How to automatically put the APK into the asset after the build by android gradle script

Question

I'm using DexClassLoader for dynamic loading class, and now, I need to copy APK file into the asset folder every time. is there any way to add automatically to android gradle script Thanks

Answer 1

You can do that using a python, also make sure you already installed the python before doing this.

Create a python file in your root project.

build.py

import subprocess
import shutil
import os
import sys

# Call this function to build the apk via gradle.
def build_cmd():

    # This will build your debug apk.
    buildProject = "gradlew.bat clean --profile --recompile-scripts --offline --rerun-tasks assembleDebug";

    # If you want to build a release apk use this instead.
    # buildProject = "gradlew.bat clean --profile --recompile-scripts --offline --rerun-tasks assembleRelease -Pandroid.injected.signing.store.file=" + os.path.abspath("store_key.jks") + " -Pandroid.injected.signing.store.password=pass123 -Pandroid.injected.signing.key.alias=key_alias -Pandroid.injected.signing.key.password=pass123"

    # As of Python 3 use run() instead of call() function
    # https://docs.python.org/3/library/subprocess.html#older-high-level-api
    subprocess.run(buildProject, shell=True)

# Call this function to move the builded apk to your desire directory.
def moveDir():
    # Get the generated apk
    apk_path = "./app/build/outputs/apk/debug/app-debug.apk"

    # apk will rename and move to asset directory
    shutil.move(apk_path, "./app/src/main/assets/app-debug.apk")


if __name__ == '__main__':

    build_cmd()
    moveDir()

Then run the build.py in the terminal

python build.py

and wait until the gradle task finish.

EDIT:

Because some members don't have python environment on this project instead of using a script in python try to add some task in your app/build.gradle

android {

    // Some stuffs of yours....

    task copyAPKtoAsset(type: Copy) {
        from "/build/outputs/apk/debug/app-debug.apk", "/build/outputs/apk/release/app-release.apk"
        into "/src/main/assets/"
    }

    afterEvaluate {
        packageDebug.finalizedBy(copyAPKtoAsset)
    }
}

Build your project and check your assets directory after.