uniapp自定义全局loading组件（目前只适配微信小程序）

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已于 2025-03-21 14:51:25 修改

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分类专栏： uniapp 文章标签： uni-app vue.js 前端

于 2023-09-01 11:53:18 首次发布

本文链接：https://blog.youkuaiyun.com/weixin_45277892/article/details/132620663

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1.首先在项目根目录创建vue.config.js或者vite.config.js文件代码如下;

vue.config.js

module.exports = {
	chainWebpack: config => {
		config.module.rule('vue').use('vue-loader').loader('vue-loader').tap(options => {
			const compile = options.compiler.compile
			options.compiler.compile = (template, ...args) => {
				if(!args[0].resourcePath){
					return compile(template, ...args)
				}
				if ((args[0].resourcePath.match(/^pages/) && !args[0].resourcePath.match(/^pages\/user\/index\/index/)) || args[0].resourcePath.match(/^pageA/) || args[0].resourcePath.match(/^pagesLive/)) {
					template = template.replace(/[\s\S]+?<[\d\D]+?>/, _ => `${_}
								<new-request-loading></new-request-loading>
							`)
				}
				return compile(template, ...args)
			}
			return options
		})
	}
}

vite.config.js：

import { defineConfig } from 'vite';
import uni from '@dcloudio/vite-plugin-uni';
import dev_url from './env/development.js';
const injectLoadingComponent = () => ({
  name: 'inject-new-request-loading',
  transform(code, id) {
    if (!id.endsWith('.vue')) return

    const isTargetPath = (
      (id.includes('/pages/') && !id.includes('/pages/user/index/index')) ||
      id.includes('/pageA/') ||
      id.includes('/pagesLive/')
    )

    if (!isTargetPath) return
    return code.replace(/<template>([\s\S]*?)<\/template>/, 
      (match, content) => `<template>
  <new-request-loading />
  ${content}
</template>`)
  }
})

export default defineConfig({
  plugins: [
    injectLoadingComponent(),
    uni() 
  ],
  server: {
    proxy: {
      '/api': {
        target: dev_url.url,
        changeOrigin: true,
        rewrite: (path) => path.replace(/^\/api/, ''),
      },
    },
    host: "0.0.0.0",
    port: 8080,
    https: false,
  }
});

2.main.js添加这段代码替换uniapp全局loading方法并且全局挂载组件

// #ifdef MP-WEIXIN
uni.showLoading = function(){
	store.commit("changeLoading",true)
	// 注销uniapp showLoading方法
}

uni.hideLoading = function(){
	store.commit("changeLoading",false)
}
// #endif
//请求加载组件
import newRequestLoading from './components/ccloading.vue';

//组件挂载到全局，方便每个页面使用
Vue.component('new-request-loading', newRequestLoading);

3.添加loading组件通过vuex控制组件loading状态

<template>
	<view class="request-loading-view" v-if="loading">
		<view class="loading-view">
			<image class="loading-img" src="../static/loading.gif" mode=""></image>
		</view>
	</view>
</template>

<script>
	import {
		mapGetters
	} from 'vuex'
	export default {
		data() {
			return {};
		},
		computed: {
			...mapGetters(['loading'])
		},
	};
</script>

<style scoped>
	.request-loading-view {
		position: fixed;
		top: 0;
		left: 0;
		width: 100vw;
		height: 100vh;
		z-index: 999999;
		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 #666666;
		border-right: 10upx solid #666666;
		border-bottom: 10upx solid #666666;
		width: 60upx;
		height: 60upx;
		-webkit-animation: spin 1.4s linear infinite;
		animation: spin 1.4s linear infinite;
	}

	.loading-img {
		width: 60upx;
		height: 60upx;
	}

	@-webkit-keyframes spin {
		0% {
			-webkit-transform: rotate(0deg);
		}

		100% {
			-webkit-transform: rotate(360deg);
		}
	}

	@keyframes spin {
		0% {
			transform: rotate(0deg);
		}

		100% {
			transform: rotate(360deg);
		}
	}
</style>