react-native-modal-filter-picker

A cross-platform (iOS, Android) modal picker for React Native.

Features:

• Cross-platform (iOS, Android)
• Default styling works well
• Extensively customisable styling and rendering
• Built-in search filter for long lists
• Uses React Native FlatList for lazy-loading and high performance
• Compatible with React Native 0.40+
• Successfully used in production apps

Installation

Use NPM/Yarn to install package: react-native-modal-filter-picker

Usage

A basic demo:

import { Component, View, Text, TouchableOpacity } from 'react-native'

import ModalFilterPicker from 'react-native-modal-filter-picker'


export default class App extends Component {
  constructor (props, ctx) {
    super(props, ctx);

    this.state = {
      visible: false,
      picked: null,
    };
  }

  render() {
    const { visible, picked } = this.state;

    const options = [
      {
        key: 'kenya',
        label: 'Kenya',
      },
      {
        key: 'uganda',
        label: 'Uganda',
      },
      {
        key: 'libya',
        label: 'Libya',
      },
      {
        key: 'morocco',
        label: 'Morocco',
      },
      {
        key: 'estonia',
        label: 'Estonia',
      },
    ];

    return (
      <View style={styles.container}>
        <TouchableOpacity style={styles.buttonContainer} onPress={this.onShow}>
          <Text>Select country</Text>
        </TouchableOpacity>      
        <Text style={appStyles.label}>Selected:</Text>
        <Text>{picked}</Text>
        <ModalFilterPicker
          visible={visible}
          onSelect={this.onSelect}
          onCancel={this.onCancel}
          options={options}
        />
      </View>
    );
  }

  onShow = () => {
    this.setState({ visible: true });
  }

  onSelect = (picked) => {
    this.setState({
      picked: picked,
      visible: false
    })
  }

  onCancel = () => {
    this.setState({
      visible: false
    });
  }
}

Options

The following functionality props can be passed to the component:

Prop name	Type	Default	Description
options	Array of { key, label }	(required)	The options to display in the list
onSelect	function (key) {}	(required)	Callback for when an option is chosen
onCancel	function () {}	(required)	Callback for when the cancel button is pressed
placeholderText	String	"Filter..."	Placeholder text for filter input text field
placeholderTextColor	String	"#ccc"	Color of placeholder text for filter input text field
androidUnderlineColor	String	"rgba(0,0,0,0)"	Android text underline color of filter input text field
cancelButtonText	String	"Cancel"	Cancel button text
title	String	null	Title text which appears above options list
noResultsText	String	"No matches"	Text to show when there are no results for filter
visible	Boolean	true	Whether to show modal or not. This allows you to control when the picker is shown and/or hidden.
showFilter	Boolean	true	Whether to show filter text field field or not
modal	Object	null	Options to pass to native Modal component
selectedOption	String	null	The currently selected option, to visually differentiate it from others
flatListProps	Object	null	Properties to pass to the rendered FlatList
renderOption	function (option, isSelected) {}	null	Custom option renderer
renderList	function () {}	null	Custom option list renderer
renderCancelButton	function () {}	null	Custom cancel button renderer
keyboardShouldPersistTaps	never/always/handle	never	Determines when the keyboard should stay visible after a tap. If never, tapping outside of the focused text input when the keyboard is up dismisses the keyboard. When this happens, children won't receive the tap. If always, the keyboard will not dismiss automatically, and the scroll view will not catch taps, but children of the scroll view can catch taps. If handled, the keyboard will not dismiss automatically when the tap was handled by a children, (or captured by an ancestor).
autoFocus	Boolean	false	If true, focuses the input on componentDidMount().

In addition, the following styling props (each of which must be an Object consisting of styles) can be passed in:

Prop name	Description
overlayStyle	Style for the background modal overlay
listContainerStyle	Style for the View wrapping the options list
filterTextInputContainerStyle	Style for the View wrapping the filter input text field
filterTextInputStyle	Style for the filter input text field
cancelContainerStyle	Style for the View wrapping the cancel button
cancelButtonStyle	Style for the cancel button button face
cancelButtonTextStyle	Style for the cancel button text
titleTextStyle	Style for the title text
optionTextStyle	Style for the option text

Advanced filtering

By default the filter input field allows you to filter by the option label that's displayed on the screen.

But you can also attach a searchKey attribute to each option for the filtering algorithm to use. For example, we can allow the user to filter by continent as well as country name, even though we don't display the continent name:

render() {
  const { visible } = this.state;

  const options = [
    {
      key: 'kenya',
      label: 'Kenya',
      searchKey: 'Africa',
    },
    {
      key: 'uganda',
      label: 'Uganda',
      searchKey: 'Africa',
    },
    {
      key: 'libya',
      label: 'Libya',
      searchKey: 'Africa',
    },
    {
      key: 'japan',
      label: 'Japan',
      searchKey: 'Asia',
    },
    {
      key: 'estonia',
      label: 'Estonia',
      searchKey: 'Europe',
    },
  ];

  return (
    <View style={styles.container}>
      <ModalFilterPicker
        onSelect={this.onSelect}
        onCancel={this.onCancel}
        options={options}
      />
    </View>
  );
}

If you run the above example, you will be able to type africa into the filter input field to see all the countries within Africa.

Note: Filtering is case-insensitive

License

MIT