How to Package an Android Studio Project as a JAR File?

How to Export an Android Studio Project as a JAR

When working with complex Android Studio projects that utilize multiple libraries and external dependencies, it is often necessary to create a single JAR file that encapsulates all the necessary components. This streamlined approach allows for easy integration with other projects. Here's a step-by-step guide to achieve this:

1. Modify the Library Project's Build Gradle:

   • In the myLib project's build.gradle file, add two Gradle tasks: deleteJar and createJar.
   • Make createJar dependent on deleteJar and build.

   task deleteJar(type: Delete) {
       delete 'libs/jars/logmanagementlib.jar'
   }
   
   task createJar(type: Copy) {
       from('build/intermediates/bundles/release/')
       into('libs/jars/')
       include('classes.jar')
       rename('classes.jar', 'logmanagementlib.jar')
   }
   
   createJar.dependsOn(deleteJar, build)

   Copy after login

2. Locate the New Gradle Tasks:

   • Expand the Gradle panel on the right of Android Studio.
   • Navigate to yourlibrary -> otherTasks.

3. Run the createJar Task:

   • Double-click on the createJar task.

4. Retrieve the Generated JAR:

   • Once the task completes successfully, find the generated JAR in the path specified in createJar's into parameter (typically libs/myLib.jar).

5. Integrate the JAR into Other Projects:

   • Copy the JAR into the lib folder of the target project.
   • Right-click on the JAR and select "Add as Library."

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