无法在导航器的页眉中设置自定义字体样式(React Navigation 4)

import React from 'react';
import { View, Text, StyleSheet } from 'react-native';

const CustomHeader = ({ title }) => {
  return (
    <View style={styles.container}>
      <Text style={styles.title}>{title}</Text>
    </View>
  );
};

const styles = StyleSheet.create({
  container: {
    height: 60,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#f5f5f5',
  },
  title: {
    fontSize: 18,
    fontWeight: 'bold',
    fontFamily: 'YourCustomFont', // 替换为你的自定义字体名称
  },
});

export default CustomHeader;

import React from 'react';
import { createStackNavigator } from 'react-navigation-stack';
import CustomHeader from './CustomHeader';

const AppNavigator = createStackNavigator(
  {
    Home: {
      screen: HomeScreen,
      navigationOptions: {
        header: () => <CustomHeader title="Home" />,
      },
    },
    // 其他屏幕...
  },
  {
    initialRouteName: 'Home',
  }
);

export default AppNavigator;