Easy Steps: Flutter

How to install Flutter in VsCode and run Android Emulator

Course Syllabus

Adding Animations
Responsive and Adaptive User Interface and Apps
Navigations and Muitleple Screens
User Input and Forms
State Management(BLOC)
Http (Request, Response)
Adding Authentications
Using Device Features(Camera, maps, Locations)
Firebase, Image Upload, Push Notifications
Publishing to the App Store

Dart Flutter MaterialApp / Scaffold

      debugShowCheckedModeBanner: false,

accentColor: Colors.indigoAccent

When the page is scrolling,
ie accentColor

return Scaffold(
  resizeToAvoidBottomPadding: false,

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Step : #1 [ Basic Search ]

visit the link - https://flutter.dev/

and Click the Get started button

Step : #2 [ Install ]

https://flutter.dev/docs/get-started/install

Click Get Start to start downloading Fluttter SDK

Step : #1

Vysor Extension for chorme, it help full to connect real device

# If necessary, you can check your current Flutter version with the command:
flutter --version

Creating a New Flutter Project

# New Flutter application
flutter create flutter_http

# Open this up inside of VS Code
cd flutter_http && code .

pub publish --dry-run

flutter pub get

flutter doctor --android-licenses

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Flutter : #1 [Example of Hello world ]

import 'package:flutter/material.dart';
void main(){
  runApp(myApp());
}

class myApp extends StatelessWidget{
  @override  Widget build(BuildContext context){
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Hello World'),
          backgroundColor: Colors.pinkAccent,
          centerTitle: true,
        ),
        body: Center(
            child:Text('Body part',
              style: TextStyle(
                  color: Colors.pink, fontSize: 30              ),
        ),

        ),
backgroundColor: Colors.white,
      ),
    );
  }
}

Happy Coding :)

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Flutter : #1.1 [Example of StatelessWidget and StatefulWidget ]

import 'package:flutter/material.dart';
void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);
  final String title;

  @override  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;
  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }
  @override  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.headline4,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: Icon(Icons.add),
      ), // This trailing comma makes auto-formatting nicer for build methods.    );
  }
}

Happy coding :)

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Flutter : #1.2 [Example of AppBar  ]
import 'package:flutter/material.dart';

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

class MyHello extends StatelessWidget {
  @override  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Home',
      theme: ThemeData(
          primarySwatch: Colors.red,
          accentColor: Colors.red,
          appBarTheme: AppBarTheme(color: Colors.red)),
      home: Myhome(),
    );
  }
}

class Myhome extends StatefulWidget {
  @override  _MyhomeState createState() => _MyhomeState();
}

class _MyhomeState extends State<Myhome> {
  @override  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        
        leading: IconButton(
          
          onPressed: (){},
          icon: Icon(Icons.menu)
        ),
        
        actions: <Widget>[
          InkWell(
            child: IconButton(
              padding: const EdgeInsets.only(right: 20),
              icon: Icon(Icons.access_alarms, 
              
              ),
              ),
          ),
          IconButton(
            onPressed: (){},
            padding: const EdgeInsets.only(right: 10),
            icon: Icon(Icons.search),
            )
        ],
        
        title: Text('Welcome Page'),
        titleSpacing: 40,
        centerTitle: true,
      ),
    );
  }
}







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Flutter : #1.3 [Example of AppBar  ]
import 'package:flutter/material.dart';
void main()=>runApp(MyApp());class MyApp extends StatefulWidget{
  @override  _MyAppState createState()=>_MyAppState();
}class _MyAppState extends State<MyApp>{
  @override  Widget build(BuildContext context){    return MaterialApp(      title: 'Home',
      theme: ThemeData(
        primaryColor: Colors.purple[900]
      ),      home: Scaffold(        appBar: AppBar(
          title: Text('Firebase connection Demo'),
          centerTitle: true,
        ),
      ),

    );
  }
}

Single Images

All Images

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override  Widget build(BuildContext context){
    return Container(
      decoration: BoxDecoration(
        color: Colors.purple      ),
      child: Center(
        child: Image.asset('assets/images/images.jpg',

        //child: Image.asset('images/images.jpg',
fit: BoxFit.cover,
          width: 100.0,
          height: 100.0,
        ),
      ),
    );
  }
}

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(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Hello world'),
        ),
        body: Center(
          child: FlatButton(
            padding: EdgeInsets.symmetric(vertical: 30.0, horizontal: 90.0),
            color: Colors.purple,
            textColor: Colors.black,
            splashColor: Colors.cyan,

            //highlightColor: Colors.amber,            onPressed: (){}, // Anonymous function            child: Text('FlatButton',
            style: TextStyle(
             // color: Colors.white,              fontSize: 24.0            ),
            ),
          ),
        ),
      ),

    );

  }
}

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget{
  @override  Widget build(BuildContext context){
    return MaterialApp(
      home: Scaffold(
        appBar:AppBar(
          title: Text('Home')
        ),
        body: Center(
          child: RaisedButton(
            color: Colors.white,
            textColor: Colors.black,
            splashColor: Colors.cyan,
            padding: EdgeInsets.symmetric(vertical: 30.0, horizontal: 30.0),
            elevation: 10.0,
            highlightElevation: 30.0,
            shape: Border.all(width: 2.0, color: Colors.black),
            onPressed: (){},
            child: Text('RaiseButton',
              style: TextStyle(
                color: Colors.red,
                fontSize: 24.0              ),
            ),
          ),
        ),
      )

    );
  }
}

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget{
  @override  Widget build(BuildContext context){
    return MaterialApp(
      home:Scaffold(
        appBar: AppBar(
          title: Icon(Icons.accessible_forward),

        ),
        floatingActionButton: FloatingActionButton(
          onPressed: (){},
          child: Icon(Icons.add          ),
          foregroundColor: Colors.pink,
          backgroundColor: Colors.green,
          shape: RoundedRectangleBorder(),
        ),
        body: Center(
          child: RaisedButton(
            child: Icon(
              Icons.add            ),

          ),

        ),
      ),
    );
  }
}

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Flutter : #6 [Example of Hello world ]

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Flutter : #7 [Textfield ]

import 'package:flutter/material.dart';

void main()=>runApp(MyApp());
class MyApp extends StatelessWidget{
  @override  Widget build(BuildContext context){
    return MaterialApp(
      title: 'Text Fields',
      theme: ThemeData(
        primaryColor: Colors.lightBlueAccent      ),
      home: MyHomePage(),
    );
  }
}
class MyHomePage extends StatefulWidget{
  @override  _MyHomePageState createState()=>_MyHomePageState();
  }
class _MyHomePageState extends State<MyHomePage>{
@override  Widget build (BuildContext context){
  return Scaffold(
    body: Column(
      mainAxisAlignment: MainAxisAlignment.center,
      children: <Widget>[
        Padding(
          padding: const EdgeInsets.all(18.0),
          child: TextField(
            decoration: InputDecoration(
              //hintText: 'username',              prefix: Icon(Icons.account_circle),
              helperText: 'please enter username',
              labelText:'Username',
              border: OutlineInputBorder(),
            ),
            maxLength: 20,
            style: TextStyle(
              color: Colors.red,
              fontSize: 25.0,
            ),
          ),
        ),

      ],
    ),

  );
}
}

Flutter : #9 [Example of Hello world ]

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Flutter : #10 [Example of Hello world ]

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Flutter : #2 [Example of Hello world ]

import 'package:flutter/material.dart';
import 'dart:async';
import 'dart:convert';
import 'package:http/http.dart' as http;

void main()=>{
  runApp(MaterialApp(
  title:'Android App',
    home: MyApp(todos:getData())
))
};
Future<Todos>getData() async {
  final response = await http.get('https://jsonplaceholder.typicode.com/todos/1');
  if (response.statusCode == 200) {
    return Todos.fromJson(json.decode(response.body));
  }
  else {
    throw Exception('No response from server');
  }
}

class Todos {
  final int user;
  final int id;
  final String title;
  final bool completed;
  Todos({this.user, this.id,this.title, this.completed });
  factory Todos.fromJson(Map<String, dynamic> json) {
    return Todos(
        user:json['userId'],
      id:json['id'],
      title:json['title'],
      completed:json['completed']
    );
  }
}
class MyApp extends StatelessWidget {
  Future<Todos>todos;
  MyApp({Key key, this.todos}): super(key:key);
  @override  Widget build(BuildContext context){
    return Scaffold(
      body: Center(
        child: FutureBuilder<Todos>(
            future: todos,
            builder: (context,snapshot){
              if(snapshot.hasData){
                return Text(snapshot.data.title);
              }
              return CircularProgressIndicator();
            }
        ),
      )
    );
  }

}

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
import 'dart:async';
import 'dart:convert';

void main()=>{
 runApp(MaterialApp(
   title: 'Home',

   theme: ThemeData(
     primarySwatch: Colors.red   ),
   home: MyRestApi(),

 ))
};
class MyRestApi extends StatefulWidget{
  @override  _MyRestApiState createState()=> _MyRestApiState();
}

class _MyRestApiState extends State<MyRestApi>{
  Map data;
  List userData;

  Future getData() async {
    final response = await http.get('https://reqres.in/api/users?page=2');
    data=json.decode(response.body);
    setState(() {
      userData=data["data"];
    });
    debugPrint(userData.toString());
  }
  @override  void initState(){
    super.initState();
    getData();
  }
  @overrideWidget build(BuildContext context){
    return Scaffold(
        appBar:AppBar(
          centerTitle: true,
          title: Text('How to call FAKE API'),
        ),
      body:ListView.builder(
        itemCount: userData == null ? 0 : userData.length,
          itemBuilder: (BuildContext context, int index){
          return Card(
            child: Row(
              children: <Widget>[
                CircleAvatar(
                  backgroundImage: NetworkImage(userData[index]["avatar"]),
                ),
                Text("${userData[index]["first_name"]} ${userData[index]["last_name"]}" ,
                style: TextStyle(
                  fontSize: 20,
                ),
                )
              ],
            ),
          );
        }
      ) ,
    );
  }
}

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

void main() => runApp(MyApp());
class MyApp extends StatefulWidget {
  @override  _MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
  @override  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Maps Sample App'),
          backgroundColor: Colors.green[700],
        ),
        body: GoogleMap( initialCameraPosition: CameraPosition(
          target: LatLng(37.77483, -122.41942),
          zoom: 12           ),
          ),
        ),
    );
  }
}

import 'package:flutter/material.dart';
void main()=> runApp(MyApp());
class MyApp extends StatelessWidget{
  @override  Widget build(BuildContext context){
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'Home',
      theme: ThemeData(
        backgroundColor: Colors.red,
        accentColor: Colors.yellowAccent,
        primarySwatch: Colors.green,          appBarTheme: AppBarTheme(color:Colors.white, elevation: 5),      ),
      home: MyHome(),
    );
  }
}class MyHome extends StatefulWidget{
  MyHome({Key key, this.title}):super(key:key);
  final String title;
  @override  _MyHomeState createState()=> _MyHomeState();
}class _MyHomeState extends State<MyHome>{
  @override  Widget build(BuildContext context){
    return Scaffold(
      appBar: AppBar(
        centerTitle: true,
        title: Text('Grid View', style: TextStyle(color: Colors.green),),
      ),
      body: GridView.count(
          crossAxisCount: 2,
        children: <Widget>[
          Center(
            child:Text('Hello World'),
          ),
          Center(
            child:Text('Hello World'),
          ),Center(
            child:Text('Hello World'),
          ),Center(
            child:Text('Hello World'),
          ),Center(
            child:Text('Hello World'),
          ),Center(
            child:Text('Hello World'),
          ),Center(
            child:Text('Hello World'),
          ),Center(
            child:Text('Hello World'),
          ),

        ],

      ),
    );
  }
}

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Flutter : #2 [Example of Hello world ]

Easy Steps

Tuesday, February 5, 2019

Flutter

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