ylbtech-小程序-demo：妹纸图

1.返回顶部
0、
   
1、app.js
//app.js

App({

  onLaunch: function () {

    //调用API从本地缓存中获取数据

    var logs = wx.getStorageSync('logs') || []

    logs.unshift(Date.now())

    wx.setStorageSync('logs', logs)

  },

  getUserInfo:function(cb){

    var that = this

    if(this.globalData.userInfo){

      typeof cb == "function" && cb(this.globalData.userInfo)

    }else{

      //调用登录接口

      wx.login({

        success: function () {

          wx.getUserInfo({

            success: function (res) {

              that.globalData.userInfo = res.userInfo

              typeof cb == "function" && cb(that.globalData.userInfo)

            }

          })

        }

      })

    }

  },

  globalData:{

    userInfo:null

  }

})
2、app.json
{

  "pages":[

    "pages/index/index",

    "pages/image/image"

  ],

  "window":{

    "backgroundTextStyle":"dark",

    "navigationBarBackgroundColor": "#fff",

    "navigationBarTitleText": "妹纸图",

    "navigationBarTextStyle":"black"

  }

}
3、app.wxss
/**app.wxss**/
4、project.config.json
{

    "description": "项目配置文件。",

    "packOptions": {

        "ignore": []

    },

    "setting": {

        "urlCheck": false,

        "es6": true,

        "postcss": true,

        "minified": true,

        "newFeature": true

    },

    "compileType": "miniprogram",

    "libVersion": "2.2.3",

    "appid": "wx7d22ab7088f2db6a",

    "projectname": "meiziApp",

    "isGameTourist": false,

    "condition": {

        "search": {

            "current": -1,

            "list": []

        },

        "conversation": {

            "current": -1,

            "list": []

        },

        "game": {

            "currentL": -1,

            "list": []

        },

        "miniprogram": {

            "current": -1,

            "list": []

        }

    }

}
5、pages
-image
-index
6、utils
-constant.js
//url相关

var BASE_URL = "http://gank.io/api";

var GET_MEIZHI_URL = BASE_URL.concat("/data/%E7%A6%8F%E5%88%A9/10/");

// 将方法、变量暴露出去

module.exports = {

    BASE_URL: BASE_URL,

    GET_MEIZHI_URL: GET_MEIZHI_URL

}
-util.js
// 工具类

function formatTime(date) {

  var year = date.getFullYear()

  var month = date.getMonth() + 1

  var day = date.getDate()

  var hour = date.getHours()

  var minute = date.getMinutes()

  var second = date.getSeconds()

  return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':')

}

function formatNumber(n) {

  n = n.toString()

  return n[1] ? n : '0' + n

}

module.exports = {

  formatTime: formatTime

}
7、
2. pages返回顶部
1、image
a) .js
Page({

    data: {

        url: "",

        hidden: false,

        toastHidden: true,

        modalHidden: true,

        toastText: "数据异常",

        loadingText: "加载中..."

    },

    onLoad: function (options) {

        that = this;

        if (options == null || options.url == null) {

            this.setData({ hidden: true, toastHidden: false });

            return;

        }

        this.setData({

            hidden: true,

            toastHidden: true,

            url: options.url

        })

    },

    //Toast信息改变

    onToastChanged: function (event) {

        this.setData({ toastHidden: true });

    },

    // 长按

    onlongclick: function () {

        this.setData({ modalHidden: false });

    },

    // 保存

    onSaveClick: function (event) {

        var mUrl = "";

        if (event.currentTarget.dataset.url != null)

            mUrl = event.currentTarget.dataset.url;

        console.log("download：" + mUrl);

        saveImage(mUrl);

    },

    // 取消

    onCancelClick: function (event) {

        this.setData({ modalHidden: true });

    },

});

var that;

/**

 * 保存图片

 */

function saveImage(mUrl) {

    that.setData({

        hidden: false,

        toastHidden: true,

        modalHidden: true,

        loadingText: "下载中..."

    });

    wx.downloadFile({

        url: mUrl,

        type: 'image',

        success: function (res) {

            console.log("download success");

            that.setData({

                hidden: true,

                toastHidden: false,

                toastText: "恭喜你，图片保存成功"

            });

        },

        fail: function (res) {

            console.log("download fail");

            that.setData({

                hidden: true,

                toastHidden: false,

                toastText: "保存失败，请稍后再试"

            });

        },

        complete: function (res) {

            console.log("download complete");

        }

    })

}
b) .json
{}
c) .wxml
<!--image.wxml-->

<view >

    <loading hidden="{{hidden}}" >

     {{loadingText}}

    </loading>

    <toast hidden="{{toastHidden}}" bindchange="onToastChanged">

        {{toastText}}

    </toast>

<view bindlongtap = "onlongclick">

    <image class = "bigImage" mode="aspectFill" src="{{url}}" />

</view>

<modal title="是否保存？" confirm-text="保存" cancel-text="取消" data-url="{{url}}"

    hidden="{{modalHidden}}" bindconfirm="onSaveClick" bindcancel="onCancelClick">

</modal>

</view>
d) .wxss
/*image.wxss*/

.bigImage{

    width: 95%;

    height: 1000rpx;

    margin: auto;

    overflow: auto;

    position: absolute;

    top:; left:; bottom:; right:;

}
e)
2、index
a) .js
//index.js

//获取应用实例

var app = getApp()

Page({

  data: {

    items: [],

    hidden: false,

    loading: false,

    // loadmorehidden:true,

    plain: false

  },

  onItemClick: function (event) {

    var targetUrl = "/pages/image/image";

    if (event.currentTarget.dataset.url != null)

      targetUrl = targetUrl + "?url=" + event.currentTarget.dataset.url;

    wx.navigateTo({

      url: targetUrl

    });

  },

  // loadMore: function( event ) {

  //   var that = this

  //   requestData( that, mCurrentPage + 1 );

  // },

  onReachBottom: function () {

    console.log('onLoad')

    var that = this

    that.setData({

      hidden: false,

    });

    requestData(that, mCurrentPage + 1);

  },

  onLoad: function () {

    console.log('onLoad')

    var that = this

    requestData(that, mCurrentPage + 1);

  }

})

/**

 * 定义几个数组用来存取item中的数据

 */

var mUrl = [];

var mDesc = [];

var mWho = [];

var mTimes = [];

var mTitles = [];

var mCurrentPage = 0;

// 引入utils包下的js文件

var Constant = require('../../utils/constant.js');

/**

 * 请求数据

 * @param that Page的对象，用来setData更新数据

 * @param targetPage 请求的目标页码

 */

function requestData(that, targetPage) {

  wx.showToast({

    title: '加载中',

    icon: 'loading'

  });

  wx.request({

    url: Constant.GET_MEIZHI_URL + targetPage,

    header: {

      "Content-Type": "application/json"

    },

    success: function (res) {

      if (res == null ||

        res.data == null ||

        res.data.results == null ||

        res.data.results.length <= 0) {

        console.error("god bless you...");

        return;

      }

      for (var i = 0; i < res.data.results.length; i++)

        bindData(res.data.results[i]);

      //将获得的各种数据写入itemList，用于setData

      var itemList = [];

      for (var i = 0; i < mUrl.length; i++)

        itemList.push({ url: mUrl[i], desc: mDesc[i], who: mWho[i], time: mTimes[i], title: mTitles[i] });

      that.setData({

        items: itemList,

        hidden: true,

        // loadmorehidden:false,

      });

      mCurrentPage = targetPage;

      wx.hideToast();

    }

  });

}

/**

 * 绑定接口中返回的数据

 * @param itemData Gank.io返回的content;

 */

function bindData(itemData) {

  var url = itemData.url.replace("//ww", "//ws");

  var desc = itemData.desc;

  var who = itemData.who;

  var times = itemData.publishedAt.split("T")[0];

  mUrl.push(url);

  mDesc.push(desc);

  mWho.push(who);

  mTimes.push(times);

  mTitles.push("publish by：" + "@" + who + " —— " + times);

}
b) .json
{}
c) .wxml
<!--index.wxml-->

<view>

  <view class= "card" wx:for = "{{items}}">

    <view  data-url="{{item.url}}" bindtap = "onItemClick">

       <image class= "image" mode="aspectFill" src="{{item.url}}"/>

       <view class="title">{{item.title}}</view>

    </view>

  </view>

</view>
d) .wxss
/**index.wxss**/

.card {

    border: 2px solid #ffffff;

    border-radius: 5px;

    background-color: #ffffff;

    box-shadow: 0px 5px 1px #cccccc;

    margin: 8px;

    position: relative;

}

.loadmore {

    border: 0px solid #ffffff;

    border-radius: 5px;

    background-color: #ffffff;

    box-shadow: 0px 5px 1px #cccccc;

    margin: 8px;

}

.image{

  width:100%;

  height:240px;

}

.title {

    padding: 14px;

    font-size: 14px;

}
e)
3、
3.返回顶部
 
4.返回顶部
1、https://gank.io/api/data/%E7%A6%8F%E5%88%A9/10/1
{"error":false,"results":[{"_id":"5b7b836c9d212201e982de6e","createdAt":"2018-08-21T11:13:48.989Z","desc":"2018-08-21","publishedAt":"2018-08-21T00:00:00.0Z","source":"web","type":"\u798f\u5229","url":"https://ws1.sinaimg.cn/large/0065oQSqly1fuh5fsvlqcj30sg10onjk.jpg","used":true,"who":"lijinshanmx"},{"_id":"5b74e9409d21222c52ae4cb4","createdAt":"2018-08-16T11:02:24.289Z","desc":"2018-08-16","publishedAt":"2018-08-16T00:00:00.0Z","source":"api","type":"\u798f\u5229","url":"https://ws1.sinaimg.cn/large/0065oQSqly1fubd0blrbuj30ia0qp0yi.jpg","used":true,"who":"lijinshan"},{"_id":"5b7102749d2122341d563844","createdAt":"2018-08-13T12:00:52.458Z","desc":"2018-08-13","publishedAt":"2018-08-13T00:00:00.0Z","source":"api","type":"\u798f\u5229","url":"https://ww1.sinaimg.cn/large/0065oQSqly1fu7xueh1gbj30hs0uwtgb.jpg","used":true,"who":"lijinshan"},{"_id":"5b6bad449d21226f45755582","createdAt":"2018-08-09T10:56:04.962Z","desc":"2018-08-09","publishedAt":"2018-08-09T00:00:00.0Z","source":"web","type":"\u798f\u5229","url":"https://ww1.sinaimg.cn/large/0065oQSqgy1fu39hosiwoj30j60qyq96.jpg","used":true,"who":"lijinshanmx"},{"_id":"5b67b7fd9d2122195bdbd806","createdAt":"2018-08-06T10:52:45.809Z","desc":"2018-08-06","publishedAt":"2018-08-06T00:00:00.0Z","source":"api","type":"\u798f\u5229","url":"https://ww1.sinaimg.cn/large/0065oQSqly1ftzsj15hgvj30sg15hkbw.jpg","used":true,"who":"lijinshan"},{"_id":"5b63cd4e9d21225e0d3f58c9","createdAt":"2018-08-03T11:34:38.672Z","desc":"2018-08-03","publishedAt":"2018-08-03T00:00:00.0Z","source":"api","type":"\u798f\u5229","url":"https://ww1.sinaimg.cn/large/0065oQSqgy1ftwcw4f4a5j30sg10j1g9.jpg","used":true,"who":"lijinshan"},{"_id":"5b6151509d21225206860f08","createdAt":"2018-08-01T14:21:04.556Z","desc":"2018-08-01","publishedAt":"2018-08-01T00:00:00.0Z","source":"api","type":"\u798f\u5229","url":"https://ww1.sinaimg.cn/large/0065oQSqly1ftu6gl83ewj30k80tites.jpg","used":true,"who":"lijinshan"},{"_id":"5b60356a9d212247776a2e0e","createdAt":"2018-07-31T18:09:46.825Z","desc":"2018-07-31","publishedAt":"2018-07-31T00:00:00.0Z","source":"api","type":"\u798f\u5229","url":"http://ww1.sinaimg.cn/large/0065oQSqgy1ftt7g8ntdyj30j60op7dq.jpg","used":true,"who":"lijinshan"},{"_id":"5b5e93499d21220fc64181a9","createdAt":"2018-07-30T12:25:45.937Z","desc":"2018-07-30","publishedAt":"2018-07-30T00:00:00.0Z","source":"web","type":"\u798f\u5229","url":"https://ww1.sinaimg.cn/large/0065oQSqgy1ftrrvwjqikj30go0rtn2i.jpg","used":true,"who":"lijinshanmx"},{"_id":"5b50107f421aa917a31c0565","createdAt":"2018-07-19T12:15:59.226Z","desc":"2018-07-19","publishedAt":"2018-07-19T00:00:00.0Z","source":"web","type":"\u798f\u5229","url":"https://ww1.sinaimg.cn/large/0065oQSqly1ftf1snjrjuj30se10r1kx.jpg","used":true,"who":"lijinshanmx"}]}
2、
5.返回顶部
0、
1、
 
6.返回顶部
 
作者：ylbtech
出处：http://ylbtech.cnblogs.com/
本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。

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