Android Question Problem on DirDefaultExternal

I

imak123

Member
I want to write file to external storage on my emulator, however I meet the following error. Do I need to get permission to write file on external storage ?
Thanks
Mak

Error : java.io.FileNotFoundException: /storage/emulated/0/Android/data/b4a.example/files/introb4a.txt (No such file or directory).....

Code :

B4X: 
Private Sub btWrite_Click
Dim fdName,tarDir As String

    tarDir = File.DirDefaultExternal

    fdName = "introb4a.txt"

    'Write to external

    If File.ExternalWritable Then

        File.WriteList(tarDir,fdName,contList) -< Error Occur here !

        ToastMessageShow("Just save the file",False)

    Else

        ToastMessageShow("Cannot Save the File",False)

      
    End If

End Sub
 
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Erel

B4X founder
Staff member
Licensed User
Longtime User
It is very simple: whenever you see code with File.DirDefaultExternal or File.DirRootExternal you know that the code will not work.

[B4X] Features that Erel recommends to avoid

Many things have changed in B4X and also in the underlying platforms. I will try to list here all kinds of (old) features that have better alternatives. B4X is backward compatible so these features still work. The recommendations are more relevant for new projects or when implementing new...
www.b4x.com
 
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