Traffic-widget/miniprogram/pages/downloadPage/index.ts

// pages/downloadPage/index.ts
const app = getApp<IAppOption>();
let apiPay = false;// 是否调用支付成功
let t: any = undefined;
Page({

  /**
   * 页面的初始数据
   */
  data: {
  },

  toDownload() {
    if (t) t = clearTimeout(t);
    t = setTimeout(() => {
      app.getUser({
        data: {},
        success: (res: any) => {
          console.log(res);
          if (!res.RESULT) return wx.showToast({
            "title": "视频正在生成中，请耐心等待"
          })
          res.PAY ? this.downloadVideo() : this.toPAY();
        }
      })
    }, 200);

  },

  downloadVideo() {
    if (t) t = clearTimeout(t);
    t = setTimeout(() => {
      app.getVideo({
        success: (r: any) => {
          wx.showLoading({
            title: ""
          })
          wx.downloadFile({
            url: r.url,
            success: (res) => {
              wx.showLoading({
                title: ""
              })
              wx.saveVideoToPhotosAlbum({
                filePath: res.tempFilePath,
                success: () => {
                  console.log("--保存成功")
                  wx.showToast({
                    title: "保存成功",
                    icon: "none"
                  })
                },
                complete: () => {
                  wx.hideLoading();
                }
              })
            },
            complete: () => {
              wx.hideLoading();
            }
          })
        },
      })
    }, 200);
  },

  toPAY() {
    app.createOrder({
      success: (res: any) => {
        console.log('支付：', res);
        apiPay = true;
        wx.requestPayment({
          timeStamp: res.timeStamp,
          nonceStr: res.nonceStr,
          package: res.package,
          paySign: res.paySign,
          signType: res.signType,
          success() { },
          failL: () => {
            wx.showToast({
              icon: "none",
              title: "支付调用失败"
            })
            apiPay = false;
          }
        })
      }
    })
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad() {
    wx.hideHomeButton({})
  },

  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady() {

  },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow() {
    console.log("前台");
    // 如果支付成功则下载视频
    if (apiPay) this.downloadVideo();
  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide() {
    console.log("后台");
  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload() {

  },

  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh() {

  },

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom() {

  },

  /**
   * 用户点击右上角分享
   */
  onShareAppMessage() {

  }
})