Implement sharing function in uni-app applet

1. Configure sharing-related information in the manifest.json file, including sharing titles, sharing pictures, etc.

code show as below:

{
  "mp-weixin": {
    "appid": "yourAppId",
    "share": {
      "title": "分享标题",
      "imageUrl": "/static/share.png"
    }
  }
}

2. In the page that needs to trigger sharing, use the uni.navigateToMiniProgram() method to open the sharing page.

// 在当前页面中触发分享
uni.navigateToMiniProgram({
  appId: '要分享到的小程序的AppID',
  path: '要跳转到的页面路径',
  extraData: {
    // 可以携带一些额外的数据，在被分享的小程序中可以通过wx.getLaunchOptionsSync()获取
    // 如：{from: 'uni-app'}
  },
  success(res) {
    // 分享成功回调
    console.log(res)
  },
  fail(err) {
    // 分享失败回调
    console.log(err)
  }
})

 3. In the shared applet, you can obtain the additional data carried during sharing through wx.getLaunchOptionsSync().

// 在被分享的小程序中获取额外数据
const launchOptions = wx.getLaunchOptionsSync()
console.log(launchOptions)