shyaf-artist-platform-miniapp/pages/invitation/index/index.js

const { async } = require("../../../utils/runtime");
const app = getApp();
const api = app.api;
var startX = 0;
const minXOffset = 40;
Page({

  /**
   * 记录手势落点坐标
   * @param {*} event 
   */
  touchStart: function (event) {
    startX = event.touches[0].pageX;
  },

   /**
   * 手势结束计算偏移量并切换卡片
   * @param {*} event 
   */
  touchEnd: async function(event) {
    let endX = event.changedTouches[0].pageX;
    let xOffset = startX - endX;
    if (xOffset > minXOffset) {
      // 授权登录校验
      const isAuth = await app.authorization();
      if(isAuth) {
        // 查询已登记信息
        app.post(api.InvitationGet, {}).then(response => {
          if(response.success) {
            wx.redirectTo({
              url: '../navigation/index',
            })
          }
        }).catch(() => {
          wx.redirectTo({
              url: '../protocol/index',
            })
        })
      }
    }
  },

   /**
   * 手势被打断重置落点坐标
   * @param {*} event 
   */
  touchCancel: function(event) {
    startX = 0;
  },
  
  /**
   * 生命周期函数--监听页面显示
   */
  onShow: async function () {
    wx.setNavigationBarTitle({
      title: '邀请函',
    })
  },

  /** 分享设置 */
  onShareAppMessage: function(res) {
    return { title: '邀请函' }
  }
})