onLoad(){

 wx.onShareAppMessage(() => {

            return {

                title: "水果合成2021",

                imageUrl: 'http://xxx/xg.jpg'

            }

        })

        wx.onShareTimeline(() => {

            return {

                title: '水果合成2021',

                imageUrl: 'http://xxx.com/xg.jpg'

            }

        })

 

}