我有一個(gè)名為“ App”的主要React組件，其中包含處于其狀態(tài)的用戶輸入數(shù)據(jù)。每次用戶輸入新數(shù)據(jù)時(shí)，都會(huì)使用setState（）更新?tīng)顟B(tài)。然后將狀態(tài)作為道具傳遞給另一個(gè)名為“ IncomeList”的組件，該組件將數(shù)據(jù)呈現(xiàn)在屏幕上。但是，在用戶輸入一些數(shù)據(jù)后，IncomeList組件未處于更新?tīng)顟B(tài)。class App extends React.Component {  constructor(props) {    super(props);    this.addData = this.addData.bind(this);    this.state = {      expenses: [],      income: [],    }  }  addData(data) {    if (data.type == 'income')  {      this.setState((prevState) => {        income: prevState.income.push(data);      }, console.log(this.state.income));    } else if (data.type == 'expense') {      this.setState((prevState) => {        expenses: prevState.expenses.push(data);      })    }  }  render() {    return (      <div>        <UserInput addData={this.addData} />        <IncomeList income={this.state.income} />      </div>    );  }}// UserInput component which contain a formclass UserInput extends React.Component {  constructor(props) {    super(props);    this.addDataLocal = this.addDataLocal.bind(this);  }  addDataLocal(e) {    e.preventDefault();    const data = {      type: e.target.elements.type.value,      description: e.target.elements.description.value,      amount: e.target.elements.amount.value     }    this.props.addData(data);  }  render() {    return (      <div>        <form onSubmit={this.addDataLocal}>        <select name="type" id="input-type" name="type">          <option value="income">Income</option>          <option value="expense">Expense</option>        </select>        <input type="text" placeholder="decription..." name="description"/>        <input type="number" placeholder="amount..." name="amount"/>        <input type="submit" value="Add"/>        </form>      </div>    )  }}class IncomeList extends React.Component {  constructor(props) {    super(props);  }  render() {    return (      <div>        {          this.props.income.map((item) => {            return (              <IncomeListItem key={item.amount} item={item}/>            )          })        }      </div>    )  }}