Change offline maps directory to SD. HERE-Maps SDK

Question

How can we change the directory to download the map. By default it is internal storage. But I need the user to select the download directory (device/SD).

I tried to use setIsolatedDiskCacheRootPath method. When I use SECONDARY_STORAGE path, SDK is not initialized. When I use EXTERNAL_STORAGE directory successfully changed, but this directory is located in the device memory ("/storage/emulated/0").

      com.here.android.mpa.common.MapSettings.setIsolatedDiskCacheRootPath(
                System.getenv("SECONDARY_STORAGE")+"/heremap"
                , "MyHereMapService");

Manifest:

    <service
        android:name="com.here.android.mpa.service.MapService"
        android:exported="true"
        android:label="MyHereMapService"
        android:process="global.Here.Map.Service.v2">
        <intent-filter>
            <action android:name="MyHereMapService" />
        </intent-filter>
    </service>

UPDATE: I was able to get the real path to SD. I use method ContextCompat.getExternalFilesDirs(activity, null), which return real path to SD card (secondary storage).

Answer 1

Summary: There is a possibility to change cache directory to sd. User choose ContextCompat.getExternalFilesDirs(activity, null) method, which return path to Secondary storage. Concerning the default here-map cache directory: There is no default directory if you are using the isolated disk cache API. It will cache to whatever folder you have specified.