Re: iOS4: UI Update on Background
Re: iOS4: UI Update on Background
- Subject: Re: iOS4: UI Update on Background
- From: Scott Anguish <email@hidden>
- Date: Fri, 25 Jun 2010 03:04:50 -0400
On Jun 25, 2010, at 12:07 AM, Angelica Grace Tanchico wrote:
>
> Hello,
>
>
> Based on iPhone Application Programming Guide document:
>
> "Avoid updating your windows and views. While in the background, your application’s windows and views are not visible, so you should not try to update them. Although creating and manipulating window and view objects in the background will not cause your application to be terminated, this work should be postponed until your application moves to the foreground."
>
> Can iOS4 make a suspended task come to foreground when a trigger occur? For example, in a voip app, an incoming call is received while the app is in background, can it make the voip app (currently in the background) into foreground (making the current loaded app suspended to background)? This way, any update on the windows or views can be done immediately (since the app will be forced to be loaded into foreground). Or will it like be on Push service that only notification can be shown? What can be the best way to implement when this scenario happens?
>
As a user, I’d be upset if anything more than a notification came up. I might be in the middle of something and willing to ignore calls from some people.
I think this type of situation (switching in without user interaction) should be covered in the iPhone HIG. If it isn’t, a bug should be filed. Guidance here would be useful to maintain user sanity and application continuity.
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden