Limited support on CircleCI slowed down emulators and made it difficult to run UI tests. Using resource directly like this makes the emulators able to run much, much more smoothly and quickly.įor a long time, support was confined to our local hardware. Then x86 emulators started supporting Intel’s Hyper-V hypervisors, which lets the emulator use the resources of the host computer directly. If you have been developing for Android since the early years of the platform, you may remember that emulators were very slow.
The biggest change however is the support for nested virtualisation, which allows you to run Android emulators from within this machine image.Īndroid machine images support nested virtualization, which allow running the x86 emulators in CircleCI jobs. This is a virtual machine image, so takes a bit more time than the Docker image mentioned above, but it contains all the tools you may need to build your Android applications, including the SDK, Google Cloud tools for Firebase, Python, Node.JS, and Fastlane. The biggest change is the new Android machine image. The images also ship with variants that have Node.js, the Android NDK, and browser tools preinstalled. The full list of preinstalled tools can be found in the documentation.
It runs in a Docker container and so is very fast to start, and contains everything you might need to get started building Android projects. The Docker image is the main executor teams use. We have made a few tools available for you for building Android:
To get the most out of this article you should have The full source code is available on GitHub - CircleCI-Public/android-testing-circleci-examples, and you can find the working pipelines in the corresponding CircleCI project.
This article will show you how to build and test Android applications for an example project on the CircleCI platform. CircleCI is popular among Android developers for several reasons: it’s quick to get started, fast to execute your builds with high parallelism, (whether native, cross- or multi-platform), and even supports running Android emulators right from CircleCI with our Android machine images.
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