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An article explaining in detail Vue+flex layout to implement TV end city list

藏色散人
Release： 2023-01-20 14:35:06
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This article brings you relevant knowledge about Vue layout. It mainly summarizes and introduces how Vue uses flex layout to achieve the TV-end city list effect. It is very comprehensive and detailed. Let’s take a look at it together. I hope Help those in need.

Vue uses flex layout to implement city list on TV

City list and search are very common in vue. This blog will talk about how to implement search and search. City list

1. Implement search layout code: 

<div class="search-bar">
  <input class="search-input" v-model="citySearchResult" :placeholder="searchDefault" :key="searchTitle"
         @endEditing="endEditing" :focusable="true" ref="searchInput" :duplicateParentState="true"
         :enableFocusBorder="true"/>
  <img  class="index-root-search-image-view-css" :src="searchIcon" alt="An article explaining in detail Vue+flex layout to implement TV end city list" >
  <span class="index-root-search-text-view-css" ref="textViewCity">{{searchDefaultKeyWord}}</span>
</div>
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2. Search layout css style code: 

.search-bar-root {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-top: 140px;
}.index-root-search-title-css {
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom: 40px;
}.search-bar-root .search-bar {
  background-color: #ffffff;
  width: 1000px;
  height: 100px;
  display: flex;
  justify-content: center;
  border-radius: 8px;
}.search-input {
  width: 780px;
  border-radius: 8px;
  font-size: 36px;
  font-family: PingFangSC-Regular, PingFang SC;
  font-weight: 400;
  color: #000000;
  margin-left: 40px;
  text-indent: 40px;
}.index-root-search-image-view-css {
  position: absolute;
  width: 32px;
  height: 32px;
  top: 35px;
  bottom: 35px;
  right: 0;
  margin-right: 102px;
  text-align: center;
}.index-root-search-flex-view-css {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  width: 1450px;
  margin-left: 245px;
  margin-right: 245px;
  margin-top: 40px;
}.index-root-search-text-view-css {
  font-size: 30px;
  font-family: PingFangSC-Regular, PingFang SC;
  color: #000000;
  text-align: center;
  font-weight: 400;
  top: 0;
  bottom: 0;
  right: 0;
  position: absolute;
  margin-right: 30px;
}.index-root-search-title-text-view-css {
  font-size: 70px;
  font-family: PingFangSC-Regular, PingFang SC;
  color: #ffffff;
  text-align: center;
  opacity: 1.0;
}.search-city-button-view-css {
  width: 270px;
  height: 100px;
  background-color: rgba(0, 0, 0, .1);
  margin-right: 20px;
  margin-top: 40px;
  border-radius: 11px;
  border-width: 2px;
  border-color: rgba(255, 255, 255, 0.1);
  focus-background-color: #fff;
}.search-city-button-view-css .city-sel-box {
  border-width: 2px;
  border-color: #32C5FF;
}
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3. City list layout code: 

<div class="index-root-search-flex-view-css" :clipChildren="false" ref="citySearch">
  <div class="search-city-button-view-css"
       v-for="(item,cityId) in hotCity" :focusable="true"
       :key="cityId"
       :ref="`hotRef${cityId}`" @focus="onFocus" :clipChildren="false">
    <div class="icon-location-reactive" ref="searchLocation" :duplicateParentState="true" style="visibility: visible;margin-right: 20px" v-if="showHot && cityId===0">
      <img src="@/assets/location.png" alt="" class="icon-location" showOnState="normal">
      <img src="@/assets/location_hot_focus.png" alt="" class="icon-location" showOnState="focused">
    </div>
    <span class="search-city-hot-text-iew-css" :duplicateParentState="true" showOnState="focused"
          ref="searchHotSelected"
          :style="{focusColor: focusHotTextColor,fontSize: textFontSize,fontWeight: textFontWeight,}">{{item.cityName}}</span>
  </div>
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4. City list css style code: 

.index-root-search-flex-view-css {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  width: 1450px;
  margin-left: 245px;
  margin-right: 245px;
  margin-top: 40px;
}.index-root-search-text-view-css {
  font-size: 30px;
  font-family: PingFangSC-Regular, PingFang SC;
  color: #000000;
  text-align: center;
  font-weight: 400;
  top: 0;
  bottom: 0;
  right: 0;
  position: absolute;
  margin-right: 30px;
}.index-root-search-title-text-view-css {
  font-size: 70px;
  font-family: PingFangSC-Regular, PingFang SC;
  color: #ffffff;
  text-align: center;
  opacity: 1.0;
}.search-city-button-view-css {
  width: 270px;
  height: 100px;
  background-color: rgba(0, 0, 0, .1);
  margin-right: 20px;
  margin-top: 40px;
  border-radius: 11px;
  border-width: 2px;
  border-color: rgba(255, 255, 255, 0.1);
  focus-background-color: #fff;
}.search-city-button-view-css .city-sel-box {
  border-width: 2px;
  border-color: #32C5FF;
}.icon-location-reactive {
  position: absolute;
  width: 26px;
  height: 34px;
  margin-left: 60px;
  margin-top: 30px;
  margin-bottom: 30px;
}.icon-location {
  width: 26px;
  height: 34px;
  position: absolute;
  left: 0;
  top: 0;
  z-index: 9;
}.search-city-hot-text-iew-css {
  width: 270px;
  height: 100px;
  background-color: rgba(50, 197, 255, 0.1);
  border-radius: 11px;
  border: 2px solid #32C5FF;
  font-size: 36px;
  font-family: PingFangSC-Regular, PingFang SC;
  text-align: center;
  color: white;
}.search-city-empty {
  margin-top: 40px;
  width: 425px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  margin-left: 535px;
}.search-city-empty .icon-no-connect {
  width: 425px;
  height: 307px;
}.search-city-empty .empty-txt {
  font-size: 32px;
  font-family: PingFangSC-Light, PingFang SC;
  font-weight: 300;
  color: #FFFFFF;
  margin-top: 60px;
}
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5. City list gets focus Event:

Mainly set in div: focusable="true" and @focus="onFocus"

<div class="search-city-button-view-css"
             v-for="(item,cityId) in hotCity" :focusable="true"
             :key="cityId"
             :ref="`hotRef${cityId}`" @focus="onFocus" :clipChildren="false">
          <div class="icon-location-reactive" ref="searchLocation" :duplicateParentState="true" style="visibility: visible;margin-right: 20px" v-if="showHot && cityId===0">
            <img src="@/assets/location.png" alt="" class="icon-location" showOnState="normal">
            <img src="@/assets/location_hot_focus.png" alt="" class="icon-location" showOnState="focused">
 </div>
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6. Set focus background color and font effect:

Mainly set: duplicateParentState="true" When the text gets focus, the color will not be affected by the parent layout. You can also set focus magnification and border effects 

:enableFocusBorder="true"//设置获得焦点时的边框
:focusScale="1.0"//设置焦点放大时的倍数
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Focus effect style: :style="{focusColor: focusHotTextColor,fontSize: textFontSize,fontWeight: textFontWeight,}

<span class="search-city-hot-text-iew-css" :duplicateParentState="true" showOnState="focused"
      ref="searchHotSelected"
      :style="{focusColor: focusHotTextColor,fontSize: textFontSize,fontWeight: textFontWeight,}">{{item.cityName}}</span>
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7. Search box input event: 

//输入内容之后请求城市列表接口刷新数据
endEditing(e) {
  console.log("--resultData--", this.citySearchResult)
},
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8. The event when the search box gets focus: 

onFocus(e) {
  this.focused = e.isFocused;
  this.$emit("onButtonFocused", e.isFocused);
},
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9. The TV soft keyboard pops up by default: 

mounted() {
  this.hotCity = hotCity;
  this.showHot = true;
  this.pageLoading = true
  //弹出软键盘
  this.$refs.searchInput.focus()
  //搜索框默认获取焦点
  this.setHideLoading()
},
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10. The complete code is as follows: 

<template>
  <div class="index-root-search-view-css" :clipChildren="false">
    <img  class="search-background-view-css" :src="searchImageData"/ alt="An article explaining in detail Vue+flex layout to implement TV end city list" >
    <div class="search-bar-root">
      <div class="index-root-search-title-css">
        <span class="index-root-search-title-text-view-css"> {{ searchTitle }}</span>
      </div>
      <div class="search-bar">
        <input class="search-input" v-model="citySearchResult" :placeholder="searchDefault" :key="searchTitle"
               @endEditing="endEditing" :focusable="true" ref="searchInput" :duplicateParentState="true"
               :enableFocusBorder="true"/>
        <img  class="index-root-search-image-view-css" :src="searchIcon" alt="An article explaining in detail Vue+flex layout to implement TV end city list" >
        <span class="index-root-search-text-view-css" ref="textViewCity">{{searchDefaultKeyWord}}</span>
      </div>
      <div class="index-root-search-flex-view-css" :clipChildren="false" ref="citySearch">
        <div class="search-city-button-view-css"
             v-for="(item,cityId) in hotCity" :focusable="true"
             :key="cityId"
             :ref="`hotRef${cityId}`" @focus="onFocus" :clipChildren="false">
          <div class="icon-location-reactive" ref="searchLocation" :duplicateParentState="true" style="visibility: visible;margin-right: 20px" v-if="showHot && cityId===0">
            <img src="@/assets/location.png" alt="" class="icon-location" showOnState="normal">
            <img src="@/assets/location_hot_focus.png" alt="" class="icon-location" showOnState="focused">
          </div>
          <span class="search-city-hot-text-iew-css" :duplicateParentState="true" showOnState="focused"
                ref="searchHotSelected"
                :style="{focusColor: focusHotTextColor,fontSize: textFontSize,fontWeight: textFontWeight,}">{{item.cityName}}</span>
        </div>
        <div class="search-city-empty" v-if="hotCity.length === 0">
          <img src="@/assets/no_content.png" alt="" class="icon-no-connect"/>
          <p class="empty-txt">没有搜索结果~</p>
        </div>
      </div>
    </div>
    <loading-view
        style="width: 100px;height: 100px;position: absolute;left:960px;right:960px;top:500px;bottom:500px;align-self:
        center;align-items: center;justify-content: center" v-show="pageLoading"/>
  </div></template><script>import searchImage from "@/assets/search_focus.png";import searchBackGroundImage from "@/assets/index-bg-qing.jpg";import {hotCity} from &#39;@/views/contsants&#39;;import {ESLaunchManager} from "@extscreen/es-core";export default {
  name: "city_list",
  props: {
    searchKeyWord: {
      type: String,
      default: &#39;&#39;,
    },
    focusTextColor: {
      type: String,
      default: &#39;#000000&#39;
    },
    focusHotTextColor: {
      type: String,
      default: &#39;#00EFFF&#39;
    },
    textColor: {
      type: String,
      default: &#39;#FFFFFF&#39;
    },
    textFontSize: {
      type: String,
      default: &#39;30px&#39;
    },
    textFontWeight: {
      type: Number,
      default: 400
    },
    focusBackground: {
      orientation: &#39;TL_BR&#39;,//TOP_BOTTOM,TR_BL, RIGHT_LEFT, BR_TL, BOTTOM_TOP,BL_TR,LEFT_RIGHT,TL_BR,
      cornerRadius: [40, 40, 40, 40],
      normal: [&#39;#00000000&#39;, &#39;#00000000&#39;],
      focused: [&#39;#F5F5F5&#39;, &#39;#F5F5F5&#39;],
    },
  },
  data() {
    return {
      pageLoading: false,
      text: &#39;search city&#39;,
      search: &#39;&#39;,
      searchIcon: searchImage,
      searchImageData: searchBackGroundImage,
      searchTitle: "切换城市",
      searchDefaultKeyWord: &#39;搜索&#39;,
      searchDefault: &#39;请输入城市名称首字母或全拼&#39;,
      focusColor: &#39;#f5f5f5&#39;,
      citySearchResult: "",
      hotCity: [],
      cityName: "",
      cityId: "",
      showHot: true,
      params: &#39;&#39;,
    }
  },
  activated() {
  },
  deactivated() {
    this.resetModel()
  },
  mounted() {
    this.hotCity = hotCity;
    this.showHot = true;
    this.pageLoading = true
    //弹出软键盘
    this.$refs.searchInput.focus()
    //搜索框默认获取焦点
    this.setHideLoading()
  },
  methods: {
    setHideLoading() {
      setTimeout(() => {
        this.pageLoading = false
      }, 500)
    },
    onFocus(e) {
      this.focused = e.isFocused;
      this.$emit("onButtonFocused", e.isFocused);
    },
    //输入内容之后请求城市
    endEditing(e) {
      console.log("--resultData--", this.citySearchResult)
    },
    onBackPressed() {
      ESLaunchManager.finishESPage();
    },
    resetModel() {
      this.citySearchResult = "";
      this.hotCity = [];
      this.pageLoading = false;
      this.searchTitle = "";
      this.searchDefaultKeyWord = "";
      this.searchDefault = "";
    },
  }
}</script><style scoped>.index-root-search-view-css {
  width: 1920px;
  height: 1080px;
  background-color: transparent;
}.search-background-view-css {
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  background-color: transparent;
}.search-bar-root {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-top: 140px;
}.index-root-search-title-css {
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom: 40px;
}.search-bar-root .search-bar {
  background-color: #ffffff;
  width: 1000px;
  height: 100px;
  display: flex;
  justify-content: center;
  border-radius: 8px;
}.search-input {
  width: 780px;
  border-radius: 8px;
  font-size: 36px;
  font-family: PingFangSC-Regular, PingFang SC;
  font-weight: 400;
  color: #000000;
  margin-left: 40px;
  text-indent: 40px;
}.index-root-search-image-view-css {
  position: absolute;
  width: 32px;
  height: 32px;
  top: 35px;
  bottom: 35px;
  right: 0;
  margin-right: 102px;
  text-align: center;
}.index-root-search-flex-view-css {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  width: 1450px;
  margin-left: 245px;
  margin-right: 245px;
  margin-top: 40px;
}.index-root-search-text-view-css {
  font-size: 30px;
  font-family: PingFangSC-Regular, PingFang SC;
  color: #000000;
  text-align: center;
  font-weight: 400;
  top: 0;
  bottom: 0;
  right: 0;
  position: absolute;
  margin-right: 30px;
}.index-root-search-title-text-view-css {
  font-size: 70px;
  font-family: PingFangSC-Regular, PingFang SC;
  color: #ffffff;
  text-align: center;
  opacity: 1.0;
}.search-city-button-view-css {
  width: 270px;
  height: 100px;
  background-color: rgba(0, 0, 0, .1);
  margin-right: 20px;
  margin-top: 40px;
  border-radius: 11px;
  border-width: 2px;
  border-color: rgba(255, 255, 255, 0.1);
  focus-background-color: #fff;
}.search-city-button-view-css .city-sel-box {
  border-width: 2px;
  border-color: #32C5FF;
}.icon-location-reactive {
  position: absolute;
  width: 26px;
  height: 34px;
  margin-left: 60px;
  margin-top: 30px;
  margin-bottom: 30px;
}.icon-location {
  width: 26px;
  height: 34px;
  position: absolute;
  left: 0;
  top: 0;
  z-index: 9;
}.search-city-hot-text-iew-css {
  width: 270px;
  height: 100px;
  background-color: rgba(50, 197, 255, 0.1);
  border-radius: 11px;
  border: 2px solid #32C5FF;
  font-size: 36px;
  font-family: PingFangSC-Regular, PingFang SC;
  text-align: center;
  color: white;
}.search-city-empty {
  margin-top: 40px;
  width: 425px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  margin-left: 535px;
}.search-city-empty .icon-no-connect {
  width: 425px;
  height: 307px;
}.search-city-empty .empty-txt {
  font-size: 32px;
  font-family: PingFangSC-Light, PingFang SC;
  font-weight: 300;
  color: #FFFFFF;
  margin-top: 60px;
}</style>
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11. The screenshot of the effect achieved is as follows:

An article explaining in detail Vue+flex layout to implement TV end city list

An article explaining in detail Vue+flex layout to implement TV end city list

Related recommendations: vuejs video tutorial

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Related labels：
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source：juejin.im
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