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微信小程序实战之仿android fragment可滑动底部导航栏(4)

2017-04-18 09:37 1081 查看

底部3-5个选项的底部导航栏,目前在移动端上是主流布局之一,因此腾讯官方特地做了,可以通过设置,就可以做出了一个底部的导航栏。
相关教程:微信小程序教程系列之设置标题栏和导航栏(7)

但是通过设置的这个底部的导航栏,功能上比较固定,它必须要设置与它对应的一个页面,而且并不能滑动。

在业务上,有时候会比较限制,并不能完全满足所需。

又例如早前有人拿着UI稿问我,这种广告轮播图的样式,在小程序能不能实现呢?

我当时没有想了下,还不是很确定,因为小程序的轮播图的那几个小点点实在比较普通,样式单一。

因此特意写了一篇自定义轮播图的文章

链接:微信小程序实战之轮播图(3)

因此自定义就有这个必要性

下面介绍这个仿Android fragment可滑动的底部导航栏如何实现

项目最终效果图:

wxml:

<swiper current="{{currentTab}}" class="swiper-box" duration="300" style="height:{{winHeight - 51}}px" bindchange="bindChange">
<!-- frag01 -->
<swiper-item>
<scroll-view class="hot-box" scroll-y="true" upper-threshold="50" lower-threshold="100" bindscrolltolower="scrolltolower">
<!-- 列表 -->
<view class="themes-list">
<view class="themes-list-box" wx:for="{{datalists}}">
<view class="themes-list-main">
<view class="themes-list-name">{{item}}</view>
</view>
</view>
</view>
</scroll-view>
</swiper-item>
<!-- grag02 -->
<swiper-item>
<scroll-view class="hot-box" scroll-y="true" upper-threshold="50" lower-threshold="100" bindscrolltolower="scrolltolower">
<!-- 列表 -->
<view class="themes-list">
<view class="themes-list-box" wx:for="{{reslists}}">
<view class="themes-list-main">
<view class="themes-list-name">{{item}}</view>
</view>
</view>
</view>
</scroll-view>
</swiper-item>
<!-- grag03 -->
<swiper-item>
<scroll-view class="hot-box" scroll-y="true" upper-threshold="50" lower-threshold="100" bindscrolltolower="scrolltolower">
<!-- 列表 -->
<view class="themes-list">
<view class="themes-list-box" wx:for="{{datalists}}">
<view class="themes-list-main">
<view class="themes-list-name">{{item}}</view>
</view>
</view>
</view>
</scroll-view>
</swiper-item>
<!-- grag02 -->
<swiper-item>
<scroll-view class="hot-box" scroll-y="true" upper-threshold="50" lower-threshold="100" bindscrolltolower="scrolltolower">
<!-- 列表 -->
<view class="themes-list">
<view class="themes-list-box" wx:for="{{reslists}}">
<view class="themes-list-main">
<view class="themes-list-name">{{item}}</view>
</view>
</view>
</view>
</scroll-view>
</swiper-item>
</swiper>
<!--tab_top-->
<view class="swiper-tab">
<view class="swiper-tab-list {{currentTab==0 ? 'active' : ''}}" data-current="0" bindtap="swichNav">
<view class="swiper-tab-img"><image class="img" src="{{currentTab==0 ? iconlists[0].focus: iconlists[0].normal}}"></image></view>
<view>frag01</view>
</view>
<view class="swiper-tab-list {{currentTab==1 ? 'active' : ''}}" data-current="1" bindtap="swichNav">
<view class="swiper-tab-img"><image class="img" src="{{currentTab==1 ? iconlists[1].focus: iconlists[1].normal}}"></image></view>
<view>frag02</view>
</view>
<view class="swiper-tab-list {{currentTab==2 ? 'active' : ''}}" data-current="2" bindtap="swichNav">
<view class="swiper-tab-img"><image class="img" src="{{currentTab==2 ? iconlists[2].focus: iconlists[2].normal}}"></image></view>
<view>frag03</view>
</view>
<view class="swiper-tab-list {{currentTab==3 ? 'active' : ''}}" data-current="3" bindtap="swichNav">
<view class="swiper-tab-img"><image class="img" src="{{currentTab==3 ? iconlists[3].focus: iconlists[3].normal}}"></image></view>
<view>frag04</view>
</view>
</view>

wxss:

/*swiper*/
.swiper-box {
display: block;
height: 100%;
width: 100%;
overflow: hidden;
}
.hot-box {
display: block;
height: 100%;
font-family: Helvetica;
}
/* list */
.themes-list {
background: #fff;
display: block;
margin-bottom: 20px;
}
.themes-list-box {
display: block;
position: relative;
padding: 16px 20px;
border-bottom: 1px solid #f2f2f2;
}
.themes-list-main {
margin-left: 1px;
}
.themes-list-name {
font-size: 14px;
color: #444;
height: 20px;
line-height: 20px;
overflow: hidden;
}
/*tab*/
.swiper-tab {
height: 50px;
background: #fff;
display: flex;
position: relative;
z-index: 2;
flex-direction: row;
justify-content: center;
align-items: center;
border-top: 1px solid #ccc;
}
.swiper-tab-list {
margin: 0 20px;
padding: 0 4px;
font-size: 28rpx;
font-family: Helvetica;
}
.active {
/*border-bottom: 1px solid #FFCC00;*/
color: #FFCC00;
}
.swiper-tab-img {
text-align: center;
}
.img {
width:23px;
height: 23px;
}

js:

Page( {
data: {
winWidth: 0,
winHeight: 0,
currentTab: 0,
datalists : [
"习近平主持中央财经领导小组第十五次会议",
"李克强打叉的“万里审批图”成历史",
"新疆自治区举行反恐维稳誓师大会",
"朝鲜代表团抵达马来西亚处理金正男遇害案",
"习近平主持中央财经领导小组第十五次会议",
"李克强打叉的“万里审批图”成历史",
"新疆自治区举行反恐维稳誓师大会",
"砸锅卖铁!索尼是在走向毁灭 还是在奔向新生?"
],
reslists:["hello","thank you for your read","if u feel good","can u give me good?"],
iconlists:[
{normal:"../../images/wp.png",focus:"../../images/wpselect.png"},
{normal:"../../images/ss.png",focus:"../../images/ssselect.png"},
{normal:"../../images/hc.png",focus:"../../images/hcselect.png"},
{normal:"../../images/my.png",focus:"../../images/myselect.png"},
]
},
onLoad: function( options ) {
var that = this;
//获取系统信息
wx.getSystemInfo( {
success: function( res ) {
that.setData( {
winWidth: res.windowWidth,
winHeight: res.windowHeight
});
}
});
},
/**
* 滑动切换tab
*/
bindChange: function( e ) {
var that = this;
that.setData( { currentTab: e.detail.current });
},
/**
* 点击切换tab
*/
swichNav: function( e ) {
console.log(e)
var that = this;
if( this.data.currentTab === e.currentTarget.dataset.current ) {
//点击的是同一个,则不操作
return false;
} else {
that.setData( {
currentTab: e.currentTarget.dataset.current
})
}
}
})

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。

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