Demo已完成

app.js

+// app.js
+App({
+  onLaunch() {
+    // 展示本地存储能力
+    const logs = wx.getStorageSync('logs') || []
+    logs.unshift(Date.now())
+    wx.setStorageSync('logs', logs)
+
+    // 登录
+    wx.login({
+      success: res => {
+        // 发送 res.code 到后台换取 openId, sessionKey, unionId
+      }
+    })
+    // 获取用户信息
+    wx.getSetting({
+      success: res => {
+        if (res.authSetting['scope.userInfo']) {
+          // 已经授权，可以直接调用 getUserInfo 获取头像昵称，不会弹框
+          wx.getUserInfo({
+            success: res => {
+              // 可以将 res 发送给后台解码出 unionId
+              this.globalData.userInfo = res.userInfo
+
+              // 由于 getUserInfo 是网络请求，可能会在 Page.onLoad 之后才返回
+              // 所以此处加入 callback 以防止这种情况
+              if (this.userInfoReadyCallback) {
+                this.userInfoReadyCallback(res)
+              }
+            }
+          })
+        }
+      }
+    })
+  },
+  globalData: {
+    userInfo: null
+  }
+})

app.json

+{
+  "pages":[
+    "pages/index/index",
+    "pages/logs/logs"
+  ],
+  "window":{
+    "backgroundTextStyle":"light",
+    "navigationBarBackgroundColor": "#fff",
+    "navigationBarTitleText": "Weixin",
+    "navigationBarTextStyle":"black"
+  },
+  "style": "v2",
+  "sitemapLocation": "sitemap.json"
+}

app.wxss

+/**app.wxss**/
+.container {
+  height: 100%;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: space-between;
+  padding: 200rpx 0;
+  box-sizing: border-box;
+} 

pages/index/index.js

+// index.js
+// 获取应用实例
+const app = getApp()
+
+Page({
+  data: {
+    imgUrls:[
+      "../../images/运行 拷贝 2.png","../../images/运行 拷贝.png","../../images/运行.png","../../images/运行 拷贝 3.png","../../images/运行 拷贝 4.png"
+    ],
+    url:"../../images/运行 拷贝 2.png",
+  },
+  // 事件处理函数
+  touchStart:function(e){
+    let that=this;
+    that.setData({
+      touchStart:e.timeStamp
+    })
+  },
+  touchEnd:function(e){
+    let that=this
+    that.setData({
+      touchEnd:e.timeStamp  
+    })
+  },
+  pressTap:function(){
+    let that=this;
+    let touchTime=that.data.touchEnd-that.data.touchStart
+    let result=parseInt(touchTime/200)%4;
+    console.log(result)
+    switch(result){
+      case 0:
+        that.setData({
+          url:that.data.imgUrls[1]
+        })
+        break;
+      case 1:
+        that.setData({
+          url:that.data.imgUrls[2]
+        })
+        break;
+      case 2:
+        that.setData({
+          url:that.data.imgUrls[3]
+        })
+        break;
+      case 3:
+        that.setData({
+          url:that.data.imgUrls[4]
+        })
+        break;
+    }
+  },
+  onLoad() {
+    if (app.globalData.userInfo) {
+      this.setData({
+        userInfo: app.globalData.userInfo,
+        hasUserInfo: true
+      })
+    } else if (this.data.canIUse) {
+      // 由于 getUserInfo 是网络请求，可能会在 Page.onLoad 之后才返回
+      // 所以此处加入 callback 以防止这种情况
+      app.userInfoReadyCallback = res => {
+        this.setData({
+          userInfo: res.userInfo,
+          hasUserInfo: true
+        })
+      }
+    } else {
+      // 在没有 open-type=getUserInfo 版本的兼容处理
+      wx.getUserInfo({
+        success: res => {
+          app.globalData.userInfo = res.userInfo
+          this.setData({
+            userInfo: res.userInfo,
+            hasUserInfo: true
+          })
+        }
+      })
+    }
+  },
+  getUserInfo(e) {
+    console.log(e)
+    app.globalData.userInfo = e.detail.userInfo
+    this.setData({
+      userInfo: e.detail.userInfo,
+      hasUserInfo: true
+    })
+  }
+})

pages/index/index.json

+{
+  "usingComponents": {}
+}
\ No newline at end of file

pages/index/index.wxml

+<!--index.wxml-->
+<view class="container">
+  <view class="par">
+    <image src='../../images/＜编组＞.png' class='img absolute' mode='widthFix' bindtouchstart='touchStart' bindtouchend='touchEnd' bindtap='pressTap'></image>
+    <image src='{{url}}' class='img' id="bg"  mode='widthFix'></image>
+  </view>
+</view>
\ No newline at end of file

pages/index/index.wxss

+.par{
+  position: relative;
+}
+.img{
+  width: 250rpx;
+  height: 250rpx;
+}
+.absolute{
+  width: 100rpx;
+  position: absolute;
+  top:80rpx;
+  left: 80rpx;
+}
\ No newline at end of file

pages/logs/logs.js

+// logs.js
+const util = require('../../utils/util.js')
+
+Page({
+  data: {
+    logs: []
+  },
+  onLoad() {
+    this.setData({
+      logs: (wx.getStorageSync('logs') || []).map(log => {
+        return util.formatTime(new Date(log))
+      })
+    })
+  }
+})

pages/logs/logs.json

+{
+  "navigationBarTitleText": "查看启动日志",
+  "usingComponents": {}
+}
\ No newline at end of file

pages/logs/logs.wxml

+<!--logs.wxml-->
+<view class="container log-list">
+  <block wx:for="{{logs}}" wx:for-item="log">
+    <text class="log-item">{{index + 1}}. {{log}}</text>
+  </block>
+</view>

pages/logs/logs.wxss

+.log-list {
+  display: flex;
+  flex-direction: column;
+  padding: 40rpx;
+}
+.log-item {
+  margin: 10rpx;
+}

project.config.json

+{
+  "description": "项目配置文件",
+  "packOptions": {
+    "ignore": []
+  },
+  "setting": {
+    "urlCheck": true,
+    "es6": true,
+    "enhance": false,
+    "postcss": true,
+    "preloadBackgroundData": false,
+    "minified": true,
+    "newFeature": false,
+    "coverView": true,
+    "nodeModules": false,
+    "autoAudits": false,
+    "showShadowRootInWxmlPanel": true,
+    "scopeDataCheck": false,
+    "uglifyFileName": false,
+    "checkInvalidKey": true,
+    "checkSiteMap": true,
+    "uploadWithSourceMap": true,
+    "compileHotReLoad": false,
+    "useMultiFrameRuntime": false,
+    "useApiHook": true,
+    "babelSetting": {
+      "ignore": [],
+      "disablePlugins": [],
+      "outputPath": ""
+    },
+    "useIsolateContext": true,
+    "useCompilerModule": true,
+    "userConfirmedUseCompilerModuleSwitch": false,
+    "packNpmManually": false,
+    "packNpmRelationList": []
+  },
+  "compileType": "miniprogram",
+  "libVersion": "2.14.4",
+  "appid": "wxc74b96181be17380",
+  "projectname": "myDemo",
+  "debugOptions": {
+    "hidedInDevtools": []
+  },
+  "scripts": {},
+  "isGameTourist": false,
+  "simulatorType": "wechat",
+  "simulatorPluginLibVersion": {},
+  "condition": {
+    "search": {
+      "current": -1,
+      "list": []
+    },
+    "conversation": {
+      "current": -1,
+      "list": []
+    },
+    "game": {
+      "current": -1,
+      "list": []
+    },
+    "plugin": {
+      "current": -1,
+      "list": []
+    },
+    "gamePlugin": {
+      "current": -1,
+      "list": []
+    },
+    "miniprogram": {
+      "current": -1,
+      "list": []
+    }
+  }
+}
\ No newline at end of file

sitemap.json

+{
+  "desc": "关于本文件的更多信息，请参考文档 https://developers.weixin.qq.com/miniprogram/dev/framework/sitemap.html",
+  "rules": [{
+  "action": "allow",
+  "page": "*"
+  }]
+}
\ No newline at end of file

utils/util.js

+const formatTime = date => {
+  const year = date.getFullYear()
+  const month = date.getMonth() + 1
+  const day = date.getDate()
+  const hour = date.getHours()
+  const minute = date.getMinutes()
+  const second = date.getSeconds()
+
+  return `${[year, month, day].map(formatNumber).join('/')} ${[hour, minute, second].map(formatNumber).join(':')}`
+}
+
+const formatNumber = n => {
+  n = n.toString()
+  return n[1] ? n : `0${n}`
+}
+
+module.exports = {
+  formatTime
+}