Vue如何利用flex布局实现TV端城市列表功能

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2023-07-15
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目录
  • 前言
  • 1.实现搜索布局代码：
  • 2.搜索布局css样式代码：
  • 3.城市列表布局代码：
  • 4.城市列表css样式代码：
  • 5.城市列表获取焦点的事件：
  • 6.设置焦点背景颜色和字体效果：
  • 7.搜索框输入事件：
  • 8.搜索框获取焦点的事件：
  • 9.默认弹出TV软键盘：
  • 10.完整代码如下：
  • 11.实现的效果截图如下：
  • 总结

前言

vue中城市列表和搜索很常见，这篇博客就来说说咋实现搜索和城市列表

1.实现搜索布局代码：

<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">
  <span class="index-root-search-text-view-css" ref="textViewCity">{{searchDefaultKeyWord}}</span>
</div>

2.搜索布局css样式代码：

.search-bar-root {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-top:px;
}
​
.index-root-search-title-css {
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom:px;
}
​
.search-bar-root .search-bar {
  background-color: #ffffff;
  width:px;
  height:px;
  display: flex;
  justify-content: center;
  border-radius:px;
}
​
.search-input {
  width:px;
  border-radius:px;
  font-size:px;
  font-family: PingFangSC-Regular, PingFang SC;
  font-weight:;
  color: #;
  margin-left:px;
  text-indent:px;
}
​
.index-root-search-image-view-css {
  position: absolute;
  width:px;
  height:px;
  top:px;
  bottom:px;
  right:;
  margin-right:px;
  text-align: center;
}
​
.index-root-search-flex-view-css {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  width:px;
  margin-left:px;
  margin-right:px;
  margin-top:px;
}
​
.index-root-search-text-view-css {
  font-size:px;
  font-family: PingFangSC-Regular, PingFang SC;
  color: #;
  text-align: center;
  font-weight:;
  top:;
  bottom:;
  right:;
  position: absolute;
  margin-right:px;
}
​
.index-root-search-title-text-view-css {
  font-size:px;
  font-family: PingFangSC-Regular, PingFang SC;
  color: #ffffff;
  text-align: center;
  opacity:.0;
}
​
.search-city-button-view-css {
  width:px;
  height:px;
  background-color: rgba(, 0, 0, .1);
  margin-right:px;
  margin-top:px;
  border-radius:px;
  border-width:px;
  border-color: rgba(, 255, 255, 0.1);
  focus-background-color: #fff;
}
​
.search-city-button-view-css .city-sel-box {
  border-width:px;
  border-color: #C5FF;
}

3.城市列表布局代码：

<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:px" 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>

4.城市列表css样式代码：

.index-root-search-flex-view-css {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  width:px;
  margin-left:px;
  margin-right:px;
  margin-top:px;
}
​
.index-root-search-text-view-css {
  font-size:px;
  font-family: PingFangSC-Regular, PingFang SC;
  color: #;
  text-align: center;
  font-weight:;
  top:;
  bottom:;
  right:;
  position: absolute;
  margin-right:px;
}
​
.index-root-search-title-text-view-css {
  font-size:px;
  font-family: PingFangSC-Regular, PingFang SC;
  color: #ffffff;
  text-align: center;
  opacity:.0;
}
​
.search-city-button-view-css {
  width:px;
  height:px;
  background-color: rgba(, 0, 0, .1);
  margin-right:px;
  margin-top:px;
  border-radius:px;
  border-width:px;
  border-color: rgba(, 255, 255, 0.1);
  focus-background-color: #fff;
}
​
.search-city-button-view-css .city-sel-box {
  border-width:px;
  border-color: #C5FF;
}
​
.icon-location-reactive {
  position: absolute;
  width:px;
  height:px;
  margin-left:px;
  margin-top:px;
  margin-bottom:px;
}
​
.icon-location {
  width:px;
  height:px;
  position: absolute;
  left:;
  top:;
  z-index:;
}
​
.search-city-hot-text-iew-css {
  width:px;
  height:px;
  background-color: rgba(, 197, 255, 0.1);
  border-radius:px;
  border:px solid #32C5FF;
  font-size:px;
  font-family: PingFangSC-Regular, PingFang SC;
  text-align: center;
  color: white;
}
​
.search-city-empty {
  margin-top:px;
  width:px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  margin-left:px;
}
​
.search-city-empty .icon-no-connect {
  width:px;
  height:px;
}
​
.search-city-empty .empty-txt {
  font-size:px;
  font-family: PingFangSC-Light, PingFang SC;
  font-weight:;
  color: #FFFFFF;
  margin-top:px;
}

5.城市列表获取焦点的事件：

主要是在div设置:focusable="true"和@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:px" 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>

6.设置焦点背景颜色和字体效果：

主要是设置:duplicateParentState="true"当文本获得焦点时颜色不受父布局影响，还可以设置焦点放大和带边框效果

:enableFocusBorder="true"//设置获得焦点时的边框
:focusScale=".0"//设置焦点放大时的倍数

焦点效果的样式：: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>

7.搜索框输入事件：

//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)
},

8.搜索框获取焦点的事件：

onFocus(e) {
  this.focused = e.isFocused;
  this.$emit("onButtonFocused", e.isFocused);
},

9.默认弹出TV软键盘：

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()
},

10.完整代码如下：

<template>
  <div class="index-root-search-view-css" :clipChildren="false">
    <img class="search-background-view-css" :src="searchImageData"/>
    <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">
        <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:px" 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 ===">
          <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:px;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 '@/views/contsants';
import {ESLaunchManager} from "@extscreen/es-core";
​
export default {
  name: "city_list",
  props: {
    searchKeyWord: {
      type: String,
      default: '',
    },
    focusTextColor: {
      type: String,
      default: '#'
    },
    focusHotTextColor: {
      type: String,
      default: '#EFFF'
    },
    textColor: {
      type: String,
      default: '#FFFFFF'
    },
    textFontSize: {
      type: String,
      default: 'px'
    },
    textFontWeight: {
      type: Number,
      default:
    },
    focusBackground: {
      orientation: 'TL_BR',//TOP_BOTTOM,TR_BL, RIGHT_LEFT, BR_TL, BOTTOM_TOP,BL_TR,LEFT_RIGHT,TL_BR,
      cornerRadius: [, 40, 40, 40],
      normal: ['#', '#00000000'],
      focused: ['#FF5F5', '#F5F5F5'],
    },
  },
  data() {
    return {
      pageLoading: false,
      text: 'search city',
      search: '',
      searchIcon: searchImage,
      searchImageData: searchBackGroundImage,
      searchTitle: "切换城市",
      searchDefaultKeyWord: '搜索',
      searchDefault: '请输入城市名称首字母或全拼',
      focusColor: '#ff5f5',
      citySearchResult: "",
      hotCity: [],
      cityName: "",
      cityId: "",
      showHot: true,
      params: '',
    }
  },
  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
      },)
    },
    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:px;
  height:px;
  background-color: transparent;
}
​
.search-background-view-css {
  position: absolute;
  left:;
  top:;
  right:;
  bottom:;
  background-color: transparent;
}
​
.search-bar-root {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-top:px;
}
​
.index-root-search-title-css {
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom:px;
}
​
.search-bar-root .search-bar {
  background-color: #ffffff;
  width:px;
  height:px;
  display: flex;
  justify-content: center;
  border-radius:px;
}
​
.search-input {
  width:px;
  border-radius:px;
  font-size:px;
  font-family: PingFangSC-Regular, PingFang SC;
  font-weight:;
  color: #;
  margin-left:px;
  text-indent:px;
}
​
.index-root-search-image-view-css {
  position: absolute;
  width:px;
  height:px;
  top:px;
  bottom:px;
  right:;
  margin-right:px;
  text-align: center;
}
​
.index-root-search-flex-view-css {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  width:px;
  margin-left:px;
  margin-right:px;
  margin-top:px;
}
​
.index-root-search-text-view-css {
  font-size:px;
  font-family: PingFangSC-Regular, PingFang SC;
  color: #;
  text-align: center;
  font-weight:;
  top:;
  bottom:;
  right:;
  position: absolute;
  margin-right:px;
}
​
.index-root-search-title-text-view-css {
  font-size:px;
  font-family: PingFangSC-Regular, PingFang SC;
  color: #ffffff;
  text-align: center;
  opacity:.0;
}
​
.search-city-button-view-css {
  width:px;
  height:px;
  background-color: rgba(, 0, 0, .1);
  margin-right:px;
  margin-top:px;
  border-radius:px;
  border-width:px;
  border-color: rgba(, 255, 255, 0.1);
  focus-background-color: #fff;
}
​
.search-city-button-view-css .city-sel-box {
  border-width:px;
  border-color: #C5FF;
}
​
.icon-location-reactive {
  position: absolute;
  width:px;
  height:px;
  margin-left:px;
  margin-top:px;
  margin-bottom:px;
}
​
.icon-location {
  width:px;
  height:px;
  position: absolute;
  left:;
  top:;
  z-index:;
}
​
.search-city-hot-text-iew-css {
  width:px;
  height:px;
  background-color: rgba(, 197, 255, 0.1);
  border-radius:px;
  border:px solid #32C5FF;
  font-size:px;
  font-family: PingFangSC-Regular, PingFang SC;
  text-align: center;
  color: white;
}
​
.search-city-empty {
  margin-top:px;
  width:px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  margin-left:px;
}
​
.search-city-empty .icon-no-connect {
  width:px;
  height:px;
}
​
.search-city-empty .empty-txt {
  font-size:px;
  font-family: PingFangSC-Light, PingFang SC;
  font-weight:;
  color: #FFFFFF;
  margin-top:px;
}
</style>

11.实现的效果截图如下：

Vue echarts封装实现流程
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