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

export default function Layout() {
  return (
    <Stack>
      <Stack.Screen name="index" options={{ title: "Home" }} />
      <Stack.Screen name="post/[id]" options={{ title: "Post" }} />
    </Stack>
  );
}

// app/index.tsx
import { Link } from "expo-router";
import { Text, View } from "react-native";

export default function Home() {
  return (
    <View>
      <Link href="/post/42">Open post</Link>
    </View>
  );
}

// app/post/[id].tsx
import { useLocalSearchParams, router } from "expo-router";
import { Pressable, Text } from "react-native";

export default function Post() {
  const { id } = useLocalSearchParams<{ id: string }>();
  return (
    <>
      <Text>Post {id}</Text>
      <Pressable onPress={() => router.back()}>
        <Text>Back</Text>
      </Pressable>
    </>
  );
}