Android Question null in Parse uri in 4.4.2

[Blue.Sky]

Hi
I use below Function

Sub GetPathFromContentResult(UriString As String) As String
  If UriString.StartsWith("/") Then Return UriString 'If the user used a file manager to choose the image
 
  Dim Cursor1 As Cursor
  Dim Uri1 As Uri
  Dim Proj() As String = Array As String("_data")
  Dim cr As ContentResolver
  cr.Initialize("")
If UriString.StartsWith("content://com.android.providers.media.documents") Then
      Dim i As Int = UriString.IndexOf("%3A")
      Dim id As String = UriString.SubString(i + 3)
      Uri1.Parse("content://media/external/images/media")
      Cursor1 = cr.Query(Uri1, Proj, "_id = ?", Array As String(id), "")
  Else
      Uri1.Parse(UriString)
      Cursor1 = cr.Query(Uri1, Proj, "", Null, "")
  End If
 
  Cursor1.Position = 0
  Dim res As String
  res = Cursor1.GetString("_data")
  Cursor1.Close
  Return res
 
End Sub

I dont have a problem in all version android but in 4.4.2 when i select image,
it return below path and when parse it,result is null
content://com.android.providers.downloads.documents/document/1492

 

[Erel]

Which line causes this error?

Why do you need the file path? It is possible that the image doesn't have any path (it can come from a database for example).

 

[Blue.Sky]

Which line causes this error?

Why do you need the file path? It is possible that the image doesn't have any path (it can come from a database for example).

return null when use it.
I want to upload any file to server
I can parse uri from content://com.android.providers.documents/document/1492 but not content://com.android.providers.downloads.documents/document/1492

 

[Erel]

Are you uploading the files with http or ftp?

 

[Blue.Sky]

Are you uploading the files with http or ftp?

Sorry Erel,it is big project.i dont have any problem in upload
I only have problem in get uri of content://com.android.providers.downloads.documents/document/1492
I have forced use file explorer

 

[Erel]

The correct / recommended way is to work with the InputStream. Don't try to get the file path at all.

 

[Blue.Sky]

The correct / recommended way is to work with the InputStream. Don't try to get the file path at all.

I use InputStream but get error that cannot find path.
I put by this topic Erel,I use File explorer
Thank you

 

[Erel]

I assume that you are using ContentChooser. You are using it incorrectly. You do not need to find the file path.

Sub cc_Result (Success As Boolean, Dir As String, FileName As String)
 If Success Then
  Dim in As InputStream = File.OpenInput(Dir, FileName)
  'work with inputstream.
 End If
End Sub

 

[Blue.Sky]

I assume that you are using ContentChooser. You are using it incorrectly. You do not need to find the file path.

Sub cc_Result (Success As Boolean, Dir As String, FileName As String)
If Success Then
  Dim in As InputStream = File.OpenInput(Dir, FileName)
  'work with inputstream.
End If
End Sub

Thank you Erel but in Download folder in android 4.4.2 cannot handle inputstream

 

[Erel]

Which error do you get?

 

[Blue.Sky]

Which error do you get?

 

[Erel]

Please post the error message from the logs.

I don't think that the error message above can happen from the code in post #8.

 

[Blue.Sky]

Please post the error message from the logs.

I don't think that the error message above can happen from the code in post #8.

Ok please wait to get error and post here