微信小程序跑步计时器

firstStep:run.wxml

<view class="head" style="flex-direction:row;">
    <image class="icon" src="/resources/joyrun.png" mode="aspectFill"/>
    <button class="run-button" bindtap="openLocation">打开位置</button>
    <button class="run-button" bindtap="starRun">开始跑步</button>
    <button  class="run-button" bindtap="stopRun">暂停跑步</button>
    <text>\n里程数：{{meters}}km</text>
    <text>\n\n时间：{{time}}</text>
</view>

<view class="mainView">
   <map
        class="mapView"
        style="width: 100%; height: 375px;"
        latitude="{{latitude}}"
        longitude="{{longitude}}"
        markers="{{markers}}"
        covers="{{covers}}"
        >
    </map>

</view>

secondStep: run.wxss

.mapView{
  align-items: center;
}

.page {
  ">#fbf9fe;
  height: 100%;
}
.container {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  justify-content: space-between;
}
.page-header {
  display: flex;
  font-size: 32rpx;
  color: #aaa;
  margin-top: 50rpx;
  flex-direction: column;
  align-items: center;
}
.page-header-text {
  padding: 20rpx 40rpx;
}
.page-header-line {
  width: 150rpx;
  height: 1px;
  border-bottom: 1px solid #ccc;
}

.page-body {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-grow: 1;
  overflow-x: hidden;
}
.page-body-wrapper {
  margin-top: 100rpx;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}
.page-body-wrapper form {
  width: 100%;
}
.page-body-wording {
  text-align: center;
  padding: 200rpx 100rpx;
}
.page-body-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  ">#fff;
  margin-bottom: 50rpx;
  width: 100%;
  padding: 50rpx 0 150rpx 0;
}
.page-body-title {
  margin-bottom: 100rpx;
  font-size: 32rpx;
}
.page-body-text {
  font-size: 30rpx;
  line-height: 26px;
  color: #ccc;
}
.page-body-text-small {
  font-size: 24rpx;
  color: #000;
  margin-bottom: 100rpx;
}
.page-body-form {
  width: 100%;
  ">#fff;
  display: flex;
  flex-direction: column;
  width: 100%;
  border: 1px solid #eee;
}
.page-body-form-item {
  display: flex;
  align-items: center;
  margin-left: 30rpx;
  border-bottom: 1px solid #eee;
  height: 88rpx;
  font-size: 34rpx;
}
.page-body-form-key {
  width: 180rpx;
  color: #000;
}
.page-body-form-value {
  flex-grow: 1;
}
.page-body-form-value .input-placeholder {
  color: #b2b2b2;
}

.page-body-form-picker {
  display: flex;
  justify-content: space-between;
  height: 100rpx;
  align-items: center;
  font-size: 36rpx;
  margin-left: 20rpx;
  padding-right: 20rpx;
  border-bottom: 1px solid #eee;
}
.page-body-form-picker-value {
  color: #ccc;
}

.page-body-buttons {
  width: 100%;
}
.page-body-button {
  margin: 25rpx;
}
.page-body-button image {
  width: 150rpx;
  height: 150rpx;
}
.page-footer {
  text-align: center;
  color: #1aad19;
  font-size: 24rpx;
  margin: 20rpx 0;
}

.green{
    color: #09BB07;
}
.red{
    color: #F76260;
}
.blue{
    color: #10AEFF;
}
.yellow{
    color: #FFBE00;
}
.gray{
    color: #C9C9C9;
}

.strong{
    font-weight: bold;
}

.bc_green{
    ">#09BB07;
}
.bc_red{
    ">#F76260;
}
.bc_blue{
    ">#10AEFF;
}
.bc_yellow{
    ">#FFBE00;
}
.bc_gray{
    ">#C9C9C9;
}

.tc{
    text-align: center;
}

.page input{
    padding: 20rpx 30rpx;
    ">#fff;
}
checkbox, radio{
    margin-right: 10rpx;
}

.btn-area{
    padding: 0 30px;
}
.btn-area button{
    margin-top: 20rpx;
    margin-bottom: 20rpx;
}

.page {
    min-height: 100%;
    flex: 1;
    ">#FBF9FE;
    font-size: 32rpx;
    font-family: -apple-system-font,Helvetica Neue,Helvetica,sans-serif;
    overflow: hidden;
}
.page__hd{
    padding: 50rpx 50rpx 100rpx 50rpx;
    text-align: center;
}
.page__title{
    display: inline-block;
    padding: 20rpx 40rpx;
    font-size: 32rpx;
    color: #AAAAAA;
    border-bottom: 1px solid #CCCCCC;
}
.page__desc{
    display: none;
    margin-top: 20rpx;
    font-size: 26rpx;
    color: #BBBBBB;
}

.section{
    margin-bottom: 80rpx;
}
.section_gap{
    padding: 0 30rpx;
}
.section__title{
    margin-bottom: 16rpx;
    padding-left: 30rpx;
    padding-right: 30rpx;
}
.section_gap .section__title{
    padding-left: 0;
    padding-right: 0;
}

.run-button {
  ">bisque;
}

thirdStep: run.json

{
    "navigationBarTitleText": "跑步计时器"
}

fourStep: run.js

var countTooGetLocation = 0;
var total_micro_second = 0;
var starRun = 0;
var totalSecond  = 0;
var oriMeters = 0.0;
/* 毫秒级倒计时 */
function count_down(that) {

    if (starRun == 0) {
      return;
    }

    if (countTooGetLocation >= 100) {
      var time = date_format(total_micro_second);
      that.updateTime(time);
    }

      if (countTooGetLocation >= 5000) { //1000为1s
        that.getLocation();
        countTooGetLocation = 0;
      }   

      setTimeout(function(){
        countTooGetLocation += 10;
    total_micro_second += 10;
        count_down(that);
    }
    ,10
    )
}

// 时间格式化输出，如03:25:19 86。每10ms都会调用一次
function date_format(micro_second) {
      // 秒数
      var second = Math.floor(micro_second / 1000);
      // 小时位
      var hr = Math.floor(second / 3600);
      // 分钟位
      var min = fill_zero_prefix(Math.floor((second - hr * 3600) / 60));
      // 秒位
    var sec = fill_zero_prefix((second - hr * 3600 - min * 60));// equal to => var sec = second % 60;

    return hr + ":" + min + ":" + sec + " ";
}

function getDistance(lat1, lng1, lat2, lng2) {
    var dis = 0;
    var radLat1 = toRadians(lat1);
    var radLat2 = toRadians(lat2);
    var deltaLat = radLat1 - radLat2;
    var deltaLng = toRadians(lng1) - toRadians(lng2);
    var dis = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(deltaLat / 2), 2) + Math.cos(radLat1) * Math.cos(radLat2) * Math.pow(Math.sin(deltaLng / 2), 2)));
    return dis * 6378137;

    function toRadians(d) {  return d * Math.PI / 180;}
} 

function fill_zero_prefix(num) {
    return num < 10 ? "0" + num : num
}

//****************************************************************************************
//****************************************************************************************

Page({
  data: {
    clock: '',
    isLocation:false,
    latitude: 0,
    longitude: 0,
    markers: [],
    covers: [],
    meters: 0.00,
    time: "0:00:00"
  },

//****************************
  onLoad:function(options){
    // 页面初始化 options为页面跳转所带来的参数
    this.getLocation()
    console.log("onLoad")
    count_down(this);
  },
  //****************************
  openLocation:function (){
    wx.getLocation({
      type: 'gcj02', // 默认为 wgs84 返回 gps 坐标，gcj02 返回可用于 wx.openLocation 的坐标
      success: function(res){
          wx.openLocation({
            latitude: res.latitude, // 纬度，范围为-90~90，负数表示南纬
            longitude: res.longitude, // 经度，范围为-180~180，负数表示西经
            scale: 28, // 缩放比例
          })
      },
    })
  },

//****************************
  starRun :function () {
    if (starRun == 1) {
      return;
    }
    starRun = 1;
    count_down(this);
    this.getLocation();
  },

 //****************************
  stopRun:function () {
    starRun = 0;
    count_down(this);
  },

//****************************
  updateTime:function (time) {

    var data = this.data;
    data.time = time;
    this.data = data;
    this.setData ({
      time : time,
    })

  },

//****************************
  getLocation:function () {
    var that = this
    wx.getLocation({

      type: 'gcj02', // 默认为 wgs84 返回 gps 坐标，gcj02 返回可用于 wx.openLocation 的坐标
      success: function(res){
        console.log("res----------")
        console.log(res)

        //make datas
        var newCover = {
            latitude: res.latitude,
            longitude: res.longitude,
            iconPath: '/resources/redPoint.png',
          };
        var oriCovers = that.data.covers;

        console.log("oriMeters----------")
        console.log(oriMeters);
        var len = oriCovers.length;
        var lastCover;
        if (len == 0) {
          oriCovers.push(newCover);
        }
        len = oriCovers.length;
        var lastCover = oriCovers[len-1];

        console.log("oriCovers----------")
        console.log(oriCovers,len);

        var newMeters = getDistance(lastCover.latitude,lastCover.longitude,res.latitude,res.longitude)/1000;

        if (newMeters < 0.0015){
            newMeters = 0.0;
        }

        oriMeters = oriMeters + newMeters;
        console.log("newMeters----------")
        console.log(newMeters);

        var meters = new Number(oriMeters);
        var showMeters = meters.toFixed(2);

        oriCovers.push(newCover);

        that.setData({
          latitude: res.latitude,
          longitude: res.longitude,
          markers: [],
          covers: oriCovers,
          meters:showMeters,
        });
      },
    })
  }

})