Flutter Questions
Warm up for your Flutter Interview with most asked questions and answers for junior, mid, and senior roles.
Junior
What is Flutter?
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Flutter is a framework for building native apps for iOS and Android. It is a toolkit for building beautiful, high-performance, and usable mobile apps.
Junior
What are the advantages of using Flutter?
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Some of the advantages of using Flutter are:
- Dart
- Growing popularity
- High performance
- Mild learning curve
- One UI design
- Money and time economy
- Powerful community
Junior
What is Dart?
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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, paired with a flexible execution runtime platform for app frameworks.
Junior
What is the difference between hot reload, hot restart, and full restart?
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- Hot reload loads code changes into the VM and re-builds the widget tree, preserving the app state; it doesn’t rerun
main()orinitState(). - Hot restart loads code changes into the VM, and restarts the Flutter app, losing the app state.
- Full restart restarts the iOS, Android, or web app. This takes longer because it also recompiles the Java / Kotlin / ObjC / Swift code. On the web, it also restarts the Dart Development Compiler.