[GitHub] [incubator-echarts] AriaYan opened issue #8991: 安卓手机用echarts自带的保存图片无法保存

[GitHub]

<!--
为了方便我们能够复现和修复 bug，请遵从下面的规范描述您的问题。
-->


### One-line summary [问题简述]
安卓手机用echarts自带的保存图片无法保存




### Version & Environment [版本及环境]
+ ECharts version [ECharts 版本]:4.1.0
+ Browser version [浏览器类型和版本]:UC、QQ、手机自带浏览器
+ OS Version [操作系统类型和版本]:安卓





### Expected behaviour [期望结果]
能正常下载




### ECharts option [ECharts配置项]
<!-- Copy and paste your 'echarts option' here. -->
<!-- [下方贴你的option，注意不要删掉下方 ```javascript 和 尾部的 ``` 字样。最好是我们能够直接运行的 
option。如何得到能运行的 option 参见上方的 guidelines for contributing] -->
```javascript
option = {
         backgroundColor: '#fff',
          title: {},
          tooltip: {
            trigger: 'axis',
            confine: true,
          },
          toolbox: {
            show: true,
            feature: {
              saveAsImage: {
                name:'test',
                pixelRatio:1
              },
            },
            left: 20,
          },
          animation:false,
          legend: {
            top: 5,
            right: '3%',
            left: 60,
            icon: 'rect',
            itemWidth: 8,
            itemHeight: 8,
            itemGap: 10,
            data: ['a','b'],
          },
          showLoading: {
            type: 'default'
          },
          grid: {
            x: 50,
            y: 55,
            width: '90%'
      },
        xAxis: [{
          data: ['a','b']
        }],
          yAxis: [{}],
          series: [
            {
              name: 'a',
              type: 'line',
              data: [5,8],
            },
            {
              name: 'b',
              type: 'line',
              data: [35,20],
            }
          ]
}

```




### Other comments [其他信息]
<!-- For example: Screenshot or Online demo -->
<!-- [例如，截图或线上实例 (JSFiddle/JSBin/Codepen)] -->



[ Full content available at: 
https://github.com/apache/incubator-echarts/issues/8991 ]
This message was relayed via gitbox.apache.org for devnull@infra.apache.org