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react-native-longdropdown

v1.0.9

Published

适用于iOS和安卓的下拉列表

Downloads

2

Readme

插件说明

  • 纯JS组件。
  • 一份代码兼容iOS和Android。
  • 根据按钮位置自动调整下拉框弹出位置。
  • 零配置。 (当然啦,你不传选项的话会显示一个旋转的菊花)
  • 高可定制化。
  • 可通过API代码控制。 (显示、隐藏和选择)

Demo

在example里可以找到示例代码。

安装

npm install longdropdown --save

使用

基本

先Import组件:

import ModalDropdown from 'longdropdown'

作为组件使用即可:

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

作为容器使用:

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

自定义

可以通过传入以下样式属性来自定义样式:

  • style: 改变按钮的样式。
  • textStyle: 改变按钮文字样式。
  • dropdownStyle: 改变下拉框的样式.

可以通过实现renderRow方法来自定义下拉框中的选项行。

API

属性(Props)

Prop | Type | Optional | Default | Description ------------------- | -------- | -------- | --------- | ----------- disabled | bool | Yes | false | 是否禁用组件 defaultIndex | number | Yes | -1 | 初始选择. -1: 未选中. 这个只会影响选项展示的高亮与否,不会改变初始的按钮文字。若要改变按钮初始文字请参考defaultValue. defaultValue | string | Yes | Please select... | 按钮初始文字. options | array | Yes | | 选项。 null/undefined则下拉框会显示一个加载图标。 animated | bool | Yes | true | Disable / enable fade animation. showsVerticalScrollIndicator | bool | Yes | true | Show / hide vertical scroll indicator. style | object | Yes | | 按钮样式。 textStyle | object | Yes | | 按钮文字样式。 Invalid in wrapper mode. dropdownStyle | object | Yes | | Style of the dropdown list. adjustFrame | func | Yes | | This is a callback after the frame of the dropdown have been calculated and before showing. You will receive a style object as argument with some of the props like width height top left and right. Change them to appropriate values that accord with your requirement and make the new style as the return value of this function. renderRow | func | Yes | | Customize render option rows. Will render a default row if null/undefined. renderSeparator | func | Yes | | Customize render dropdown list separators. Will render a default thin gray line 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. accessible | bool | Yes | true | Set accessibility of dropdown modal and dropdown rows

Methods

Method | Description ----------------- | ----------- 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. Select -1 will reset it to display defaultValue. Won't trigger onSelect.

Next version

Any suggestion is welcome.