how can i show 2 intro views when the app is launching? - iphone

Question

I know if there is a file named Default.png it shows the image automatically.
but, I want to change the image during it showes.
FYI, I have 2 images Default.png and default2.png.
I want to display default2.png after show Default.png.
I tried followed codes, but it didn't work.
What do I have to do?
-(BOOL) application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
//..................................................................
//self.window bullabulla~
[self performSelectorOnMainThread:#selector(showIntro2View) withObject:nil waitUntilDone:YES];
//[self showIntro2View]; //also tried this, but not work.
[self.window addsubview:tabbarController];
[self.window makeKeyAndVisible];
}
-(void) showIntro2View {
UIImageView *intro2 = [[UIImageView alloc]initwithframe:cgrectmake(0,0,320,460)];
intro2.image = [UIImage imagenamed:#"default2.png"];
[self.window addSubview:intro2];
[self.window bringSubviewToFront:intro2];
[NSThread sleepfortimeinterval:2];
}

Answer 1

In your APP DELEGATE.
Something like this should do the job:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
UIImageView *imageView = [[[UIImageView alloc] initWithFrame:self.window.bounds] autorelease];
UIImage *image = [UIImage imageNamed:#"NAMEOFYOURSPLASHSCREEN.png"];
imageView.image = image;
[self.window addSubview:imageView];
[self.window makeKeyAndVisible];
[self performSelector:#selector(remove1stSplash:) withObject:imageView afterDelay:5];
return YES;
}
- (void)remove1stSplash:(UIImageView *)1stView {
UIImageView *imageView = ...
[self.window addSubview:imageView];
[self performSelector:#selector(remove2ndSplash:) withObject:imageView afterDelay:5];
[1stView removeFromSuperView];
}
- (void)remove2ndSplash:(UIImageView *)2ndView {
[self.window addSubview:.....
[2ndView removeFromSuperView];
}
EDIT:
Link for a sample project:
Two Splash Screen display in iphone

Answer 2

As you may know, you don't have real influence on how long the Default img is displayed. But you know when it shows and hides. It shows only, when the app runs the first time, the app is not in background or has been terminated after a while of not using it.
The first View Controller that is called, should implement viewWillAppear, as it is something like the last method called before the default image hides. There everything is loaded and you can immediately add a subview to the main window.
I'd do it in 2 different methods like showOverrideDefaultImage and hideOverrideDefaultImage. In the show method you add your own View to the appDelegate window and fire a
[self performSelector:#selector(hideOverrideDefaultImage) withObject:nil afterDelay:2];
In the hide method simply remove your view from superview. Therefore you have to have a valid pointer to this object.
that's it. Don't use NSThread.

Answer 3

Do this:
-(void) showIntro2View
{
UIImageView *intro2 = [[UIImageView alloc]initwithframe:cgrectmake(0,0,320,460)];
intro2.image = [UIImage imagenamed:#"default2.png"];
intro2.animationImages = [NSArray arrayWithObjects:
[UIImage imageNamed:#"Default.png"],
[UIImage imageNamed:#"default2.png"], nil];
intro2.animationDuration = 2.0f;
intro2.animationRepeatCount = 0;
[intro2 startAnimating];
[self.window addSubview:intro2];
[self.window bringSubviewToFront:intro2];
[NSThread sleepfortimeinterval:2];
}