Flutter for Beginners

Importing and using a library

In Chapter 1, An Introduction to Dart, in the Functions section, we imported the meta library to use the @required annotation on some parameters. Now, let's explore the import statement in more detail.

To define a library, we simply create a Dart file with some code in it.

Take a look at the example_1_importing example for a clearer visualization of the libraries and import statements. You can find the source code of this chapter on GitHub.

In this example, we defined a simple library with the Person, Student, and Employee classes alongside the PersonType enum:

// person_lib library - the Classes contents were truncated for brevity class Person {  String firstName;  String lastName;  PersonType type; Person([this.firstName, ...