Android Question Question about attribute "requestLegacyExternalStorage"

[Deleted member 103]

Hi,
I have a Nokia 7.1 with android 10 and have no access problem to File.DirRootExternal and that even though I do not use the attribute "requestLegacyExternalStorage".
A customer of mine, with Galaxy A50 Android 10, gets the following error message: "Caused by android.system.ErrnoException: open failed: ENOENT (No such file or directory)".
The file is listed by the app, but cannot be opened.
How can it be that I do not get the same error message with my Nokia?
Does anyone here know why?

Spoiler: Error

Fatal Exception: java.io.FileNotFoundException
/storage/emulated/0/Master-Of-Regularity/logs/20201001_211940.log: open failed: ENOENT (No such file or directory)

Fatal Exception: java.io.FileNotFoundException: /storage/emulated/0/Master-Of-Regularity/logs/20201001_211940.log: open failed: ENOENT (No such file or directory)
at libcore.io.IoBridge.open(IoBridge.java:496)
at java.io.RandomAccessFile.<init>(RandomAccessFile.java:289)
at anywheresoftware.b4a.randomaccessfile.RandomAccessFile.Initialize2(RandomAccessFile.java:103)
at fg.MasterOfRegolarity.main._vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv6(main.java:4695)
at fg.MasterOfRegolarity.main._btnreset_click(main.java:1442)
at java.lang.reflect.Method.invoke(Method.java)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:213)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:197)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:193)
at anywheresoftware.b4a.objects.ViewWrapper$1.onClick(ViewWrapper.java:80)
at android.view.View.performClick(View.java:7870)
at android.widget.TextView.performClick(TextView.java:14970)
at android.view.View.performClickInternal(View.java:7839)
at android.view.View.access$3600(View.java:886)
at android.view.View$PerformClick.run(View.java:29363)
at android.os.Handler.handleCallback(Handler.java:883)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:237)
at android.app.ActivityThread.main(ActivityThread.java:7814)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1075)

 

[Erel]

1. Think carefully if you really need this folder. Soon it will be much more difficult to access it.
Use File.DirInternal or rp.GetSafeDirDefaultExternal.

2. Read this: https://www.b4x.com/android/forum/threads/android-jar-targetsdkversion-minsdkversion.87610/
You cannot access this folder without the attribute. I guess that your device allowed access because it was previously installed with a lower targetSdkVersion.

 

[Deleted member 103]

Thank you Erel, you absolutely right.
If you reinstall the app, the error can be reproduced.