trying to remove a subview - iphone

Question

I have 2 subviews on the stage (a splash screen, and the main screen) once the splash screen finishes playing its audio it calls a function called -(void)audioComplete which is suppose to fade out the splash screen, revealing the main screen. I can't seem to get that working.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
[self.window addSubview:splashController.view];
[self.window addSubview:rootController.view];
[self.window makeKeyAndVisible];
return YES;
}
-(void)audioComplete{
NSLog(#"REMOVE FROM STAGE");
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.5];
[UIView setAnimationDelegate:splashController.view];
splashController.view.alpha = 0.0;
[UIView commitAnimations];
[splashController release];
}
If I add NSLog(#"%#",[splashController.view superview]); in the audioComplete function I get (null), but not when I add it to the didFinishLaunchingWithOptions function.

Answer 1

Apple highly recommends against using splash screens. Instead, you should use an image called 'Default.png' in the root directory. This will get displayed while the application is launching and make it appear that your application is faster than it actually is. Apple could potentially reject your submission to the app store if you create your own loading screen.

Answer 2

Could be one of two things:
1) Seems like your rootControllerView is being added on top of the splashControllerView.
Maybe your animation is happening but you can't see it as your rootControllerView is blocking it.
Try reversing your order of addSubview.
2) Don't release your splash view in the same method you're using for animation. Wait for the animation to finish before releasing your view. You can do this by:
-(void)audioComplete
{
NSLog(#"REMOVE FROM STAGE");
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.5];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidFinishSelector:#selector(releaseView)];
splashController.view.alpha = 0.0;
[UIView commitAnimations];
}
-(void)releaseView
{
[splashController release];
}
Also, as a best practice for memory management, don't release splashControllerView directly.
What I do is release a view immediately after adding it as a subview (adding a subview increases it's retain count).
When I'm done with the subview, I simply call [subView removeFromSuperView] which reduces the retain count and makes it zero.
Simply put:
UIView *view = [[UIView alloc] init]; //retain count = 1
[self.view addSubview:view]; //retain count = 2
[view release]; //retain count = 1
//do stuff with the view
[view removeFromSuperview]; //retain count = 0;

Answer 3

I don't really see your question, because in your didFinishLaunchingWithOptions you're adding your view and it's really there! So you will receive an answer every time you call NSLog(#"%#",[splashController.view superview]); but in audioComplete you release your subView and it's away... After this you can't get access to the superview, because - you're subView is released...
I would use this:
-(void)audioComplete{
NSLog(#"REMOVE FROM STAGE");
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.5];
[UIView setAnimationDelegate:splashController.view];
splashController.view.alpha = 0.0;
[UIView commitAnimations];
[splashController.view removeFromSuperview];
}
You'll get the same thing again, but you're subView is still there if you need something later.

Answer 4

For Fade in and Fade out images between splash and mainscreen. i suggest you could trying having two image in rootviewcontroller. made the fade in and fadeout animation between two UIIMageViews......
for fade in read out this sample tuts:
http://iosdevelopertips.com/user-interface/fade-transition-fade-images-in-and-out.html
during the animation, u can complete your audio streams