一、前言
二、主要内容
1、功能描述：通过选择类型和时间对请求到的活动进行帅选
2、具体实现
2.1根据城市请求活动
/*获取活动 :根据城市，日期，活动类型获取*/
getActicityByLocationId: function (locId, dayType, eventType ){ var that = this;
console.log("locId: "+ locId + ",dayType: " +dayType+ ", type: " + eventType)
wx.showToast({
title: '加载中',
icon:'loading',
duration: 10000
}); var parameter ="?"
locId && (parameter +="loc=" + locId)
dayType && (parameter += "day_Type=" + dayType)
eventType && (parameter += "type="+ eventType) //请求活动列表
var eventListURL = app.globalData.doubanBase + app.globalData.event_list_url + parameter + "&&start=0&&count=50"
wx.request({
url: eventListURL,
data:{},
method:'GET',
header:{'content-type': 'json'},
success:function(res){
console.log(res)
that.handleEventListData(res.data.events)
},
fail:function(){
},
complete:function(){
wx.hideToast()
}
})
}
请求到的活动信息如下图所示，下面是没有分类的所有活动：
2.2、对上面请求到的活动分类
//处理活动信息
handleEventListData:function(data){ var events = {} for(let idx in data){ var event = data[idx] var category = event.category
console.log(category) //将所有的活动筛选出来
if(!events[category]){
events[category]=[]
}
console.log(events)//将上面的活动组装成以category为属性，ommonweal：[{ … }, { … }]
//格式化时间
var time_str = event.time_str//"2019.04.23 周二 起"
var time = ""
if(typeof time_str == 'string'){ var time_arr = time_str.split(" ")
time = time_arr[0]
} var temp = {
id: event.id,
image:event.image,
loc_name:event.loc_name,
owner:event.owner,
category:event.category,
category_name:event.category_name,
title:event.title,
wisher_count:event.wisher_count,
has_ticket:event.has_ticket,
content:event.content,
can_invite:event.can_invite,
time_str: time,
album: event.album,
participant_count: event.participant_count,
tags: event.tags,
image_hlarge: event.image_hlarge,
begin_time: event.begin_time,
price_range: event.price_range,
geo: event.geo,
image_lmobile: event.image_lmobile,
loc_id: event.loc_id,
end_time: event.end_time,
address: event.address,
}
events[category].push(temp)//event里面根据category来分
} var keys = Object.keys(events); //方法会返回一个由一个给定对象的自身可枚举属性组成的数组，数组中属性名的排列序和使用 for...in 循环遍历该对象时返回的顺序一致 keys.sort();
console.log(events) var eventsKey = [] for(let i in keys){ var key = keys[i] var arr = events[key] if(arr.length>=4){
eventsKey.push(key) //显示活动类型大于4的 }
}
console.log(events,eventsKey) this.setData({ "events":events, "eventsKey":eventsKey
})
},
处理之后活动为：
| 按照 event.category对活动进行分类 | 
|
| eventsKey筛选出活动类型中数量大于4的显示 |
3、点击选择类型时间，跳转到筛选页面
3.1在筛选页面生命周期onload中
onLoad: function (options) {
console.log(options) var windowWidth = app.globalData.windowWidth var windowHeight = app.globalData.windowHeight
console.log(windowHeight)//获取到当前窗口的宽和高
var locId = options.locId; //得到当前的城市id
var eventType = options.type;
//自定义一个对象，活动种类
var typeCategory = { "all": { "id": "all", "name": "all", "title": "全部" }, "music": { "id": "music", "name": "music", "title": "音乐" }, "film": { "id": "film", "name": "film", "title": "电影" }, "drama": { "id": "drama", "name": "drama", "title": "戏剧 " }, "commonweal": { "id": "commonweal", "name": "commonweal", "title": "公益" }, "salon": { "id": "salon", "name": "salon", "title": "讲座 " }, "exhibition": { "id": "exhibition", "name": "exhibition", "title": "展览" }, "party": { "id": "party", "name": "party", "title": "聚会" }, "sports": { "id": "sports", "name": "sports", "title": "运动" }, "travel": { "id": "travel", "name": "travel", "title": "旅行" }, "course": { "id": "course", "name": "course", "title": "课程" }
}; //自定义时间对象
var dateCategory = { "future": { "id": "future", "name": "future", "title": "全部" }, "today": { "id": "today", "name": "today", "title": "今天" }, "tomorrow": { "id": "tomorrow", "name": "tomorrow", "title": "明天" }, "weekend": { "id": "weekend", "name": "weekend", "title": "周末" }, "week": { "id": "week", "name": "week", "title": "近期" },
}; // 全局保存的活动类型信息，travel:{id: "16", name: "travel", title: "旅行", color: "#cccc99"}
var g_eventCategory = app.globalData.eventCategory;
console.log(g_eventCategory) this.setData({ "locId":locId, //当前的城市id
"typeCategory": typeCategory, //上面自定义的活动类型对象
"dateCategory": dateCategory, //上面自定义的时间类型对象
"g_eventCategory": g_eventCategory, // "windowWidth": windowWidth, "windowHeight": windowHeight
}) // 请求活动列表,
this.getEventListData();
}
3.2：根据当前的城市ID, type, data请求数据
getEventListData:function(){ var that = this; var offset = that.data.eventsData["offset"]||0;
console.log(offset) //当前的活动条数
var total = that.data.eventsData['total']||999;//总共的活动数目
if(offset>=total){ return;
}
wx.showToast({
title: '加载中',
icon: 'loading',
duration:10000
}); var params = "?"
this.data.locId && (params += "loc=" +this.data.locId) this.data.type && (params +="&&type=" + this.data.type) this.data.date && (params +="&&day_type=" +this.data.date)
var url = app.globalData.doubanBase + app.globalData.event_list_url + params + "&&start=" + offset + "&&count=5";
console.log(url)
wx.request({
url: url,
method:'GET',
header:{'content-type':'json'},
success:function(res){ var data = res.data //得到城市的所有活动 console.log(data)
that.processEventListData(data)
}
})
}
3.3对请求到的活动进行处理
processEventListData:function(data){ var list = this.data.eventsData["event"]||[]; var offset = this.data.eventsData["offset"]||0; var total = data.total;//总条数 console.log(data.events.length)
offset += data.events.length; //console.log(offset)
for(let idx in data.events){ var event = data.events[idx] var time_str = event.time_str var time =""
//取出时间里面的日期
if(typeof time_str =="string"){ var time_arr = time_str.split(" ");
time = time_arr[0]
} var temp = {
id: event.id,
image: event.image,
loc_name: event.loc_name,
owner: event.owner,
category: event.category,
title: event.title,
wisher_count: event.wisher_count,
has_ticket: event.has_ticket,
content: event.content,
can_invite: event.can_invite,
time_str: time,
album: event.album,
participant_count: event.participant_count,
tags: event.tags,
image_hlarge: event.image_hlarge,
begin_time: event.begin_time,
price_range: event.price_range,
geo: event.geo,
image_lmobile: event.image_lmobile,
loc_id: event.loc_id,
end_time: event.end_time,
address: event.address,
};
list.push(temp)
} var readyData = {}
readyData["eventsData"]={ "events":list, "offset":offset, "total":total
}
this.setData(readyData)
console.log(this.data)
},
3.4、类型和事件切换：
（1）html代码：
如果当前的type==all就显示类型，并且让当前字体不高亮
如果当前日期为future显示时间，并且让当前时间不高亮
<view class='session-header'>
<text class='type-tab {{type == "all" ?"tab-normal":"tab-HL"}}' bindtap='handleType'>{{type=='all'?'类型':g_eventCategory[type].title}}</text>
<text class='time-tab {{date =="future"? "tab-normal" : "tab-HL"}}' bindtap='handleTime' >{{date == 'future' ? '时间':dateCategory[date].title}}</text>
<text class='loc-tab' bindtap='handleLocation'>地点</text>
</view>
<view class='category-session' wx:if="{{showCategory}}">
<view class='type-category-session'>
<block wx:for="{{eventCategory}}" wx:for-item="eventType">
<text class='category' catchtap='handleCategory' data-id="{{eventType.id}}" data-name="{{eventType.name}}" data-title="{{eventType.title}}">{{eventType.title}}</text>
</block>
</view>
<view class='category-cover' bindtap='handleCoverTap'></view>
</view>
（2）为类型和时间分别注册点击事件：
resetMenuTap: function () {
var readyData = { "isTypeTap": false, "isDateTap": false }
this.setData(readyData)
},
:, : .data.typeCategory, :.data.type :
为时间注册点击事件：
resetMenuTap: function () {
var readyData = { "isTypeTap": false, "isDateTap": false }
this.setData(readyData)
},
: , :.data.dateCategory, :.data.date .resetMenuTap(); :
切换的时候子标签也不一样是因为，点击日期的时候eventCategory和current里面存放的是日期对象， 点击时间的时候eventCategory里面存放的是时间对象。
3.5、对子标签进行处理：
下面显示的内容最开始是显示的所有的类型，选择不同的子标签就会筛选出不同的类型，点击某个子标签的时候将当前对应的, 类型的id,name和title传过去。
选择类型时：
eventCategory:
选择时间时：
<view class='category-session' wx:if="{{showCategory}}">
<view class='type-category-session'>
<block wx:for="{{eventCategory}}" wx:for-item="eventType">
<text class='category' catchtap='handleCategory' data-id="{{eventType.id}}" data-name="{{eventType.name}}" data-title="{{eventType.title}}">{{eventType.title}}</text>
</block>
</view>
<view class='category-cover' bindtap='handleCoverTap'></view>
</view>
/*点击某个子类 */
handleCategory:function(event){ var id = event.currentTarget.dataset.id;
console.log(id)
console.log(this.data.isTypeTap)
console.log(this.data.isDateTap) var readyData = {"showCategory":false} //点击子标签的时候，将当前的种类选择隐藏
this.data.isTypeTap && (readyData["type"]= id) //设置type this.data.isDateTap && (readyData["date"]=id)//设置date
readyData["eventsData"]={} this.setData(readyData)
console.log(this.data.date) this.getEventListData(); //根据对应的id type date请求活动信息 this.resetMenuTap(); //每次点击之后重置当前状态
},
来源：https://www.cnblogs.com/xxm980617/p/10959870.html