需求说明

    现有的设置单元列表,每个带有虚线加号的可以看做是一组设置单元,点击加号可以添加一组设置单元.点击设置单元右上角可以删除对应的设置单元.

实现思路说明

    利用数组元素添加或是删除的方式实现页面数量动态变化.由于每个设置单元内容都相同所以单独封装了一个子组件.下面是实现过程:
父页面

<template>
	<view class="out">
		<view class="content">
			<view class="setting">
				<setFriend class="addUnit" v-for="unitIndex in unitList" :unitList="unitList"></setFriend>
				<view class="addUnitClass" @click="addUnit">
					<image class="add_unit_img" src="../../static/add_unit.png"></image>
				</view>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				// 自定义数组,元素可以随便写
				unitList:[1,2,3]
			}
		},
		methods: {
			addUnit(){
				// 添加添加按钮,数组添加一个元素,元素内容可以任意
				this.unitList.push(1)
			}
		}
	}
</script>

<style lang="scss">
	uni-page-body,page {
				height:100%;
				background-color: rgb(242, 242,242);
			}
	.out{
		display: flex;
		justify-content: center;
		align-items: center;
		width: 90%;
		margin: auto;
		.content{
			width: 100%;
			// height: 400px;
			display: flex;
			justify-content: center;
			align-items: center;
			flex-direction: column;
			.setting{
				width: 100%;
				display: flex;
				justify-content: flex-start;
				align-items: center;
				flex-direction: row;
				flex-wrap:wrap;
				.addUnit{
					width: 50%;
					height: 150px;
					margin-bottom: 15px;
				}
				.addUnitClass{
					position: relative;
					top: 10px;
					margin-left: 7px;
					width: 45%;
					height: 150px;
					margin-bottom: 15px;
					background-color: white;
					display: flex;
					justify-content: center;
					align-items: center;
					border-radius: 5px;
					.add_unit_img{
						width: 80%;
						height: 80%;
					}
				}
				
				
			}
		}
	}		

	

</style>

设置单元子组件

<template>
	<view>
		<view class="unit">
			<image class="close_img" src="../../static/close_button.png" @click="closeUnit"></image>
			<view class="uni_item">
				<image class="upload_img" src="../../static/upload_img.png"></image>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		name:"setFriend",
		data() {
			return {
			};
		},
		// 设置属性unitList
		props:{
		     unitList: {
		     					type: Array,
		     					default: [1,2],
		     					required: false
		     				}
		   },
		methods:{
			closeUnit(){
			// 点击关闭按钮,数组减一处理
				if(this.unitList.length != 0){
					this.unitList.splice(0, 1);
				}
			}
		}
	}
</script>

<style lang="scss">
	uni-page-body,page {
				height:100%;
				background-color: rgb(242, 242,242);
			}
	.unit{
		width: 90%;
		height: 150px;
		background-color: white;
		margin-top: 9px;
		margin-left: 5px;
		border-radius: 5px;
		position: relative;
		left: 1px;
		.close_img{
			width: 20px;
			height: 20px;
			position: absolute;
			left:140px;
			top:-8px;
		}
		.uni_item{
			width: 100%;
			height: 100%;
			display: flex;
			justify-content: center;
			align-items: center;
			flex-direction: column;
			.upload_img{
				width:65px;
				height: 65px;
				margin-bottom: 10px;
			}
			}
		}
		
	}

</style>