I'm not sure what you mean by option 2 -- an application should pretty much never create a dialog that is not owned by an activity. It needs to be associated with an owning activity to be properly Z-ordered and otherwise managed with other apps/activities.
If you are talking about the difference between using onCreateDialog() vs. manually calling new Dialog() to display a dialog on the activity, well in the second case your activity just need to take care of all of the management of the dialog without really much help from the system: in particular, make sure that you properly save and restore its state as your activity's onSaveInstanceState() is called and you later receive that state in onCreate(). On Mon, Oct 5, 2009 at 10:34 PM, Android Development <[email protected]>wrote: > Hello, > I have a requirement for showing dialogs in my application. Alert dialogs > fulfill by needs for now. > > I wish to discuss..and conceptually understand in the process, the exact > relationship between the Activity that is being displayed at a given point > of time...and the Dialog that pops up on the screen. > > The Android documentation provides us with 2 options regarding this: > > 1. To bind the dialog with the activity, making the current activity the > 'owner' of this dialog for managing its state. In this case, we create the > Dialog in the onCreateDialog callback. > > 2. To create a dialog 'outside' of the activity's context, where the > activity is no longer the owner of this dialog. > > I wish to understand what extra liabilities will the developer face if I > follow Option # 2? > > My requirement is for option 2 above. I wish to display a dialog for an > incoming call. However, the user may be at any 'page' (activity) of my > application when the call is received. Hence, i cannot predict the activity > that would be displaying at that instant, when i need to display the dialog > for the incoming call. > > My questions are as follows: > > a) Who manages the Dialog state in case of Option 2 and how ? > > b) What if the user flips the screen when the dialog is being displayed by > following Option 2 above ? > > c) Can any user defined object (Eg: CallManager in my case) be assigned the > owner of the Dialog being displayed ? > > Any insight/answers are very much appreciated.... > > Thanks for the help > > Best Regards > > AD. > > > > -- 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 -~----------~----~----~----~------~----~------~--~---
