In the case of CountOnMe, you only have one base directory, because you just have one module. Top level folder that contains each module of your app. Run the following.Īlright, now you can see the structure of an. Open Terminal and navigate to the directory containing the app.aab file. In this case, you’ll use the tool unzip, but you can use any similar tool you like. aab file is just a compressed file, uncompress it to take a look at its content. Press locate to open the file location in your file system viewer, e.g., the Finder on macOS. Go to Build ▸ Build Bundle(s) / APK(s) ▸ Build Bundle(s) in the Android Studio menu.Īndroid Studio will show you a prompt for where to find the file. To see how an App Bundle is structured, you’ll generate one for the CountOnMe app. It’s like one app with small Lego blocks to add on. The beauty of splits is that the Android operating system treats the app as a whole, and each split is a small fraction that can be added independently. The difference is that a split APK file can be broken into separate small pieces, one containing the base code and other small APKs containing the app resources that can be installed later. As its name suggests, a split APK is similar to a normal. With this new format, the Play Store will generate many different variations of your APK, depending on your user’s device configuration.Īpp Bundles take advantage of a concept called split APK. aab (Android App Bundle), that you upload to the Play Store instead of the traditional apk. Generating an App BundleĪpp Bundle is a new format called. When you use App Bundles, you’re going to generate different APK versions that only include some of these resources. But the main idea is that you can see the different resources that the app has. Īs you can see in the above image, there are many more files that weren’t mention for brevity. ĭefault resources in French strings, dimens etc. ĭefault resources in Spanish strings, dimens etc. The source code is structured as follows:ĭefault resources in English strings, dimens etc. There is no final project for this tutorial, since you’ll simply use CountOnMe to explore the App Bundle tools in Android Studio.īefore continuing with the tutorial, take a look at the project. Open the project in Android Studio 3.2 or later by selecting Open an existing Android Studio project on the Android Studio welcome screen: You’re going to use it to see how to use App Bundles in practice, by generating and evaluating the content of different APKs.ĭownload the CountOnMe project using the Download Materials button at the top or bottom of this tutorial. If you don’t have it, please download it before continuing.ĬountOnMe is an app that displays a number from 1 to 10, every time you swipe. Note: To use App Bundles, you need to install Android Studio 3.2 or higher. Having a light APK will help you to attract new users to your app and keep existing users. You don’t want to be the app that increases their phone bill, right? They will need to decide what’s more important: streaming videos or downloading your app. Users often have limited mobile data plans, which means that downloading your app may put users in a tricky situation. If your app is too big, users may have to uninstall one or more other apps in order to install yours.Īnother trade-off is how much data your app is going to cost them, depending on their data plan. When users download a new app, they have to take two things into consideration: data and storage consumption. Space is one major reason why a user will install or uninstall your app. Other pre-requisites include knowledge of using bash/Terminal, Gradle, and a developer account on the Google Play Console. If you are completely new to Android development, read through our Beginning Android Development tutorials to familiarize yourself with the basics. Note: This tutorial assumes you’re already familiar with the basics of Android development.
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