如何在 Next.js 中实现加载屏幕

本文介绍了如何在 Next.js 中实现加载屏幕的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我是 nextjs 新手，使用 nextjs v9.3、next-redux-wrapper v5、@material-ui/core v4.2，以及自定义快递服务器.

我正在尝试在 Nextjs 应用程序中更改路线时实现加载屏幕，因此我正在使用 framer 运动用于页面之间的转换并且工作正常，但现在更改路线时如何使用加载组件?

我用了这些方法，但是没用:

在下一个 js 页面转换时加载屏幕
如何使用加载组件而不是 nprogress?

我目前的实现如下:

_app.js

import React, { useEffect } from "react";从@material-ui/core/styles"导入 { ThemeProvider }；从@material-ui/core"导入 { CssBaseline }；从../lib/theme"导入{主题}；从next-redux-wrapper"导入 withRedux；从react-redux"导入 { Provider }；从../store/store"导入reduxStore；从redux-persist/integration/react"导入 { PersistGate }；从framer-motion"导入{ AnimatePresence }；从../components/Navbar"导入导航栏；从../components/Meta"导入 Meta；功能我的应用程序(道具){使用效果(() => {const jssStyles = document.querySelector("#jss-server-side");if (jssStyles && jssStyles.parentNode)jssStyles.parentNode.removeChild(jssStyles);}, []);const { 组件，pageProps，商店，路由器 } = 道具；返回 (<ThemeProvider 主题={主题}><Css基线/><提供者商店={商店}><PersistGate 持久化器={store.__PERSISTOR} loading={null}><元/><导航栏 {...props}/><AnimatePresence exitBeforeEnter><组件 {...pageProps} key={router.route}/></AnimatePresence></PersistGate></提供者></主题提供者>);}使用Redux(reduxStore)(MyApp)导出默认值；

更新

 `___-_-_-_-_我的解决方案_-_-_-_-___`

方法1:在next.js v9.3中我使用framer-motion

导入反应，{使用效果，使用状态，} 来自反应"；从@material-ui/core/styles"导入{ ThemeProvider as MaterialThemeProvider }；从styled-components"导入{ ThemeProvider as StyledThemeProvider }；从@material-ui/core"导入 { CssBaseline }；从framer-motion"导入{ AnimatePresence，motion }；从../lib/theme"导入主题；从../components/Layout"导入布局；从react-loader-spinner"导入加载器；功能我的应用程序(道具){const { 组件，pageProps，路由器 } = 道具；//打击 useState &useEffect 用于跟踪更改路线常量 [isRouteChanging, setIsRouteChanging] = useState(false);使用效果(() => {const routeChangeStartHandler = () =>setIsRouteChanging(true);const routeChangeEndHandler = () =>setIsRouteChanging(false);router.events.on(routeChangeStart", routeChangeStartHandler);router.events.on(routeChangeComplete", routeChangeEndHandler);router.events.on(routeChangeError", routeChangeEndHandler);返回()=>{router.events.off(routeChangeStart", routeChangeStartHandler);router.events.off(routeChangeComplete", routeChangeEndHandler);router.events.off(routeChangeError", routeChangeEndHandler);};}, []);//useEffect config material-ui使用效果(() => {//移除服务端注入的 CSS.const jssStyles = document.querySelector("#jss-server-side");if (jssStyles && jssStyles.parentNode)jssStyles.parentNode.removeChild(jssStyles);}, []);返回 (<StyledThemeProvider 主题={主题}><MaterialThemeProvider 主题={主题}><Css基线/>{/*当路由改变时每个页面的动画*/}<布局>{isRouteChanging ?(

方法 2:在 next.js v10 中，我使用了nprogress":^0.2.0"

import React, { useEffect } from "react";从下一个/路由器"导入路由器；//MUI核心从@material-ui/core/CssBaseline"导入 CssBaseline；从@material-ui/core/styles"导入 { ThemeProvider }；//实用程序从Utils/theme"导入主题；//NProgress从nprogress"导入 NProgress；//绑定事件.Router.events.on(routeChangeStart", () => NProgress.start());Router.events.on(routeChangeComplete", () => NProgress.done());Router.events.on(routeChangeError", () => NProgress.done());功能 MyApp({ 组件, pageProps}) {//useEffect config material-ui使用效果(() => {//移除服务端注入的 CSS.const jssStyles = document.querySelector("#jss-server-side");if (jssStyles && jssStyles.parentNode)jssStyles.parentNode.removeChild(jssStyles);}, []);返回 (<提供者商店={商店}><ThemeProvider 主题={主题}><Css基线/><组件 {...pageProps}/></主题提供者></提供者>);}导出默认 MyApp；

解决方案

我就是这样弄的.在 _app.tsx 中:

import { useRouter } from 'next/router';常量 MyApp = ({主要组件，页面道具，}) =>{常量路由器 = useRouter();const [pageLoading, setPageLoading] = React.useState(false);React.useEffect(() => {常量句柄开始 = () =>{ setPageLoading(true);};常量句柄完成 = () =>{ setPageLoading(false);};router.events.on('routeChangeStart', handleStart);router.events.on('routeChangeComplete', handleComplete);router.events.on('routeChangeError', handleComplete);}, [路由器]);返回 (...{ 页面加载?(<div>加载中</div>): <MainComponent {...pageProps}/>}...)}

I am new in nextjs and using nextjs v9.3, next-redux-wrapper v5, @material-ui/core v4.2, and custom express server.

I am trying to implement a loading screen when changing routes in my Nextjs app so I am using framer motion for transition between page and works fine but now how can use loading component when changing routes?

I used these methods but it didn't work :

Loading Screen on next js page transition
How can I use a loading component instead of nprogress?

My current implementation is as follows:

_app.js

import React, { useEffect } from "react";
import { ThemeProvider } from "@material-ui/core/styles";
import { CssBaseline } from "@material-ui/core";
import { theme } from "../lib/theme";
import withRedux from "next-redux-wrapper";
import { Provider } from "react-redux";
import reduxStore from "../store/store";
import { PersistGate } from "redux-persist/integration/react";
import { AnimatePresence } from "framer-motion";
import Navbar from "../components/Navbar";
import Meta from "../components/Meta";

function MyApp(props) {
  useEffect(() => {
    const jssStyles = document.querySelector("#jss-server-side");
    if (jssStyles && jssStyles.parentNode)
      jssStyles.parentNode.removeChild(jssStyles);
  }, []);
  const { Component, pageProps, store, router } = props;
  return (
    <ThemeProvider theme={theme}>
      <CssBaseline />
      <Provider store={store}>
        <PersistGate persistor={store.__PERSISTOR} loading={null}>
          <Meta/>
          <Navbar {...props} />
          <AnimatePresence exitBeforeEnter>
            <Component {...pageProps} key={router.route}/>
          </AnimatePresence>
        </PersistGate>
      </Provider>
    </ThemeProvider>
  );
}

export default withRedux(reduxStore)(MyApp);

                           `___-_-_-_-_my solution_-_-_-_-___`

method 1 : in next.js v9.3 when I used framer-motion

import React, {
  useEffect,
  useState,
} from "react";
import { ThemeProvider as MaterialThemeProvider } from "@material-ui/core/styles";
import { ThemeProvider as StyledThemeProvider } from "styled-components";
import { CssBaseline } from "@material-ui/core";
import { AnimatePresence, motion } from "framer-motion";
import theme from "../lib/theme";
import Layout from "../components/Layout";
import Loader from "react-loader-spinner";

function MyApp(props) {
  const { Component, pageProps, router } = props;
  // blow useState & useEffect for tracking change route
  const [isRouteChanging, setIsRouteChanging] = useState(false);
  useEffect(() => {
    const routeChangeStartHandler = () => setIsRouteChanging(true);

    const routeChangeEndHandler = () => setIsRouteChanging(false);

    router.events.on("routeChangeStart", routeChangeStartHandler);
    router.events.on("routeChangeComplete", routeChangeEndHandler);
    router.events.on("routeChangeError", routeChangeEndHandler);
    return () => {
      router.events.off("routeChangeStart", routeChangeStartHandler);
      router.events.off("routeChangeComplete", routeChangeEndHandler);
      router.events.off("routeChangeError", routeChangeEndHandler);
    };
  }, []);

  // useEffect config material-ui
  useEffect(() => {
    // Remove the server-side injected CSS.
    const jssStyles = document.querySelector("#jss-server-side");
    if (jssStyles && jssStyles.parentNode)
      jssStyles.parentNode.removeChild(jssStyles);
  }, []);

  return (
    <StyledThemeProvider theme={theme}>
      <MaterialThemeProvider theme={theme}>
        <CssBaseline />
        {/*animation for each page when route changes*/}
        <Layout>
          {isRouteChanging ? (
            <motion.div
              initial={{
                opacity: 0,
                height: "90vh",
                display: "flex",
                justifyContent: "center",
                alignItems: "center",
              }}
              animate={{
                opacity: 1,
              }}
              exit={{
                opacity: 0,
              }}
            >
              <Loader
                type="Grid"
                color={theme.spinnerColor}
                height={80}
                width={80}
              />
            </motion.div>
          ) : (
            <AnimatePresence exitBeforeEnter>
              <Component {...pageProps} key={router.route} />
            </AnimatePresence>
          )}
        </Layout>
      </MaterialThemeProvider>
    </StyledThemeProvider>
  );
}

export default MyApp;

method 2 : in next.js v10 I used "nprogress": "^0.2.0"

import React, { useEffect } from "react";
import Router from "next/router";
// MUI Core
import CssBaseline from "@material-ui/core/CssBaseline";
import { ThemeProvider } from "@material-ui/core/styles";
// Utils
import theme from "Utils/theme";
// NProgress
import NProgress from "nprogress";

//Binding events.
Router.events.on("routeChangeStart", () => NProgress.start());
Router.events.on("routeChangeComplete", () => NProgress.done());
Router.events.on("routeChangeError", () => NProgress.done());


function MyApp({ Component, pageProps}) {

  // useEffect config material-ui
  useEffect(() => {
    // Remove the server-side injected CSS.
    const jssStyles = document.querySelector("#jss-server-side");
    if (jssStyles && jssStyles.parentNode)
      jssStyles.parentNode.removeChild(jssStyles);
  }, []);

  return (
    <Provider store={store}>
      <ThemeProvider theme={theme}>
              <CssBaseline />
              <Component {...pageProps} />
      </ThemeProvider>
    </Provider>
  );
}

export default MyApp;

解决方案

I did it in this way. In _app.tsx:

import { useRouter } from 'next/router';

const MyApp = ({
  MainComponent,
  pageProps,
}) => {
const router = useRouter();
    const [pageLoading, setPageLoading] = React.useState<boolean>(false);
    React.useEffect(() => {
        const handleStart = () => { setPageLoading(true); };
        const handleComplete = () => { setPageLoading(false); };

        router.events.on('routeChangeStart', handleStart);
        router.events.on('routeChangeComplete', handleComplete);
        router.events.on('routeChangeError', handleComplete);
      }, [router]);

return (
  ...
  { pageLoading
    ? (<div>Loading</div>)
    : <MainComponent {...pageProps} />
  }
  ...

)

}

这篇关于如何在 Next.js 中实现加载屏幕的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

Motion

如何在 Next.js 中实现加载屏幕

问题描述