最近项目有点忙,weex学习更新稍微慢了些。近期给自己列了一个学习计划表,想用weex做一个App,目前觉得列表比较好做,同时weex原生组件使用起来都很方便,就是一些自定义的组件在使用的时候,在引用上有一些坑需要注意。
前几天我准备使用<waterfall>在页面上做一个快捷入口,开始以为<waterfall>只能做瀑布流,看来我是小看他的功能了,其实<waterfall>是在<list>的基础上封装的,它是列表功能的核心组件,拥有平滑的滚动和高效的内存管理,具有回收和复用的能力,可以大幅优化内存占用和渲染性能。话不多少,下面看看具体的使用吧:
1. 和<list>相似,里面的子控件只能是cell
<waterfall column-count="4" column-width="auto" class="grildView_cellType">
<cell v-for="num in homeQuickList" :key="num.iconCopywriting">
<div class="grildViewType" >
<image class="itemPhoto" :src="num.imageUrl"/>
<text class="grildViewType_tv">{{num.iconCopywriting}}</text>
</div>
</cell>
</waterfall>
使用起来是不是觉得和<list>很相似呢
2. 如何让瀑布流变成规则的GridView(重点)
在官网上可以看到demo里设置的宽高都是自适应,也就是说<waterfall>会根据其Cell里的item高度,变成高度不一样的瀑布流。那么,要是我们把item的宽高都设定成固定的宽高,是不是就可以变成像GridView一样规则的横向列表了呢?
那下面我们就来设置一下试试看:
.itemPhoto{
width: 88px;
height: 88px;
}
.grildViewType{
justify-content: center;
flex-direction: column;
padding-top: 30px;
align-items: center;
}
.grildViewType_tv{
font-size: 26px;
color: #333;
margin-top: 20px;
}
.grildView_cellType{
margin-left: 25px;
margin-right: 25px;
justify-content: center;
}
以上是我设置<waterfall>的样式,那么我们运行看看效果:
这样一个完成weex原生组件<waterfall>做出来GridView的效果了,其中要特别注意item的样式要居中,如果对weex样式还不是很熟练的小伙伴就要边写样式边看Flex 布局教程了,我这里推荐一个图文并茂,容易理解的:Flex 布局教程。
最后我把完整的代码贴上,有需要的小伙伴可以尝试一下:
<template>
<scroller class="scroller">
<div class="homeFragmentType">
<slider class="sliderType" interval="3000" auto-play="true" >
<div class="sliderDivType" v-for="img in imageNewList" :key="img.adId">
<image class="imageType" resize="cover" :src="img.iconUrl"/>
</div>
<indicator class="indicator"></indicator>
</slider>
<!-- <homeAutoVerticalTextView class="homeTextView" ref="homeAutoVerticalTextView"/> -->
<div class="line"></div>
<waterfall column-count="4" column-width="auto" class="grildView_cellType">
<cell v-for="num in homeQuickList" :key="num.iconCopywriting">
<div class="grildViewType">
<image class="itemPhoto" :src="num.imageUrl"/>
<text class="grildViewType_tv">{{num.iconCopywriting}}</text>
</div>
</cell>
</waterfall>
<div class="canClickTitleType" @click="lazyTitleClick">
<div class="floor">
<text class="mainHeadingType">懒人计划</text>
<text class="subheadingType">乐轻松,从一键委托开始</text>
</div>
<div>
<text class="moreType">更多</text>
</div>
</div>
<customViewComponent class="textViewType" ref="customViewComponent"/>
<div class="canClickTitleType" @click="lazyTitleClick2">
<richText num="18738523758" class="richType" >手机号</richText>
</div>
<div class="canClickTitleType" @click="lazyTitleClick2">
<weexDialogView class="richType" />
</div>
</div>
</scroller>
</template>
<script>
const modal = weex.requireModule("modal");
import { GET } from "@/utils/requistUrl";
import { GET2 } from "@/utils/requistUrl2";
export default {
data: function() {
return {
imageNewList: [],
notifyList: [],
homeQuickList:[],
replaceList:[],
};
},
created: function() {
var self = this;
// this.$refs.weexTestComponent.focus2();
weex
.requireModule("weexTestModule")
.changeBackground("#DE1E7C", "首页", true);
// weex.requireModule('weexTestComponent').focus2();
self.homeBanranMethod();
self.homeNotifice();
self.homeQuick();
},
mounted: function() {
this.$refs.customViewComponent.focus2("黎明", "男", "25");
// self.$refs.homeAutoVerticalTextView.transmitData("肯定到这里了");
},
methods: {
lazyTitleClick() {
// weex.requireModule('weexTestModule').showToast();
weex
.requireModule("weexTestModule")
.changeBackground("#DE1E7C", "关于聚有财", false);
},
homeBanranMethod() {
var self = this;
GET("content/bannerList?", { position: "8" }, function(res) {
if (res.success != 1) {
modal.toast({ message: "轮播图请求错误!", duration: 2 });
} else {
self.imageNewList = res.datas.result || [];
// self.imageNewList = self.imageNewList.concat(res.datas.result);
}
});
},
homeNotifice() {
var self = this;
GET2(
"public/system/information?",
{ type: "0", pageNum: "1", pageSize: "6" },
function(res) {
if (!res.success) {
modal.toast({ message: "公告请求错误!", duration: 2 });
} else {
self.notifyList = res.datas.result || [];
self.$refs.homeAutoVerticalTextView.transmitData(
JSON.stringify(res)
);
}
}
);
},
homeQuick(){
var self=this;
GET2(
"app/quickentry?",
{ },
function(res) {
if (!res.success) {
modal.toast({ message: "快捷入口请求错误!", duration: 2 });
} else {
// self.replaceList=res.datas.result||[];
// self.homeQuickList = self.replaceList.slice(0,4);
self.homeQuickList = res.datas.result||[];
}
}
);
}
}
};
</script>
<style scoped>
.scroller{
width: 750px;
height: 2000px;
background-color: #fff
}
.homeFragmentType {
width: 750px;
height: 2000px;
}
.canClickTitleType {
flex-direction: row;
background-color: #fff;
direction: ltr;
margin-bottom: 1px;
}
.mainHeadingType {
font-size: 40px;
text-align: left;
padding-top: 25px;
margin-left: 30px;
font-weight: bold;
padding-bottom: 15px;
}
.subheadingType {
font-size: 24px;
text-align: left;
color: #999999;
margin-left: 30px;
padding-bottom: 15px;
}
.richType {
width: 400px;
height: 200px;
}
.textViewType {
width: 750px;
margin-top: 10px;
height: 400px;
background-color: #fff;
}
.sliderType {
width: 750px;
height: 436px;
}
.sliderDivType {
width: 750px;
height: 436px;
position: relative;
}
.imageType {
width: 750px;
height: 436px;
}
.indicator {
position: absolute;
left: 0;
right: 0;
bottom: 0;
height: 40px;
background-color: rgba(0, 0, 0, 0);
item-color: #ddd;
item-selected-color: rgb(0, 180, 255);
}
.homeTextView {
width: 750px;
height: 100px;
background-color: #fff;
}
.itemPhoto{
width: 88px;
height: 88px;
}
.grildViewType{
justify-content: center;
flex-direction: column;
padding-top: 30px;
align-items: center;
}
.grildViewType_tv{
font-size: 26px;
color: #333;
margin-top: 20px;
}
.grildView_cellType{
margin-left: 25px;
margin-right: 25px;
justify-content: center;
}
.line {
background-color: #ebebeb;
width: 750px;
height: 2px;
}
</style>