微信小程序开发(3) 热门电影 / iVAN

在这篇微信小程序开发教程中，我们将介绍如何使用微信小程序开发热门电影及预览功能。

本文主要分为两个部分，小程序主体部分及电影主页和详情页页面部分

一、小程序主体部分

一个小程序主体部分由三个文件组成，必须放在项目的根目录，如下：

1. 小程序逻辑

App({
  onLaunch: function() {
    // Do something initial when launch.
  },
  onShow: function() {
      // Do something when show.
  },
  onHide: function() {
      // Do something when hide.
  },
  globalData: 'I am global data'
})

2. 小程序公共设置

主要注册两个页面，热门电影的主页及详情页

{
  "pages":[
    "pages/index/index",
    "pages/details/details"
  ],
  "window":{
    "backgroundTextStyle":"light",
    "navigationBarBackgroundColor": "#FF4D64",
    "navigationBarTitleText": "热门电影",
    "backgroundColor":"#FFF",
    "navigationBarTextStyle":"white"
  }
}

二、电影页面部分

小程序页面主要由以下文件组成。

本项目程序分为两个页面：主页及详情页。

主页部分

主页效果图如下

1. 页面结构

其页面结构代码如下

<loading hidden="{{loading}}">
  加载中...
</loading>
<scroll-view class="container img-content" style="height: {{windowHeight}}px; width: {{windowWidth}}px; " scroll-y="true" bindscrolltoupper="pullDownRefresh" bindscrolltolower="pullUpLoad" lower-threshold="800">
    <navigator class="list flex-box" wx:for="{{films}}" url="../details/details?title=navigate&id={{item.id}}&titles={{item.nm}}">
        <view class="list-img"><image class="img" src="{{item.img}}"></image><image class="list-play" src="../../images/i-play.png"></image></view>
        <view class="list-main flex-btn">
            <view class="list-title list-brief">
                <text>{{item.nm}}</text>
                <test class="i-imax" wx:if="{{item.imax && item['3d']}}" src="../../tests/i-imax.png">3Dimax</test>
                <test class="i-imax" wx:elif="{{item['3d']}}" src="../../images/i-play.png">3d</test>
                <test class="i-imax" wx:elif="{{item['imax']}}" src="../../tests/i-star.png">imax</test>
                <test class="i-imax" wx:else="{{item['imax']}}" src="../../images/i-stars.png">2d</test>
            </view>
            <view class="list-size" wx:if="{{!item.preSale}}"><view class="star"><view style="width: {{item.sc * 10}}%" class="stars"></view></view>{{item.sc}}</view>
            <view class="list-brief" wx:if="{{item.preSale}}"><text class="wish">{{item.wish}}人想看</text>{{item.showInfo}}</view>
            <view class="list-brief">{{item.scm}}</view>
            <view class="list-brief">{{item.dir}} {{item.star}}</view>
            <view class="list-sale"><text wx:if="{{!item.preSale}}" class="sales">购票</text><text wx:if="{{item.preSale}}" class="pre-sale">预售</text></view>
        </view>
    </navigator>
</scroll-view>

2. 样式表

样式代码如下所示

/**index.wxss**/
.flex-box{
    display: flex;
}
.flex-btn{
    flex: 1;
}
.list{
    border-bottom: 1rpx solid #e5e5e5;
    padding: 30rpx;
}
.list-img{
    width: 130rpx;
    height: 180rpx;
    margin-right: 20rpx;
    position: relative;
}
.list-img .img{
    width: 130rpx;
    height: 180rpx;
}
.list-play{
    position: absolute;
    left: 45rpx;
    top: 70rpx;
    width: 40rpx;
    height: 40rpx;
}
.list-title{
    height: 52rpx;
}
.list-title text{
    font-size: 18px;
    line-height: 52rpx;
    color: #000;
}
.i-imax{
    width: 52rpx;
    height: 28rpx;
    margin-left: 10rpx;
}
.list-size{
    height: 40rpx;
    font-size: 14px;
    color: #8a869e;
}
.list-size .star{
    width: 100rpx;
    height: 20rpx;
    background: url(../../images/i-star.png) no-repeat;
    background-size: 100rpx;
    display: inline-block;
    margin-right: 10rpx;
}
.stars{
    width: 100rpx;
    height: 20rpx;
    background: url(../../images/i-stars.png) no-repeat;
    background-size: 100rpx;
    float: left;
    margin-right: 10rpx;
}
.list-brief{
    font-size: 12px;
    line-height: 48rpx;
    color: #666;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    width: 400rpx;
}
.list-brief .wish{
    color: #108ee9;
    border-right: 1rpx solid #666;
    padding-right: 10rpx;
    margin-right: 10rpx;
}
.list-main{
    position: relative;
}
.list-sale{
    position: absolute;
    right: 10rpx;
    top: 70rpx;
}
.list-sale text{
    padding: 10rpx 18rpx;
    border: 1rpx solid #37b7ff;
    font-size: 14px;
    color: #37b7ff;
    border-radius: 6rpx;
}
.list-sale .pre-sale{
    border: 1rpx solid #fea54c;
    color: #fea54c;
}

3、页面逻辑处理

//index.js
Page({
  data: {
    films: [],
    limit: 6,
    loading: false,
    windowHeight: 0,
    windowWidth: 0
  },
  onLoad: function () {
    this.setData({
      loading: false
    })
  },
  onShow: function(){
    var that = this
    wx.request({
      url: 'http://m.maoyan.com/movie/list.json', //仅为示例，并非真实的接口地址
      data: {
        offset: 0,
        type: 'hot',
        limit: that.data.limit
      },
      header: {
          'Content-Type': 'application/json'
      },
      success: function(res) {
        console.log(res.data)
        that.setData({
          films: res.data.data.movies,
          loading: true
        })
      }
    })
    wx.getSystemInfo({
      success: (res) => {
        that.setData({
          windowHeight: res.windowHeight,
          windowWidth: res.windowWidth
        })
      }
    })
  },
  pullDownRefresh: function(e) {
    this.onLoad()
  },
  pullUpLoad: function(e) {
    var limit = this.data.limit + 6
    console.log(limit)
    this.setData({
      limit: limit
    })
    this.onShow()
  }
})

这里使用是的猫眼电影的api

其接口为

http://m.maoyan.com/movie/list.json

返回数据如下所示：

{
    "control":{
        "expires":1800
    },
    "status":0,
    "data":{
        "hasNext":true,
        "movies":[
            {
                "showInfo":"今天64家影院放映1083场",
                "cnms":0,
                "sn":0,
                "late":false,
                "img":"http://p0.meituan.net/165.220/movie/fbe5f97c016c9f4520109dc70f458d4d83363.jpg",
                "sc":9.1,
                "ver":"2D/3D/IMAX 3D/中国巨幕",
                "rt":"本周五上映",
                "dur":136,
                "nm":"银河护卫队2",
                "showDate":"",
                "src":"",
                "vd":"",
                "dir":"詹姆斯·古恩",
                "star":"克里斯·帕拉特,佐伊·索尔达娜,戴夫·巴蒂斯塔",
                "cat":"动作,冒险,科幻",
                "wish":154543,
                "3d":true,
                "pn":188,
                "scm":"星爵身世迷，终于见爹地",
                "preSale":0,
                "imax":true,
                "snum":41866,
                "time":"",
                "id":248683
            },
            {
                "showInfo":"今天62家影院放映335场",
                "cnms":0,
                "sn":0,
                "late":false,
                "img":"http://p0.meituan.net/165.220/movie/aeb864fa21d578d845b9cefc056e40cb2874891.jpg",
                "sc":9.8,
                "ver":"2D",
                "rt":"本周五上映",
                "dur":140,
                "nm":"摔跤吧！爸爸",
                "showDate":"",
                "src":"",
                "vd":"",
                "dir":"尼特什·提瓦瑞",
                "star":"阿米尔·汗,萨卡诗·泰瓦,法缇玛·萨那·纱卡",
                "cat":"喜剧,动作,家庭",
                "wish":27412,
                "3d":false,
                "pn":54,
                "scm":"为圆摔跤梦，女儿不心疼",
                "preSale":0,
                "imax":false,
                "snum":19166,
                "time":"",
                "id":588362
            },
            {
                "showInfo":"今天63家影院放映256场",
                "cnms":0,
                "sn":0,
                "late":false,
                "img":"http://p1.meituan.net/165.220/movie/cc50791238502ae1fa08df764c5f5c97223987.jpg",
                "sc":9.1,
                "ver":"2D/中国巨幕",
                "rt":"2017-04-28上映",
                "dur":120,
                "nm":"拆弹·专家",
                "showDate":"",
                "src":"",
                "vd":"",
                "dir":"邱礼涛",
                "star":"刘德华,姜武,宋佳",
                "cat":"动作,悬疑,犯罪",
                "wish":49007,
                "3d":false,
                "pn":167,
                "scm":"爆炸袭击案，拆弹反恐难",
                "preSale":0,
                "imax":false,
                "snum":95491,
                "time":"",
                "id":346103
            },
            {
                "showInfo":"今天48家影院放映156场",
                "cnms":0,
                "sn":0,
                "late":false,
                "img":"http://p1.meituan.net/165.220/movie/af297f59e363ce96290dfea22f6fea0c153020.jpg",
                "sc":9.4,
                "ver":"2D/3D/IMAX 3D/中国巨幕/全景声",
                "rt":"2017-04-14上映",
                "dur":136,
                "nm":"速度与激情8",
                "showDate":"",
                "src":"",
                "vd":"",
                "dir":"F·加里·格雷",
                "star":"范·迪塞尔,杰森·斯坦森,道恩·强森",
                "cat":"动作,惊悚,犯罪",
                "wish":320713,
                "3d":true,
                "pn":226,
                "scm":"车王要黑化，家族被击垮",
                "preSale":0,
                "imax":true,
                "snum":899592,
                "time":"",
                "id":248700
            },
            {
                "showInfo":"今天46家影院放映133场",
                "cnms":0,
                "sn":0,
                "late":false,
                "img":"http://p1.meituan.net/165.220/movie/ea0131b3e9e40f226c7c2664f6185a3792752.jpg",
                "sc":8.9,
                "ver":"2D",
                "rt":"2017-04-27上映",
                "dur":107,
                "nm":"喜欢·你",
                "showDate":"",
                "src":"",
                "vd":"",
                "dir":"许宏宇",
                "star":"金城武,周冬雨,孙艺洲",
                "cat":"喜剧,爱情",
                "wish":30224,
                "3d":false,
                "pn":216,
                "scm":"美食嘉年华，爱情甜掉牙",
                "preSale":0,
                "imax":false,
                "snum":68306,
                "time":"",
                "id":672175
            }
        ]
    }
}

详情页部分