Android Basics

Kotlin fundamentals Write conditionals in Kotlin when statement when (parameter) { condition1 -> body1 condition2 -> body2 condition3 -> body3 ... } # Example: when (x) { 2, 3, 5, 7 -> println("x is a prime number between 1 and 10.

Architecture Components 2 - Stages of the Activity lifecycle Activity lifecycle Activity -> entry point for interacting with the user (like the main function is the entry point of a programm in cpp) 1 activity -> multiple screens Activity lifecycle: onCreate(): One-time initializations (like setContent, which specifies activity’s UI layout).

Get Data from the Internet Introduction to Coroutines in Kotlin playground Concurrency: performing multiple tasks in your app at the same time. Example: get data from a server or save user data on the device, while responding to user input events and updating the UI accordingly.

Use Room for data persistance Video - Kotlin Flows in Practice Why should we use Flows? Requesting data every time we need it is not so good because we are not sure whether we have new data that we did not fetch or not.