matrix_flutter_app_v2/lib/view/home.dart

import 'dart:async';

import 'package:flutter/material.dart';

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;
  Timer? timer;

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          toolbarHeight: 35,
          title: Text(widget.title),
          backgroundColor: Theme.of(context).colorScheme.primary,
        ),
        body: Center(
          child: SingleChildScrollView(
            child: Column(
              mainAxisAlignment: MainAxisAlignment.spaceEvenly,
              children: <Widget>[
                const SizedBox(
                  height: 150,
                  child: Text(
                    'You have pushed the button this many times:',
                  ),
                ),
                Text(
                  '$_counter',
                  style: Theme.of(context).textTheme.headlineMedium,
                ),
                TextButton(
                  onPressed: () {
                    Navigator.pushNamed(context,"/media");
                  },
                  child: const Text("to media"),
                ),

                TextButton(
                  onPressed: () {
                    Navigator.pushNamed(context,"/video");
                  },
                  child: const Text("to video"),
                )
              ],
            ),
          ),
        ),
        floatingActionButtonLocation: FloatingActionButtonLocation.centerFloat,
        floatingActionButton: FloatingActionButton(
          tooltip: 'Increment',
          onPressed: () {},
          child: GestureDetector(
            onLongPressStart: (_) {
              timer?.cancel();
              Timer.periodic(const Duration(milliseconds: 10), (timer) {
                this.timer = timer;
                _incrementCounter();
              });
              debugPrint("onLongPressStart");
            },
            onLongPressEnd: (_) {
              timer?.cancel();
              debugPrint("onLongPressEnd");
            },
            onLongPress: () {
              debugPrint("onLongPress");
            },
            onTap: () {
              _incrementCounter();
              debugPrint("onTap");
            },
            child: const Icon(Icons.add),
          ),
        ));
  }
}