用canvas生成的图片路径，分享时，开发版测试能显示，线上显示不出来

saveImage: function () {

var that = this

wx.canvasToTempFilePath({

x: 0,

y: 0,

width: that.data.scrollWidth,

height: that.data.y,

destWidth: 500,

destHeight: 400,

canvasId: ‘shareCanvas’,

success: function (res) {

that.setData({

shareImage: res.tempFilePath

})

console.log(“生成名片shareImage:”, that.data.shareImage)

},

fail: function (res) {

console.log(“失败啦res:”, res)

}

})

},