Creating app's custom folder in internal storage root path without any permissions

[maq796113]

Library version: 1.5.3
OS version: Android 11
Device model: Infinix X693

Describe the bug
So basically my main objective is to gain access to the Internal Directory "storage/emulated/0" and create a new directory with my Android App's name. The app will be storing some audio files there. I have attached the code (Github Gist) that I used. I made use of SimpleStorageHelper that helps me get the access to a specific folder in the internal storage. But I want access to the whole root so that I can make my directory there. Focus on the createAudioFolder() function at line 42 where I use PublicDirectory() to get DocumentFile parent. I am also trying to get absolute path to the folder which I will later use for MediaRecorder. I have to pass a path to the setOutputFile() as an argument which will create an audio file at line 116.

In the video, you can see storageHelper.requestStorageAccess() is called , it asks for access to the files but then it crashes and it reverts back to the original Login Activity.
https://user-images.githubusercontent.com/67544354/210143938-f11fb483-8b97-489e-ac96-876c04708ff3.mp4

https://gist.github.com/maq796113/a1757542fb5891def3d4285cdb044a6c

Stacktrace

[anggrayudi]

I want access to the whole root

I understand that you want to create a folder without prompt any dialogs to the user, i.e. /storage/emulated/0/YourAppName, but you can't do that since API 30 without full disk access (android.permission.MANAGE_EXTERNAL_STORAGE).

Even WhatsApp is no longer able to create custom directory like /storage/emulated/0/WhatsApp since Android 12 (reference: #107 (comment)). Thus requesting root access is not a future-proof solution. The best solution is by writing your audio files inside your app's private directory, for example:

• context.getExternalMediaDirs() will return /storage/emulated/0/Android/media/<app-package> (current WhatsApp solution)
• context.getExternalFilesDir(Environment.DIRECTORY_RECORDINGS) will return /storage/emulated/0/Android/data/<app-package>/files/Recordings

Those paths do not require any storage permissions.

it crashes and it reverts back to the original Login Activity

You're trying to create an enum from string /storage/emulated/0, which is not available in the enum constants. Use available constants from this file: PublicDirectory.kt, for example PublicDirectory.MUSIC, PublicDirectory.DOWNLOADS, etc.

[maq796113]

Can you give me an example? How should I go about implementing it?

[anggrayudi]

Here's the example:

val input = URL("https://google.com/audio.mp3").openStream()
val folder = externalMediaDirs.first()
val file = File(folder, "recitation.mp3")
val output = file.outputStream()
// will be located in /storage/emulated/0/Android/media/<app-package>/recitation.mp3
output.write(input.read())