http://www.wxapp-union.com/forum.php?mod=viewthread&tid=1644&extra=page=1&filter=lastpost&orderby=lastpost&dateline=604800&typeid=6
切换城市.gif (159.27 KB, 下载次数: 22)
下载附件
效果图
2016-12-23 22:59 上传
js： [JavaScript] 纯文本查看 复制代码 ? 001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016 017 018 019 020 021 022 023 024 025 026 027 028 029 030 031 032 033 034 035 036 037 038 039 040 041 042 043 044 045 046 047 048 049 050 051 052 053 054 055 056 057 058 059 060 061 062 063 064 065 066 067 068 069 070 071 072 073 074 075 076 077 078 079 080 081 082 083 084 085 086 087 088 089 090 091 092 093 094 095 096 097 098 099 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 var city = require( '../../utils/city.js' ); Page({ data: { searchLetter: [], showLetter: "" , winHeight: 0, tHeight:0, bHeight:0, startPageY:0, cityList:[], isShowLetter: false , scrollTop:0, city: "" }, onLoad: function (options) { // 生命周期函数--监听页面加载 var searchLetter = city.searchLetter; var cityList=city.cityList(); // console.log(cityInfo); var sysInfo = wx.getSystemInfoSync(); console.log(sysInfo); var winHeight = sysInfo.windowHeight; //添加要匹配的字母范围值 //1、更加屏幕高度设置子元素的高度 var itemH = winHeight / searchLetter.length; var tempObj = []; for ( var i = 0; i < searchLetter.length; i++) { var temp = {}; temp.name = searchLetter[i]; temp.tHeight = i * itemH; temp.bHeight = (i + 1) * itemH; tempObj.push(temp) } this .setData({ winHeight: winHeight, itemH: itemH, searchLetter: tempObj, cityList:cityList }) console.log( this .data.cityInfo); }, onReady: function () { // 生命周期函数--监听页面初次渲染完成 }, onShow: function () { // 生命周期函数--监听页面显示 }, onHide: function () { // 生命周期函数--监听页面隐藏 }, onUnload: function () { // 生命周期函数--监听页面卸载 }, onPullDownRefresh: function () { // 页面相关事件处理函数--监听用户下拉动作 }, onReachBottom: function () { // 页面上拉触底事件的处理函数 }, onShareAppMessage: function () { // 用户点击右上角分享 return { title: 'title' , // 分享标题 desc: 'desc' , // 分享描述 path: 'path' // 分享路径 } }, searchStart: function (e) { var showLetter = e.currentTarget.dataset.letter; var pageY = e.touches[0].pageY; this .setScrollTop( this ,showLetter); this .nowLetter(pageY, this ); this .setData({ showLetter: showLetter, startPageY: pageY, isShowLetter: true , }) }, searchMove: function (e) { var pageY = e.touches[0].pageY; var startPageY= this .data.startPageY; var tHeight= this .data.tHeight; var bHeight= this .data.bHeight; var showLetter = 0; console.log(pageY); if (startPageY-pageY>0){ //向上移动 if (pageY<tHeight){ // showLetter=this.mateLetter(pageY,this); this .nowLetter(pageY, this ); } } else { //向下移动 if (pageY>bHeight){ // showLetter=this.mateLetter(pageY,this); this .nowLetter(pageY, this ); } } }, searchEnd: function (e) { // console.log(e); // var showLetter=e.currentTarget.dataset.letter; var that= this ; setTimeout( function (){ that.setData({ isShowLetter: false }) },1000) }, nowLetter: function (pageY, that) { //当前选中的信息 var letterData = this .data.searchLetter; var bHeight = 0; var tHeight = 0; var showLetter= "" ; for ( var i = 0; i < letterData.length; i++) { if (letterData[i].tHeight <= pageY && pageY<= letterData[i].bHeight) { bHeight = letterData[i].bHeight; tHeight = letterData[i].tHeight; showLetter = letterData[i].name; break ; } } this .setScrollTop(that,showLetter); that.setData({ bHeight:bHeight, tHeight:tHeight, showLetter:showLetter, startPageY:pageY }) }, bindScroll: function (e){ console.log(e.detail) }, setScrollTop: function (that,showLetter){ var scrollTop=0; var cityList=that.data.cityList; var cityCount=0; var initialCount=0; for ( var i=0;i<cityList.length;i++){ if (showLetter==cityList[i].initial){ scrollTop=initialCount*30+cityCount*41; break ; } else { initialCount++; cityCount+=cityList[i].cityInfo.length; } } that.setData({ scrollTop:scrollTop }) }, bindCity: function (e){ var city=e.currentTarget.dataset.city; this .setData({city:city}) } }) wxml: [AppleScript] 纯文本查看 复制代码 ? 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 < view class = "searchLetter touchClass" > < view wx : for = "{{searchLetter}}" style = "height:{{itemH}}px" wx : key = "index" data - letter = "{{item.name}}" catchtouchstart = "searchStart" catchtouchmove = "searchMove" catchtouchend = "searchEnd" > { { item . name } } < / view > < / view > < block wx : if = "{{isShowLetter}}" > < view class = "showSlectedLetter" > { { showLetter } } < / view > < / block > < view > 当前选择城市： { { city } } < / view > < scroll - view scroll - y = "true" style = "height:{{winHeight}}px" bindscroll = "bindScroll" scroll - top = "{{scrollTop}}" > < view class = "selection" wx : for = "{{cityList}}" wx : key = "{{item.initial}}" > < view class = "item_letter" > { { item .initial } } < / view > < view class = "item_city" wx : for = "{{item.cityInfo}}" wx : for - item = "ct" wx : key = "{{ct.id}}" data - city = "{{ct.city}}" bindtap = "bindCity" > { { ct. city } } < / view > < / view > < / scroll - view > css: [CSS] 纯文本查看 复制代码 ? 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 .searchLetter{ position : fixed ; right : 0 ; width : 40px ; height : 100% ; text-align : center ; justify- content : center ; display : flex; flex- direction : column; color : #666 ; z-index : 1 } .searchLetter view{ height : 70 rpx; } .touchClass{ background-color : rgba( 0 , 0 , 0 , 0.5 ); color : #fff ; } .showSlectedLetter{ background-color : rgba( 0 , 0 , 0 , 0.5 ); color : #fff ; display : flex; justify- content : center ; align-items: center ; position : fixed ; top : 50% ; left : 50% ; margin : -50px ; width : 100px ; height : 100px ; border-radius: 10px ; font-size : 26px ; z-index : 1 } .selection{ display : flex; width : 100% ; flex- direction : column; } .item_letter{ display : flex; background-color : #f8f8f8 ; height : 30px ; padding-left : 10px ; align-items: center ; } .item_city{ display : flex; background-color : #fff ; height : 40px ; padding-left : 10px ; align-items: center ; border-bottom : 1px solid #f8f8f8 } 文件下载：