Animated UIPickerView not rotating in landscape mode - iphone

Question

I have a UIPickerView that animates up and down in a UITableViewController. I adapted an example from apple (DateCell). The UIPickerView is created programmatically, no nib files.
In Portrait mode everything looks nice. When I rotate the simulator (I not testing on the device), the UITableView rotates well, but the picker remains were it was. I read tons of threads about that topic and many developers seem to have problems with pickers behaving weird in landscape mode but at least their pickers rotate. I made a subclass of UIPickerView as described in this link: http://www.llamagraphics.com/developer/using-uidatepicker-landscape-mode, but it didn't help for the rotation issue.
I tried to rotate the picker with a transform but it looked very weird, like broken.
I'm suspecting that the problem is that I'm using the picker inside of a UITableViewController, and so I add it as a subview of self.view.window. If I try to add the picker as a subview of self.view, only a white frame (without any picker) appears.
Any suggestions?
The initialization code in the UITableViewController subclass:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if (self.pickerView.superview == nil)
{
//Initialization code
UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
CGRect initFrame = orientation == UIInterfaceOrientationPortrait ? CGRectMake(0, 0, 320, 200) : CGRectMake(0, 0, 480, 160);
self.pickerView = [[RotatingUIPickerView alloc] initWithFrame:initFrame];
[self.pickerView setDelegate:self];
[self.pickerView setShowsSelectionIndicator:YES];
[self.pickerView setAutoresizingMask:UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleTopMargin];
[self.view.window addSubview:self.pickerView];
// compute the start frame
CGRect screenRect = [[UIScreen mainScreen] applicationFrame];
CGSize pickerSize = [self.pickerView sizeThatFits:CGSizeZero];
CGRect startRect = CGRectMake(0.0,
screenRect.origin.y + screenRect.size.height,
pickerSize.width, pickerSize.height);
[self.pickerView setFrame:startRect];
// compute the end frame
CGRect pickerRect = CGRectMake(0.0,
screenRect.origin.y + screenRect.size.height - pickerSize.height,
pickerSize.width,
pickerSize.height);
// start the slide up animation
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.3];
// we need to perform some post operations after the animation is complete
[UIView setAnimationDelegate:self];
[self.pickerView setFrame:pickerRect];
[UIView commitAnimations];
}
}
Implementation of UIPicker subclass as described on the link above:
- (id)initWithFrame:(CGRect)frame
{
if (self == [super initWithFrame:frame])
{
for (UIView * subview in self.subviews)
{
[subview setFrame:self.bounds];
}
}
return self;
}
- (id) initWithCoder:(NSCoder *)aDecoder
{
if (self == [super initWithCoder: aDecoder])
{
for (UIView * subview in self.subviews)
{
[subview setFrame:self.bounds];
}
}
return self;
}

Answer 1

By executing:
[self.view.window addSubview:self.pickerView];
you are adding pickerView as a subview of your UIWindow. I don't know how the main UIWindow can be rotated, if it can be.
When you are adding pickerView to the view
[self.view addSubview:self.pickerView];
you get problems due to the view being a UITableView.
What I suggest is adding pickerView to some intermediate UIView, added as subview to UIWindow and to which you add the UITableView. This intermediate UIView would also have a UIViewController associated to it so that shouldAutorotateToInterfaceOrientation can return the proper value to have auto rotation working.