Cannot switch back from my landscape view to a portrait view

[Luc]

Hello,

I am working on an app (my first one), which is basically a TabBar app.
To be more precise there are:
- a login view controller
- a tab bar controller (when login is done)
- a landscape view controller that is used when the first itel of the TabBar is switch from Protrait to Landscape.

So, when I am in the first tab, I need to be able to move to landscape view to display some other data. In my tab bar controller, I have implemented those methods:

- (BOOL)shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation)interfaceOrientation
{
if([self selectedIndex] == 0)
return YES;

return NO;
}


- (void)willRotateToInterfaceOrientation:
(UIInterfaceOrientation)toInterfaceOrientation durationNSTimeInterval)duration
{
[super willRotateToInterfaceOrientation:toInterfaceOrient ation duration:duration];

// Get AppDelegate
MyAppDelegate *delegate = [[UIApplication sharedApplication] delegate];

if (toInterfaceOrientation == UIInterfaceOrientationLandscapeRight)
{
// Remove TabBarView and add graph Landscape View
[self.view removeFromSuperview];
[delegate setSubViewLandscapeViewController];
}
}

In the delegate, I have implemented the setSubViewLandscapeViewController and the setSubViewTabBarController to switch between the different View controller:

- (void)setSubViewTabBarViewController {
[window addSubview:[tabBarController view]];
}

- (void)setSubViewGraphLandscapeViewController {
[window addSubview:[landscapeViewController view]];
}

I want the landscapeViewController to display only in landscape mode, I have then (in my landscapeViewController):

- (void)viewWillAppearBOOL)animated {
[[UIDevice currentDevice] setOrientation:UIInterfaceOrientationLandscapeRigh t];
}
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:
(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationLandscapeRight);
}
- (void)willRotateToInterfaceOrientationUIInterfac eOrientation)toInterfaceOrientation durationNSTimeInterval)duration {

NSLog(@"willRotateToInterfaceOrientation");
}

A part of this works fine, I mean the switch from portrait to landscape is ok (when I am in the first tab), the tabbarcontroller is remove from the SuperView and the landscape view is added as a subview instead.

The thing is... I do not know how to switch back to portrait mode (and then load the previous controller, the tabBar one using the setSubViewTabBarViewController of my delegate). It seems none of the willRotateToOrientation, willRotateFromOrientation, .. are triggered when I actually move the device from the landscape view...

In short, when I am in the landscape view I do not know what to do to move back to the tabbar view... I am kind of stuck in the landscape view once I am in this one.

Thanks a lot for your help,

Luc

[mr tickle]

hi luc

i checked some of the code out, im on holiday until saturday at the moment, on a beach :-)

some things that i can tell you that make the whole process of managing and controlling any app in iphone/ipad is this

1. to access views, i notice that you use bracket instead of dot access, you dont need to, a view can be accessed like this

[self.view addSubview:mycontroller.view];

sometimes that makes things easier to read, i only use bracket access on things like arrays, method calls ( [ myclass mymethod] )

2. generally keep away from the appdelegate when you create an app, obviously this is not a necesity that you need to follow, but i find that it helps a lot, the delegate can be used to initialize the project or app you create, for example, because the objective element of xcode sdk is so flexible, you can have a structure like this

myappdelegate
>> maincontroller > view
>>>> myportraitcontroller > view
>>>> mylandscapecontroller > view

this means that your main controller has dominance over all classes directly under it, so in the willrotatetointerfaceorientation, you can tell the different controllers to do things, or alternatively, do things directly in the maincontroller

im going to take a closer look at the problem and get back to you.

Paul