Simple multi select component for react native

react-native-multiple-select

Simple multi-select component for react-native (Select2 for react-native).

Important notice

I've been super busy with work and other projects lately that I really don't have enough time to dedicate to this project. If you would like to maintain this project, you can drop me an email. Thanks.

Installation

$ npm install react-native-multiple-select --save

or use yarn

$ yarn add react-native-multiple-select

Usage

Note: Ensure to add and configure react-native-vector-icons to your project before using this package.

You can clone and try out the sample app.

The snippet below shows how the component can be used

// import component
import React, { Component } from 'react';
import { View } from 'react-native';
import MultiSelect from 'react-native-multiple-select';

class MultiSelectExample extends Component {

  this.state = {
    selectedItems = [];
  };

  this.items = [{
    id: '92iijs7yta',
    name: 'Ondo',
  }, {
    id: 'a0s0a8ssbsd',
    name: 'Ogun',
  }, {
    id: '16hbajsabsd',
    name: 'Calabar',
  }, {
    id: 'nahs75a5sg',
    name: 'Lagos',
  }, {
    id: '667atsas',
    name: 'Maiduguri',
  }, {
    id: 'hsyasajs',
    name: 'Anambra',
  }, {
    id: 'djsjudksjd',
    name: 'Benue',
  }, {
    id: 'sdhyaysdj',
    name: 'Kaduna',
  }, {
    id: 'suudydjsjd',
    name: 'Abuja',
  }];

  onSelectedItemsChange = selectedItems => {
    this.setState({ selectedItems });
  };

  render() {
    const { selectedItems } = this.state;
    return (
      <View style={{ flex: 1 }}>
        <MultiSelect
          hideTags
          items={items}
          uniqueKey="id"
          ref={(component) => { this.multiSelect = component }}
          onSelectedItemsChange={this.onSelectedItemsChange}
          selectedItems={selectedItems}
          selectText="Pick Items"
          searchInputPlaceholderText="Search Items..."
          onChangeInput={ (text)=> console.log(text)}
          altFontFamily="ProximaNova-Light"
          tagRemoveIconColor="#CCC"
          tagBorderColor="#CCC"
          tagTextColor="#CCC"
          selectedItemTextColor="#CCC"
          selectedItemIconColor="#CCC"
          itemTextColor="#000"
          displayKey="name"
          searchInputStyle={{ color: '#CCC' }}
          submitButtonColor="#CCC"
          submitButtonText="Submit"
        />
        <View>
          {this.multiSelect.getSelectedItemsExt(selectedItems)}
        </View>
      </View>
    );
  }
}

The component takes 3 compulsory props - items, uniqueKey and onSelectedItemsChange. Other props are optional. The table below explains more.

Props

Prop	Required	Purpose
altFontFamily	No	(String) Font family for `searchInputPlaceholderText`
canAddItems	No	(Boolean) Defaults to "false". This allows a user to add items to the list of items provided. You need to handle adding the new items in the onAddItem function prop. Items may be added with the return key on the native keyboard.
displayKey	No	(String) Defaults to "name". This string will be used to select the key to display the objects in the items array
fixedHeight	No	(Boolean) Defaults to false. Specifies if select dropdown take height of content or a fixed height with a scrollBar (There is an issue with this behavior when component is nested in a ScrollView in which scroll event will only be dispatched to parent ScrollView and select component won't be scrollable). See this issue for more info.
fontFamily	No	(String) Custom font family to be used in component (affects all text except `searchInputPlaceholderText` described above)
fontSize	No	(Number) Font size for selected item name displayed as label for multiselect
hideSubmitButton	No	(Boolean) Defaults to false. Hide submit button from dropdown, and rather use arrow-button in search field
autoFocusInput	No	(Boolean) Defaults to true. Auto focus on the search input when MultiSelect launches.
hideTags	No	(Boolean) Defaults to false. Hide tokenized selected items, in case selected items are to be shown somewhere else in view (check below for more info)
itemFontFamily	No	(String) Font family for each non-selected item in multi-select drop-down
itemFontSize	No	(Number) Font size used for each item in the multi-select drop-down
itemTextColor	No	(String) Text color for each non-selected item in multi-select drop-down
items	Yes	(Array, control prop) List of items to display in the multi-select component. JavaScript Array of objects. Each object must contain a name and unique identifier (Check sample above)
onAddItem	No	(Function) JavaScript function passed in as an argument. The function is called everythime a new item is added, and receives the entire list of items. Here you should ensure that the new items are added to your provided list of `items` in addition to any other consequences of new items being added.
onChangeInput	No	(Function) JavaScript function passed in as an argument. The function is called everythime `TextInput` is changed with the value.
onSelectedItemsChange	Yes	(Function) JavaScript function passed in as an argument. The function is to be defined with an argument (selectedItems). Triggered when `Submit` button is clicked (for multi select) or item is clicked (for single select). (Check sample above)
searchInputPlaceholderText	No	(String) Placeholder text displayed in multi-select filter input
searchInputStyle	No	(Object) Style object for multi-select input element
selectText	No	(String) Text displayed in main component
selectedItemFontFamily	No	(String) Font family for each selected item in multi-select drop-down
selectedItemIconColor	No	(String) Color for `selected` check icon for each selected item in multi-select drop-down
selectedItemTextColor	No	(String) Text color for each selected item in multi-select drop-down
single	No	(Boolean) Toggles select component between single option and multi option
submitButtonColor	No	(String) Background color for submit button
submitButtonText	No	(String) Text displayed on submit button
tagBorderColor	No	(String) Border color for each selected item
tagRemoveIconColor	No	(String) Color to be used for the remove icon in selected items list
tagTextColor	No	(String) Text color for selected items list
textColor	No	(String) Color for selected item name displayed as label for multiselect
uniqueKey	Yes	(String) Unique identifier that is part of each item's properties. Used internally as means of identifying each item (Check sample below)
selectedItems	No	(Array, control prop) List of selected items keys . JavaScript Array of strings, that can be instantiated with the component

Note

Tokenized selected items can be displayed in any other part of the view by adding a ref to the MultiSelect component like so ref={(component) => { this.multiSelect = component }}. Then add this to any part of the screen you want the tokens to show up: this.multiSelect.getSelectedItemsExt(selectedItems). The selectedItems argument passed into the above mentioned method is the same selectedItems passed as the main component selected items prop. (See example above).
If users shouldn't be able to select any of the items in the dropdown list, set a disabled key to true in the item. Such item will be rendered in gray and won't be clickable.
When using the single prop, selectedItems should still be passed in as an array of selected items keys. Also, when an item is selected in the single mode, the selected item is returned as an array of string.
The items props must be passed as an array of objects with a compulsory name key present in each object as the name key is used to display the items in the options component.

Removing all selected items

To use, add ref to MultiSelect component in parent component, then call method against reference. i.e.

<MultiSelect
  ref={c => this._multiSelect = c}
  ...
/>

clearSelectedCategories = () => {
   this._multiSelect.removeAllItems();
};