React native customizable picker component

React Native Custom Picker

React native customizable picker component.

Installation

Using npm:

npm i -S react-native-custom-picker

or yarn:

yarn add react-native-custom-picker

Props

Prop Name	Data Type	Default Values	Description
options	any[]	undefined	Option list.
value	any	undefined	Current selected item.
defaultValue	any	undefined	Default value. When clear button pressed this value become selected item.
placeholder	string	'Pick an item'	Placeholder, as default text to display when no option is selected.
modalAnimationType	'none', 'slide' or 'fade'	'none'	Modal animation type.
headerTemplate	HeaderTemplateFunction	undefined	Assign function to render header.
footerTemplate	FooterTemplateFunction	undefined	Assign function to render footer.
fieldTemplate	FieldTemplateFunction	Basic/default field view	Assign function to render field view.
fieldTemplateProps	FieldTemplateProps	undefined	Props for field template
optionTemplate	OptionTemplateFunction	Basic/default option view	Assign function to render option.
optionTemplateProps	OptionTemplateProps	undefined	Props for option template
getLabel	(selectedItem: any) => string	Returns selectedItem.toString()	Assign function to return the selected option text to be displayed in field.
style	ViewStyle	default	Style of field container.
backdropStyle	ViewStyle	default	Style of modal backdrop.
modalStyle	ViewStyle	default	Dropdown modal style.
maxHeight	ViewStyle	default	Maximum height of modal.
refreshControl	RefreshControl	undefined	Component for pull-to-refresh functionality.
scrollViewProps	ScrollViewProps	undefined	ScrollView props. See: https://github.com/budiadiono/react-native-custom-picker/issues/3
onValueChange	ViewStyle	undefined	Event fired when value has been changed.
onFocus	ViewStyle	undefined	Event fired when modal is opened.
onBlur	ViewStyle	undefined	Event fired when modal is closed.

FieldTemplateProps

Prop Name	Data Type	Default Values	Description
textStyle	TextStyle	undefined	Style of field text.
containerStyle	ViewStyle	undefined	Style of field container.
clearImage	JSX.Element	cross icon	Image element for clear button.

OptionTemplateProps

Prop Name	Data Type	Default Values	Description
textStyle	TextStyle	undefined	Style of option text.
containerStyle	ViewStyle	undefined	Style of option container.

Example

Basic Example (No Custom)

You can use CustomPicker component directly as shown below:

import * as React from 'react'
import { Alert, View } from 'react-native'
import { CustomPicker } from 'react-native-custom-picker'

export class BasicExample extends React.Component {
  render() {
    const options = ['One', 'Two', 'Three', 'Four', 'Five']
    return (
      <View style={{ flex: 1, flexDirection: 'column', justifyContent: 'center' }}>
        <CustomPicker
          options={options}
          onValueChange={value => {
            Alert.alert('Selected Item', value || 'No item were selected!')
          }}
        />
      </View>
    )
  }
}

Advanced Example (Customized)

Or customize it your self like this:

import * as React from 'react'
import { Alert, Text, View, TouchableOpacity, StyleSheet } from 'react-native'
import { CustomPicker } from 'react-native-custom-picker'

export class CustomExample extends React.Component {
  render() {
    const options = [
      {
        color: '#2660A4',
        label: 'One',
        value: 1
      },
      {
        color: '#FF6B35',
        label: 'Two',
        value: 2
      },
      {
        color: '#FFBC42',
        label: 'Three',
        value: 3
      },
      {
        color: '#AD343E',
        label: 'Four',
        value: 4
      },
      {
        color: '#051C2B',
        label: 'Five',
        value: 5
      }
    ]
    return (
      <View style={{ flex: 1, flexDirection: 'column', justifyContent: 'center' }}>
        <CustomPicker
          placeholder={'Please select your favorite item...'}
          options={options}
          getLabel={item => item.label}
          fieldTemplate={this.renderField}
          optionTemplate={this.renderOption}
          headerTemplate={this.renderHeader}
          footerTemplate={this.renderFooter}
          onValueChange={value => {
            Alert.alert('Selected Item', value ? JSON.stringify(value) : 'No item were selected!')
          }}
        />
      </View>
    )
  }

  renderHeader() {
    return (
      <View style={styles.headerFooterContainer}>
        <Text>This is header</Text>
      </View>
    )
  }

  renderFooter(action) {
    return (
      <TouchableOpacity
        style={styles.headerFooterContainer}
        onPress={() => {
          Alert.alert('Footer', "You've click the footer!", [
            {
              text: 'OK'
            },
            {
              text: 'Close Dropdown',
              onPress: action.close.bind(this)
            }
          ])
        }}
      >
        <Text>This is footer, click me!</Text>
      </TouchableOpacity>
    )
  }

  renderField(settings) {
    const { selectedItem, defaultText, getLabel, clear } = settings
    return (
      <View style={styles.container}>
        <View>
          {!selectedItem && <Text style={[styles.text, { color: 'grey' }]}>{defaultText}</Text>}
          {selectedItem && (
            <View style={styles.innerContainer}>
              <TouchableOpacity style={styles.clearButton} onPress={clear}>
                <Text style={{ color: '#fff' }}>Clear</Text>
              </TouchableOpacity>
              <Text style={[styles.text, { color: selectedItem.color }]}>
                {getLabel(selectedItem)}
              </Text>
            </View>
          )}
        </View>
      </View>
    )
  }

  renderOption(settings) {
    const { item, getLabel } = settings
    return (
      <View style={styles.optionContainer}>
        <View style={styles.innerContainer}>
          <View style={[styles.box, { backgroundColor: item.color }]} />
          <Text style={{ color: item.color, alignSelf: 'flex-start' }}>{getLabel(item)}</Text>
        </View>
      </View>
    )
  }
}

const styles = StyleSheet.create({
  container: {
    borderColor: 'grey',
    borderWidth: 1,
    padding: 15
  },
  innerContainer: {
    flexDirection: 'row',
    alignItems: 'stretch'
  },
  text: {
    fontSize: 18
  },
  headerFooterContainer: {
    padding: 10,
    alignItems: 'center'
  },
  clearButton: { backgroundColor: 'grey', borderRadius: 5, marginRight: 10, padding: 5 },
  optionContainer: {
    padding: 10,
    borderBottomColor: 'grey',
    borderBottomWidth: 1
  },
  optionInnerContainer: {
    flex: 1,
    flexDirection: 'row'
  },
  box: {
    width: 20,
    height: 20,
    marginRight: 10
  }
})

GitHub