updated-react-native-drag-sort-gridview

react-native-drag-sort-gridview

Getting started

Animation is accelerated by react-native-reanimated and react-addons-update. Please install and setup react-native-reanimated

npm install react-native-drag-sort-gridview --save
npm install react-addons-update --save

or

yarn add react-native-drag-sort-gridview react-addons-update

Example

Examples

Simple Usage

import React, { memo, useCallback, useState } from 'react'
import { StyleSheet, View } from 'react-native'
import DraggableGridView from 'ddd'

interface IItem {
  id: number
  color: string
}

const Item = memo(({ item }: { item: IItem }) => (
  <View style={[styles.item, { backgroundColor: item.color }]} />
))

const Example = () => {
  const [data, setData] = useState<Array<IItem>>([
    { id: 0, color: '#FF0000' },
    { id: 1, color: '#00FF00' },
    { id: 2, color: '#0000FF' },
    { id: 3, color: '#FFFF00' },
    { id: 4, color: '#00FFFF' },
    { id: 5, color: '#FF00FF' },
    { id: 6, color: '#FFFFFF' },
    { id: 7, color: '#888888' },
    { id: 8, color: '#555555' }
  ])

  const onOrderChanged = useCallback((orderedData: Array<IItem>) => setData(orderedData), [])

  const renderItem = ({ item }: { item: IItem }) => <Item item={item} />

  const keyExtractor = ({ id }: IItem) => `gridview-${id}`

  return (
    <DraggableGridView
      style={styles.bg}
      contentContainerStyle={styles.contentContainer}
      itemContainerStyle={styles.itemContainer}
      isEditing={true}
      numColumns={3}
      itemHeight={100}
      data={data}
      shouldAnimOnRelease={true}
      keyExtractor={keyExtractor}
      onOrderChanged={onOrderChanged}
      renderItem={renderItem}
    />
  )
}

const styles = StyleSheet.create({
  bg: {
    overflow: 'visible',
    backgroundColor: '#222222',
    paddingVertical: 80
  },
  contentContainer: {
    justifyContent: 'flex-start'
  },
  itemContainer: {
    padding: 10
  },
  item: {
    width: '100%',
    height: 80
  }
})

export default Example

Version >= 1.3.0 & shouldAnimOnRelease={true}

shouldAnimOnRelease={false}

Props

Accept all props in ScrollView

Name	Type	Required	Description
data	Array	✓	Same as FlatList data.
renderItem	function	✓	(info: { item: T, index: number}) => React.ReactElement. Simular to FlatList renderItem but this module does NOT accept JSX.Element. Currently not accept separator. Highly recommond to memo the render items to improve performance.
isEditing	boolean	✓	If isEditing is true, item can be sorted by drag & drop, but onPress/onLongPress within items would be blocked.
onOrderChanged	function	✓	Callback when touch end. (orderedData: Array<T>, from: number, to: number) would be returned. orderedData is an array of data with new order. from is the original position of the dragged item. to is the new position of the dragged item.
keyExtractor	function	✓	Same as FlatList keyExtractor.
isEditing	boolean	✓	If isEditing is true, item can be sorted by drag & drop, but onPress/onLongPress within items would be blocked.
numColumns	number		Default 1. Same as FlatList numColumns. If only 1 item is rendered in each row, you may use react-native-draggable-flatlist which has better performance.
renderOnEditOverlay	function		({ index }: { index: number}) => React.ReactElement. Render overlay on top of renderItem while editing. Delete button can be added here. You may refer to Example Usage. This overlay will block the drag drop panResponder, therefore please keep it small in size. Highly recommond to memo the render items to improve performance.
listWidth	number		Default 100% of screen width. Width of the whole list, This value would be used to calcuate the width of item by listWidth / numColumns.
itemHeight	number		Default listWidth / numColumns. Height of items.
animMoveDuration	number		Default 500. The time taken (miliseconds) for non-dragged items to animate.
debounce	number		Default undefined. Debounce (miliseconds) of non-dragged items to start animation. If value is undefined, there would be no debounce. Implementing debounce can improve performance. If debounce is needed, value 300 is recommanded.
shouldVibrate	boolean		Default true. This determine should the items vibrate while editing.
shouldAnimOnRelease	boolean		Default false. This determine should the dragging item be animated after user released press. Touch would be blocked until all animations end.
onMovingStateChanged	function		This callback would be called only when shouldAnimOnRelease is true. (isMoving: boolean) would be returned. Since the touch of list would be blocked until all animations end, this can be used to indicate whether touch is blocked or not.
scrollThreshold	number		Default undefined. If this value > 0, the actual threshold of scrolling would be height_of_list * scrollThreshold. If user is dragging and moving to a position < threshold or > height_of_list - threshold, the list will scroll upward and downward correspondingly. Value 0.2 is recommanded. You may refer to Example Defined Size.
itemContainerStyle	ViewStyle		Style of item wrapper. User may scroll the list on space created by padding during editing. E.g. itemContainerStyle={{ padding: 10 }} in usage example.