It sounds like you may have installed the app with different signing keys. If you were launching the app on your device through Eclipse and then tried to install from the market then that is most likely the case. Another possibility is that you are using multiple PC's for development and the debug keys are different on each machine. Eclipse by default signs everything with the debug key.
As long as you sign each version of the app with the same key you should have no problem installing new releases. You might need to take care of SQLite database upgrades yourself though if you change the schema. Mike dg On Mar 10, 12:28 pm, Caeser <[email protected]> wrote: > hi, > > How to upgrade Android app without losing data ? e.g. I have a game > which is using some preferences or sqlite data. which is associated > with the android app. If app is already installed on device, it is not > allowing the same app to install again. and one need to uninstall then > reinstall app again. > > so, if one wants to upgrade app with the older data then how will he > be able to do it ? -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
