What is Ionic Framework?

 IONIC Is An HTML5 Mobile App Development Framework. Targeted At Building Hybrid Mobile Apps. Hybrid Apps Are Those Apps That Has Been Developed Using Web Technology Langauges Such As HTML, CSS And JavaScript. Also Hybrid Apps Have Access To Native Perform Layer. Since Ionic Is An HTML5 Framework, It Needs A Native Wrapper Like Cordova Or PhoneGap In Order To Run As A Native App.

What is Provider and how it works?

 Provider is a simple way for state management, It works on the concept of PUB-SUB, which means there is one provider and multiple subscribers which is called consumer here..

whenever there is change, with notifiyChangeListener it will update all the consumers.

How to access screen size in Flutter?

We can access screen size and other properties like pixel density, aspect ratio etc with help of MediaQuery.

 syntax MediaQuery.of(context).size.width

What is the difference between StateFullWidget and StateLessWidget?

 StateFull widgets holds state of the widget and can be rebuilt when state changes.

Stateless widgets are builds only when it is created or parent changes.

What are the types of widgets in Flutter?

 Mainly, there are two types of widgets,

1.StateFull Widgets 

2.StateLess Widgets

What is flutter

Flutter is cross platform development toolkit by Google. which helps to deploy on multiple platform with single code base and achieve great Ul quickly.