.ARB File Extension
Application Resource Bundle
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What is an ARB file?
An ARB file is an application resource bundle used by an Android app created using Dart or Flutter. It contains localization strings used to show the app's text in a user's language. Developers eventually convert ARB files into corresponding .DART files, which store the localization strings as part of Dart source code.
More Information
Using Dart or Flutter, Android app developers can generate a template ARB file for their application. This template file contains a single JSON table, which lists all the app's strings in the app's default language. Developers can then copy this table into another file, replace the default strings with internationalized versions of their strings, and save the resulting ARB file(s) to create a translation file(s) for their application.
After creating all the translation files their app needs, developers can convert their ARB files into DART files and import them into their app, for use in localization-related code.
How to open an ARB file
You can open and edit the data an ARB file contains in any text or source code editor, such as Microsoft Visual Studio Code (cross-platform) or GitHub Atom (cross-platform). To use an ARB file as an application resource bundle, you must install Dart (cross-platform) or Flutter (cross-platform).