- OCTOPUS ANDROID DEVELOPER WHAT CAN YOU DO HOW TO
- OCTOPUS ANDROID DEVELOPER WHAT CAN YOU DO FOR ANDROID
- OCTOPUS ANDROID DEVELOPER WHAT CAN YOU DO CODE
- OCTOPUS ANDROID DEVELOPER WHAT CAN YOU DO PLUS
- OCTOPUS ANDROID DEVELOPER WHAT CAN YOU DO DOWNLOAD
In Android Studio, open CartoonAvatarAdapter.kt. Now that you know enums are good, it’s time to define them. The Android documentation has more details about this in the Shrink, obfuscate, and optimize your app guide.
OCTOPUS ANDROID DEVELOPER WHAT CAN YOU DO CODE
Among its many other features, R8 helps remove the overhead from enums whenever possible by understanding how your code uses them. Without diving too deep into this, R8 is a compiler that cleans and optimizes your code when building your app.
OCTOPUS ANDROID DEVELOPER WHAT CAN YOU DO FOR ANDROID
The question of whether enums are bad for memory management emerged a long time ago, way before Google announced that Kotlin was its preferred language for Android app developers. It’s also better for performance, as you won’t have to compare String values, for instance. You can’t define enum cases at runtime, and there’s no reason to: It would defeat their purpose of holding a predefined set of values. That same characteristic makes enums unsuitable for variable or dynamic sets of data. You can’t reference an app mode called COLORFUL when the only options are LIGHT and DARK. By using them, your code has compile-time checks that prevent the developer from using an undefined case.
When you have a well-defined realm of possibilities, enums are a great candidate. No other cases are possible - those are the only possible modes. In a case like this, you define an enum with two predefined cases: LIGHT and DARK. An example is an app that supports light and dark modes. When you’re modeling your app’s data, some concepts will have a limited set of possibilities. In short, Kotlin enums are a way to describe a set of predefined constants in your code. Next, you’ll make it come to life - and learn about Kotlin enums in the process! But first, an introduction to enums. You’ll see a screen that says “Enter your details to continue”: Find them in res/values/strings.xml.īuild and run the project. Note: For more details about RecyclerView, read our Android RecyclerView Tutorial.Īdditionally, some strings you’ll use in this tutorial are already conveniently included for you. You’ll use this method in AvatarSelectedActivity to display the user’s initial.
OCTOPUS ANDROID DEVELOPER WHAT CAN YOU DO DOWNLOAD
Ready to learn more? Then read on! Getting Startedĭownload the starter project by clicking the Download Materials button at the top or bottom of the tutorial.
OCTOPUS ANDROID DEVELOPER WHAT CAN YOU DO HOW TO
OCTOPUS ANDROID DEVELOPER WHAT CAN YOU DO PLUS
In this tutorial, you’ll learn what that means, plus what enums are capable of in Kotlin. They are, in their most basic form, collections of predefined constant elements. Kotlin enums are a crucial part of the language.