react 怎么改变列表状态

import React from 'react'; import { Layout,List, Button } from 'antd';  export default class App extends React.Component{    state={          list:[       {         "seqNo": 1001,         "appname_en": "Baidu's website",       },       {         "seqNo": 1002,         "appname_en": "Google's official website",       },       {         "seqNo": 1003,         "appname_en": "Amazon.com",       },       {         "seqNo": 1004,         "appname_en": "Sina website",       },       {         "seqNo": 1005,         "appname_en": "Tencent's official website",       },       {         "seqNo": 1006,         "appname_en": "Netease's official website",       },       {         "seqNo": 1007,         "appname_en": "China yahoo website",       }     ]   }   handleItem=(index,isReject)=>{     let list = this.state.list;     list[index].isReject = isReject;     this.setState({       list     })   }   render(){     return (<div style={{padding:'0 20px'}}>           <List           className="demo-loadmore-list"           itemLayout="horizontal"           dataSource={this.state.list}           renderItem={(item,index) => (             <List.Item               actions={[item.isReject===0?'已驳回':item.isReject===1?'已通过':<>                 <Button type="dashed" onClick={()=>this.handleItem(index,0)}>驳回</Button>,                  <Button type="dashed" onClick={()=>this.handleItem(index,1)}>通过</Button></>               ]}             >               <List.Item.Meta                 title={<a href="https://ant.design">{item.appname_en}</a>}                 description="Ant Design, a design language for background applications, is refined by Ant UED Team"               />               <div>content</div>             </List.Item>           )}         />      </div>     );   } }