As you all know, one of the most important new features of iOS 4 is multitasking. I just found out that the scaffold and demo projects I provided with Sparrow 0.9 had problems with multitasking — and this might be similar in your existing Sparrow projects.
Fortunately, the fix is extremely simple. All you have to do is open your application delegate (ApplicationDelegate.m) and update the contents of the following methods:
- (void)applicationWillResignActive:(UIApplication *)application
{
[sparrowView stop];
}
- (void)applicationDidBecomeActive:(UIApplication *)application
{
[sparrowView start];
}
That’s it! Now your app should support multitasking.
I updated the Sparrow download package, so that the demo and scaffold projects use this code, too. I also included a small update of the atlas generator, so if you are using it, you can fetch that, too.
But these methods are called earlier, then the above you mentioned, on iOS4
applicationDidEnterBackground
applicationWillEnterForeground
when you arrive at
applicationWillResignActive:
there should be no OGL calls. So to stop Sparrow
in this method might be to late!
Do it in
applicationDidEnterBackground -> Sparrow stop
applicationWillEnterForeground -> Sparrow start
Great framework! Thanks!
Oh, I did a BIG mistake.
Only applicationWillEnterForeground is called before
applicationDidBecomeActive!
So to stop sparrow it’s ok to do that in applicationWillResignActive
also you need stop SPView before dealloc if you use few SPView in your project