You can use this to efficiently propagate instantiated objects across these instances:
http://developer.android.com/reference/android/app/Activity.html#onRetainNonConfigurationInstance() Do make sure that none of the objects hold a reference on the current activity/context, or you will cause that to leak. On Thu, Dec 17, 2009 at 1:08 PM, TreKing <[email protected]> wrote: > Save your objects to the bundle in onSaveInstanceState and in onCreate() > check if the incoming bundle is null. If it is, load from file, if it's not, > load your saved data from the bundle. > > Honestly though, if you're not really saving state information and loading > from files in onCreate isn't taking that long for you, you're just wasting > time and adding complexity to your app. > > > > ------------------------------------------------------------------------------------------------- > TreKing - Chicago transit tracking app for Android-powered devices > http://sites.google.com/site/rezmobileapps/treking > > > On Wed, Dec 16, 2009 at 1:15 PM, ailinykh <[email protected]> wrote: > >> In my application onCreate method reads some files, creates a bunch of >> objects (Model) and then >> creates visual layout. When an orientation gets changed it reads files >> again. But they are the same. >> There is no need to read them again. Only visual layout needs to be >> recalculated. >> Is there a way to avoid this extra job? >> >> Thank you, >> Andrey >> >> On Dec 15, 12:26 pm, Mark Murphy <[email protected]> wrote: >> > steff wrote: >> > > But my problem is this (at this point my misunderstanding kicks in): >> > > whenever I rotate the device the onCreate(), onStart() etc. methods >> > > are called, causing my app to act as if it just started. >> > >> > Correct. By default, on an orientation change, Android destroys and >> > recreates your activity, to map in the appropriate layout resources and >> > such. >> > >> > -- >> > Mark Murphy (a Commons Guy)http://commonsware.com| >> http://twitter.com/commonsguy >> > >> > _Android Programming Tutorials_ Version 1.0 Available! >> >> -- >> 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]<android-developers%[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]<android-developers%[email protected]> > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- Dianne Hackborn Android framework engineer [email protected] Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. -- 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
