react-native-recyclerview-list

A RecyclerView implementation for ReactNative, that overcomes some limitations of FlatList, VirtualizedList and ListView.

Supported React Native Versions

Features

• Supports native animation during adding or removal of items (as the classic RecyclerView does)
• Add items at the top with no scrolling issue: it means that you can easily implement an infinite scroll in both directions
• Scroll to whatever index you want: even if you don't know the exact dimensions of your rendered items, you can scroll to any index without any scrolling issue
• Control the scrolling velocity: the velocity param in the scrollToIndex method is exactly for this
• Initial scroll index: specify the scroll position at startup, and there will be no flicker
• Low memory usage: it renders just the visible items plus some extra items around
• Supports both scroll direction: use the inverted prop to invert the scroll direction

Caveats

• It's just for Android.
• Just vertical linear layout. No fancy layouts as grid.

Getting started

$ npm install react-native-recyclerview-list --save

Mostly automatic installation

$ react-native link react-native-recyclerview-list

Manual installation

Android

1. Open up android/app/src/main/java/[...]/MainActivity.java

• Add import com.github.godness84.RNRecyclerViewList.RNRecyclerviewListPackage; to the imports at the top of the file
• Add new RNRecyclerviewListPackage() to the list returned by the getPackages() method

2. Append the following lines to android/settings.gradle:

   include ':react-native-recyclerview-list'
   project(':react-native-recyclerview-list').projectDir = new File(rootProject.projectDir, 	'../node_modules/react-native-recyclerview-list/android')
   

3. Insert the following lines inside the dependencies block in android/app/build.gradle:

     compile project(':react-native-recyclerview-list')
   

Usage

import RecyclerviewList, { DataSource } from 'react-native-recyclerview-list';

// Take an array as data
var rawdata = [
  { id: 1, text: 'Item #1' },
  { id: 2, text: 'Item #2' },
  { id: 3, text: 'Item #3' },
  { id: 4, text: 'Item #4' },
  { id: 5, text: 'Item #5' }
];

// Wrap your data in a DataSource.
// The second argument is the 'keyExtractor' function that returns the unique key of the item.
var dataSource = new DataSource(rawdata, (item, index) => item.id);

...

// Render the list
render() {
  return (
    <RecyclerviewList
      style={{ flex: 1 }}
      dataSource={dataSource}
      renderItem={({item, index}) => (
        <Text>{item.text} - {index}</Text>
      )} />
  );
}

Props

Methods

DataSource

It wraps your array, giving you some useful methods to update the data.

Methods

How to contribute to this library

Directory structure

.
├── example
│   ├── __tests__
│   ├── android
│   ├── ios
│   ├── app.json
│   ├── index.android.js
│   ├── index.ios.js
│   └── package.json
├── android
│   └── src
│      └── main
│          └── java
│              └── com
│                  └── github
│                      └── godness84
│                          └── RNRecyclerViewList
│                              ├── ContentSizeChangeEvent.java
│                              ├── NotAnimatedItemAnimator.java
│                              ├── RNRecyclerviewListModule.java
│                              ├── RNRecyclerviewListPackage.java
│                              ├── RecyclerViewBackedScrollView.java
│                              ├── RecyclerViewBackedScrollViewManager.java
│                              ├── RecyclerViewItemView.java
│                              ├── RecyclerViewItemViewManager.java
│                              └── VisibleItemsChangeEvent.java
├── src
│   ├── DataSource.js
│   └── RecyclerViewList.js
├── index.js
├── package.json
├── LICENSE.md
└── README.md

If you have to change Android native code, you must have a look at the code in library/android/src/main/java/com/github/godness84/RNRecyclerViewList. Depending of your changes you might have to change the Javascript interface as well in library/src/.

Run the example app

Make sure to have an emulator running or an Android device connected, and then:

$ cd example/
$ react-native run-android

This will build the Android library (via gradle) and example app, then launch the main example activity on your connected device and run the Metro bundler at the same time.