xamarin android external sd

Question

Hi, I am trying to allow the user to save backups to the external SD card, but I am not able to access that with android 11 and up.
From what I have been reading, this should give the needed path:
Android.OS.Environment.GetExternalStoragePublicDirectory(Android.OS.Environment.DirectoryDocuments).Path

However, this is the internal documents folder. I am unable to fid a way to access Documents folder on the SD card, does anyone know how to do so?

Answer 1

Hello,

Referring to this documentation Storage updates in Android 11, we could note that Android 11 has updated the storage mechanism.

App-specific directory on external storage
Starting in Android 11, apps cannot create their own app-specific directory on external storage. To access the directory that the system provides for your app, call getExternalFilesDirs().

For usage sample and more detailed explanations, you could refer to [getExternalFilesDir](https://developer.android.com/reference/android/content/Context#getExternalFilesDir(java.lang.String\)).

I am trying to allow the user to save backups to the external SD card.

Using this API for saving backups could be more safety, due to these files are internal to the application.

Best Regards,

Alec Liu.

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