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@p2m/react-native-echarts

v1.0.1

Published

reactnative的echarts组件

Readme

@p2m/react-native-echarts

一个webview封装的图表组件。基于百度echarts4,相比native-echarts有echarts自带对象支持,例如渐变色等,用法与官网相同用法。

echarts version 4.2.1

注:react-native 最近几个版本 webview 包改动频繁,安装时请注意需要固定webview的版本,要不然会出现web与react-native通信的问题,导致api无反应,请仔细阅读安装步骤。

安装步骤

1. 安装依赖

  • react-native >= 0.60.2

    yarn add react-native-secharts react-native-webview@androidx

    或者

    npm install react-native-secharts react-native-webview@androidx --save

    安装完成后在android/gradle.properties文件添加2行配置,确保在项目中启用AndroidX

    注:0.60+采用自动link 安装后不需要进行link

    android.useAndroidX=true
    android.enableJetifier=true
  • react-native >= 0.57 && react-native < 0.60.2

    yarn add [email protected] [email protected]
    react-native link react-native-webview

    或者

    npm install [email protected] [email protected] --save
    react-native link react-native-webview
  • react-native = 0.56

    yarn add [email protected]

    或者

    npm install [email protected] --save
  • react-native < 0.56

    yarn add [email protected]

    或者

    npm install [email protected] --save

2. 引用组件

import {Echarts, echarts} from '@p2m/react-native-echarts';
  • 大写开头的Echarts是组件
  • 小写开头的echarts是echarts对象

3. 使用组件

<Echarts option={{}} height={400}/>

请看example文件夹中示例代码

链接:https://github.com/Shanghai-P2M/react-native-echarts/tree/master/example

运行示例

$ cd example
$ yarn
$ react-native run-ios  或者 $ react-native run-android  

option具体配置请参考echarts官网api http://echarts.baidu.com/api.html#echarts

官方示例 http://echarts.baidu.com/examples/

props

| 属性 | 类型 | 默认值 | 备注 | | ------------- | ------- | ------------- | ------------- | | option | obj | null | echarts配置项,请参考echarts官网 | | backgroundColor | string | 'rgba(0,0,0,0)' | 图表画布背景色 | | width | number | 'auto' | 画布宽度 | | height | number | 400 | 画布高度 | | renderLoading | func | ()=><View style={{backgroundColor: 'rgba(0,0,0,0)'}}/> | loading时遮罩 | | onPress | func | (e)=>{} | 点击事件 |

实例方法

| 方法名称 | 参数 | 备注 | | ------------- | ------- | ------------- | | setOption | (option: Object, notMerge?: boolean, lazyUpdate?: boolean) | 参数参考:http://echarts.baidu.com/api.html#echartsInstance.setOption | | getImage | (base64)=>{} | 返回函数的参数base64,可结合RNFS写入相册 | | clear | 无 | 清空echarts画布 |

已知bug 和 需要注意的点

bug

  • echarts配置项内所有的函数均无法被new function() 或者 eval()重新还原为函数, 这个bug只能找到echarts源码内的方法进行修改,后续找到地方会进行修复,请不要在提类似的bug。

注意

  • 实例方法setOption不会保存修改后的option,这意味着在react 执行setState操作后重新render,当前state的状态会重新覆盖webview内setOption的状态,所以不推荐使用。

  • 目前已经修复组件因为onload发生的闪烁,这意味着可以不用组件setOption的实例方法,直接通过修改当容器组件的绑定的state值,setState操作,然后secharts组件会监听 state中option的改变,来进行option修改。当然组件实例方法setOption还是可以使用的,只是有bug,不推荐而已。

  • setOption中notMerge值为true,防止echart图合并两个数据