force landscape ios 7 - ios

Question

I've tried to following methods to force landscape on one my views:
- (NSUInteger)supportedInterfaceOrientations {
return UIInterfaceOrientationMaskLandscape;
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
return UIInterfaceOrientationLandscapeLeft;
}
- (BOOL)shouldAutorotate{
return YES;
}
Neither did work. Note that I'm testing on the simulator and on an iPad.
Thanks

Answer 1

Here is how I forced one of my views to be Landscape using NavigationViewController:
Implemented this answer: https://stackoverflow.com/a/12662433/2394787
Imported message in the View controller: objc/message.h
Added this line of code in the viewDidLoad method:
objc_msgSend([UIDevice currentDevice], #selector(setOrientation:), UIInterfaceOrientationLandscapeLeft);
Hope it helps someone.

Answer 2

The accepted answer doesn't seem to work on iOS 7.1.2. (It works on the simulator but does not work while running on a device.)
This seems to work though:
[[UIDevice currentDevice] setValue:[NSNumber numberWithInteger:UIInterfaceOrientationPortrait] forKey:#"orientation"];
[[UIDevice currentDevice] setValue:[NSNumber numberWithInteger:UIInterfaceOrientationLandscapeLeft] forKey:#"orientation"];

Answer 3

int shouldShowInLandscape = 0;
-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(forceToLandscape:)
name:#"yourNameNotification"
object:nil];
}
-(NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window
{
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
{
return UIInterfaceOrientationMaskLandscapeLeft;
} else {
if(shouldShowInLandscape)
{
return UIInterfaceOrientationMaskLandscape;
}
return UIInterfaceOrientationMaskPortrait;
}
}
-(void) forceToLandscape:(NSNotification*) theNot
{
shouldShowInLandscape = [[theNot object] intValue];
}
// from the UIViewController
- (void)viewDidLoad
{
[super viewDidLoad];
[[NSNotificationCenter defaultCenter]
postNotificationName:#"yourNameNotification"
object:[NSString stringWithFormat:#"1"]];
}
-(void) viewDidDisappear:(BOOL)animated
{
[[NSNotificationCenter defaultCenter]
postNotificationName:#"yourNameNotification"
object:[NSString stringWithFormat:#"0"]];
}
// remove you notificationCenter