React 父组件调用子组件函数

父组件代码

import React, { Component,Fragment } from 'react'
import TeamInfo from '../../component/TeamInfo'
export default class Team extends Component {
  constructor (props){
    super(props)
    this.Child = React.createRef();   //// 创建一个ref去储存DOM子元素
    this.getTeamList = this.getTeamList.bind(this)
  }
  showTeamInfoView(){
    this.Child.current.show()   //调用子元素函数 show   (括号里可以传参)
  }
  render() {
    return (
      <Fragment>
        <Button type="primary" className='btn' onClick={()=>{this.showTeamInfoView()}} icon={<PlusOutlined />}>新增</Button>
        // ref 绑定子元素
        <TeamInfo  ref={this.Child}></TeamInfo>
      </Fragment>
    )
  }

子组件代码

import React,{Component,Fragment} from 'react'

class TeamInfo extends Component{
        constructor(props){
                super(props)
                this.show=this.show.bind(this)
        }
        show(){
　　　　　　console.log("被父元素调用的函数")
        }
        render(){
                return(
                        <Fragment>
                        </Fragment>
                )
        }

}
export default TeamInfo