![]() ![]() $ANDROID_HOME/tools/bin/avdmanager create avd -n Pixel_API_28_AOSP -d pixel -package "system-images android-28 default x86_64 " Note: It is OK if the emulator’s version is not aligned with the SDK or platform-tools' version you currently have installed (e.g. Preliminary: Upgrade your emulator executable to the latest version. If ANDROID_HOME isn’t set, either set it yourself or run the following commands after cd-ing into the home folder. Locate your 'Android home' folder - typically set in the ANDROID_HOME environment variable, or in its successor - ANDROID_SDK_ROOT. While it’s possible to do this using Android Studio, we’ll focus on the command line, as it is also good for headless CI machines. Here’s how to install them using the command line an emulator with Google APIs installed (right): Here’s a visual comparison between the two - an SDK 28 (Android 9) AOSP emulator (left) vs. They can be installed alongside regular emulators. While possibly lacking some of the extended Google services, and a bit less fancy overall, we strongly recommend to strictly use this flavor of emulators for running automation/Detox tests. Be it the preinstalled Google play-services - which tend to take up a lot of CPU, or even Google’s gboard Keyboard - which is full-featured but overly bloated: These encourage flakiness in tests, which we are desperate to avoid in automation.įortunately, the Android team at Google offers a pretty decent alternative: AOSP emulators (Android Open-Source Project). We’ve long proven that for automation - which requires a stable and deterministic environment, Google’s emulators running with Google APIs simply don’t deliver what’s needed. But, wait - don’t go and install the default one: read through, first. If you haven’t already done so, you should set up an Emulator. Mobile-apps' automation needs an Android device to run on. * Inspect the content of your ANDROID_SDK_ROOT and ANDROID_HOME environment variables. The path to the SDK’s root directory is bundled into the global PATH on your computer.The path to the SDK’s root directory is set into the ANDROID_SDK_ROOT environment variable.Whatever option you choose, and whichever platform you’re running on (Mac, Linux, Windows), we strongly recommend that eventually you would have 2 additional things set up: For the pure-tools option, refer to the Command line tools only section at the bottom.įor more help on setting the SDK up, this guide might be helpful. Both cases are covered in Google’s Android guide about Android Studio. However, for CI agents - possibly running with no GUI, or if you simply don’t want the somewhat bloated piece of software on your computer, it is possible to simply download the SDK and tool-set, purely. If you have Android Studio installed - as most of us do, then the SDK should be available for you somewhere on your machine *. Note: This is more suitable if your environment is fairly clean, and does not contain versions from 3rd-party installers (e.g. Consider employing the JAVA_HOME variable to get things to work right. Install OpenJDK 11 on top of the existing versions ( how to check?).Use one of the options suggested in this Stack Overflow post.On MacOS, in particular, Java comes from both the OS and possibly other installers such as homebrew.If otherwise the version is simply wrong, try these course of actions: To try to understand which of the two is true, use this guide. If java -version yields an error, it is likely that java is either not in your path or not even installed at all. For Detox, what the command-line sees is what matters. Note: Do not be confused by the Java version potentially used by your browsers, etc. To check for your real java-executable’s version, in a command-line console, run: If you want to run with React Native 66 and Android 12 then it needs to be at least Java 11, otherwise you should have Java 8. The bottom line is that Android needs Java installed. This is the most basic step in the process, as without a proper Java SDK installed, nothing Android-ish works - at least not from command-line, which is mandatory for executing Detox. Hence, you may find yourself not 100% aligned with the recommendations here, and should consider being so. Note that running automated UI tests is not the same as developing Android apps. This guide provides some core practices to follow in setting up a stable, reliable environment for running automated UI tests using Android emulators (using Detox, in particular) - be it on a personal, local computer, or a powerful CI machine. Setting Up an Android Development & Testing Environment ![]()
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