roipeker

//////////////////////////////
//
// 2019, roipeker.com
// screencast - demo simple image:
// https://youtu.be/EJyRH4_pY8I
//
// screencast - demo snapshot:
// https://youtu.be/-LxPcL7T61E
//
//////////////////////////////

roipeker

import 'package:flutter/material.dart';

class CardOptionItem {
  final String title;
  bool selected;
  CardOptionItem({this.title, this.selected: false});
}

class CardModel {
  String title;

roipeker

Flutter

A quick cheatsheet of useful snippet for Flutter

Widget

A widget is the basic type of controller in Flutter Material. There are two type of basic Widget we can extend our classes: StatefulWidget or StatelessWidget.

Stateful

StatefulWidget are all the widget that interally have a dynamic value that can change during usage. It can receive an input value in the constructor or reference to functions. You need to create two classes like:

roipeker

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

class CameraFrameTest extends StatefulWidget {
  @override
  _CameraFrameTestState createState() => _CameraFrameTestState();
}

class _CameraFrameTestState extends State<CameraFrameTest> {
  CameraDescription firstCamera;

roipeker

import 'package:flutter/material.dart';

class TestPage extends StatefulWidget {
  @override
  _TestPageState createState() => _TestPageState();
}

class _TestPageState extends State<TestPage> {
  @override
  Widget build(BuildContext context) {

roipeker

import 'package:flutter_web/material.dart';
import 'package:flutter_web_test/flutter_web_test.dart';
import 'package:flutter_web_ui/ui.dart' as ui;

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: MyHome(),
      );

roipeker

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

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      routes: {

roipeker

void main() {
  const Map<String, dynamic> a = {
    'value': 1,
    'test': {
      'asd': 'asd',
    }
  };
  var b = a.clone(unmodifiable: false);
  var c = a.clone(unmodifiable: true);
  

roipeker

import 'dart:ui';

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override

roipeker

 final list = [
    Message(0), Message(0), Message(0),
    Message(1), Message(1),
    Message(0),
    Message(2), Message(2), Message(2),
    Message(0),
    Message(3), Message(3),
    Message(1), Message(1),
    Message(4),
    Message(0)