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Situation:
I intend to use a Java library and I only have an AAR file from a Maven repository but I need the JAR file.
Background story:
I tried to compile a library, but its Gradle structure was unstable. So I asked for a compiled jar file, and its developer handed me an aar file from some Maven repository (the developer couldn't compile his own project). The Gradle configuration was a mess, it depended on multiple libraries and Gradle has thrown some exceptions.
I tried to use it in my IDEA IDE, but it couldn't see it. A library project should be able to be compiled into a jar file, right?
Question:
What should I do to convert that AAR file to a JAR file?
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The main difference is aar is splitted inside android to jar. If your app will be used only in user app only in android studio then aar is preferred. If you are planning for app to communicate with c/c++ compiled lib.so file jar is preferred.
In android studio, open the Project Files view. Find the . aar file and double click, choose "arhcive" from the 'open with' list that pops up. This will open a window in android studio with all the files, including the classes, manifest, etc.
AAR files can contain Android resources and a manifest file, which allows you to bundle in shared resources like layouts and drawables in addition to Java classes and methods. AAR files can contain C/C++ libraries for use by the app module's C/C++ code.
The AAR file consists of a JAR file and some resource files (it is basically a standard zip file with a custom file extension). Here are the steps to convert:
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