B4A Library Automated FTP Library

public bool directoryExists2(string directory, string mainDirectory)
        {
            try
            {
                var list = this.GetFileList(mainDirectory);
                if (list.Contains(directory))
                    return true;
                else
                    return false;
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                return false;
            }
        }

'Call the command like this:
FTP.FileOrFolderExist("plane.jpg" , "test/files", False)

'Callback sub in calling module:
Sub FTP_FileExist(Found As Boolean)
     If Found Then Log("True") Else Log("False")
End Sub

'If you need a return value, you must include this sub below in
'the calling module.
'
Sub FTP_CmdCompleted(Vars() As String)
     Log(Vars(0)) 'Command
     Log(Vars(1)) 'Success
     Log(Vars(2)) 'ReplyCode
     Log(Vars(3)) 'ReplyString
End Sub

Sub Activity_Create(FirstTime As Boolean)
   FTP.Initialize(Activity, Me, "my-ftp-server", "user", "pass", 21, True, False)   
   downloadFtpFiles
End Sub

Sub downloadFtpFiles
   ftpDown = True   
   If FTP.WiFi_IsConnected Then
     FTP.SetProcessCompleteOn(True)         
     FTP.SetCompletedDownloadDialog(True,"Download erfolgreich")
     FTP.DownloadFileSet(File.DirRootExternal, Array As String("*.new", "*.new"), False)   
  Else
    Msgbox("Message......","Error")
  End If
End Sub

Sub uploadFtpFiles
   ftpDown = False   
   If FTP.WiFi_IsConnected Then
     FTP.SetStealthOn(True)
     FTP.UploadFileSet("/", Array As String(File.DirRootExternal & "/*.db", "*"), False)   
     End If
End Sub

Sub FTP_ProcessComplete
   Log("ftpDown is " & ftpDown)
   If ftpDown = True Then uploadFtpFiles
End Sub