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// showDialog
/*
onPressed: () {
                showDialog(
                  context: context,
                  builder: (context) {
                    return Dialog(
                      child: Text('DIALOG'),
                    );
                  },

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import 'package:flutter/material.dart';
//Flutter Shadow with CustomPainter

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

class MyApp extends StatelessWidget {
  const MyApp({super.key});

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//Button with BoxDecoration

//Button with BoxDecoration

import 'package:flutter/material.dart';

void main() => runApp(const MyApp());

class MyApp extends StatelessWidget {
  const MyApp({super.key});

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// Flutter Animation/Tween (replace Widget) 2

import 'package:flutter/material.dart';

void main() => runApp(TimeSlideApp());

class TimeSlideApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(

rena2019

// Flutter Animation/Tween (replace Widget)

import 'package:flutter/material.dart';
import 'package:intl/intl.dart'; // add intl in pubspec.yaml oder entfernen und eigene Formatierung nutzen

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

class MyApp extends StatelessWidget {

rena2019

// Flutter (broadcast) StreamController

import 'dart:async';

void main() async {
  // Broadcast allows multiple listeners
  final controller = StreamController<int>.broadcast();

  // Listener A
  final subA = controller.stream.listen(

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// Flutter Stream pause, resume, cancel

Stream<String> myStream() async* {
  for (int i = 1; i < 10; i++) {
    await Future.delayed(Duration(seconds: 1));
    yield "VALUE: $i";
  }
}

void main() async {

rena2019

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

//wrapper class for progress + data
class DataWithProgress<T> {
  final T? data;
  final int progress; // 0..100
  final Object? error;
  final bool done;

rena2019

// Add these dependencies to your pubspec.yaml file:
// dependencies:
//   flutter:
//     sdk: flutter
//   flutter_riverpod: ^2.5.1
//   http: ^1.2.1

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

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import 'dart:math';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

// Riverpod AsyncNotifier/AsyncValue (List)

final _rng = Random();

Future<String> fetchItem(int id) async {
  await Future.delayed(Duration(milliseconds: 500 + _rng.nextInt(900)));