If you’ve read this article up to this point you should already know that we have to put the app icon file inside res folder and then set it in the AndroidManifest.xml file. I will describe how you can do it in the next section. In React Native you will most likely keep icons or images in a global folder (outside Android project) so you can share it with iOS version of the app, but here you will keep for instance your app icon. Res folder contains all application resources such as layouts, drawables or UI strings. apk with this number lower or equal to the previous version. It is used to determine which application file is newer. VersionCode – this is basically an integer number that describes your build version. VersionName – this is the version of your app that will be visible to users. You can read more about these three properties in a very detailed post. TargetSdkVersion – it specifies the Android version your app is targeting. React Native supports all Android versions higher than 4.1 (API 16). MinSdkVersion – it describes the minimum Android OS version that your app will support. It is recommended to compile with the latest SDK. There are a couple of important properties so let’s go through each one.ĬompileSdkVersion – it tells Gradle what version of Android SDK to compile your app with. Using settings from the main build file lets you define configurations that apply to all modules in your project. What it means is that you app will use some project-wide properties that are defined in the top-level adle file that is located in android folder. When you look at android/app/adle, you can see that some values are referred from rootProject. TargetCompatibility JavaVersion.VERSION_1_8 SourceCompatibility JavaVersion.VERSION_1_8

SampleProject/android/app/adleĬompileSdkVersion Apart from the things like dependencies or repositories, that will be mostly edited by the react native linking functionality, you will also find android section. In your newly created React Native app, you have only one module (app folder) so its build file will have much more information. It is used mostly for things that are common for all modules. The first one is the main build file for the whole project. It is actually two files because you can find two of them one in at root folder and another in an app folder. If its property required is set to “true”, then your app will not be available on devices that do not support that feature.Īnother important file is adle. By adding it you can define what feature your app needs in order to be fully functional e.g. Another useful tag in the manifest you can use is uses-feature. It also contains information about user permissions that need to be granted by the user in order to work correctly. This is the place where you can set your app name, icon and other attributes as part of the application tag. The picture shows the files that will be discussedĪndroidManifest.xml is the file that describes your app. There is definitely more than I will show you here, but I would like to focus on files that you will most likely need to change during the development. The first thing to know is the basics about Android project structure what folders or files you can find there and what they are responsible for. I will also provide you links to the documentation or other sources where you will find more details about each topic. The main goal is to have all the important points in one place. Side note: This article won’t describe every detail about the subject.

That’s why we came up with the idea to gather a few important things you should know about Android if you are coming either from a frontend or iOS background. In these situations, developers have to quickly gain knowledge about other OS’s specifics or ask their colleagues for help. When you want to build a mobile app for both iOS and Android it is ideal to have at least one person in a team with knowledge about each platform, but it is not always possible. During this time we’ve worked on several projects that had teams build up from developers with different backgrounds: native or frontend. For the last year, we’ve been using React Native more and more.

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