Explore different ways of converting Flow to SharedFlow and StateFlow using SharedFlow.emit(), StateFlow.value, Flow.ShareIn() and Flow.StateIn() — This is part of the asynchronous flow series: Part 1 — Exploring Android LiveData Usages and Behaviors Part 2 — Introduction to Kotlin Flows and Channels Part 3 — Exploring Different Ways to Collect Kotlin Flow Part 4 — Convert Flow to SharedFlow and StateFlow

Simple app to demonstrate Kotlin flow(), emit(), collectAsState(), collect(), viewModelScope.launch(), launchWhenStarted() and repeatOnLifecycle() — This is part of the asynchronous flow series: Part 1 — Exploring Android LiveData Usages and Behaviors Part 2 — Introduction to Kotlin Flows and Channels Part 3 — Exploring Different Ways to Collect Kotlin Flow Part 4 — Convert Flow to SharedFlow and StateFlow

Step-by-step guide to implement Version Catalog (a dependency management tool developed by Gradle team) into your Android app — Version Catalog is a dependency management tool developed by the Gradle team. The benefit of using it is you don’t need to hard code the version in multiple places, especially if you have a multi-modules project. This article provides a step-by-step guide to integrating Version Catalog into your Android app…

Step-by-step guide to convert or migrate your Android project’s Gradle script from Groovy script to Kotlin script (KTS) — Introduction Gradle is the build automation tool. Android Studio uses Gradle to build the apps. Gradle can be written in these 2 domain-specify languages (DSL): Groovy Script Kotlin Script (KTS) What is Groovy? Groovy is a dynamically typed language, which means the variable types are known at run time. This is usually an interpreter…

Investigating and experimenting various LifecycleCoroutineScope launchWhenX() and repeatOnLifeCycle() function — In the previous article, we learned about LifeCycleCoroutineScope.launch(). However, there are a few additional functions in LifeCycleCoroutineScope: launchWhenCreated() launchWhenStarted() launchWhenResumed() launchWhenX() The code usage looks like this: @Composable fun DemoScreen() { val lifeCycleScope = LocalLifecycleOwner.current.lifecycleScope Button(onClick = { lifeCycleScope.launchWhenStarted { /*...*/ } }) }

Simple app to demonstrate Android Pre-defined Coroutine Scopes Comparisons — when will these Coroutine Scopes be cancelled? — The whole point of having these Android pre-defined coroutine scopes is it automatically cancels all the coroutines that are launched in this scope, so you don’t need to explicitly cancel them. The exception is GlobalScope survives until process death. GlobalScope GlobalScope never gets canceled, even when the activity is destroyed/finished. If…

Simple way to understand “by” operator (used for delegated properties) in Kotlin and the reasons to use it. — When I first learned Kotlin, the by operator is an alien to me. What the hell is that? In this article, I'm going to provide a simple example to show the reasons why we want to use this by operator. Custom Property get() and set() Let’s say I want to create a custom property get()…

Different ways of implementing Kotlin interfaces — using subclass conventional method, object keyword and functional (SAM) interfaces — While experimenting LiveData observer, I encountered the following code and I had no idea how it works. val observer = Observer<T> { state.value = it } So I looked at the Observer source code in Java. It looks like this. public interface Observer<T> { void onChanged(T t); }

You can take screenshot either from the Android Emulator controls menu or Android Studio Logcat menu — I was so stupid, I have been taking screenshot manually (using the Windows Snipping Tool) from Android emulator without knowing there is already “Screen Capture” feature in Android Studio. These are 2 ways to take screenshot from your Android Emulator: Android Emulator Controls Menu Click on the camera icon