Piyé carane navigasi tumrap ing Flutter?

Question

Accepted Answer

**Navigasi** ing Flutter minangka pindah antarane layar (pages/routes) — nggunakake **Navigator** (stack saka routes) kanggo navigasi dasar, utawa pakèt routing deklaratif kanggo aplikasi sing luwih kompleks. Pamahaman navigasi penting banget kanggo mbangun aplikasi multi-layar.

## Navigasi dasar karo Navigator (stack)

```dart
// the Navigator manages a STACK of routes (screens)
// PUSH a new screen onto the stack (navigate to it)
Navigator.push(
  context,
  MaterialPageRoute(builder: (context) => SecondScreen()),
);

// POP — go back (remove the top screen, return to the previous)
Navigator.pop(context);
```

```text
Think of navigation as a STACK of screens:
  → PUSH adds a screen on top (navigate forward)
  → POP removes the top screen (go back)
  → the back button / gesture also pops
```

## Ngirim data antarane layar

```dart
// pass data forward (via the constructor)
Navigator.push(context, MaterialPageRoute(
  builder: (context) => DetailScreen(itemId: 42),
));

// return data back when popping
Navigator.pop(context, result);          // return a result
final result = await Navigator.push(...); // receive it (push returns a Future)
```

## Named routes lan routing modern

```dart
// NAMED routes — define routes by name (cleaner for many screens)
Navigator.pushNamed(context, '/details');
// configured in MaterialApp(routes: {...})

// MODERN: declarative routing packages (go_router) for complex apps:
//   → URL-based routing, deep linking, web support, nested navigation
//   → go_router is the recommended approach for non-trivial apps
```

## Apa iki penting banget

Pamahaman navigasi penting banget amarga **akèh aplikasi sing nduwé macem-macem layar**, lan mindhah antarane layar iku dadi fondasi saka fungsionalitas aplikasi, dadi kuwi kudu ngerti ing Flutter.

Konsep inti — **Navigator Flutter sing ngatur stack saka routes** (layar), ngendi sampeyan **push** kanggo navigasi maju (nambah layar ana sadhuwure) lan **pop** kanggo balik (ngilangi layar sing ana ing ndhuwur) — iku mental model dasar kanggo navigasi, lan metafora stack (sing cocok karo carane pengguna navigasi maju lan balik sajrone aplikasi) dadi intuitif.

Pamahaman **navigasi dasar** (push/pop) perlu kanggo aplikasi multi-layar apa wae.

Pamahaman **ngirim data antarane layar** (ngirim data maju liwat constructors lan kembalian hasil nalika pop, amarga push kembalian Future) penting banget amarga layar biasane kudu tundhon data (ngirim item menyang layar detail, kembalian pilihan).

Pamahaman **named routes** (nentokake routes atas jeneng kanggo organisasi sing luwih resik karo macem-macem layar) lan utamané **routing deklaratif modern** (pakèt kaya **go_router**, sing direkomendasikake kanggo aplikasi sing ora gampang, nyediakake URL-based routing, deep linking, web support, lan nested navigation) nggambarake praktek terbaik saiki — nalika aplikasi berkembang, routing deklaratif ngatur kompleksitas luwih apik tinimbang push/pop imperatif.

Amarga mula-mula kabèh aplikasi nduwé macem-macem layar lan navigasi antarane layar (karo ngirim data) iku dadi fondasi saka fungsionalitas aplikasi, lan amarga pamahaman Navigator stack model, ngirim data, lan routing modern (go_router) perlu kanggo mbangun aplikasi multi-layar, pamahaman navigasi ing Flutter iku penting banget, pengetahuan dasar — kapabilitas inti sing dibutuhake ing mula-mula saben aplikasi Flutter lan perlu kanggo mbangun pengalaman multi-layar sing asli (real applications) nuntut.