一、准备工作
首先需要下载小程序开发工具
官方下载地址:
https://mp.weixin.qq.com/debug/wxadoc/dev/devtools/download.html
目录结构说明
二、程序实现
1.运行开发工具
选择「本地小程序项目」
2.新建项目
3.开启接口域名免校验
4.运行效果
三、功能说明
1.通过page方式实现下拉刷新,上拉更多列表
onPullDownRefresh 下拉刷新API
// 下拉 刷新列表(滚到顶部)
onPullDownRefresh: function (e) {
if (!refresh) {
var that = this;
refresh = true;
// 显示刷新动画
that.setData({
refreshhidden: false
})
wx.request({
url: 'https://news-at.zhihu.com/api/4/news/latest',
method: 'get',
data: {},
header: { "Content-Type": "application/json" },
success: function (res) {
// 数据加载完成后 延迟隐藏loading
setTimeout(function () {
wx.clearStorageSync(); // 清空数据
// 重置列表为空
that.setData({
datalist: []
})
refresh = false;
var arr = res.data;
var format = util.getFormatDate(arr.date);
arr["dateDay"] = format.dateDay;
var list = that.data.datalist;
that.setData({
datalist: list.concat(arr),
dataListDateCurrent: arr.date,
dataListDateCount: 1,
refreshhidden: false
});
}, 2000);
}
});
} else {
console.log("正在刷新...");
}
},
onReachBottom 滑动到底部API(上拉更多)
// 上拉 加载更多(滚到底部)
onReachBottom: function (e) {
var that = this;
// 加载更多 loading
that.setData({
loadmorehidden: false
})
var currentDate = this.data.dataListDateCurrent; // 请求参数:日期
// 限制加载次数
if (this.data.dataListDateCount >= 3) {
that.setData({ // 加载更多 loading
loadmorehidden: true
});
} else {
// 记录请求日期参数,避免滚动到底部事件,多次触发相同请求
if (currentDate == wx.getStorageSync("currentDate")) {
console.log(currentDate + "已发起请求!");
} else {
wx.request({
url: 'https://news-at.zhihu.com/api/4/news/before/' + currentDate,
method: 'get',
data: {},
header: { "Content-Type": "application/json" },
success: function (res) {
var arr = res.data;
var format = util.getFormatDate(arr.date);
arr["dateDay"] = format.dateDay;
var list = that.data.datalist;
that.setData({
datalist: list.concat(arr),
dataListDateCurrent: arr.date,
dataListDateCount: that.data.dataListDateCount + 1
});
}
});
}
}
},
2.结合weui实现加载动画效果
在wxml界面,结合weui加载更多组件,实现加载动画效果
<!-- 列表 下拉刷新 动画 -->
<view class="hot-box-top" hidden="{{!refreshhidden}}">
<view class="weui-loadmore">
<view class="weui-loading"></view>
<view class="weui-loadmore__tips">正在刷新...</view>
</view>
</view>
<!-- 列表 上拉加载更多 动画 -->
<view class="hot-box-more">
<view wx:if="{{!loadmorehidden}}">
<view class="weui-loadmore">
<view class="weui-loading"></view>
<view class="weui-loadmore__tips">加载更多...</view>
</view>
</view>
<view wx:else>
<text> 没有更多了 </text>
</view>
</view>
3.结合知乎app接口实现数据的动态加载
通过使用知乎API实现动态数据的加载
API1:获取最新 精选 信息列表
1.接口地址
https://news-at.zhihu.com/api/4/news/latest
2.输入参数(无)
3.返回参数
{
"dateDay" : "08月07日 星期一",
"top_stories" : [
{
"id" : 9560543,
"title" : "对于嘲讽对手的行为,只能说「电子竞技不相信眼泪」",
"image" : "https://pic1.zhimg.com/v2-c7a203de0c6a6d451d44ad1a415cc6b0.jpg",
"type" : 0,
"ga_prefix" : "080717"
},
{
"id" : 9560143,
"title" : "知道苹果公司有钱,但没想到美国*还欠它 526 亿美元",
"image" : "https://pic2.zhimg.com/v2-0d313023bc8c4b3f2e68ea65aeeebc35.jpg",
"type" : 0,
"ga_prefix" : "080713"
},
{
"id" : 9556786,
"title" : "想要做好尽职调查,必须细致到连企业的厕所也不能放过",
"image" : "https://pic4.zhimg.com/v2-8efe699a0ad605d935fe53a5d2d3d147.jpg",
"type" : 0,
"ga_prefix" : "080711"
},
{
"id" : 9559601,
"title" : "博尔特在北京奥运的表演仿佛就在昨天,现在已是传奇谢幕",
"image" : "https://pic2.zhimg.com/v2-49c4ccda5bc1fb4fc10b2529a563e3dd.jpg",
"type" : 0,
"ga_prefix" : "080707"
},
{
"id" : 9552053,
"title" : "满眼二维码,在移动支付上银行已经输了?其实混战才开始",
"image" : "https://pic1.zhimg.com/v2-04123bb20c6637a15dcd1eac71c4f6e8.jpg",
"type" : 0,
"ga_prefix" : "080709"
}
],
"stories" : [
{
"id" : 9560228,
"title" : "被吓得头皮发麻、脊背发凉……但真的太「爽」了",
"type" : 0,
"images" : [
"https://pic1.zhimg.com/v2-31792fa6be283373ce3b8574940342d8.jpg"
],
"ga_prefix" : "080721"
},
{
"id" : 9559747,
"title" : "「孩子哭别管他,哭累了就睡了」,这种方法真的不行",
"type" : 0,
"images" : [
"https://pic2.zhimg.com/v2-b1f5f7c5384a682fe07dd2a573541bb9.jpg"
],
"ga_prefix" : "080710"
},
{
"id" : 9552053,
"title" : "满眼二维码,在移动支付上银行已经输了?其实混战才开始",
"type" : 0,
"images" : [
"https://pic3.zhimg.com/v2-c191427cc66d14db722d2875484b362a.jpg"
],
"ga_prefix" : "080709"
},
{
"id" : 9559040,
"title" : "好好的一个年轻人,怎么就……中了回锅肉的毒",
"type" : 0,
"images" : [
"https://pic2.zhimg.com/v2-67ec769321d8c64e05c9adde287ed711.jpg"
],
"ga_prefix" : "080708"
},
{
"multipic" : true,
"id" : 9559601,
"title" : "博尔特在北京奥运的表演仿佛就在昨天,现在已是传奇谢幕",
"type" : 0,
"ga_prefix" : "080707",
"images" : [
"https://pic4.zhimg.com/v2-676d2821c51bd66f05a1ffcea167fe1b.jpg"
]
},
{
"id" : 9558150,
"title" : "这里是广告 · 蜀道有栈桥何惧上青天",
"type" : 0,
"images" : [
"https://pic1.zhimg.com/v2-4fd0510d4ef0766c07605e1bd3c6bfc4.jpg"
],
"ga_prefix" : "080706"
}
],
"date" : "20170807"
}
API2:获取历史记录
1.接口地址
https://news-at.zhihu.com/api/4/news/before/20170807
https://news-at.zhihu.com/api/4/news/before/日期
2.输入参数:日期
3.返回参数
{
"date" : "20170806",
"stories" : [
{
"id" : 9548310,
"title" : "小事 · 呃……我赢了?",
"type" : 0,
"images" : [
"https://pic4.zhimg.com/v2-ee8be37e57714d08dfb497e72f0288db.jpg"
],
"ga_prefix" : "080622"
},
{
"id" : 9551898,
"title" : "他的音乐可令时光倒流,五座小金人不足以说明他的成就",
"type" : 0,
"images" : [
"https://pic1.zhimg.com/v2-cdaabf222267bb7162abd089fc45bc24.jpg"
],
"ga_prefix" : "080621"
},
{
"id" : 9549918,
"title" : "玩了这么多年魔兽,我就是对这个设计有意见",
"type" : 0,
"images" : [
"https://pic4.zhimg.com/v2-02d7621c85df476d6c9e99b07c186883.jpg"
],
"ga_prefix" : "080620"
}
]
}
微信小程序之下拉刷新,上拉更多列表实现
注:本文著作权归作者,由demo大师代发,拒绝转载,转载需要作者授权