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Flutter for Beginners

You're reading from   Flutter for Beginners An introductory guide to building cross-platform mobile applications with Flutter and Dart 2

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Product type Paperback
Published in Sep 2019
Publisher Packt
ISBN-13 9781788996082
Length 512 pages
Edition 1st Edition
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Author (1):
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Alessandro Biessek Alessandro Biessek
Author Profile Icon Alessandro Biessek
Alessandro Biessek
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Table of Contents (21) Chapters Close

Preface 1. Section 1: Introduction to Dart
2. An Introduction to Dart FREE CHAPTER 3. Intermediate Dart Programming 4. An Introduction to Flutter 5. Section 2: The Flutter User Interface - Everything is a Widget
6. Widgets: Building Layouts in Flutter 7. Handling User Input and Gestures 8. Theming and Styling 9. Routing: Navigating between Screens 10. Section 3: Developing Fully Featured Apps
11. Firebase Plugins 12. Developing Your Own Flutter Plugin 13. Accessing Device Features from the Flutter App 14. Platform Views and Map Integration 15. Section 4: Advanced Flutter - Resources to Complex Apps
16. Testing, Debugging, and Deployment 17. Improving User Experience 18. Widget Graphic Manipulations 19. Animations 20. Other Books You May Enjoy

Dart classes and constructors

Dart classes are declared by using the class keyword, followed by the class name, ancestor classes, and implemented interfaces. Then, the class body is enclosed by a pair of curly braces, where you can add class members, that include the following:

  • Fields: These are variables used to define the data an object can hold.
  • Accessors: Getters and setters, as the name suggests, are used to access the fields of a class, where get is used to retrieve a value, and the set accessor is used to modify the corresponding value.
  • Constructor: This is the creator method of a class where the object instance fields are initialized.
  • Methods: The behavior of an object is defined by the actions it can take. These are the object functions.

Refer to the following small class definition example:

class Person {
String firstName;
String lastName;

String getFullName...
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