如何从react native中的另一个组件触发函数？

// 父组件
import React from 'react';
import ChildComponent from './ChildComponent';

class ParentComponent extends React.Component {
  handleFunction() {
    // 处理函数逻辑
  }

  render() {
    return (
      <ChildComponent onPress={this.handleFunction} />
    );
  }
}

// 子组件
import React from 'react';
import { TouchableOpacity, Text } from 'react-native';

class ChildComponent extends React.Component {
  render() {
    return (
      <TouchableOpacity onPress={this.props.onPress}>
        <Text>触发函数</Text>
      </TouchableOpacity>
    );
  }
}

// 父组件
import React from 'react';
import ChildComponent from './ChildComponent';

class ParentComponent extends React.Component {
  handleFunction() {
    // 处理函数逻辑
  }

  render() {
    return (
      <ChildComponent callback={this.handleFunction} />
    );
  }
}

// 子组件
import React from 'react';
import { TouchableOpacity, Text } from 'react-native';

class ChildComponent extends React.Component {
  handlePress() {
    this.props.callback();
  }

  render() {
    return (
      <TouchableOpacity onPress={this.handlePress.bind(this)}>
        <Text>触发函数</Text>
      </TouchableOpacity>
    );
  }
}

// 创建Context
const MyContext = React.createContext();

// 父组件
import React from 'react';
import ChildComponent from './ChildComponent';

class ParentComponent extends React.Component {
  handleFunction() {
    // 处理函数逻辑
  }

  render() {
    return (
      <MyContext.Provider value={this.handleFunction}>
        <ChildComponent />
      </MyContext.Provider>
    );
  }
}

// 子组件
import React from 'react';
import { TouchableOpacity, Text } from 'react-native';

class ChildComponent extends React.Component {
  render() {
    return (
      <MyContext.Consumer>
        {callback => (
          <TouchableOpacity onPress={callback}>
            <Text>触发函数</Text>
          </TouchableOpacity>
        )}
      </MyContext.Consumer>
    );
  }
}