如何在组件之外使用setState？

import React, { Component } from 'react';

class MyComponent extends Component {
  state = {
    count: 0
  };

  incrementCount = () => {
    this.setState(prevState => ({
      count: prevState.count + 1
    }));
  };

  render() {
    return (
      <div>
        <p>Count: {this.state.count}</p>
        <button onClick={this.incrementCount}>Increment</button>
      </div>
    );
  }
}

// 在组件之外使用setState
const myComponentRef = React.createRef();

// 更新组件状态
function updateComponentState() {
  if (myComponentRef.current) {
    myComponentRef.current.setState(prevState => ({
      count: prevState.count + 1
    }));
  }
}

// 示例调用
updateComponentState();