AAPT ERROR: Invalid BCP 47 tag in directory name b+sr+latn_values

Question

I am trying to run a command via aapt to test out the functionality.

./aapt package -f --no-crunch 
-M /home/username/AndroidStudioProjects/ProjectName/androidTest/src/main/AndroidManifest.xml 
-I /home/username/Android/Sdk/platforms/android-27/android.jar 
-S /home/username/AndroidStudioProjects/ProjectName/androidTest/build/intermediates/res/merged/androidTest/debug/

But I get this weird error message.

invalid resource directory name: /home/username/AndroidStudioProjects/ProjectName/androidTest/build/intermediates/res/merged/androidTest/debug/ drawable-xhdpi-v4_abc_list_selector_disabled_holo_dark.9.png.flat
invalid resource directory name: /home/username/AndroidStudioProjects/ProjectName/androidTest/build/intermediates/res/merged/androidTest/debug/ drawable_abc_ic_go_search_api_material.xml.flat
invalid resource directory name: /home/username/AndroidStudioProjects/ProjectName/androidTest/build/intermediates/res/merged/androidTest/debug/ drawable-xxxhdpi-v4_abc_scrubber_control_to_pressed_mtrl_005.png.flat
invalid resource directory name: /home/username/AndroidStudioProjects/ProjectName/androidTest/build/intermediates/res/merged/androidTest/debug/ color_abc_primary_text_material_light.xml.flat
invalid resource directory name: /home/username/AndroidStudioProjects/ProjectName/androidTest/build/intermediates/res/merged/androidTest/debug/ drawable-mdpi-v4_abc_btn_check_to_on_mtrl_000.png.flat
ERROR: Invalid BCP 47 tag in directory name b+sr+latn_values

And so forth like this.

I am using Gradle 3.0.1 to build the project. What causes this error ?

Answer 1

Gradle 3.0.1 doesn't uses aapt it uses aapt2 by default. The build process is different for both of these.More details in this link.

aapt2 can be disabled my adding android.enableAapt2=false in gradle.properties file.