Flutter developer

1)What is Flutter?
Flutter is an open-source framework by Google for building beautiful, natively compiled, multi-platform applications from a single codebase.
Flutter is not a language; it is an SDK. Flutter apps use the Dart programming language for creating an app. The first alpha version of Flutter was released in May 2017.

2) What is Dart?
It is open-source and developed by Google in 2011. The purpose of Dart programming is to create frontend user interfaces for the web and mobile apps.
Dart is a client-optimized language for developing fast apps on any platform. Its goal is to offer the most productive programming language for multi-platform development.

3)What are the Flutter widgets?
Flutter widgets are built using a modern framework that takes inspiration from React. The central idea is that you build your UI out of widgets. Widgets describe what their view should look like given their current configuration and state. When a widget’s state changes, the widget rebuilds its description, which the framework diffs against the previous description to determine the minimal changes needed in the underlying render tree to transition from one state to the next.

4) What is the Difference Between Stateless and Stateful Widget in Flutter?

A stateless widget is useful when the part of the user interface you are describing does not depend on anything other than the configuration information and the BuildContext whereas a Stateful widget is useful when the part of the user interface you are describing can change dynamically.

A Stateful Widget is a mutable widget that is the reason it can be drawn multiple times within its lifetime.
It is referred to as dynamic because it can change the inner data during the widget's lifetime. A widget that allows us to refresh the screen is called a Stateful widget. This widget does not have a build() method. It has the createState() method, which returns a class that extends the Flutters State Class. The examples of the Stateful widget are Checkbox, Radio, Slider, InkWell, Form, and TextField.

A Stateless widget will never rebuild by itself but can from external events.
The Stateless widget does not have any state information. It remains static throughout its lifecycle. Examples of the Stateless widget are Text, Row, Column, Container, etc. If the screen or widget contains static content, it should be a Stateless widget, but if you want to change the content, it needs to be a Stateful widget.

5) What is StatefulWidget LifeCycle?

The lifecycle has the following simplified steps:

createState(): When we build a new StatefulWidget, this one calls createState() right away and this override method must exist.
initState(): It is the first method called after the Widget is created.This is our equivalent to onCreate() and viewDidLoad()
didChangeDependencies() : This method is called immediately after initState() on the first time the widget is built.
build() : This is called right after didChangeDependencies(). All the GUI is rendered here and will be called every single time the UI needs to be rendered.
didUpdateWidget(): It’ll be called once the parent Widget did a change and needs to redraw the UI.
deactivate(): Framework calls this method whenever it removes this State object from the tree
dispose(): It is called when this object and its State are removed from the tree permanently and will never build again.

Hive database in flutter

8 way to build flutter app

🤔🤔