Data/files erase on installation

[junglejet]

I have a Galaxy I5500 as development device. Since upgrade from Android 2.1 to 2.2 it erases all files in the DirDefaultExternal folder (Android/data/<app>/files) on every new installation.

Is there any reason for this? Can I avoid this by an IDE setting?

Thanks
Andy

 

[HotShoe]

I'd guess that it has something to do with the key signature you are using. By default Android should replace the app with the new one and retain data. If a different key is used, it will re-install and wipe data.

--- Jem

 

[Erel]

File.DirDefaultExternal should only be deleted when the user uninstalls your program. Unfortunately on some Android 2.2 devices this folder also gets deleted when doing a reinstall / update. This is a bug in one of the early versions of Android 2.2 (froyo).

The only workaround is to use a different folder.

 

[junglejet]

Thank you, Erel, this was my guess, too.

I am now on an I9100G with And 2.3.6 and the reinstallationprocedure works fine.

Andy