Flutter App Development
Source
We all know that Google launched its own technology 'Flutter' two years ago. And we all are so surprised by its IT industry progress. The software companies have started executing it. We can't stop saying that it will bring a massive evolution in application development.

We can observe that massive changes are going around in the Top Flutter app development company. The process of developing an app has been customized. Previously there was a stability problem in the applications when 'Sky' (the first version of Flutter) was used. But now, the development has been more modernized after the launch of a new and stable performance in 2018.

The exciting fact about Flutter is that you need not code differently for distinct environments. It means you can run a single piece of code in both interfaces, Android OS and iOS. With such bright and powerful features as self-owned quality widgets, an integrated library, and advanced graphics and animations, Flutter is the most advanced technology.
Mobile application-based companies hire flutter app developers to develop progressive UI for their apps. Do you want to be a part of Flutter development too? If yes, then don't wait!
  • Are you excited to learn Flutter? If yes, let us begin with the fundamentals of Flutter.
  • In the upcoming content, you will see how to develop your first application using Flutter.

Begin with Fundamentals

The first discovered version of the Flutter was known as 'Sky.' 'Sky' was the first to run on the Android interface. It was the first ever launched technology in 2015, written to execute 120 frames per second consistently in Dart Developer Summit. After the success of the first version in 2017-18, Google announced Futter version 1.0, calling it a first 'stable' Framework.

The framework architecture of Flutter includes the following:
  • Dart Platform
  • Flutter Engine
  • Foundation Library
  • Design-specific widgets.

Basics you need to know...
  • Programming Language used in Flutter: Dart
  • Platforms on which Flutter runs: Windows, MacOS, LINUX.
  • IDE tool: IntelliJ/ Android Studio
  • Hardware Configuration required: Disk space 400MB (excluding IDE/Tools)
  • Tools: Windows PowerShell 5.0, Git for Windows 2. x

Now that you have understood the basics of Flutter technology. It is time to divert our attention toward steps to develop our Flutter app development.

STEP 1: Install the Flutter on your device

  • Windows MacOS Linux

STEP 2: Install an Editor
  • It is essential to install the text editor properly with our command-line tools. For a better experience, you can use the Flutter text editor. The plug-in packages will provide better code finishing, widgets, compiler, and many other services.
  • IntelliJ/Android studio has different text-editors plug-ins.

STEP 3: Say Hello to start your new app


  • Now that you have completed the initial procedures. Create, run and make changes in your first ever app in Flutter. Create, run, and make changes in your first-ever app in Flutter. Let us create our first new app and experience "hot reload."


STEP 4: "Hello World"- Run your first application




We know every developer is familiar with the object-oriented languages C and C++. Also, the basics of every coding language require loops, conditions, syntax, variables, and logic, to be precise.

1. Let us follow these steps and build our 'Flutter App.'

Create a project and name it 'new_flutter_app.' Edit the lib/main.dart and remove all the dart code. Make sure it should mention "Hello World" in the middle of the screen.
                  
import 'package: flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
 @override
 Widget build(BuildContext context) {
   return MaterialApp(
     title: 'Welcome to Flutter'
     home: Scaffold(
       appear: AppBar(
         title: Text('Welcome to Flutter'),
       ),
       body: Center(
         child: Text('Hello World'),
       ),
     ),
   );
 }
}
(Source: https://flutter.dev/docs/get-started/codelab)




After coding, run the code and solve the errors, if any. It will run differently on Android and iOS.

2. Implement an external package such as the english_words package. This package is a treasure of thousands of words with some utility functions.

Step A

{step1_base → step2_use_package}/pubspec.yaml

@@ -5,4 +5,5 @@


Dependencies:


  Flutter:


    SDK: Flutter


  cupertino_icons: ^0.1.2

+   english_words: ^3.1.0
(Source: https://flutter.dev/docs/get-started/codelab)

Step B

Add packages in the console. Click on Packages to get into the Android Studios Editor View.
  • $ flutter packages get
  • Running "flutter packages get" in startup_namer...
  • Process finished with exit code 0
(Source: https://flutter.dev/docs/get-started/codelab)

Step C

Remember to import the new package from the library lib/main.dart of Flutter.

import 'package: flutter/material.dart';
import 'package:english_words/english_words.dart';
(Source: https://flutter.dev/docs/get-started/codelab)



Once you can access the English words in your program, the code will allow running the strings.

3. You can import the graphics and animation for your application if required. Install the desired widgets.

For example:
Lib/main.dart (RandomWordsState)
class RandomWordsState extends State<RandomWords> {
 // TODO Add build() method
}
(Source:https://flutter.dev/docs/get-started/codelab)

4. Run your app!

Step 4: And you are successful!

Did you just build your own application? If yes! Then congratulations! on creating a new mobile app running on the devices you like.

Are you looking to make some changes to your app? If yes, then you can learn about 'Hot Reload' in our upcoming content.