Questions:
#Q1 What is Flutter?
#Q2 How many types of widgets are there in Flutter?
#Q3 What are the different
BUILD MODES
in Flutter?
#Q4 What is Dart and why does Flutter use it?
#Q5 What is a
"WIDGET"
and mention its importance in Flutter?
#Q6 What is an
APP STATE
#Q7 What is the difference between
"MAIN()" and "RUNAPP()"
functions in Flutter?
#Q8 Differentiate
STATELESS AND STATEFUL?
#Q9 Differentiate between
HOT RESTART AND HOT RELOAD?
#Q10 Differentiate between
REQUIRED AND OPTIONAL
parameters in Dart
#Q11 Explain the different types of
STREAMS?
#Q12 How would you
EXECUTE
code only in debug mode?
#Q13 What are
NULL-AWARE
operators?
#Q14 What are
KEYS
in Flutter and when to use it?
#Q15 What are
PACKAGES AND PLUGINS
in Flutter?
#Q16 What is
SCOPEDMODEL / BLoC Pattern
?
#Q17 What is
STREAMS
in Flutter/Dart?
#Q18 What is
PROFILE MODE
and when do you use it?
#Q19 What is
RELEASE MODE
and when do you use it?
#Q20 Why do we
PASS FUNCTION
to widgets?
#Q21 Explain
ASYNC, AWAIT
in Flutter/Dart?
#Q22 How does Dart
AOT
work?
#Q23 What are the similarities and differences of
FUTURE AND STREAM?
#Q24 What is
FUTURE
in Flutter/Dart?
#Q25 What is a difference between these operators
"?? and ?.
"
#Q26 What is the difference between
double.INFINITY and MEDIAQUERY?
#Q27 Explain
STATEFUL WIDGET
Lifecycle in details
#Q28 LIST some approaches for
STATE MANAGEMENT
in Flutter
#Q29 What is the difference between
DEBUG MODE AND PROFILE MODE?
#Q30 Explain the flutter
ARCHITECTURE
.
#Q31
TESTS
in Flutter .
#Q32 WHAT IS
STATE MANAGEMENT
.
#Q33
PROVIDER
FLUTTER .
#Q34
ISOLATES AND EVENT LOOPS
FLUTTER .
#Q35
WHATS DIFFIREANTIATED BETWEEN EXTENDS AND IMPLEMENTS AND WITH
FLUTTER .
#Q36 WHAT IS FACTORY CONSTRUCTOR .
#Q37 CAN WE DECLARE PRIVATE CONSTRUCTOR IN CLASS .
#Q38 WHY DART USE OBJECT CLASS FOR PARENT .
#Q39 WHY WE NEED FOR MODEL CLASSES.
Q1: What is Flutter?
GET START
Flutter is an open-source UI toolkit from Google for crafting beautiful, natively compiled
applications for desktop, web, and mobile from a single codebase. Flutter apps are built using the Dart
programming language.
Q2: How many types of widgets are there in Flutter?
GET START
Junior
There are two types of widgets: 1. StatelessWidget
: A widget that does not require mutable state. 2.
StatefulWidget: A widget that has mutable state.
Q3: What are the different build modes in Flutter?
GET START
Junior Top 68 Flutter Interview Questions Flutter 68
Answer
The Flutter tooling supports three modes when compiling your app, and a headless mo
de for testing.
You choose a compilation mode depending on where you are in the development cycle.
The modes are: - Debug - Profile - Release
Q4: What is Dart and why does Flutter use it?
GET START
Junior Top 68 Flutter Interview Questions Flutter 68
Answer
Dart is an object-oriented, garbage-collected programming language that you use to develop Flutter apps. It
was also created by Google, but is open-source, and has community inside and outside Google. Dart was
chosen as the language of Flutter for the following reason:
Dart is AOT (Ahead Of Time) compiled to fast, predictable, native code, which allow
s almost all of Flutter to be written in Dart. This not only makes Flutter fast, vi
rtually everything (including all the widgets) can be customized.
Dart can also be JIT (Just In Time) compiled for exceptionally fast development cyc
les and game-changing workflow (including Flutter’s popular sub-second stateful hot
reload).
Dart allows Flutter to avoid the need for a separate declarative layout language li
ke JSX or XML, or separate visual interface builders, because Dart’s declarative, p
rogrammatic layout is easy to read and visualize. And with all the layout in one la
nguage and in one place, it is easy for Flutter to provide advanced tooling that ma
kes layout a snap.
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