无法将从Firestore获取的状态数据设置为render()

constructor(props) {
  super(props);
  this.state = {
    firestoreData: null
  };
}

componentDidMount() {
  // 使用Firestore API获取数据
  firestore.collection('yourCollection').get()
    .then(querySnapshot => {
      const data = querySnapshot.docs.map(doc => doc.data());
      this.setState({ firestoreData: data });
    })
    .catch(error => {
      console.error('Error getting Firestore data:', error);
    });
}

render() {
  const { firestoreData } = this.state;

  if (firestoreData === null) {
    return <div>Loading...</div>;
  }

  return (
    <div>
      {/* 使用获取到的Firestore数据进行渲染 */}
    </div>
  );
}