Android Question [Solved] Creating sub-directory with ExternalStorage

ac9ts · Sep 20, 2019

I can currently read and write to a root directory on a SDCard using the ExternalStorage class (v1.02) on Android 9. My question is, how do I create directories under the root directory?

File structure:

SDCard/
____RootDir/ << Can read and write here
________NewDir/ << How to create this level?
____________NewDir2/ << Would ultimately like to create this one as well

DonManfred · Sep 20, 2019

Have a look here: https://www.b4x.com/android/forum/t...nternal-memory-to-sd-card.102705/#post-645844
It does create a folder in the rootfolder.

It also shows how to find the newly created folder. once you have a reference to this folder you can create another folder in there.

ac9ts · Sep 20, 2019

Thank you, @DonManfred

I added this to my ExternalStorage class.

B4X:

'Creates a new directory
Public Sub FindDirOrCreate(Parent As ExternalFile, Name As String) As ExternalFile
    Dim f As ExternalFile = FindFile(Parent, Name)
    If f.IsInitialized = False Then
        Return DocumentFileToExternalFile(Parent.Native.RunMethod("createDirectory", Array(Name)))
    Else
        Return f
    End If
End Sub

@Erel Maybe update the official class?

Android Question [Solved] Creating sub-directory with ExternalStorage

ac9ts

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DonManfred

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Android Question [Solved] Creating sub-directory with ExternalStorage

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