Loading Alternative UITabBarController for iPhone5 support - iphone

Question

I have to add support for iPhone5 to my app. Currently the appdelegate uses a nib that is a UITabBarController, and code like this. Works fine.
[window addSubview:rootController.view];
[window makeKeyAndVisible];
rootController is an instance of UITabBarController.
So I have created a new nib for iPhone5 and changed the code to...
if ([self IsTall])
rootController = [[[UITabBarController alloc] initWithNibName:#"MainWindow_5" bundle:nil] autorelease];
else
rootController = [[[UITabBarController alloc] initWithNibName:#"MainWindow" bundle:nil] autorelease];
[window addSubview:rootController.view];
[window makeKeyAndVisible];
But, the screen is blank with this code, like the nib is not loading.
If I try this I get the correct nibs loading and displaying on the screen but the "MORE" button is not shown and only the first 4 tabs are shown (there are 7 tabs in the tabBarController
if ([self IsTall])
rootController = [[rootController initWithNibName:#"MainWindow_5" bundle:nil] autorelease];
else
rootController = [[rootController initWithNibName:#"MainWindow" bundle:nil] autorelease];
[window addSubview:rootController.view];
[window makeKeyAndVisible];
I also tried...
if ([self IsTall])
[[NSBundle mainBundle] loadNibNamed:#"MainWindow_5" owner:rootController options:nil];
else
[[NSBundle mainBundle] loadNibNamed:#"MainWindow" owner:rootController options:nil];
But this causes a crash on the tab buttons for the nib not declared in the plist under Main
"nib file base name" setting.
Any help very much greatly appreciated. This has stumped me for a couple of days now.
Kind Regards
Rob.

Answer 1

Miscellaneous thoughts:
iPhone 5 is iOS 6. Was your app working under iOS 6 before? If not, get it working for iOS 6 first. My apps came up blank when linked against iOS 6 even if no other changes were made. That's because view controllers work in a whole different way. So step one is to get the simple of act of launch ironed out for iOS 6. This is particularly true if you are launching into landscape; everything is totally changed in this regard.
Do not add the subview yourself. Just set the window's rootViewController. It adds the subview for you.
On the whole you should NOT be loading a different nib in any case. You should be using layout to lay out the same interface in such a way that it doesn't matter whether the screen is tall or not.
Hope something in there will help...
Your second code is totally illegal. Never never never say "init" except in the very same line where you just said "alloc" (except in an initializer, of course).

Answer 2

Here is the method I use
+ (BOOL)isPad{
BOOL result = NO;
if ([[UIDevice currentDevice] respondsToSelector:#selector(userInterfaceIdiom)]){
result = [[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad;
}
return result;
}
+ (BOOL) isPhone{
BOOL result = NO;
static NSString *model;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
model = [UIDevice currentDevice].model;
});
if ([model hasPrefix:#"iPhone"]){
result = YES;
}
return result;
}
+ (BOOL)isWidescreen{
BOOL result = NO;
static CGFloat ratio;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
CGSize size = [UIScreen mainScreen].bounds.size;
CGFloat numerator = MAX(size.height, size.width);
CGFloat denominator = MIN(size.height, size.width);
ratio = numerator / denominator;
});
if (ratio > 1.77 && ratio < 1.78){
result = YES;
}
return result;
}
I then have Define statements to make them easier to reach
#define IS_IPAD() [StaticContainer isPad]
#define IS_WIDESCREEN() [StaticContainer isWidescreen]
#define IS_IPHONE() [StaticContainer isPhone]
I also have a UIViewController category
#implementation UIViewController (initHelpers)
- (id) initClassDevice{
NSString *device = #"";
if (IS_IPAD()) {
device = #"iPad";
}
else if (IS_WIDESCREEN()){
device = #"iPhone5";
}
else {
device = #"iPhone";
}
NSString *nibName = [NSString stringWithFormat:#"%#_%#",[self class],device];
self = [self initWithNibName:nibName bundle:nil];
return self;
}
#end
You will need to have a nib file for each one that has the different items in it. and they need to be connected to everything separately.
Mine currently only separates iphone and ipad so for a view controller i would have
MyMagicViewController.h/MyMagicViewController.m
and for the xib files i would have
MyMagicViewController_iPad.xib, MyMagicViewController_iPhone5.xib and MyMagicViewController_iPhone.xib
the important thing is to match the name of the xib file with the call to initWithNibName:
Also Another thing to think of. is the View you are initializing needs to be the same size as the View it is going into .
view.frame = superView.bounds;
then it will fit properly

Answer 3

for me adding Default-568h#2x.png to my project resolved it.