Building a live wallpaper is one of the best ways to learn Android’s rendering pipeline — and one of its harshest teachers of battery discipline. When your app draws on the home screen all day, every wasted frame eventually shows up in someone’s battery stats. Over the years building Seasons Live Wallpaper, I’ve learned that […]
One of the most satisfying things to code is a particle system. Snowflakes, falling leaves, fireflies — simple physics, beautiful results. Here’s how Seasons Live Wallpaper handles its snow, and how you can build something similar. The Particle Data Class data class Snowflake( var x: Float, var y: Float, val radius: Float, // visual size
Recently I had to change the target SDK on one of my applications, but by doing that, I ran into some problems with the Android Canvas. In this application I use an animation which simulates an explosion. So, I tested my app and I noticed that everything was working OK, until I changed the target
