Make your own checkerboard background Full code here (at the end) Checkerboard backgrounds are often used to help us detect transparent parts of a picture. The convention is that the checkerboard is in the background, so any place where the checkerboard shows through in an image, that zone is actually transparent (more or less so). […]
Compose Code Tool: A Checkerboard Modifier Lire la suite »
What do you need to do to simply maintain an Android application in regard to Android SDK and dependencies? Even for commercially-maintained applications, it is not always clear how to perform basic maintenance outside of bug fixes and new features. Like any code ecosystem, the Android world is constantly evolving: security vulnerabilities are discovered and
A checklist for updating your low-maintenance Android apps Lire la suite »
From now on, you can replace the phrase “calling a Kotlin suspend function” with “using the Stollenloch door”. This article is about how the Kotlin suspend keyword hides special gear that ensures Kotlin coroutines can provide structured concurrency. Introduction: imagine the Bernese Alps Bear with me, here are some pictures to distract u make it easier.
How to export a Composable as an image? When searching for ways to export something drawn by a Composable on screen, the answer often proposed is to fall back on the underlying ComposeView object and use the pre-existing View.draw(Canvas) method. This works just fine for a lot of cases, but unfortunately for me, it does
Exporting a Composable as an image (in an Android app) Lire la suite »
How do you draw an arc in Android Graphics? This article provides a quick visual sampler of arcs drawn with varying parameter values. After reading this, you will be able to use drawArc, arcTo, sweepAngle, and startAngle confidently. Android Graphics offers very convenient methods for drawing arcs. It allows you to define an arc with
Android Graphics arcs visual sampler Lire la suite »
How to use a third-party plugin in your Kotlin DSL build for an Android application when the plugin is not hosted in a standard repository
Using a non-standard plugin in your Android project Kotlin DSL build Lire la suite »
This post is a basic set up for using Paging3 to page though data progressively when requesting a large dataset. It relies on coroutines and Flow for handling concurrency, but Paging3 also has support for using RxJava, or a ListenableFuture from Guava. I am also showing an example using jetpack Compose, but support for using
Android Paging3 cheat sheet Lire la suite »
How to add an image to your Android application?
Image resources in Android Studio Lire la suite »
Android already had available concurrency mechanisms in the Java language, so why add Kotlin Coroutines? And why is Android so intertwined with the Kotlin language?
Why does Android have coroutines? Lire la suite »
Tinting an image : hints of the problem When we first started adding color over a raster image in this previous article, you may have noticed that some values of BlendMode we used resulted in the image being used only as a contour. When we are trying to add a pattern to an image, this is
Solving the problem of adding a pattern and a color to a raster image Lire la suite »
