要求
选项卡每切换一次,就加载对应的一个echarts 图,要有一开始的动画效果
效果如下:
注意点
1、echarts要想每次都能重新加载,需要移除"_echarts_instance_"属性,否则一切换选项卡,就再也加载不出来了
2、在ts 中获取html 页面元素,不能写在构造方法里,应该写在ionViewDidEnter()方法里
3、选项卡
4、不能直接将chart作为全局变量,这样的话第二次加载就没有动画效果了
献上代码
html文件
<ion-header> <ion-navbar> <ion-title>区域ion-title> ion-navbar> ion-header> <ion-content padding> <ion-segment [(ngModel)]="choice" (ionChange)="segmentChanged($event)"> <ion-segment-button value="choice1"> 省份增速排名 ion-segment-button> <ion-segment-button value="choice2"> 市州增速排名 ion-segment-button> <ion-segment-button value="choice3"> 全省走势 ion-segment-button> <ion-segment-button value="choice4"> 市州占比 ion-segment-button> ion-segment> <div id="chartContainer" style="width: 100%; height: 300px;">div> ion-content>
ts文件
import {Component} from '@angular/core'; import * as echarts from 'echarts'; @Component({ selector: 'page-data-area', templateUrl: 'area.html' }) export class DataAreaPage { choice: string = "choice1"; ec: any = echarts; chartContainer: any; constructor() { } clickChart1() { const chart1 = this.ec.init(this.chartContainer); chart1.setOption({ series: { type: 'pie', data: [{ name: 'A', value: 10 }, { name: 'B', value: 20 }, { name: 'C', value: 30 }, { name: 'D', value: 40 }] } }, true); this.chartContainer.removeAttribute("_echarts_instance_"); } clickChart2() { const chart2 = this.ec.init(this.chartContainer); chart2.setOption({ series: { type: 'pie', data: [{ name: 'A', value: 10 }, { name: 'B', value: 20 }, { name: 'C', value: 30 }] } }, true); this.chartContainer.removeAttribute("_echarts_instance_"); } clickChart3() { const chart3 = this.ec.init(this.chartContainer); chart3.setOption({ series: { type: 'pie', data: [{ name: 'A', value: 10 }, { name: 'B', value: 20 }, { name: 'C', value: 30 }, { name: 'D', value: 40 }, { name: 'E', value: 50 }] } }, true); this.chartContainer.removeAttribute("_echarts_instance_"); } clickChart4() { const chart4 = this.ec.init(this.chartContainer); chart4.setOption({ series: { type: 'pie', data: [{ name: 'A', value: 10 }, { name: 'B', value: 20 }, { name: 'C', value: 30 }, { name: 'D', value: 40 }, { name: 'E', value: 50 }, { name: 'F', value: 60 }] } }, true); this.chartContainer.removeAttribute("_echarts_instance_"); } segmentChanged(e) { if (e.value == "choice1") { this.clickChart1(); } else if (e.value == "choice2") { this.clickChart2(); } else if (e.value == "choice3") { this.clickChart3(); } else if (e.value == "choice4") { this.clickChart4(); } } ionViewDidEnter() { this.chartContainer = document.getElementById('chartContainer'); this.clickChart1(); } }
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