然后是json 

{"usingComponents": {"ec-canvas": "../../common/ec-canvas/ec-canvas"},"navigationBarTitleText": "主题活动"
}

ec-canvas获取方式 在链接里下载代码 然后copy ec-canvas文件夹到自己的项目

https://gitcode.net/mirrors/ecomfe/echarts-for-weixin?utm_source=csdn_github_accelerator&from_codechina=yeshttps://gitcode.net/mirrors/ecomfe/echarts-for-weixin?utm_source=csdn_github_accelerator&from_codechina=yes

//js里引入echarts 在page上面
import * as echarts from '../../common/ec-canvas/echarts'
Page({...})getStatisticThemeActivitiesTrend(){const that = thislet oUserInfo = this.data.userInfoutil.request(api.statisticThemeActivitiesTrend + oUserInfo.userId + '&startDate=' + that.data.startDate + '&endDate=' + that.data.endDate, '', 'get').then(res => {if (res.code == 200) {let odata = res.datathis.setData({info: odata})if(!odata.themeList || odata.themeList.length == 0){util.alert("暂无数据")return}//主要代码odata.themeList.forEach(function (item, index) {        let echartsComponnet = that.selectComponent('#area-dom-'+index);echartsComponnet.init((canvas, width, height, dpr) => {// 初始化图表const Chart = echarts.init(canvas, null, {width: width,height: height,devicePixelRatio: dpr});Chart.setOption(that.getAreaPie(item));// 注意这里一定要返回 chart 实例，否则会影响事件处理等return Chart;});          })} else {wx.showModal({title: res.msg,icon: 'error',showCancel: false,duration: 3000});}});},getAreaPie(odata) {    let option = {grid: { //图表距边框的距离top: 0,right: 30,        bottom: 0,left: 0,containLabel: false,},xAxis: {type: 'value',"splitLine": {     //网格线"show": false}},yAxis: {show : false,type: 'category',data: ['','','','']},series: [{data: [odata.countActivityNumber, odata.countPhysicalRecordNumber, odata.countDetailNumber, odata.countObservationNumber],type: 'bar',itemStyle: {   //通常情况下：normal:{  label : {show: true,position: 'right',},//每个柱子的颜色即为colorList数组里的每一项，如果柱子数目多于colorList的长度，则柱子颜色循环使用该数组color: function (params){var colorList = ['#70b603', '#00bfbf', '#027db4', '#6300bf']return colorList[params.dataIndex];}},//鼠标悬停时：emphasis: {shadowBlur: 10,shadowOffsetX: 0,shadowColor: 'rgba(0, 0, 0, 0.5)'},},}]};return option},