Android Question How to Reference a file for Use with ExternalStorage

D

dank

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Hi. I've written an FTP application that copies image files from my phone's internal memory to a hard drive I have attached to my router. For SD card files, I'm trying to use the example program provided by Erel on using ExternalStorage. I understand that output from ListFiles cannot be used directly, but one can use FindFiles instead. However, when I use it, I get the the error "java.io.FileNotFoundException: Camera/1211201928o.jpg (No such file or directory)". What should I use?

B4X: 
            Dim folder As ExternalFile = GetCurrentFolder
            Dim f1 As ExternalFile
            f1 = EStorage.FindFile(GetCurrentFolder, f.Name)
            
            ''Dim in As InputStream = EStorage.OpenInputStream(f)
                        
            Dim sf As Object = ftp.UploadFile(folder.Name,f1.Name,False, "/easystore/Backups/" & f1.name)
            Wait For (sf) FTP_UploadCompleted (ServerPath As String, Success As Boolean)
 
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agraham

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You can only open an input or output stream on the return from FindFile. For my mapping program which keeps a vast quantity of files on External Storage I copy the file to a temporary location where I can then use normal file handling to play with it.
B4X: 
        Dim extfile As ExternalFile = Storage.FindFile(extfolder, Filename)
        If extfile.IsInitialized Then
            ' read and save map file, need to use the commented lines if targeting API 29 or later
            'Dim rp As RuntimePermissions
            'Dim out As OutputStream = File.OpenOutput(rp.GetSafeDirDefaultExternal(""), Starter.MapTempFilename, False)
            Dim out As OutputStream = File.OpenOutput(File.DirRootExternal, Starter.MapTempDestination, False)         
          
            File.Copy2(Storage.OpenInputStream(extfile), out)
            out.Close
            '...
 
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D

dank

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Longtime User

Thanks!. I was afraid that I'd need to do it that way.
 
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