react-native-modal-dropdown

A react-native dropdown/picker/selector component for both Android & iOS.

Features

• Pure JS.
• Compatible with both iOS and Android.
• Auto position. (Won't be covered or clipped by the edge of screen.)
• Zero configuration. (Options are needed of course or a loading indicator will show.)
• Highly customizable.
• Controllable with API by code. (Show/Hide/Select)
• Change everything into a dropdown list trigger.

Demo

You can find them in the example.

Update History

v0.3.2

• Fix bug: #9 undefined is not an object (evaluating '_this.updatePosition.bind') in v0.3.1.
• Fix bug: Wrong width of dropdown in very few cases.

v0.3.1

• Fix bug: #6 Can not specify height style for dropdownStyle.
• Remove updatePosition function.

v0.3.0

• Auto update position before show.
• Mark updatePosition function as depreciated. (May be removed in next version.)

v0.2.0

• Add wrapper / container support

Now you can use these component as a wrapper / container. Anything wrapped in it can be the trigger of the dropdown.

Installation

npm i react-native-modal-dropdown --save

Usage

Basic

Import this module:

import ModalDropdown from 'react-native-modal-dropdown';

Use as a component:

<ModalDropdown options={['option 1', 'option 2']}/>

Use as a wrapper / container:

<ModalDropdown options={['option 1', 'option 2']}>
  ...
</ModalDropdown>

Customization

Give the style props as your choice:

• style: Change the style of the button (basic mode) / container (wrapper mode).
• textStyle: Change the style of text of the button. Invalid in wrapper mode.
• dropdownStyle: Change the style of dropdown container.

You can also render your option row by implement the renderRow function.

API

Props

Prop	Type	Optional	Default	Description
disabled	bool	Yes	false	disable/enable the component.
defaultIndex	number	Yes	-1	Init selected index. -1: None is selected. This only change the highlight of the dropdown row, you have to give a defaultValue to change the init text.
defaultValue	string	Yes	Please select...	Init text of the button. Invalid in wrapper mode.
options	arrayOf(string)	Yes		Options. The dropdown will show a loading indicator if options is null/undefined.
style	object	Yes		Style of the button.
textStyle	object	Yes		Style of the button text. Invalid in wrapper mode.
dropdownStyle	object	Yes		Style of the dropdown list.
renderRow	func	Yes		Customize render option rows. Will render a default row if null/undefined.
onDropdownWillShow	func	Yes		Trigger when dropdown will show by touching the button. Return false can cancel the event.
onDropdownWillHide	func	Yes		Trigger when dropdown will hide by touching the button. Return false can cancel the event.
onSelect	func	Yes		Trigger when option row touched with selected index and value. Return false can cancel the event.

Methods

Method	Description
updatePosition()	Depreciated since v0.3.0. May be removed in next version. Manually update the position of the dropdown. If your dropdown is within a scroll view, you have to call this method in onScroll function of the scrollView.
show()	Show the dropdown. Won't trigger onDropdownWillShow.
hide()	Hide the dropdown. Won't trigger onDropdownWillHide.
select(idx)	Select the specified option of the idx. Won't trigger onSelect.

Next version

Any suggestion is welcome. Is this necessary to open renderSeperator function of the dropdown list? Please let me know if you have this request. Thank you.