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react-native-autocomplete-dropdown

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

license npm npm

This is documentation for version 4.x, if you are looking docs for version 3.x, you can find it here

Demo

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

or download the Expo Go app and scan the QR code below

Nav

Installation

Run:

or

yarn add react-native-autocomplete-dropdown

or for v3.x

yarn add react-native-autocomplete-dropdown@3.1.5

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>

The dropdown position is relative to the AutocompleteDropdownContextProvider, so put this in the right place, it should cover all the screen/modal.

If you have a header component, you can pass an offset. For example with react navigation

//...
import { useHeaderHeight } from '@react-navigation/elements';
//...
const headerHeight = useHeaderHeight();
//...

<AutocompleteDropdownContextProvider headerOffset={headerHeight} >
    <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

To play around with the examples, you can run the following commands

cd example
yarn install
yarn pods

yarn ios
yarn android

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
caseSensitive whether to perform case-sensitive search bool false
ignoreAccents ignore diacritics bool true
trimSearchText trim the searched text bool true
editable is textInput editable 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
matchFrom whether match suggestions from start of titles or anywhere in the title. Possible values are "any" or "start" string any
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\

Usage with a Modal

if you want to use the dropdown in a modal, you need to wrap the dropdown in another AutocompleteDropdownContextProvider inside the modal component

    <Modal
        visible={opened}
        presentationStyle="formSheet"
        animationType="slide"
        onRequestClose={() => setOpened(false)}>
        <SafeAreaView style={{ flex: 1, backgroundColor: 'transparent' }}>
          <AutocompleteDropdownContextProvider>
            <View style={{ paddingHorizontal: 20, flex: 1, paddingTop: 20 }}>
              <AutocompleteDropdown {...props}/>
            </View>
          </AutocompleteDropdownContextProvider>
        </SafeAreaView>
    </Modal>