Android Question httpJob downloaded pdf attempted to copy input stream to local storage failed

[Mahimahi]

I attempted to download a pdf via httpJob by file copy http input stream to "OutStream". "FindUserDownloadsFolder" is File.DirInternal

OutStream = File.OpenOutput(FindUserDownloadsFolder, customPdfFilenameToSave, False)
File.Copy2(Job.GetInputStream,OutStream)

then I attempted to open it with OpenPDF
OpenPDF("file://" & File.Combine(FindUserDownloadsFolder, customPdfFilenameToSave))

Sub OpenPDF(FileName As String)
Dim i As Intent 'Requires a reference to the Phone library
i.Initialize(i.ACTION_VIEW, FileName)
i.SetType("application/pdf")
i.WrapAsIntentChooser("Choose PDF Viewer")
StartActivity(i)
End Sub

Error I got: android.os.FileUriExposedException: file:///data/user/0/com.abcd.doc.updater/files/abcd.pdf exposed beyond app through Intent.getData()

Where "com.abcd.doc.updater" is my Build Configurations, "Package Name". And I checked via internal storage of the phone, such path [internal storage]/android/data/com.abcd.doc.updater/ or any subdirectories of that do not exist.

What could be the issue here? Can someone shed some light? Is File.DirInternal the best place to store downloaded files? e.g. pdfs? Or a different place like File.DirDefaultExternal? Does access permission come into play for any place to store the downloaded file?

 

[Erel]

Please use [code]code here...[/code] tags when posting code.

 

[Mahimahi]

Thanks Erel. Here it is:

OutStream = File.OpenOutput(FindUserDownloadsFolder, customPdfFilenameToSave, False)
File.Copy2(Job.GetInputStream,OutStream)

OutStream.Close

'then I attempted to open it with OpenPDF
OpenPDF("file://" & File.Combine(FindUserDownloadsFolder, customPdfFilenameToSave))

Sub OpenPDF(FileName As String)
   Dim i As Intent 'Requires a reference to the Phone library
   i.Initialize(i.ACTION_VIEW, FileName)
   i.SetType("application/pdf")
   i.WrapAsIntentChooser("Choose PDF Viewer")
   StartActivity(i)
End Sub

Sub FindUserDownloadsFolder As String
   Return File.DirInternal
End Sub

 

[DonManfred]

android.os.FileUriExposedException

android.jar / targetSdkVersion / minSdkVersion
FileProvider

Additionally you are not closing the outputstream.

 

[Mahimahi]

Thanks DonManfred. I actually closed the outputstream. But neglected to include in the code above, I've updated the code now. Sorry about that. Is there something I am missing that caused the inability to save under [internal storage]/android/data/com.abcd.doc.updater/? Such path does not even exist when I checked with file manager. Is there access permission to File.DirInternal? Which path is best to save downloaded files like pdfs and to open with default pdf viewer? Please advise. Thanks.

 

[Erel]

You need to use FileProvider: FileProvider

 

[Mahimahi]

That's just amazing Erel. Thank you so much. It's like magic, it works now. A quick followup question regarding the "SetType", I had set it to "text/plain" despite I am opening a pdf and it works, but where can I lookup the different "SetType" I can set for other file types? other than the "image/*" in your example. Please advise. Thanks.

 

[DonManfred]

You need to store/copy the file to the Starter.Provider.Sharedfolder

 

[Mahimahi]

Sorry posted the wrong code. I tried to store the input stream to Starter.Provider.Sharedfolder. It seems like storing of the file had failed, folder [internal storage]/android/data/com.abcd.doc.updater/ were not created under Android 8.0. On Android 6.0 it works great now, which before adding FileProvider was failing.

OutStream = File.OpenOutput(FindUserDownloadsFolder, customPdfFilenameToSave, False)
File.Copy2(Job.GetInputStream,OutStream)

OutStream.Close

'then I attempted to open it with OpenPDF
OpenPDF("file://" & File.Combine(FindUserDownloadsFolder, customPdfFilenameToSave))

Sub OpenPDF(FileName As String)
   Dim i As Intent 'Requires a reference to the Phone library
   i.Initialize(i.ACTION_VIEW, FileName)
   Starter.Provider.SetFileUriAsIntentData(i, FileName)
   i.SetType("application/pdf")
   StartActivity(i)
End Sub

Sub FindUserDownloadsFolder As String
   Return Starter.Provider.SharedFolder
End Sub

Please advise. Thanks.

 

[Erel]

You should never see a URI starting with file://

Please start a new thread and post the code and the error message.