct the getItemLayout function for your SectionLists. For an explanation of why this exists, see this post. It's meant to be used like this:

1import sectionListGetItemLayout from 'react-native-section-list-get-item-layout'
2
3class MyComponent extends React.Component {
4  constructor(props) {
5    super(props)
6
7    this.getItemLayout = sectionListGetItemLayout({
8      // The height of the row with rowData at the given sectionIndex and rowIndex
9      getItemHeight: (rowData, sectionIndex, rowIndex) => sectionIndex === 0 ? 100 : 50,
10
11      // These four properties are optional
12      getSeparatorHeight: () => 1 / PixelRatio.get(), // The height of your separators
13      getSectionHeaderHeight: () => 20, // The height of your section headers
14      getSectionFooterHeight: () => 10, // The height of your section footers
15      listHeaderHeight: 40, // The height of your list header
16    })
17  }
18
19  render() {
20    return (
21      <SectionList
22        {...otherStuff}
23        getItemLayout={this.getItemLayout}
24      />
25    )
26  }
27}