我正在尝试为我的用户设置一个对话框/模式以订阅新闻通讯。 当它是普通的React应用程序时，代码可以完全正常工作，但目前我正在转换为Next.js。现在，我收到一个RuntimeError，抱怨钩子配置不正确。早些时候，我遇到了使Material UI与next.js一起运行的问题。但这是可以解决的。但是我在这里迷路了，有人知道发生了什么事吗？
我的组件：
import { TextValidator, ValidatorForm } from "react-material-ui-form-validator";
import Button from "@material-ui/core/Button";
import Dialog from "@material-ui/core/Dialog";
import DialogContent from "@material-ui/core/DialogContent";
import DialogContentText from "@material-ui/core/DialogContentText";
import DialogTitle from "@material-ui/core/DialogTitle";
import { Grid } from "@material-ui/core";
import React from "react";
import Slide from "@material-ui/core/Slide";
export default function EmailPopUp() {
const [showOpen, setShowOpen] = React.useState(true);
const [open, setOpen] = React.useState(showOpen);
const [form, setForm] = React.useState({
submitted: false,
formData: { email: "" },
});
const refInput = React.useRef("form");
const isBrowser = () => typeof window !== "undefined";
const handleClickOpen = () => setOpen(true);
const handleClose = () => setOpen(false);
const handleChange = (event) => {
const { formData } = form;
formData[event.target.name] = event.target.value;
setForm({ formData });
};
const handleSubmit = () => {
this.setForm({ submitted: true }, () => {
formSubmitAction();
});
};
const formSubmitAction = () => {
fetch(`${process.env.NEXT_PUBLIC_BACKEND_API}subscribe_newsletter/`, {
method: "POST",
headers: {
Accept: "application/json",
"Content-Type": "application/json",
},
body: JSON.stringify({
email: form.formData.email,
}),
}).finally(handleClose());
};
const Transition = React.forwardRef(function Transition(props, ref) {
return <Slide direction="up" ref={ref} {...props} />;
});
return (
isBrowser && (
<div className="dialog-container">
<Dialog
disableBackdropClick={true}
open={open}
TransitionComponent={Transition}
keepMounted
onClose={handleClose}
aria-labelledby="alert-dialog-slide-title"
aria-describedby="alert-dialog-slide-description"
>
<DialogTitle id="alert-dialog-slide-title">
Newsletter
</DialogTitle>
<DialogContent>
<DialogContentText id="alert-dialog-slide-description">
<Grid container spacing={2} justify="center">
<Grid item xs="auto">
<img
src="/images/newsletter-img.jpg"
className="newsletter-image"
/>
</Grid>
<Grid item xs="auto">
<div className="dialog-content">
</div>
<ValidatorForm ref={refInput} onSubmit={handleSubmit}>
<TextValidator
label="Email"
onChange={handleChange}
name="email"
value={form.formData.email}
validators={["required", "isEmail"]}
errorMessages={[
"this field is required",
"email is not valid",
]}
/>
<div className="newsletter-button">
<Button
type="submit"
variant="contained"
color="secondary"
>
Subscribe
</Button>
</div>
</ValidatorForm>
</Grid>
</Grid>
</DialogContentText>
</DialogContent>
</Dialog>
</div>
)
);
}
堆栈跟踪：
Unhandled Runtime Error
Error: Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for one of the following reasons:
1. You might have mismatching versions of React and the renderer (such as React DOM)
2. You might be breaking the Rules of Hooks
3. You might have more than one copy of React in the same app
See for tips about how to debug and fix this problem.
Call Stack
resolveDispatcher
../node_modules/react/cjs/react.development.js (1465:0)
Object.useContext
../node_modules/react/cjs/react.development.js (1473:0)
useTheme
../node_modules/@material-ui/styles/esm/useTheme/useTheme.js (4:19)
useStyles
../node_modules/@material-ui/styles/esm/makeStyles/makeStyles.js (222:24)
WithStyles
../node_modules/@material-ui/styles/esm/withStyles/withStyles.js (55:0)
renderWithHooks
node_modules/react-dom/cjs/react-dom.development.js (14803:0)
updateForwardRef
node_modules/react-dom/cjs/react-dom.development.js (16816:0)
beginWork
node_modules/react-dom/cjs/react-dom.development.js (18645:0)
HTMLUnknownElement.callCallback
node_modules/react-dom/cjs/react-dom.development.js (188:0)
Object.invokeGuardedCallbackDev
node_modules/react-dom/cjs/react-dom.development.js (237:0)
invokeGuardedCallback
node_modules/react-dom/cjs/react-dom.development.js (292:0)
beginWork$1
node_modules/react-dom/cjs/react-dom.development.js (23203:0)
performUnitOfWork
node_modules/react-dom/cjs/react-dom.development.js (22154:0)
workLoopSync
node_modules/react-dom/cjs/react-dom.development.js (22130:0)
performSyncWorkOnRoot
node_modules/react-dom/cjs/react-dom.development.js (21756:0)
eval
node_modules/react-dom/cjs/react-dom.development.js (11089:0)
unstable_runWithPriority
node_modules/scheduler/cjs/scheduler.development.js (653:0)
runWithPriority$1
node_modules/react-dom/cjs/react-dom.development.js (11039:0)
flushSyncCallbackQueueImpl
node_modules/react-dom/cjs/react-dom.development.js (11084:0)
flushSyncCallbackQueue
node_modules/react-dom/cjs/react-dom.development.js (11072:0)
flushSync
node_modules/react-dom/cjs/react-dom.development.js (21932:0)
Object.scheduleRefresh
node_modules/react-dom/cjs/react-dom.development.js (11626:0)
eval
node_modules/react-refresh/cjs/react-refresh-runtime.development.js (304:0)
Set.forEach
<anonymous>
Object.performReactRefresh
node_modules/react-refresh/cjs/react-refresh-runtime.development.js (293:0)
eval
node_modules/@next/react-refresh-utils/internal/helpers.js (124:0)
答案 0 :(得分：0)
此问题已解决。经过数小时的研究和尝试。自从我重构了对NextJs的React应用程序以来，我仍然与父目录中的旧应用程序共享一个文件。我将所有文件移到同一目录中，现在可以正常工作了。可是愚蠢的！ ：）