iOS Question Can save external file but can't get data

[Andris]

I've been able to successfully do all the steps needed to access external files like CSV as well as my own custom extension types. All end up triggering Application_OpenUrl as they should, and I can successfully extract the file name. But for some reason, the byte length of Data ends up as 9 no matter what I do.

For example, I receive a CSV file via email and send it to my app, triggering Application_OpenUrl. The file name is fine, but I see no data. The CSV file attached to the email is perfectly OK and I can open it with a spreadsheet, so the file itself is not a problem.

Here's my code:

Private Sub Application_OpenUrl (Url As String, Data As Object) As Boolean
    'extract filename from Url
    Dim fname As String
    fname=Url.SubString(Url.LastIndexOf("/"))
 
    'convert data object
    Dim ser As B4XSerializator
    Dim fbytes() As Byte
    fbytes=ser.ConvertObjectToBytes(Data)
 
    Log(fbytes.Length)   '(ALWAYS RESULTS IN "9")
 
    'write data into file in /Download folder
    Dim out As OutputStream = File.OpenOutput(SafeDir & "/" & ImportDir, fname, False)
    out.WriteBytes(fbytes, 0, fbytes.Length)
    out.Close 
 
    Return True
End Sub

What am I doing wrong?

 

[Erel]

What is the output of Log(Data) and Log(GetType(Data)) ?

 

[Andris]

What is the output of Log(Data) and Log(GetType(Data)) ?

Adding Log(Data) and Log(Get(Data)) before Log(fbytes.Length), the entire Log output is:

Application_Start
Application_Active
Application_Inactive
Application_Background
+[CATransaction synchronize] called within transaction
+[CATransaction synchronize] called within transaction
openURL: file:///private/var/mobile/Containers/Data/Application/665787F5-5982-4C88-80ED-ACBD35C0EFFF/Documents/Inbox/180129093314_Budapest-10.csv, com.apple.mobilemail, (null)
Application_Openurl
null
(null)
9
Application_Foreground
Application_Active

The three output values are null, (null), and 9 respectively.

If I grab a CSV file from the iOS File app instead, outputs are the same, though the openURL line is:

openURL: file:///private/var/mobile/Containers/Data/Application/665787F5-5982-4C88-80ED-ACBD35C0EFFF/tmp/com.xxxxx.xxxxxxx-Inbox/180122072220_TestFolder1%202.csv, com.apple.DocumentsApp, (null)

So I guess it looks like data is not being passed along?

 

[Erel]

Your code is wrong. You don't need to do anything with the Data parameter.

See the tutorial: https://www.b4x.com/android/forum/threads/open-external-files-with-your-app.50525/

 

[Andris]

Your code is wrong. You don't need to do anything with the Data parameter.

See the tutorial: https://www.b4x.com/android/forum/threads/open-external-files-with-your-app.50525/

Oh I see now. Thank you!