On 25 August 2010 08:22, Android Developer <[email protected]> wrote: > I have a pre-installed application on device, when user upgrades > application on pre-installed application, i want to show alert > something similar change log when user opens the application. In pre- > installed application, it's not storing any version specific > information.Is there any way to recognize user is upgraded from the > pre-installed application?
Why do you even need to bother what version user upgraded from? The simpliest approach could be i.e. to store in app preferences app versionCode. On launch, check if that prefs value exists. if it does, check if value is lower than your versionCode, if it is, user upgraded => show changelog. If there's no prefs entry => show changelog as it is definitely old code which did not store such entry. Afterall store current versionCode so on next launch you won't show changelog as versionCodes would be equal. -- 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
