Flutter Interview Questions and Answers

Question 1

Given the following class:

class Recipe {
  int cows;
  int trampolines;

  Recipe(this.cows, this.trampolines);
  
  int makeMilkshake() {
    return cows + trampolines;
  }
}

Convert makeMilkshake() to a getter called milkshake using the shorthand “fat arrow” syntax.

Question 2

Given the following widget:

class MyWidget extends StatelessWidget {
  final personNextToMe = 'That reminds me about the time when I was ten and our neighbor, her name was Mrs. Mable, and she said...';

  @override
  Widget build(BuildContext context) {
    return Row(children: [
      Icon(Icons.airline_seat_legroom_reduced),
      Text(personNextToMe),
      Icon(Icons.airline_seat_legroom_reduced),
    ]);
  }
}

There is a text overflow on some narrow devices:

How would you fix this?

Question 3

Refactor the code below so that the children of Row will wrap to the next line when the display width is too narrow for them to fit.

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Row(children: [
      Chip(label: Text('I')),
      Chip(label: Text('really')),
      Chip(label: Text('really')),
      Chip(label: Text('really')),
      Chip(label: Text('really')),
      Chip(label: Text('really')),
      Chip(label: Text('really')),
      Chip(label: Text('need')),
      Chip(label: Text('a')),
      Chip(label: Text('job')),
    ]);
  }
}

Question 4

You’ve declared list1 with var, list2 with final and list3 with const. What’s the difference between these keywords? Will the last two lines compile?

var list1 = ['I', '