How to force my view controller to always open in portrait mode

Question

I have two view controllers embedded in a navigation controller, My first view controller is allowed to rotate whereas my second view controller should always open in portrait mode, For instance even if I am in landscape mode in first view controller I want to open my second in portrait only,

I present the second view controller by pushing segue from first.

Answer 1

You will have to implement shouldAutorotate on the second VC

Just before you present the second VC (portrait) call

 if([UIDevice currentDevice].orientation == UIDeviceOrientationLandscapeLeft || [UIDevice currentDevice].orientation == UIDeviceOrientationLandscapeRight) {
        [[UIDevice currentDevice] setValue:[NSNumber numberWithInteger: UIInterfaceOrientationPortrait] forKey:@"orientation"];
 }

Answer 2

You can use this method in ur AppDelegate Class for and maintain with bool var

-(NSUInteger) application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window {
    if(self.isDisplayInPoratrait){ 
        return UIInterfaceOrientationMaskPortrait;
    else
        // return ur required orientation
}

self.isDisplayInPoratrait is bool variable declared in AppDelagate set this variable yes in class which u want to present in portrait. Place this method in class which u wan to present in portrait

-(BOOL)shouldAutorotate {
   return NO;
}

-(UIInterfaceOrientationMask)supportedInterfaceOrientations {
   return  UIInterfaceOrientationMaskPortrait;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {  
   return UIInterfaceOrientationLandscapeLeft;
}

Answer 3

Solution 1 : create a custom UINavigationController subclass and override these methods like this :

@interface LockedNavigationViewController ()

@end

@implementation LockedNavigationViewController

-(BOOL)shouldAutorotate {
    return UIInterfaceOrientationMaskPortrait;
}

#if __IPHONE_OS_VERSION_MAX_ALLOWED < 90000
- (NSUInteger)supportedInterfaceOrientations
#else
- (UIInterfaceOrientationMask)supportedInterfaceOrientations
#endif
{
    return UIInterfaceOrientationMaskPortrait;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
    return UIInterfaceOrientationPortrait;
}

@end

Answer 4

Select your project - > general, then follow the above image.