小程序（uniapp）骨架屏应用

时间：2019-12-01 00:28:35 收藏：0 阅读：1100

效果图

技术图片

注意点：

1, 引入组建后, template 标签内加入
<skeleton selector="skeleton" bgcolor="#FFF" v-if="showSkeleton"></skeleton>

其中 v-if="showSkeleton" 为显示骨架屏显示的参数。

2, data对象中设置showSkeleton: true // 默认一开始进入页面加载骨架屏内容。

骨架屏渲染形状有两种：矩形 & 圆形
在想显示骨架屏的区域的父级标签的 class 加入 skeleton 表示该class下的内容进行骨架屏元素加载
需要渲染矩形，则在该元素上的class加入skeleton-rect
需要渲染圆形，则在该元素上的class加入skeleton-radius

3, 渲染数据。

渲染骨架屏的元素，需要先填充元素。使vue能够根据数据的长度进行渲染。
列表类数据 字段值可为空。例如：

dataList: [
    {
        title: ‘‘,
        author: ‘‘,
        pubTime: ‘‘,
        avatar: ‘‘
    },
    {
        title: ‘‘,
        author: ‘‘,
        pubTime: ‘‘,
        avatar: ‘‘
    }
]

此时会渲染两条数据内容

skeleton.vue

<template>
  <div>
    <div class="wrap"
         :style="{‘width‘:systemInfo.width+‘px‘,‘height‘:systemInfo.height+‘px‘, ‘background-color‘:bgcolor}">
      <div v-for="(item,index) in skeletonRectLists"
           :index=‘index‘
           :key=‘index‘
           class="chiaroscuro"
           :style="{‘width‘:item.width+‘px‘,‘height‘:item.height+‘px‘,‘background-color‘:‘rgba(233, 2, 233,1)‘,‘position‘:‘absolute‘,‘left‘:item.left+‘px‘,‘top‘:item.top+‘px‘}">
      </div>
      <div v-for="(item,index) in skeletonCircleLists"
           :index=‘index‘
           :key="‘info2-‘+index"
           class="chiaroscuro"
           :style="{‘width‘:item.width+‘px‘,‘height‘:item.height+‘px‘,‘background-color‘:‘rgba(233, , 233,1)‘,‘border-radius‘:item.width+‘px‘,‘position‘:‘absolute‘,‘left‘:item.left+‘px‘,‘top‘:item.top+‘px‘}">
      </div>
    </div>
  </div>
</template>

<script>
/* eslint-disable */
export default {
  props: {
    bgcolor: { type: String, value: ‘#FFF‘ },
    selector: { type: String, value: ‘skeleton‘ },
  },

  data() {
    return {
      systemInfo: {},
      skeletonRectLists: [],
      skeletonCircleLists: [],
    };
  },

  components: {},

  methods: {
    rectHandle: function() {
      const that = this;
      //绘制不带样式的节点
      uni
        .createSelectorQuery()
        .selectAll(`.${this.selector}-rect`)
        .boundingClientRect()
        .exec(function(res) {
          that.skeletonRectLists = res[0];
        });
    },

    radiusHandle: function() {
      const that = this;
      uni
        .createSelectorQuery()
        .selectAll(`.${this.selector}-radius`)
        .boundingClientRect()
        .exec(function(res) {
            console.log(res[0].length);
          that.skeletonCircleLists = res[0];
        });
    },
  },

  mounted: function() {
    //默认的首屏宽高，防止内容闪现
    const systemInfo = uni.getSystemInfoSync();
    (this.systemInfo = {
      width: systemInfo.windowWidth,
      height: systemInfo.windowHeight,
    });
    const that = this;
    //绘制背景
    uni
      .createSelectorQuery()
      .selectAll(`.${this.selector}`)
      .boundingClientRect()
      .exec(function(res) {
        that.systemInfo.height = res[0][0].height + res[0][0].top || 0;
      });

    //绘制矩形
    this.rectHandle();

    //绘制圆形
    this.radiusHandle();
  },
};
/* eslint-enable */
</script>

<style scoped>
.wrap {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 9998;
  overflow: hidden;
}
.chiaroscuro {
  animation-duration: 1s;
  animation-fill-mode: forwards;
  animation-iteration-count: infinite;
  animation-name: placeHolderShimmer;
  animation-timing-function: linear;
  background: #f6f7f8;
  background: linear-gradient(to right, #eeeeee 8%, #dddddd 18%, #eeeeee 33%);
  background-size: 800px 104px;
  height: 40px;
  position: relative;
}
@keyframes placeHolderShimmer{
  0% {
    background-position: -468px 0
  }
  100% {
    background-position: 468px 0
  }
}
</style>

index.vue 页面

<template>
    <view class="content ">
        <skeleton selector="skeleton" bgcolor="#FFF" v-if="showSkeleton"></skeleton>
        <view class="skeleton">
            <image class="logo skeleton-rect" src="/static/logo.png"></image>
            <view class="text-area skeleton-radius">
                <text class="title">{{title}}</text>
            </view>
        </view>
        
    </view>
</template>

<script>
    import skeleton from ‘../index/skeleton‘
    export default {
        data() {
            return {
                showSkeleton:true,
                title: ‘Hello‘,
                
            }
        },
        components:{
            ‘skeleton‘:skeleton
        },
        created() {
            this.reloadData();
        },
        methods: {
             reloadData() {
                  setTimeout(() => {
                    this.showSkeleton = false
                  }, 2000)
                },
        }
    }
</script>

参考地址:https://www.cnblogs.com/miku561/p/10726085.html