How to Create a JAR File from an Android Studio Project?

Creating a JAR File from an Android Studio Project

Android Studio provides a convenient way to package your project into a JAR file, allowing you to reuse code between projects. Here's a step-by-step guide for creating a JAR file from an Android Studio project:

1. Prepare the Project:
Modify the library project's build.gradle file to add the tasks deleteJar and createJar. Make sure to specify a dependency between createJar and deleteJar, as shown in the example code below:

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)

2. Generate the JAR File:
Navigate to the Gradle panel in Android Studio and expand the tasks for the library project. Find the "createJar" task and double-click it to execute it.

3. Retrieve the JAR File:
Once the task completes successfully, the JAR file will be generated in the specified path (e.g., libs/jars/logmanagementlib.jar).

4. Use the JAR File in Another Project:
Copy the generated JAR file into the libs folder of your target project. Right-click the JAR and select "Add as Library" to include it in the project.

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