父元件：

import React, {useRef} from 'react'
import UserName from 'src/components/UserName'

interface userRef {
  submit: Function
}

const UserInfo = () => {
  const userRef = useRef<userRef>()

  const checkInfo = () => {
    Promise.all([userRef.current?.submit()])
      .then(res => {
        console.log(
 
'校驗成功', res)
      })
      .catch(err => {
        console.log('err', err)
      })
  }
  return (
    <>
      <UserName title={'使用者姓名'} ref={userRef} />
      <button onClick={checkInfo}> </button>
    </>
  )
}

export default UserInfo

子元件：

import React, {forwardRef, useEffect, useImperativeHandle, useState} from 'react'
import {useSelector} from 
 
'react-redux'
import {Form, Input} from 'antd-mobile'

interface IProps {
  title: string
}

const UserName = forwardRef((props: IProps, ref) => {
  const [userName, setUserName] = useState('')
  const [form] = Form.useForm()
  const userInfo = useSelector((state: any) => state.userInfo)

  useEffect(() 
 
=> {
    const {name} = userInfo
    if(name){
      form.setFieldsValue({
        'uName': name
      })
    }
  }, [userInfo])
  const checkSubmit = () => {
    return new Promise((resolve, reject) => {
      form
        .validateFields()
        .then(res => {
          resolve(res)
        })
        .catch(err => {
          reject(err)
        })
    })
  }
  useImperativeHandle(ref, () => ({
    submit: checkSubmit,
  }))
  return (
    <Form layout='horizontal' form={form}>
      <div>{props.title}</div>
      <Form.Item
        name='uName'
        label='姓名'
        required
        rules={[
          {required: true, message: '姓名不能為空'},
          {pattern: /^[a-zA-Z0-9,\u4e00-\u9fa5]+$/, message: '不可包含特殊字元'},
        ]}>
        <Input
          placeholder='請輸入姓名'
          value={userName}
          onChange={val => setUserName(val)}
        />
      </Form.Item>
    </Form>
  )
})

export default UserName