在react-native的this.state.places中出现未定义的错误

constructor(props) {
  super(props);
  this.state = {
    places: [] // 初始化places为空数组
  };
}

// 使用箭头函数
handleClick = () => {
  console.log(this.state.places);
}

// 在构造函数中绑定this
constructor(props) {
  super(props);
  this.state = {
    places: []
  };
  this.handleClick = this.handleClick.bind(this);
}

render() {
  return (
    <div>
      {this.state.places.map(place => (
        <div key={place.id}>{place.name}</div>
      ))}
    </div>
  );
}