react-native-autocomplete-dropdown

Dropdown Item picker with search and autocomplete (typeahead) functionality for react native

This is documentation for version 3.x, if you are looking docs for version 2.x, you can find it here

Demo

Run expo snack demo @onmotion/react-native-autocomplete-dropdown

Nav

react-native-autocomplete-dropdown

Installation

Run:

npm install --save react-native-autocomplete-dropdown

yarn add react-native-autocomplete-dropdown

Post-install Steps

Make sure react-native-svg is installed. Follow the guide https://github.com/software-mansion/react-native-svg

yarn add react-native-svg

iOS

Run: npx pod-install for install react-native-svg dependency (if not installed yet).

Android

No additional steps are necessary

Usage

Wrap your root component in AutocompleteDropdownContextProvider from react-native-autocomplete-dropdown as you can see in example

<AutocompleteDropdownContextProvider>
    <AppRootOrWhatever/>
</AutocompleteDropdownContextProvider>

import the package

import { AutocompleteDropdown } from 'react-native-autocomplete-dropdown';

Dataset item format

dataSet property must be an array of objects or null. Object required keys are:

{
    id: 'some uniq string id',
    title: 'list item title'
}

Example with local Dataset

const [selectedItem, setSelectedItem] = useState(null);

<AutocompleteDropdown
  clearOnFocus={false}
  closeOnBlur={true}
  closeOnSubmit={false}
  initialValue={{ id: '2' }} // or just '2'
  onSelectItem={setSelectedItem}
  dataSet={[
    { id: '1', title: 'Alpha' },
    { id: '2', title: 'Beta' },
    { id: '3', title: 'Gamma' },
  ]}
/>;

Example with remote requested Dataset

import React, { memo, useCallback, useRef, useState } from 'react'
import { Button, Dimensions, Text, View, Platform } from 'react-native'
import { AutocompleteDropdown } from 'react-native-autocomplete-dropdown'

export const RemoteDataSetExample2 = memo(() => {
  const [loading, setLoading] = useState(false)
  const [suggestionsList, setSuggestionsList] = useState(null)
  const [selectedItem, setSelectedItem] = useState(null)
  const dropdownController = useRef(null)

  const searchRef = useRef(null)

  const getSuggestions = useCallback(async q => {
    const filterToken = q.toLowerCase()
    console.log('getSuggestions', q)
    if (typeof q !== 'string' || q.length < 3) {
      setSuggestionsList(null)
      return
    }
    setLoading(true)
    const response = await fetch('https://jsonplaceholder.typicode.com/posts')
    const items = await response.json()
    const suggestions = items
      .filter(item => item.title.toLowerCase().includes(filterToken))
      .map(item => ({
        id: item.id,
        title: item.title,
      }))
    setSuggestionsList(suggestions)
    setLoading(false)
  }, [])

  const onClearPress = useCallback(() => {
    setSuggestionsList(null)
  }, [])

  const onOpenSuggestionsList = useCallback(isOpened => {}, [])

  return (
    <>
      <View
        style={[
          { flex: 1, flexDirection: 'row', alignItems: 'center' },
          Platform.select({ ios: { zIndex: 1 } }),
        ]}>
        <AutocompleteDropdown
          ref={searchRef}
          controller={controller => {
            dropdownController.current = controller
          }}
          // initialValue={'1'}
          direction={Platform.select({ ios: 'down' })}
          dataSet={suggestionsList}
          onChangeText={getSuggestions}
          onSelectItem={item => {
            item && setSelectedItem(item.id)
          }}
          debounce={600}
          suggestionsListMaxHeight={Dimensions.get('window').height * 0.4}
          onClear={onClearPress}
          //  onSubmit={(e) => onSubmitSearch(e.nativeEvent.text)}
          onOpenSuggestionsList={onOpenSuggestionsList}
          loading={loading}
          useFilter={false} // set false to prevent rerender twice
          textInputProps={{
            placeholder: 'Type 3+ letters (dolo...)',
            autoCorrect: false,
            autoCapitalize: 'none',
            style: {
              borderRadius: 25,
              backgroundColor: '#383b42',
              color: '#fff',
              paddingLeft: 18,
            },
          }}
          rightButtonsContainerStyle={{
            right: 8,
            height: 30,

            alignSelf: 'center',
          }}
          inputContainerStyle={{
            backgroundColor: '#383b42',
            borderRadius: 25,
          }}
          suggestionsListContainerStyle={{
            backgroundColor: '#383b42',
          }}
          containerStyle={{ flexGrow: 1, flexShrink: 1 }}
          renderItem={(item, text) => <Text style={{ color: '#fff', padding: 15 }}>{item.title}</Text>}
        //   ChevronIconComponent={<Feather name="chevron-down" size={20} color="#fff" />}
        //   ClearIconComponent={<Feather name="x-circle" size={18} color="#fff" />}
          inputHeight={50}
          showChevron={false}
          closeOnBlur={false}
          //  showClear={false}
        />
        <View style={{ width: 10 }} />
        <Button style={{ flexGrow: 0 }} title="Toggle" onPress={() => dropdownController.current.toggle()} />
      </View>
      <Text style={{ color: '#668', fontSize: 13 }}>Selected item id: {JSON.stringify(selectedItem)}</Text>
    </>
  )
})

More examples see at https://github.com/onmotion/react-native-autocomplete-dropdown/tree/main/example

Playground

cd example
yarn install
npx pod-install
yarn ios

Options

Option	Description	Type	Default
`dataSet`	set of list items	array	null
`initialValue`	string (id) or object that contain id	string \| object	null
`loading`	loading state	bool	false
`useFilter`	whether use local filter by dataSet (useful set to false for remote filtering to prevent rerender twice)	bool	true
`showClear`	show clear button	bool	true
`showChevron`	show chevron (open/close) button	bool	true
`closeOnBlur`	whether to close dropdown on blur	bool	false
`closeOnSubmit`	whether to close dropdown on submit	bool	false
`clearOnFocus`	whether to clear typed text on focus	bool	true
`debounce`	wait ms before call `onChangeText`	number	0
`suggestionsListMaxHeight`	max height of dropdown	number	200
`direction`	"up" or "down"	string	down + auto calculate
`bottomOffset`	for calculate dropdown direction (e.g. tabbar)	number	0
`onChangeText`	event textInput onChangeText	function
`onSelectItem`	event onSelectItem	function
`onOpenSuggestionsList`	event onOpenSuggestionsList	function
`onChevronPress`	event onChevronPress	function
`onClear`	event on clear button press	function
`onSubmit`	event on submit KB button press	function
`onBlur`	event fired on text input blur	function
`onFocus`	event on focus text input	function
`renderItem`	JSX for render item `(item, searchText) => JSX \| null` if return null then the element will not be displayed	function	item.title
`controller`	return reference to module controller with methods close, open, toggle, clear, setInputText, setItem	function
`containerStyle`		ViewStyle
`rightButtonsContainerStyle`		ViewStyle
`suggestionsListContainerStyle`		ViewStyle
`suggestionsListTextStyle`		TextStyle	styles of suggestions list text items
`ChevronIconComponent`		React.Component	Feather chevron icon
`ClearIconComponent`		React.Component	Feather x icon
~~ScrollViewComponent~~	removed in 2.0.0 based on FlatList	React.Component name	ScrollView that provide suggestions content
`EmptyResultComponent`	replace the default `` Component on empty result	React.Component
`InputComponent`	input element component	React.ComponentType	TextInput
`emptyResultText`	replace the default "Nothing found" text on empty result	string	"Nothing found"
`textInputProps`	text input props	TextInputProps
`flatListProps`	props for \ component	FlatListProps\

wangdaliu/react-native-autocomplete-dropdown