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我在dnd组件的onStop事件里调用setState，但是组件内部并没有根据新的state重新渲染

import React, { Component } from 'react';
import { Dnd } from 'tinper-bee';

class Demo extends Component {
constructor(props) {
super(props);
this.state = {
list: [ 1, 2, 3 ]
};
}

render() {
	return (
		<div style={{ width: '480px' }}>
			<Dnd list={this.state.list} />
			<button
				onClick={() => {
					this.setState({
						list: [ 1, 2, 3, 4 ]
					});
				}}
			>
				click me
			</button>
		</div>
	);
}

}

export default Demo;