prism_adaptive_scaffold

A responsive adaptive scaffold for Flutter — the maintained replacement for the discontinued flutter_adaptive_scaffold. One widget, three layouts: bottom navigation bar on phones, a navigation rail on tablets, and an extended rail with labels on desktop. Pure Flutter — no platform channels.

Features

• ✅ Material 3 adaptive navigation: bottom bar → rail → extended rail
• ✅ Canonical M3 breakpoints (compact / medium / expanded / extra-large)
• ✅ Animated body transitions between destinations
• ✅ Drop-in API: pass destinations + a body builder, done
• ✅ Works on all six Flutter platforms: Android, iOS, macOS, Windows, Linux, Web

Installation

dependencies:
  prism_adaptive_scaffold: ^0.1.0

Usage

import 'package:flutter/material.dart';
import 'package:prism_adaptive_scaffold/prism_adaptive_scaffold.dart';

PrismAdaptiveScaffold(
  destinations: const [
    AdaptiveDestination(icon: Icons.inbox_outlined, label: 'Inbox'),
    AdaptiveDestination(icon: Icons.send_outlined, label: 'Sent'),
  ],
  currentIndex: _index,
  onDestinationSelected: (i) => setState(() => _index = i),
  bodyBuilder: (index) => Center(child: Text('Page $index')),
)

Resize the window (or run on desktop) and watch the navigation adapt.

Custom breakpoints

Pass your own thresholds to PrismBreakpoint.resolve, or compare directly:

final bp = PrismBreakpoint.resolve(MediaQuery.sizeOf(context).width);
if (bp == PrismBreakpoint.expanded) {
  // Show a two-pane layout.
}

License

MIT — see LICENSE.