Sometimes, we want our app to perform some background tasks under certain conditions, such as Battery level or network etc. With Worker and Constraints, we can conveniently achieve that. The example problem A worker class that prints a message to the console. class MyWorker(context: Context, params: WorkerParameters): Worker(context,params) { override fun doWork(): Result { Log.i(LOG_TAG...
Room provides an abstraction layer over SQLite to allow fluent database access while harnessing the full power of SQLite. Because Room takes care of several concerns for you, e.g. caching, networking, Android highly recommend using Room instead of SQLite. If you are coming from iOS, the good news is that Room is very similar to the core data in iOS development. The task Field...
Multi-touch gestures are very useful in many common scenarios, such as zooming, panning. For game development, handling multi-touch is essential. This post will give a quick guide for handling multi-touch points. Project structure We create a new project name MultiTouch with Java and add a new class named GameScene as a subclass of android.view.View. The basic GameScene class is as follows...
Following up the article “RE-DEV THE FIRST VIDEO GAME PONG WITH SURFACEVIEW AND GAMELOOP”, here is the video tutorial for another version of the Ping game. What is new? Improve the GUIBetter collision handling Challenges The source code for the project is not fully provided but you can always get the code from the video. So want to release your first game on Play/App Store? Watch the...
Pong game (prototype) In this article, we recreate the two-player game Pong – the first arcade video game 1972 – for Android using Kotlin. We will implement the game SurfaceView, game loop design pattern, and code optimization for better performance. Game loop Game loop is a common design pattern in game development. It is already integrated into different game engines. Nevertheless...