[BUG] SD Card not appearing in overview dialog on Android 11

[mendhak]

Describe the bug
When using the patched version of the library here, I've noticed that the storage choosing dialog doesn't show the SD card, it will just show the Internal Storage.

I've even given the app the MANAGE_EXTERNAL_STORAGE permission.
It works fine on Android 29, the SD card appears.

Has anyone found a way around this, or do they know what's missing?

To Reproduce
Use the patched version of the library here.
Create an emulator for Android API level 30, ensure that it has an SD card
Open the storage chooser.
Only 'internal storage' appears.

Expected behavior
SD card should also appear

Screenshots

Smartphone (please complete the following information):

• Device: Emulator
• OS: Android 11

[mendhak]

From what I can tell, this line

storage-chooser/storagechooser/src/main/java/com/codekidlabs/storagechooser/fragments/ChooserDialogFragment.java

Line 249 in 9bc33eb

File[] volumeList = storageDir.listFiles();

only gets the /storage/emulated/... path in Android 11+, but it also gets the SD card path in Android 10 and lower. I just don't know why.

[mendhak]

I've got this working in my fork of this repo, so the SD card appears on Android 11+ now.
Added in some additional fixes too:

• Generic file icon for unknown file types
• Use folder icon only for folders
• Detect SD Card on Android 11
• Fix for crash on Android 11

If anyone wants to use it as well,

implementation 'com.github.mendhak:storage-chooser:2.0.4.4b'

I'm checking for the SD card by parsing the getExternalFilesDirs output, because the /storage path is more restricted in Android 11.