Does updating an app overwrite DirInternal files?

[andymc]

My app checks if a file exist when you open it, then either reads from the file or creates a new one. But when a user updates my app with a new version when I upload to the appstore, will the new version overwrite the files in the DirInternal folder?

 

[margret]

No, the update will not overwrite files unless your code copies a file over top of another file. It will replace any items in the assets folder, etc. As long as your own code does not write over any current files you should be good to go.

 

[andymc]

Great, thanks for the quick response

 

[NeoTechni]

It will however delete your external files on some devices running 2.2

I recommend including the option to change which directory you store settings in on the SD Card, if you use the SD card at all

 

[Erel]

It will however delete your external files on some devices running 2.2

The problem is with File.DirDefaultExternal. It is a bug on some 2.2 devices.

 

[enrico]

In the android 2.2 emulator I have this problem.
Database is overwritten reinstalling or upgrading the app.
I thought that it could be the problem with File.DirDefaultExternal, but changing to File.DirInternal its the same.

 

[Erel]

Make sure that it is not your code that overwrites the database.

 

[enrico]

 If FirstTime Then   
        If File.Exists(DBFileDir, DBUserData) = False Then
            DBFileDir = DBUtils.CopyDBFromAssets(DBUserData)
        End If
End If

With other android versions I don't have the problem

 

[Erel]

Note that you do not need to call File.Exists here as it is done internally in CopyDBFromAssets.

It might be a bug in your device. The internal folder should not be deleted during installation.