react-native实现树结构选择组件

悠悠 2022-05-22 06:35 315阅读 0赞

# react-native-tree-select #

react-native-tree-select,树结构选择组件,通过层级展示数据,能够进行多选和单选,进行自定义节点样式等.

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![演示案例2][2]=![演示案例][20190904230224873.gif]

项目结构

--components： treeSelect组件
    --treeSelectExample： 组件演示代码
    --.gitignore：git忽略文件
    --README.md：说明文档

## 1.使用说明: ##

1.基本用法

首先能够通过如下命令进行安装

npm i react-native-tree-select

然后通过下面命令进行导入：

import TreeSelect from 'react-native-tree-select';

如下代码是简单的使用

import TreeSelect from 'react-native-tree-select';
    
       ...
      render() { 
        return (
            <TreeSelect
                data={ treeselectData}
                // isOpen
                // openIds={['A01']}
                defaultSelectedId={ ['B062']}
                isShowTreeId={ false}
                // selectType="single"
                selectType="multiple"
                itemStyle={ { 
                  // backgroudColor: '#8bb0ee',
                  fontSize: 12,
                  color: '#995962'
                }}
                selectedItemStyle={ { 
                  backgroudColor: '#f7edca',
                  fontSize: 16,
                  color: '#171e99'
                }}
                onClick={ this._onClick}
                onClickLeaf={ this._onClickLeaf}
                treeNodeStyle={ { 
                  // openIcon: <Icon size={18} color="#171e99" style={ { marginRight: 10 }} name="ios-arrow-down" />,
                  // closeIcon: <Icon size={18} color="#171e99" style={ { marginRight: 10 }} name="ios-arrow-forward" />
                  openIcon: <Image
                    resizeMode="stretch"
                    style={ {  width: 18, height: 18 }}
                    source={ require('./images/down-circle.png')} />,
                  closeIcon: <Image
                    resizeMode="stretch"
                    style={ {  width: 18, height: 18 }}
                    source={ require('./images/right-circle.png')} />
                }}
              />
        );
      }

注意：数据结构如下面形式：

[
      { 
        "id":"A",
        "name":"农、林、牧、渔业",
        "sortNo":"A",
        "parentId":"0",
        "children": [
          { 
            "id":"A01",
            "name":"农业",
            "sortNo":"A01",
            "parentId":"A",
            "children": [
              { 
                "id":"A011",
                "name":"谷物种植",
                "sortNo":"A011",
                "parentId":"A01"
              },
              { 
                "id":"A012",
                "name":"豆类、油料和薯类种植",
                "sortNo":"A012",
                "parentId":"A01"
              },
              { 
                "id":"A013",
                "name":"棉、麻、糖、烟草种植",
                "sortNo":"A013",
                "parentId":"A01"
              },
              { 
                "id":"A014",
                "name":"蔬菜、食用菌及园艺作物种植",
                "sortNo":"A014",
                "parentId":"A01"
              },
              { 
                "id":"A015",
                "name":"水果种植",
                "sortNo":"A015",
                "parentId":"A01"
              },
              { 
                "id":"A016",
                "name":"坚果、含油果、香料和饮料作物种植",
                "sortNo":"A016",
                "parentId":"A01"
              },
              { 
                "id":"A017",
                "name":"中药材种植",
                "sortNo":"A017",
                "parentId":"A01"
              }
            ]
          }
        ]
      },
      { 
        "id":"B",
        "name":"采矿业",
        "sortNo":"B",
        "parentId":"0",
        "children": [
          { 
            "id":"B06",
            "name":"煤炭开采和洗选业",
            "sortNo":"B06",
            "parentId":"B",
            "children": [
              { 
                "id":"B061",
                "name":"烟煤和无烟煤开采洗选",
                "sortNo":"B061",
                "parentId":"B06"
              },
              { 
                "id":"B062",
                "name":"褐煤开采洗选",
                "sortNo":"B062",
                "parentId":"B06"
              },
              { 
                "id":"B069",
                "name":"其他煤炭采选",
                "sortNo":"B069",
                "parentId":"B06"
              }
            ]
          }
        ]
      }
    ]

## 2.传递的Props: ##

<table> 
 <thead> 
  <tr> 
   <th align="left">Props</th> 
   <th align="left">Explain</th> 
   <th align="left">type</th> 
   <th align="left">require</th> 
   <th align="left">default</th> 
   <th align="left"></th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td align="left">data</td> 
   <td align="left">数据，树结构数据</td> 
   <td align="left">array</td> 
   <td align="left">yes</td> 
   <td align="left">[]</td> 
   <td align="left">-</td> 
  </tr> 
  <tr> 
   <td align="left">onClick</td> 
   <td align="left">点击时的事件，返回点击的节点和节点路径{ item, routes, currentNode }</td> 
   <td align="left">function</td> 
   <td align="left">no</td> 
   <td align="left">no</td> 
   <td align="left">currentNode为当前选中的节点</td> 
  </tr> 
  <tr> 
   <td align="left">onClickLeaf</td> 
   <td align="left">点击叶子节点时的事件，返回点击的节点和节点路径{ item, routes, currentNode }</td> 
   <td align="left">function</td> 
   <td align="left">no</td> 
   <td align="left">no</td> 
   <td align="left">currentNode为当前选中的节点</td> 
  </tr> 
  <tr> 
   <td align="left">isOpen</td> 
   <td align="left">是否默认打开所有的节点,优先级高于openIds，当true时忽略openIds</td> 
   <td align="left">boolean</td> 
   <td align="left">no</td> 
   <td align="left">false</td> 
   <td align="left">-</td> 
  </tr> 
  <tr> 
   <td align="left">openIds</td> 
   <td align="left">指定默认打开的节点id</td> 
   <td align="left">array</td> 
   <td align="left">no</td> 
   <td align="left">[]</td> 
   <td align="left">-</td> 
  </tr> 
  <tr> 
   <td align="left">defaultSelectedId</td> 
   <td align="left">指定默认选中的节点id</td> 
   <td align="left">array</td> 
   <td align="left">no</td> 
   <td align="left">[]</td> 
   <td align="left">-</td> 
  </tr> 
  <tr> 
   <td align="left">selectType</td> 
   <td align="left">指定选择的类型</td> 
   <td align="left">string</td> 
   <td align="left">no</td> 
   <td align="left">‘single’,可传递single/multiple</td> 
   <td align="left">-</td> 
  </tr> 
  <tr> 
   <td align="left">leafCanBeSelected</td> 
   <td align="left">指定只能够选择叶子节点</td> 
   <td align="left">boolean</td> 
   <td align="left">false</td> 
   <td align="left">-</td> 
   <td align="left">-</td> 
  </tr> 
  <tr> 
   <td align="left">isShowTreeId</td> 
   <td align="left">指定是否显示节点id</td> 
   <td align="left">boolean</td> 
   <td align="left">no</td> 
   <td align="left">false</td> 
   <td align="left">-</td> 
  </tr> 
  <tr> 
   <td align="left">itemStyle</td> 
   <td align="left">指定item项的样式,其中包含三个子项backgroudColor：背景的颜色, fontSize：字体大小, color：字体的颜色</td> 
   <td align="left">css style</td> 
   <td align="left">no</td> 
   <td align="left">{}</td> 
   <td align="left">-</td> 
  </tr> 
  <tr> 
   <td align="left">selectedItemStyle</td> 
   <td align="left">指定点击按钮选中时的样式,其中包含三个子项backgroudColor：选中时的颜色, fontSize：选中时的字体大小, color：选中时字体的颜色</td> 
   <td align="left">css style</td> 
   <td align="left">no</td> 
   <td align="left">{}</td> 
   <td align="left">-</td> 
  </tr> 
  <tr> 
   <td align="left">treeNodeStyle</td> 
   <td align="left">指定节点处的图标样式，包含两个属性openIcon，closeIcon,支持传icon和image类型</td> 
   <td align="left">object</td> 
   <td align="left">no</td> 
   <td align="left">null</td> 
   <td align="left">-</td> 
  </tr> 
 </tbody> 
</table>

## 3.本地运行 ##

在本地运行，首先得克隆该项目，使用下面命令进行克隆，[克隆地址][Link 1]  
先克隆该项目

git clone https://github.com/suwu150/react-native-tree-select.git

然后进入项目，cd treeSelectExample进入到演示项目，通过以下命令安装依赖

npm install

通过以下命令运行项目

react-native run-ios

## 4.组件简介 ##

能够按照数据结构进行展开树状结构，通常用来进行展示具有明显层级关系的数据结构,展示的同时,能够进行指定默认值展开和默认选中值,能够进行单选和多选操作,进行通过传递props禁止选择等功能.

[2]: https://img-blog.csdnimg.cn/20190904230317405.gif
[20190904230224873.gif]: /images/20220522/350c95374a34498ea1202cc23678a28c.png
[Link 1]: https://github.com/suwu150/react-native-tree-select