How to force or disable interface orientation for

Question

I have an app with 9-10 screens. I embedded a UINavigationController into my view controller. I have few view controllers which I want set only portrait orientation: it means that rotating the device should not rotate these view controllers to landscape mode. I have tried the following solutions:

first:

   NSNumber *value = [NSNumber numberWithInt:UIInterfaceOrientationPortrait];
   [[UIDevice currentDevice] setValue:value forKey:@"orientation"];

but screen still rotates to landscape.

Second: I created a custom view controller class as PortraitViewController and added the code below in PortraitViewController.m

@interface PortraitViewController ()
@end

@implementation PortraitViewController
- (BOOL)shouldAutorotate
{
    return YES;
}

- (NSUInteger)supportedInterfaceOrientations
{
    //Here check class name and then return type of orientation
    return UIInterfaceOrientationMaskPortrait;
}
@end

After that I implemented PortraitViewController.h as a base class

#import <UIKit/UIKit.h>
#import "PortraitViewController.h"
@interface Login : PortraitViewController
@end

It does not work at all, still allows view controller to rotate in landscape mode.

Is there any other solution i am using iOS 8 & don't want viewcontroller to rotate in landscape mode?

EDIT: Is it possible to have Landscape orientation only for some view controllers, and force other view controllers orientation to stick to Portrait?

Answer 1

Try to subclass the UINavigationController you are using because the default UINavigationController is not forwarding the shouldAutorotate method to you viewcontroller.

Implement the following method in your UINavigationController subclass

- (BOOL)shouldAutorotate
{
    return [self.visibleViewController shouldAutorotate];
}

Now the UINavigationController forwards the method call to its current visible UIViewController so you need to implement shouldAutorotate there individually to get your desired effect.

Answer 2

If you want to temporarily disable automatic rotation, avoid manipulating the orientation masks to do this. Instead, override the shouldAutorotate method on the initial view controller. This method is called before performing any autorotation. If it returns NO, then the rotation is suppressed.

So you need to subclass 'UINavigationController', implement shouldAutorotate and use your navigation controller class in your storyboard.

- (BOOL)shouldAutorotate

{

id currentViewController = self.topViewController;


 if ([currentViewController isKindOfClass:[DetailViewController class]])
    return NO;

return YES;

}

an alternate approach can be found on

http://www.sebastianborggrewe.de/only-make-one-single-view-controller-rotate/

Answer 3

Create a category on the UINavigationController and override supportedInterfaceOrientations

#import "UINavigationController+Orientation.h"

 @implementation UINavigationController (Orientation)

-(NSUInteger)supportedInterfaceOrientations
{
   return [self.topViewController supportedInterfaceOrientations];
}

-(BOOL)shouldAutorotate
 {
    return YES;
 }

@end  

When you Embedded UINavigationController, Containers don't ask their children whether to rotate or not

Answer 4

Tr this in your view controller

- (BOOL)shouldAutorotate{
    return NO;
}

- (NSUInteger)supportedInterfaceOrientations{
    return UIInterfaceOrientationPortrait |
           UIInterfaceOrientationPortraitUpsideDown;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation{
    return UIInterfaceOrientationPortrait;
}

Answer 5

1) Make a bool variable in your AppDelegate.

2) Then copy & paste below code in AppDelegate.m (modify it as per your requirement)

-(NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window{NSLog(@"%d", [UIDevice currentDevice].orientation)

if (self.isLandscape == YES) //bool created in first step
{
    return  UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight;
}

return UIInterfaceOrientationMaskPortrait;
}

3) Now copy & paste below code in the viewWillAppear method of the view controller for which you want to force orientation.

[AppDelegate sharedAppDelegate].isLandscape = YES; //bool created in first step
 NSNumber *value1 = [NSNumber numberWithInt:UIInterfaceOrientationLandscapeRight]; //change the orientation as per your requirement
[[UIDevice currentDevice] setValue:value1 forKey:@"orientation"];

4) Now before pushing this view controller, you need to set the bool first. So, let's say you want to push ABC view controller

[AppDelegate sharedAppDelegate].isLandscape = YES;
[self.navigationController pushViewController:<ABC view controller instance> animated:NO];

Hope this helps!!

Answer 6

You have to do it manually. All view controllers, in those you do not want to rotate view, implement following method.

- (BOOL)shouldAutorotate
{
    return NO;
}