1. 实现效果
2. 实现步骤
- 使用三方组件 ucharts echarts 高性能跨全端图表组件
- 页面导入引入的三方组件
- 组件demo代码
<template>
<view class="qiun-columns">
<view class="cu-bar bg-white margin-top-xs">
<view class="action sub-title">
<text class="text-xl text-bold text-blue text-shadow">行政区域图</text>
<text class="text-ABC text-blue">District</text>
</view>
</view>
<view class="qiun-charts">
<canvas canvas-id="canvasMap" id="canvasMap" class="charts" :width="cWidth*pixelRatio" :height="cHeight*pixelRatio"
:style="{'width':cWidth+'px','height':cHeight+'px'}" @touchstart="touchMap"></canvas>
<canvas canvas-id="canvasMap" id="canvasMap" class="charts" @touchstart="touchMap"></canvas>
</view>
</view>
</template>
<script>
import uCharts from '@/components/u-charts/u-charts.js';
import {
isJSON
} from '@/components/u-charts/checker.js';
var _self;
var canvaMap = null;
export default {
data() {
return {
city: '',
cWidth: '',
cHeight: '',
pixelRatio: 1,
textarea: '',
}
},
onLoad() {
_self = this;
uni.getSystemInfo({
success: function(res) {
if (res.pixelRatio > 1) {
_self.pixelRatio = 2;
}
}
});
this.cWidth = uni.upx2px(750);
this.cHeight = uni.upx2px(750);
this.getServerData();
},
methods: {
getServerData() {
uni.request({
url: 'https://cdn.xxx.com/dataV.json',
data: {},
success: function(res) {
let cMap = {
series: []
};
cMap.series =res.data.features;
console.log(res.data)
_self.showMap("canvasMap", cMap);
},
fail: () => {
_self.tips = "网络错误,小程序端请检查合法域名";
},
});
},
showMap(canvasId, chartData) {
canvaMap = new uCharts({
$this: _self,
canvasId: canvasId,
type: 'map',
fontSize: 11,
padding: [0, 0, 0, 0],
legend: {
show: false
},
background: '#FFFFFF',
pixelRatio: _self.pixelRatio,
series: chartData.series,
dataLabel: true,
width: _self.cWidth * _self.pixelRatio,
height: _self.cHeight * _self.pixelRatio,
extra: {
map: {
border: true,
borderWidth: 1,
borderColor: '#666666',
fillOpacity: 0.6
}
}
});
},
touchMap(e) {
canvaMap.showToolTip(e, {
format: function(item) {
console.log(item.properties)
_self.city = item.properties.name;
return `这里是:${item.properties.name}`
}
});
}
}
}
</script>
<style>
.qiun-charts {
width: 750upx;
height: 750upx;
background-color: #FFFFFF;
}
.charts {
width: 750upx;
height: 750upx;
padding: 30rpx 0;
background-color: #FFFFFF;
}
</style>