ChartView.js
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'use strict';
import React, {Component} from 'react';
import {
WebView,
StyleSheet,
View,
Text,
} from 'react-native';
export default class ChartView extends Component {
constructor(props) {
super(props)
}
render() {
let xString = '';
if (this.props.xData.length!==0) {
xString = this.props.xData.reduce((previous, current, index, array) => {
if (index==1) {
previous = `\'` + previous + `\'`;
}
return previous + ','+ `\'` + current+ `\'`;
});
}
// xString = '\'' + xString;
console.log(xString);
const HTML = getHTMLString(xString,this.props.yData.toString());
console.log(this.props.yData);
return(
<View style={styles.container}>
<Text style={styles.titleStyle}>{this.props.chartTitle}</Text>
<WebView
style={styles.chartStyle}
bounces={false}
automaticallyAdjustContentInsets={true}
source={{html:HTML}}
scalesPageToFit={true}
startInLoadingState={false}
javaScriptEnabled={true}
/>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
backgroundColor: 'white',
},
titleStyle: {
fontSize: 14,
color: '#b1b1b1',
marginTop: 20,
marginLeft: 15,
},
chartStyle: {
height: 175,
marginLeft: -45,
marginRight: -45,
marginBottom: 15,
},
});
function getHTMLString(xData,yData) {
const HTML = `
<!DOCTYPE html>
<html style="height: 100%">
<head>
<meta charset="utf-8">
</head>
<body style="height: 100%; margin: 0">
<div id="container" style="height: 100%"></div>
<script type="text/javascript" src="http://cdn.bootcss.com/echarts/3.0.0/echarts.min.js"></script>
<script type="text/javascript">
var dom = document.getElementById("container");
var myChart = echarts.init(dom);
var app = {};
option = null;
option = {
title: {
show: false,
},
xAxis: {
type: 'category',
boundaryGap: true,
axisLine: {
show: true,
onZero: false,
lineStyle: {
width: 1,
color: 'gray',
},
},
axisTick: {
show:false,
},
axisLabel: {
textStyle: {
color: '#b1b1b1',
fontSize: 24,
},
},
splitLine: {
show: false,
},
data:[`+xData+`]
},
yAxis: {
type: 'value',
axisLine: {
show: false,
onZero: false,
},
axisTick: {
show:false,
},
axisLabel: {
show: false,
},
},
tooltip: {
show: true,
showContent: true,
trigger: 'axis',
alwaysShowContent: 'true',
position: function (point,params,dom) {
return [point[0]/7*7-40,0];
},
backgroundColor: 'orange',
formatter: '{c}',
textStyle: {
fontSize: 24,
},
axisPointer: {
type: 'line',
lineStyle: {
opacity: 1,
},
},
extraCssText: 'box-shadow: 0 0 3px rgba(0, 0, 0, 0.3);',
padding:[10,20],
},
series: [
{
type:'line',
lineStyle: {
normal: {
color: 'orange',
},
},
smooth: true,
data:[` + yData + `],
},
]
};
if (option && typeof option === "object") {
myChart.setOption(option, true);
}
</script>
</body>
</html>
`;
return HTML;
}