"[[UIApplication sharedApplication] statusBarOrientation]; gives wrong value in the first call" - ipad

Question

I'm working on an iPad app that start with a splash screen and then moves to the login screen. My app should support all the orientation, and iOS 4.3 and later. To do that, I added the four orientations in the plist, and the following code in the app delegate:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
[self.window makeKeyAndVisible];
// Override point for customization after application launch
SplashViewController *aController = [[SplashViewController alloc] initWithNibName:#"SplashView" bundle:nil];
self.mainViewController = aController;
[aController release];
mainViewController.view.frame = [UIScreen mainScreen].bounds;// no effect
[window setFrame:[[UIScreen mainScreen] bounds]]; //no effect
//[window addSubview:[mainViewController view]];
[window setRootViewController:mainViewController];
return YES;
}
- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window{
return UIInterfaceOrientationMaskAll;
}
In the splash screen
- (void) loadView {
[super loadView];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(orientationChanged) name:#"UIDeviceOrientationDidChangeNotification" object:nil];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return YES;
}
- (BOOL)shouldAutorotate{
return YES;
}
-(NSUInteger)supportedInterfaceOrientations
{
return UIInterfaceOrientationMaskAll;
}
- (void) orientationChanged
{
UIInterfaceOrientation interfaceOrientation =[[UIApplication sharedApplication] statusBarOrientation];
if (interfaceOrientation == UIInterfaceOrientationPortrait || interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown)
NSLog(#"Portrait");
else
NSLog(#"Landscape");
}
Here I get the correct orientation but when rotating, I get an inverted result, I get landscape for portrait and portrait for landscape. I tried to convert the code like this:
- (void) orientationChanged
{
UIInterfaceOrientation interfaceOrientation =[[UIApplication sharedApplication] statusBarOrientation];
if (interfaceOrientation == UIInterfaceOrientationPortrait || interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown)
NSLog(#"Landscape");
else
NSLog(#"Portrait");
}
I get the first result wrong, after that the result is correct. can you help?
note that I have put some uielement to test and the test come with the same result.
Thank you

Answer 1

I managed to solve this matter after two days of searching and testing, none of the answers in the forum was complete, and here is how I solved:
//this for the orientation
- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
[super willRotateToInterfaceOrientation:toInterfaceOrientation duration:duration];
[self orientationChanged];
}
// here is the tricky thing, when startup you should have a special function for the orientation other than the orientationchanged method, and must be called here in viewDidAppear, otherwise it won't work
-(void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
[self StartUpOrientation];
}
#pragma mark -
#pragma mark Orientation Methods
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return YES;
}
- (BOOL)shouldAutorotate {
return YES;
}
-(NSUInteger)supportedInterfaceOrientations {
return UIInterfaceOrientationMaskAll;
}
- (void) orientationChanged {
UIInterfaceOrientation interfaceOrientation =[[UIApplication sharedApplication] statusBarOrientation];
if (interfaceOrientation != UIInterfaceOrientationLandscapeLeft && interfaceOrientation != UIInterfaceOrientationLandscapeRight) {
[self.view setBounds:CGRectMake(0, 0, 1024, 748)];
// your code here
}
else {
[self.view setBounds:CGRectMake(0, 0,768,1004)];
//your code here
}
}
- (void) StartUpOrientation {
UIInterfaceOrientation interfaceOrientation =[[UIApplication sharedApplication] statusBarOrientation];
if (interfaceOrientation != UIInterfaceOrientationLandscapeLeft && interfaceOrientation != UIInterfaceOrientationLandscapeRight) {
[self.view setBounds:CGRectMake(0, 0,768,1004)];
// your code here
}
else {
[self.view setBounds:CGRectMake(0, 0, 1024, 748)];
// your code here
}
}
hope it will help someone someday