app_bar_with_search_switch 1.8.5

An extension for AppBar which can switch it into search field.

example/lib/main.dart

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

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'AppBarWithSearch demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'AppBarWithSearch widget main'),
    );
  }
}

class MyHomePage extends StatelessWidget {
  MyHomePage({Key? key, required this.title}) : super(key: key);

  final String title;
  final searchText = ValueNotifier<String>('');
  final words = ("There is no justice in the laws of nature, no term for fairness in the equations of motion. "
          "The Universe is neither evil, nor good, it simply does not care. "
          "The stars don't care, or the Sun, or the sky. "
          "But they don't have to! WE care! There IS light in the world, and it is US! "
          "Why does any kind of cynicism appeal to people? Because it seems like a mark of maturity, of sophistication, like you’ve seen everything and know better. "
          "Or because putting something down feels like pushing yourself up. "
          "There is light in the world, and it is us! "
          "World domination is such an ugly phrase. I prefer to call it world optimisation. ")
      .split(' ');

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      //
      // *** The Widget AppBarWithSearchSwitch
      //
      appBar: AppBarWithSearchSwitch(
        onChanged: (text) {
          searchText.value = text;
        },
        // onSubmitted: (text) {
        //   searchText.value = text;
        // },
        animation: AppBarAnimationSlideLeft.call,
        // animation: (child) => AppBarAnimationSlideLeft(
        //     milliseconds: 400, withFade: false, percents: 0.25, child: child),
        appBarBuilder: (context) {
          return AppBar(
            title: Text(title),
            actions: const [
              // AppBarSpeechButton(),  // in version 2.0+
              AppBarSearchButton(),
              // or
              // IconButton(onPressed: AppBarWithSearchSwitch.of(context)?startSearch, icon: Icon(Icons.search)),
            ],
          );
        },
      ),
      //
      // > Just some random code to react to input from AppBarWithSearchSwitch.
      //
      body: Center(
        child: SingleChildScrollView(
          child: AnimatedBuilder(
            animation: Listenable.merge([
              searchText,
            ]),
            builder: (BuildContext context, _) {
              return Wrap(
                children: [
                  for (var i = 0; i < words.length; i++)
                    if (words[i].contains(searchText.value))
                      SizedBox(
                        height: 110,
                        width: 110,
                        child: Card(
                          child: Column(
                            children: [
                              Expanded(
                                child: Center(
                                  child: Text(
                                    words[i],
                                    style: Theme.of(context)
                                        .textTheme
                                        .headlineSmall,
                                    textAlign: TextAlign.center,
                                  ),
                                ),
                              ),
                            ],
                          ),
                        ),
                      ),
                ],
              );
            },
          ),
        ),
      ),
    );
  }
}