// app/_layout.tsx
import { Stack } from 'expo-router';

export default function RootLayout() {
  return (
    <Stack screenOptions={{ headerShown: false }} />
  );
}

// app/lesson/[id].tsx
import { Stack } from 'expo-router';

export default function LessonScreen() {
  return (
    <View>
      <Stack.Screen
        options={{
          title: 'Lesson',
          headerShown: true,
          headerBackTitle: 'Back',
        }}
      />
      {/* Screen content */}
    </View>
  );
}

import { useNavigation } from 'expo-router';
import { useLayoutEffect } from 'react';

export default function Screen() {
  const navigation = useNavigation();

  useLayoutEffect(() => {
    navigation.setOptions({
      headerRight: () => (
        <Pressable onPress={handlePress}>
          <Ionicons name="add" size={28} />
        </Pressable>
      ),
    });
  }, [navigation]);

  return <View>{/* content */}</View>;
}

// app/(tabs)/_layout.tsx
import { Icon, Label, NativeTabs } from 'expo-router/unstable-native-tabs';

export default function TabLayout() {
  return (
    <NativeTabs>
      <NativeTabs.Trigger name="index" options={{ title: 'Home' }}>
        <Icon sf="house.fill" drawable="custom_android_drawable" />
        <Label>Home</Label>
      </NativeTabs.Trigger>
    </NativeTabs>
  );
}