[FIXED] open failed: EACCES (Permission denied) but only on Android 10

Issue

When downloading a file from URL to the downloads directory it crashes on Android 10 Emulator:

java.io.FileNotFoundException: /storage/emulated/0/Download/shareFile.mp3: open failed: EACCES (Permission denied)

This is how I download the file:

val storage = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)
withContext(Dispatchers.IO) {
    URL(soundURL).openStream().use { input ->
        FileOutputStream(File(storage.absolutePath, "shareFile.mp3")).use { output ->
            input.copyTo(output)
        }
    }
}

It crashes in the 4th line when calling FileOutputStream

I got both permissions granted: READ_EXTERNAL_STORAGE, WRITE_EXTERNAL_STORAGE

On my Android 11 and 12 Devices everything works fine

Solution

If you target Android 10, you need to set the value of requestLegacyExternalStorage to true in your app's manifest file:

    <application
        android:requestLegacyExternalStorage="true"
    </application>

For more information, you can see here:

https://developer.android.com/training/data-storage/use-cases#opt-out-in-production-app

Answered By - ninhnau19
Answer Checked By - David Goodson (JavaFixing Volunteer)