1.在components 里面创建loading.vue

<template>
	<view  v-show="loadingShow">
	<view class="request-loading-view">
		<view class="loading-view"><view class="loading"></view></view>
	</view>
	</view>
</template>
<script>
export default {
	data() {
		return {};
	},
	computed: {
		//计算属性判断vuex中的显示状态
		loadingShow() {
			return this.$store.state.loading.requestLoading;
		}
	}
};
</script>
 
<style scoped>
.request-loading-view {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	z-index: 10000;
	background-color: rgba(0, 0, 0, 0.001);
	display: flex;
	justify-content: center;
	align-items: center;
}
.loading-view {
	width: 160upx;
	height: 160upx;
	background-color: rgba(0, 0, 0, 0.6);
	border-radius: 20upx;
	display: flex;
	justify-content: center;
	align-items: center;
}
 
/* 动画样式 */
.loading {
	border: 10upx solid rgba(0, 0, 0, 0.01);
	border-radius: 50%;
	border-top: 10upx solid #fff;
	border-right: 10upx solid #fff;
	border-bottom: 10upx solid #fff;
	width: 60upx;
	height: 60upx;
	-webkit-animation: spin 1.4s linear infinite;
	animation: spin 1.4s linear infinite;
}
 
@-webkit-keyframes spin {
	0% {
		-webkit-transform: rotate(0deg);
	}
 
	100% {
		-webkit-transform: rotate(360deg);
	}
}
 
@keyframes spin {
	0% {
		transform: rotate(0deg);
	}
 
	100% {
		transform: rotate(360deg);
	}
}
</style>

2.加载vuex在里面定义变量控制是否显示隐藏

const state = {
	requestLoading: false, //加载等待是否显示
}


const mutations = {

	//显示请求加载动画
	requestShowLoading(state) {
		state.requestLoading = true;
	},
	//隐藏请求加载动画
	requestHideLoading(state) {
		state.requestLoading = false;
	},
}

export default {
	namespaced: true,
	state,
	mutations,
}

3.在main.js里面导入组件和定义方法

//请求加载组件
import tLoading from '@/components/loading/loading.vue';

// 在main.js中注册全局组件
Vue.prototype.$store = store

//组件挂载到全局，方便每个页面使用
Vue.component('Loading', Loading);
 
//挂载全局显示/隐藏请求加载动画
function requestShowLoading(){
	this.$store.commit('ShowLoading');
}
function requestHideLoading(){
	this.$store.commit('HideLoading');
}
Vue.prototype.$showLoading = ShowLoading; //全局显示动画可以 this.$showLoading();
Vue.prototype.$hideLoading = HideLoading; //全局隐藏动画可以 this.$hideLoading();

4.在需要的页面使用Loading

例如：home.vue

<view>
		<!-- loading -->
		<Loading></Loading>
</view>

		onLoad() {
				this.$showLoading();
            数据加载完之后
                that.$hideLoading();
		},