微信小程序框架分析小练手(三)——仿香哈菜谱小程序制作

2020/01/29 22:36
阅读数 45

香哈菜谱是一款围绕美食而成的小程序,在这里可以查看各式各样的菜谱。

 

一、打开微信开发者工具,新建一个项目:xhcp。如下图:

 

 

 二、建立如下的一些目录:

 

 

 

 

 三、将底部标签导航图标、美食轮播图片、宫格导航图标、香哈头条美食图片的素材放置于pages文件夹下的images中:

 

 

 

Ⅰ、底部标签栏设计

 

 

 四、打开app.json配置文件,在pages数组中添加5个页面路径"pages/cook/cook","pages/food/food","pages/headline/headline","pages/message/message","pages/me/me"。

   在windows数组里配置窗口导航背景颜色为灰色(#494949),导航栏文字为“学做菜”,字体颜色为白色(#ffffff):

 

 

 五、在tabBar对象中配置底部标签栏导航背景色为白色(#ffffff),文字默认颜色为灰色(#999999),选中时颜色为红色(#CC1004),在list数组中配置底部标签栏导航对应的页面、导航名称、默认时图标及选中时图标。

app.json的完整代码如下:

 1 {
 2   "pages": [
 3     "pages/cook/cook",
 4     "pages/food/food",
 5     "pages/headline/headline",
 6     "pages/message/message",
 7     "pages/me/me"
 8   ],
 9   "window": {
10     "backgroundTextStyle": "light",
11     "navigationBarBackgroundColor": "#494949",
12     "navigationBarTitleText": "学做菜",
13     "navigationBarTextStyle": "white"
14   },
15   "tabBar": {
16     "selectedColor": "#CC1004",
17     "color": "#999999",
18     "backgroundColor": "#ffffff",
19     "borderStyle": "black",
20     "list": [
21       {
22         "pagePath": "pages/cook/cook",
23         "text": "学做菜",
24         "iconPath": "pages/images/tab/cook-0.jpg",
25         "selectedIconPath": "pages/images/tab/cook-1.jpg"
26       },
27       {
28         "pagePath": "pages/headline/headline",
29         "text": "头条",
30         "iconPath": "pages/images/tab/headline-0.jpg",
31         "selectedIconPath": "pages/images/tab/headline-1.jpg"
32       },
33       {
34         "pagePath": "pages/food/food",
35         "text": "美食圈",
36         "iconPath": "pages/images/tab/food-0.jpg",
37         "selectedIconPath": "pages/images/tab/food-0.jpg"
38       },
39       {
40         "pagePath": "pages/message/message",
41         "text": "消息",
42         "iconPath": "pages/images/tab/message-0.jpg",
43         "selectedIconPath": "pages/images/tab/message-1.jpg"
44       },
45       {
46         "pagePath": "pages/me/me",
47         "text": "我的",
48         "iconPath": "pages/images/tab/me-0.jpg",
49         "selectedIconPath": "pages/images/tab/me-1.jpg"
50       }
51     ]
52   }
53 }

 

至此,底部标签导航就设计完成了:

 

 

 

 Ⅱ、宫格导航设计

在学做菜的页面中,有海报轮播的图片(微信小程序中有专门的swiper滑块视图组件实现这个效果),还要4跟宫格导航:菜谱分类、视频、美食养生和闪购。

六、在pages/cook/cook.wxml文件中,首先设计海报轮播区域,使用一张图片进行布局,图片的宽度设置为100%,高度设置为230px:

 

 

 界面效果如下:

 

 

 七、设计宫格导航,分为4个导航:菜谱分类、视频、美食养生、闪购。每个导航对应一个图标,在导航的下面是灰色的间隔线:

 1 <!--pages/cook/cook.wxml-->
 2 <view class="content">
 3   <view class="img">
 4     <image src="../images/haibao/haibao-1.jpg" style="width:100%;height:230px;"></image>
 5   </view>
 6 
 7   <view class="nav">
 8     <view class="nav-item">
 9     <view><image src="../images/icon/fenlei.jpg" style="width:25px;height:23px;"></image></view>
10     <view>菜谱分类</view>
11     </view>
12     <view class="nav-item">
13     <view><image src="../images/icon/shipin.jpg" style="width:25px;height:23px;"></image></view>
14     <view>视频</view>
15     </view>
16     <view class="nav-item">
17     <view><image src="../images/icon/meishi.jpg" style="width:25px;height:23px;"></image></view>
18     <view>美食养生</view>
19     </view>
20     <view class="nav-item">
21     <view><image src="../images/icon/shangou.jpg" style="width:25px;height:23px;"></image></view>
22     <view>闪购</view>
23     </view>
24   </view>
25   <view class="hr"></view>
26 </view>

八、在pages/cook/cook.wxss中针对宫格导航添加样式:

 1 /* pages/cook/cook.wxss */
 2 .nav{
 3   display: flex;
 4   flex-direction: row;
 5   text-align: center;
 6 }
 7 .nav-item{
 8   width: 25%;
 9   margin-top: 20px;
10   font-size: 12px;
11 }
12 .hr{
13   height: 15px;
14   background-color: #cccccc;
15   margin-top: 15px;
16   opacity: 0.2;
17 }
18 .head{
19   display: flex;
20   flex-direction: row;
21   margin: 10px;
22   font-size: 13px;
23   color: #999999;
24 }
25 .right{
26   position: absolute;
27   right: 10px;
28   color: #999999;
29 }
30 .hr2{
31   height: 2px;
32   background-color: #cccccc;
33   opacity: 0.2;
34 }

至此,就完成了海报轮播区域和宫格导航区域的界面布局,界面效果如下:

 

 

 

 Ⅲ、头条初始化数据

微信小程序作为客户端,它的数据来源自服务端。接下来模拟服务端提供香哈头条列表的数据,有了数据,页面才能动态地渲染。

九、在pages/cook/cook.js中,添加initData数据,在data页面初始化数据里添加array数组,然后将initData定义的数据通过setData设值函数赋值给array数组:

  1 // pages/cook/cook.js
  2 Page({
  3 
  4   /**
  5    * 页面的初始数据
  6    */
  7   data: {
  8     array: []
  9   },
 10 
 11   /**
 12    * 生命周期函数--监听页面加载
 13    */
 14   onLoad: function (options) {
 15     var array = this.initData();
 16     this.setData({array:array});
 17   },
 18   initData:function(){
 19     var array = [];
 20     var object1 = new Object();
 21     object1.img = '../images/list/food-1.jpg';
 22     object1.title = '爱心早餐';
 23     object1.type = '健康养生';
 24     object1.liulan = '30988浏览';
 25     object1.pinglun = '7评论';
 26     array[0] = object1;
 27 
 28     var object2 = new Object();
 29     object2.img = '../images/list/food-2.jpg';
 30     object2.title = '困了只想喝咖啡';
 31     object2.type = '家庭医生在线';
 32     object2.liulan = '29999浏览';
 33     object2.pinglun = '14评论';
 34     array[1] = object2;
 35 
 36     var object3 = new Object();
 37     object3.img = '../images/list/food-3.jpg';
 38     object3.title = '橘子多吃变小黄人';
 39     object3.type = '家庭医生在线';
 40     object3.liulan = '19356浏览';
 41     object3.pinglun = '5评论';
 42     array[2] = object3;
 43     
 44     var object4 = new Object();
 45     object4.img = '../images/list/food-4.jpg';
 46     object4.title = '搜狐新闻,手机用久了';
 47     object4.type = '广告';
 48     object4.liulan = '5046浏览';
 49     object4.pinglun = '3评论';
 50     array[3] = object4;
 51 
 52     var object5 = new Object();
 53     object5.img = '../images/list/food-5.jpg';
 54     object5.title = '困了只想喝咖啡';
 55     object5.type = '家庭医生在线';
 56     object5.liulan = '29999浏览';
 57     object5.pinglun = '13评论';
 58     array[4] = object5;
 59 
 60     return array;
 61   },
 62   /**
 63    * 生命周期函数--监听页面初次渲染完成
 64    */
 65   onReady: function () {
 66 
 67   },
 68 
 69   /**
 70    * 生命周期函数--监听页面显示
 71    */
 72   onShow: function () {
 73 
 74   },
 75 
 76   /**
 77    * 生命周期函数--监听页面隐藏
 78    */
 79   onHide: function () {
 80 
 81   },
 82 
 83   /**
 84    * 生命周期函数--监听页面卸载
 85    */
 86   onUnload: function () {
 87 
 88   },
 89 
 90   /**
 91    * 页面相关事件处理函数--监听用户下拉动作
 92    */
 93   onPullDownRefresh: function () {
 94 
 95   },
 96 
 97   /**
 98    * 页面上拉触底事件的处理函数
 99    */
100   onReachBottom: function () {
101 
102   },
103 
104   /**
105    * 用户点击右上角分享
106    */
107   onShareAppMessage: function () {
108 
109   }
110 })

 

Ⅳ、头条列表渲染及绑定数据

 香哈头条里有菜谱的图片、美食名称、分类、浏览数量以及评论数量。

十、在pages/cook/cook.wxml中,进行香哈头条列表信息界面布局:

 1 <!--pages/cook/cook.wxml-->
 2 <view class="content">
 3   <view class="img">
 4     <image src="../images/haibao/haibao-1.jpg" style="width:100%;height:230px;"></image>
 5   </view>
 6 
 7   <view class="nav">
 8     <view class="nav-item">
 9     <view><image src="../images/icon/fenlei.jpg" style="width:25px;height:23px;"></image></view>
10     <view>菜谱分类</view>
11     </view>
12     <view class="nav-item">
13     <view><image src="../images/icon/shipin.jpg" style="width:25px;height:23px;"></image></view>
14     <view>视频</view>
15     </view>
16     <view class="nav-item">
17     <view><image src="../images/icon/meishi.jpg" style="width:25px;height:23px;"></image></view>
18     <view>美食养生</view>
19     </view>
20     <view class="nav-item">
21     <view><image src="../images/icon/shangou.jpg" style="width:25px;height:23px;"></image></view>
22     <view>闪购</view>
23     </view>
24   </view>
25   <view class="hr"></view>
26   <view class="head">
27   <view>香哈头条</view>
28   <view class="right"></view>
29   </view>
30   <view class="list">
31     <view class="item" bindtap="seeDetail" id="0">
32       <view>
33       <image src="../images/list/food-1.jpg" style="width:75px;height:58px;"></image>
34       </view>
35       <view class="desc">
36         <view class="title">爱心早餐</view>
37         <view class="count">
38           <view>健康养生</view>
39           <view class="liulan">30988浏览</view>
40           <view class="pinglun">7评论</view>
41         </view>
42       </view>
43     </view>
44     <view class="hr2"></view>
45   </view>
46 </view>

十一、在pages/cook/cook.wxss中,针对香哈头条列表信息添加样式:

 1 .item{
 2   display: flex;
 3   flex-direction: row;
 4   margin-left: 10px;
 5   margin-bottom: 5px;
 6 }
 7 .desc{
 8   margin-left: 20px;
 9   line-height: 30px;
10 }
11 .title{
12   font-weight: bold;
13 }
14 .count{
15   display: flex;
16   flex-direction: row;
17   font-size: 12px;
18   color: #999999;
19 }
20 .liulan{
21   position: absolute;
22   right: 70px;
23 }
24 .pinglun{
25   position: absolute;
26   right: 10px;
27 }

界面效果如下:

 

 

 

 

 

 

 十二、接下来通过数据绑定和wx:for循环的方式动态加载数据:

 1 <!--pages/cook/cook.wxml-->
 2 <view class="content">
 3   <view class="img">
 4     <image src="../images/haibao/haibao-1.jpg" style="width:100%;height:230px;"></image>
 5   </view>
 6 
 7   <view class="nav">
 8     <view class="nav-item">
 9     <view><image src="../images/icon/fenlei.jpg" style="width:25px;height:23px;"></image></view>
10     <view>菜谱分类</view>
11     </view>
12     <view class="nav-item">
13     <view><image src="../images/icon/shipin.jpg" style="width:25px;height:23px;"></image></view>
14     <view>视频</view>
15     </view>
16     <view class="nav-item">
17     <view><image src="../images/icon/meishi.jpg" style="width:25px;height:23px;"></image></view>
18     <view>美食养生</view>
19     </view>
20     <view class="nav-item">
21     <view><image src="../images/icon/shangou.jpg" style="width:25px;height:23px;"></image></view>
22     <view>闪购</view>
23     </view>
24   </view>
25   <view class="hr"></view>
26   <view class="head">
27   <view>香哈头条</view>
28   <view class="right"></view>
29   </view>
30   <view class="list">
31   <block wx:for="{{array}}">
32   <view class="item" bindtap="seeDetail" id="0">
33       <view>
34       <image src="{{item.img}}" style="width:75px;height:58px;"></image>
35       </view>
36       <view class="desc">
37         <view class="title">{{item.title}}</view>
38         <view class="count">
39           <view>{{item.type}}</view>
40           <view class="liulan">{{item.liulan}}</view>
41           <view class="pinglun">{{item.pinglun}}</view>
42         </view>
43       </view>
44     </view>
45     <view class="hr2"></view>
46   </block>
47   </view>
48 </view>

界面效果如下:

 

 

Ⅴ.头条模板引用

十三、在template目录下添加一个template.wxml文件,在该文件中制作一个香哈头条列表的模板,模板名称为cooks,将列表循环的内容放置在该文件中:

 

 十四、将cooks模板引用到cook.wxml中,能达到与刚才同样的效果:

 

 模板可以被不同的地方使用,以达到一次编写,多次引用的效果。

 

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