Socket
Socket
Sign inDemoInstall

react-native-draggable-dynamic-flatlist

Package Overview
Dependencies
0
Maintainers
1
Versions
5
Alerts
File Explorer

Advanced tools

Install Socket

Detect and block malicious and high-risk dependencies

Install

    react-native-draggable-dynamic-flatlist

A react native component that lets you drag and drop dynamic items of a FlatList.


Version published
Weekly downloads
207
decreased by-31.46%
Maintainers
1
Install size
7.12 MB
Created
Weekly downloads
 

Readme

Source

react-native-draggable-dynamic-flatlist

A react native component that lets you drag and drop dynamic items of a FlatList. Inspired by react-native-draggable-flatlist

Draggable FlatList demo

Install

  1. npm install react-native-draggable-dynamic-flatlist or yarn add react-native-draggable-dynamic-flatlist
  2. import DraggableFlatList from 'react-native-draggable-dynamic-flatlist'

Api

Props

All props are spread onto underlying FlatList

NameTypeDescription
dataArrayItems to be rendered.
horizontalBooleanOrientation of list.
renderItemFunction({ item, index, move, moveEnd, isActive }) => <Component />. Call move when the row should become active (in an onPress, onLongPress, etc). Call moveEnd when the gesture is complete (in onPressOut).
keyExtractorFunction(item, index) => string
scrollPercentNumberSets where scrolling begins. A value of 5 will scroll up if the finger is in the top 5% of the FlatList container and scroll down in the bottom 5%.
scaleSelectionFactorNumberSets the scale factor of the selected item.
onMoveEndFunction({ data, to, from, row }) => void Returns updated ordering of data
onMoveBeginFunction(index) => void Called when row becomes active.
spacerStyleView.styleStyle of the spacer when an item is moved (ghost view)
removeClippedSubviewsBooleanImprove scroll performance for large lists. May have bugs (missing content) in some circumstances (Default false)

Example

import React, { Component } from 'react'
import { View, TouchableOpacity, Text } from 'react-native'
import DraggableFlatList from 'react-native-draggable-dynamic-flatlist'

class Example extends Component {

  state = {
    data: [...Array(20)].map((d, index) => ({
      key: `item-${index}`,
      label: index,
      backgroundColor: `rgb(${Math.floor(Math.random() * 255)}, ${index * 5}, ${132})`,
    }))
  }

  renderItem = ({ item, index, move, moveEnd, isActive }) => {
    return (
      <TouchableOpacity
        style={{ 
          height: 100, 
          backgroundColor: isActive ? 'blue' : item.backgroundColor,
          alignItems: 'center', 
          justifyContent: 'center' 
        }}
        onLongPress={move}
        onPressOut={moveEnd}>
        <Text style={{ 
          fontWeight: 'bold', 
          color: 'white',
          fontSize: 32,
        }}>{item.label}</Text>
      </TouchableOpacity>
    )
  }

  render() {
    return (
      <View style={{ flex: 1 }}>
        <DraggableFlatList
          data={this.state.data}
          renderItem={this.renderItem}
          keyExtractor={(item, index) => `draggable-item-${item.key}`}
          scrollPercent={5}
          onMoveEnd={({ data }) => this.setState({ data })}
        />
      </View>
    )
  }
}

export default Example

Main differences with react-native-draggable-flatlist

react-native-draggable-flatlist is good but it doesn't work when item's sizes are changing. The positions (x and y) are not calculated properly. It's using measure functions which doesn't work perfectly on react-native, lot of unsolvable bugs (especially on android). Also, the measure function doesn't work when the item is hidden on a flatlist (out of the screen), so if you have big items, it doesn't work really well. The whole measuring system has been refactored by calculating all the positions manually. This library is using the onLayout property on each item and scrollview which makes it more stable with dynamic content. onLayout works perfectly on react-native and there is no more problem with dynamic content.

Keywords

FAQs

Last updated on 11 Apr 2020

Did you know?

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

Install

Related posts

SocketSocket SOC 2 Logo

Product

  • Package Alerts
  • Integrations
  • Docs
  • Pricing
  • FAQ
  • Roadmap

Stay in touch

Get open source security insights delivered straight into your inbox.


  • Terms
  • Privacy
  • Security

Made with ⚡️ by Socket Inc