微信小程序echart图表转成图片图片空白?
wxml代码: <ec-canvas id="mychart-dom-pie" canvas-id="mychart-pie" ec="{{ ecPie }}"></ec-canvas> js代码: var pieId = this.selectComponent('#mychart-pie'); pieId.canvasToTempFilePath({ x: 100, y: 200, width: 50, height: 50, destWidth: 100, destHeight: 100, fileTpye:'png', canvasId: 'mychart-pie', success(res) { console.log(res.tempFilePath); imgUrl=res.tempFilePath; wx.saveImageToPhotosAlbum({ filePath:res.tempFilePath }) }, fail(error){ console.log(error); } },this); 没有报错,保存的图片打开后空白