Introduction to Kotlin Lambdas: Getting Started

In this tutorial, you will learn how to use lambda expressions and other functional literals provided by Kotlin for the Android platform.

Lambda expression is a simplified representation of a function. It can be passed as a parameter, stored in a variable or even returned as a value.

To practice using lambda expressions, you will build a simple app to save and manage your favorite songs. It will have the functionality to:

• Add songs to a Favorite list.
• Display favorite songs on a list with playlist range.

While doing so, you will explore the following Kotlin topics:

• Lambdas
• Anonymous functions
• Higher-order functions
• Closures

Time to start learning!

Getting Started

Use the Download Materials button at top or bottom of this tutorial to download the starter project.

Once the project is downloaded:

1. Open the starter project in Android Studio 3.3 or above.
2. Press Command + 1 on Mac (or Alt + 1 on Windows) to open the project structure.
3. Open the java and res folders.