Created
May 12, 2022 08:20
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LIFF with Next.js
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| import type { AppProps } from 'next/app' | |
| import { LiffProvider } from './LiffProvider' | |
| function MyApp({ Component, pageProps }: AppProps) { | |
| return ( | |
| <LiffProvider liffId={process.env.NEXT_PUBLIC_LIFF_ID as string}> | |
| <Component {...pageProps} /> | |
| </LiffProvider> | |
| ) | |
| } | |
| export default MyApp |
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| import type { NextPage } from 'next' | |
| import Head from 'next/head' | |
| import { useEffect } from 'react' | |
| import { useLiff } from './LiffProvider' | |
| const Home: NextPage = () => { | |
| const { liff } = useLiff() | |
| useEffect(() => { | |
| if (!liff) return; | |
| if (!liff.isLoggedIn()) { | |
| return liff.login() | |
| } | |
| liff.getProfile() | |
| .then(profile => { | |
| console.log(profile) | |
| }) | |
| },[liff]) | |
| return ( | |
| <div> | |
| <Head> | |
| <title>hello</title> | |
| </Head> | |
| <main> | |
| <h1>Hello liff</h1> | |
| </main> | |
| </div> | |
| ) | |
| } | |
| export default Home |
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| import { createContext, FC, PropsWithChildren, useContext, useEffect, useRef, useState } from "react"; | |
| import { Liff } from '@line/liff' | |
| const LiffContext = createContext<{ | |
| liff?: Liff | |
| }>({}) | |
| export const useLiff = () => useContext(LiffContext) | |
| export const LiffProvider: FC<PropsWithChildren<{ | |
| liffId: string; | |
| }>> = ({children, liffId}) => { | |
| const didLoadRef = useRef(false) | |
| const [liff, setLiff] = useState<Liff | undefined>() | |
| useEffect(() => { | |
| if (typeof window === 'undefined') return; | |
| if (didLoadRef.current === true) return; | |
| didLoadRef.current = true | |
| import('@line/liff') | |
| .then(async (data: any) => { | |
| await data.init({ | |
| liffId | |
| }) | |
| setLiff(data) | |
| }) | |
| }, [liffId]) | |
| return ( | |
| <LiffContext.Provider | |
| value={{ | |
| liff, | |
| }} | |
| > | |
| {children} | |
| </LiffContext.Provider> | |
| ) | |
| } |
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