Android.mk for android studio project

Android.mk

LOCAL_PATH:= $(call my-dir)
include $(CLEAR_VARS)
my_package_name := Demo

LOCAL_MODULE_TAGS := optional

LOCAL_SRC_FILES := $(call all-java-files-under, app/src/main/java)

LOCAL_RESOURCE_DIR := $(LOCAL_PATH)/app/src/main/res
LOCAL_RESOURCE_DIR += prebuilts/sdk/current/support/compat/res/

LOCAL_MANIFEST_FILE := app/src/main/AndroidManifest.xml

LOCAL_STATIC_ANDROID_LIBRARIES := androidx.appcompat_appcompat
LOCAL_STATIC_ANDROID_LIBRARIES += com.google.android.material_material
LOCAL_STATIC_ANDROID_LIBRARIES += androidx-constraintlayout_constraintlayout

LOCAL_AAPT_FLAGS := --auto-add-overlay
LOCAL_AAPT_FLAGS +=	--extra-packages androidx.appcompat
LOCAL_AAPT_FLAGS +=	--extra-packages com.google.android.material
LOCAL_AAPT_FLAGS +=	--extra-packages com.jaiselrahman.filepicker

LOCAL_STATIC_JAVA_AAR_LIBRARIES := $(my_package_name)-file-picker

LOCAL_USE_AAPT2 := true
LOCAL_PRIVATE_PLATFORM_APIS := true

LOCAL_PACKAGE_NAME := $(my_package_name)
LOCAL_CERTIFICATE := platform
LOCAL_PROGUARD_ENABLED := disabled
# LOCAL_DEX_PREOPT := false
LOCAL_MODULE_PATH := $(PRODUCT_OUT)/system/app

include $(BUILD_PACKAGE)
# Build aar/jar libs ###########################################################
include $(CLEAR_VARS)
LOCAL_MODULE_CLASS := JAVA_LIBRARIES
LOCAL_MODULE := $(my_package_name)-file-picker
LOCAL_SRC_FILES := app/libs/FilePicker-1.3.2.aar
LOCAL_STATIC_ANDROID_LIBRARIES := \
	androidx.appcompat_appcompat \
	androidx-constraintlayout_constraintlayout
# LOCAL_PRIVATE_PLATFORM_APIS := true
LOCAL_UNINSTALLABLE_MODULE := true
ifeq ($(filter $(modules-get-list),$(LOCAL_MODULE)),)
	include $(BUILD_PREBUILT)
endif

# include $(call all-makefiles-under, $(LOCAL_PATH))