A Picker Component For React Native Which Emulates The Native Select Interfaces

react-native-picker-select

A Picker component for React Native which emulates the native <select> interfaces for iOS and Android

For iOS, by default we are wrapping an unstyled TextInput component. You can then pass down styles to customize it to your needs.

For Android, by default we are using the native Picker component. If you prefer, you can set useNativeAndroidPickerStyle to false, which will also render an unstyled TextInput component. You can then pass down styles to customize it to your needs.

For either platform, you can alternatively pass down a child element of your choice that will be wrapped in a touchable area.

Getting Started

Installing

npm install react-native-picker-select

Basic Usage

import RNPickerSelect from 'react-native-picker-select';

export const Dropdown = () => {
    return (
        <RNPickerSelect
            onValueChange={(value) => console.log(value)}
            items={[
                { label: 'Football', value: 'football' },
                { label: 'Baseball', value: 'baseball' },
                { label: 'Hockey', value: 'hockey' },
            ]}
        />
    );
};

Versioning

Component	React
>= 3.0.0	>= 16.3
< 3.0.0	< 16.3

Props

Name	Description	Details
`onValueChange`	Callback which returns `value, index`	required
function
`items`	The items for the component to render

Each item should be in the following format:
{label: 'Orange', value: 'orange', key: 'orange', color: 'orange', displayValue: true}
label and value are required
key, color, and displayValue are optional
key will be set to equal label if not included
value can be any data type
If displayValue is truthy, the TextInput will display the value instead of the label | required
array |
| placeholder | - An override for the default placeholder object with a label of Select an item... and a value of null
An empty object can be used if you’d like to disable the placeholder entirely | object |
| disabled | Disables interaction with the component | boolean |
| value | Will attempt to locate a matching item from the items array by checking each item’s value property. If found, it will update the component to show that item as selected. If the value is not found, it will default to the first item. | any |
| itemKey | Will attempt to locate a matching item from the items array by checking each item’s key property. If found, it will update the component to show that item as selected. If the key is not found, it will attempt to find a matching item by value as above. | string, number |
| style | Style overrides for most parts of the component.
More details in styling | object |
| pickerProps | Additional props to pass to the Picker (some props are used in core functionality so use this carefully) | object |
| Icon | Custom icon component to be rendered.
More details in styling | Component |
| textInputProps | Additional props to pass to the TextInput (some props are used in core functionality so use this carefully). This is iOS only unless useNativeAndroidPickerStyle={false}. | object |
| touchableWrapperProps | Additional props to pass to the touchable wrapping the TextInput (some props are used in core functionality so use this carefully) | object |
| onOpen
| Callback triggered right before the opening of the picker
Not supported when useNativeAndroidPickerStyle={true} | function |
| useNativeAndroidPickerStyle
Android only | The component defaults to using the native Android Picker in its un-selected state. Setting this flag to false will mimic the default iOS presentation where a tappable TextInput is displayed.
More details in styling | boolean |
| InputAccessoryView
iOS only | Replace the InputAcessoryView section (bar with tabbing arrown and Done button) of the opened picker with your own custom component. Can also return null here to hide completely. While this bar is typical on select elements on the web, the interface guidelines does not include it. View the snack to see examples on how this can be customized. | Component |
| doneText
iOS only | “Done” default text on the modal. Can be overwritten here | string |
| onUpArrow / onDownArrow
iOS only | Presence enables the corresponding arrow
Closes the picker
Calls the callback provided | function |
| onDonePress
iOS only | Callback when the ‘Done’ button is pressed | function |
| onClose
iOS only | Callback triggered right before the closing of the picker | function |
| modalProps
iOS only | Additional props to pass to the Modal (some props are used in core functionality so use this carefully) | object |
| touchableDoneProps
iOS only | Additional props to pass to the Done touchable (some props are used in core functionality so use this carefully) | object |

Styling

All properties mentioned below must be nested under the style prop. Examples of different styling options can be found on the example snack.

iOS-specific

The component wraps a TextInput without styling. You can target the TextInput styling with inputIOS.
Other styles that can be modified for iOS are named inputIOSContainer, placeholder, viewContainer, chevronContainer, chevron, chevronUp, chevronDown, chevronActive, done, modalViewTop, modalViewMiddle, and modalViewBottom

Android-specific

The native Picker in its inactive state acts looks similar to a TextInput, but it has limitations on custom styling. Any styling that is possible can be applied via inputAndroid.
You can add some styling customization to the active-state native Picker, but that requires modifying some xml files
If you set the prop useNativeAndroidPickerStyle to false, the component will allow a few other style objects: inputAndroidContainer, placeholder, and inputAndroid
Other styles that can be modified for Android are named headlessAndroidContainer and viewContainer

Icon

If a component is passed in via the Icon prop - it will be rendered with { position: 'absolute', right: 0 } applied to its wrapping container. You can modify these values and add additional spacing to position the icon as needed by modifying iconContainer. You’ll probably also want to add some paddingRight to your input styling to avoid any longer text appearing behind the icon.
You can pass a component of your choosing (css, image, svg, etc…) for use as the icon. For ease of use, consider a library such as react-native-shapes or react-native-vector-icons.
Examples of different icons and their usage can be found on the example snack.

Testing

This component has been tested on React Native v0.51 - v0.61

Download Details:

Author: lawnstarter

GitHub: https://github.com/lawnstarter/react-native-picker-select

#react-native #react #mobile-apps