Sounds to me like the cleanest approach would be to rewrite it so that each tab is a View instead of an Activity. Combine all the logic of activities A, B, and C into the TabActivity. That way you have a central location for your data and you don't have to read the database to update the other tab.
TabActivity really is designed for putting views in the tabs and only has minimal support for putting activities in there... According to Dianne (one of the Android Framework engineers) support for activities is there from the Android 1.1 days but then they shifted gears and changed the way things were set up and it never got finished. On Thu, Feb 24, 2011 at 12:39 PM, Danny S. <[email protected]>wrote: > Hi, > > I have a TabActivity with Activity "B" on Tab1 and Activity "C" on > Tab2. Both extends Activity "A" where I do the most. They use the same > kind of data. Activity B is using data thats state is "active" and > Activity C is using data in state "finished". So far so good... > > Now I have the possibility to finish an active item or to reactivate a > finished item. When I do this, the item will removed from the > ListAdapter of the view and I refresh my view. The items where updated > in the database too. Everything works fine, but now my concern: > > When the state of data changes it should be displayed in the other > activity (B <-> C). Is it possible to refresh my data without fetching > all of them from database? Now I check with each TabChange if the > cursor size of my select differs from my list adapters size. If yes, > then clear the list adapter and rebuild it completely. I think this is > not a "clean" efficient way. > > My aim was to fetch all data at onCreate() and then work with the list > adapter so be efficient and save battery where I can. > > I've got an idea in this moment: there is an activity manager. maybe I > can fetch activity C from activity B and call a method with the given > row ids to make a database refresh for activity C with every state > change!? > > Hope someone can help and discuss ;-)! > > -Danny S. > > -- > 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 -- 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
