CODEWITHSUNDEEP
ios
Claudio
Claudio

Reputation: 2037

Objective-C - Rotation inside modal even shouldAutoRotate = false

I have a view (InfoVC) that is rotating even if I set shouldAutoRotate to false. This is the code that is opening the view (inside a Modal)

- (IBAction)presentInfoVC:(id)sender{
    InfoVC *infoVC = [[InfoVC alloc] init];
    UINavigationController *infoNVC = [[UINavigationController alloc] initWithRootViewController:infoVC];

    UIImage *img =[UIImage imageNamed:@"image.png"];
    UIImageView *imgView = [[UIImageView alloc] initWithImage:img];



    infoNVC.navigationBar.tintColor = [UIColor lightGrayColor];
    [infoNVC.navigationBar.topItem setTitleView:imgView];
    [imgView release];

    [self presentModalViewController:infoNVC animated:YES];

    [infoVC release];

}

and the code that was supposed to avoid this view to rotate (inside InfoVC.m):

- (BOOL)shouldAutorotate
{
    return FALSE;    
}

What is wrong?

Regards!

Upvotes: 1

Views: 320

Answers (2)

WDUK
WDUK

Reputation: 19030

Instead of creating a subclass of UINavigationController, you could use a category to perform the same task (if it's required for all instances of UINavigationController). It's a lot more lightweight than the subclassing method, and doesn't require you to swap class types for pre-existing UINavigationControllers.

To do so is as follows:

UINavigationController+NoRotate.h

@interface UINavigationController(NoRotate) 
- (BOOL)shouldAutorotate;
@end

UINavigationController_NoRotate.m

#import "UINavigationController+NoRotate.h"

@implementation UINavigationController (NoRotate)

- (BOOL)shouldAutorotate
{
    return NO;
}

@end

From then on, if you need a UINavigationController to no longer rotate, simply import UINavigationController+NoRotate.h where required. As category overrides will affect all instances of the class, if you need this behaviour for only a few cases, then you will need to subclass UINavigationController, and override -(BOOL)shouldAutorotate.

Upvotes: 2

Claudio
Claudio

Reputation: 2037

I got the answer. I figured out that I was supposed to implement shoulAutorotate in the UINavigationController, not in UIViewController. I created another class (subclass of UINavigationController), implemented shouldAutorotate like in this view and I used it replacing UINavigationController.

Code:

UINavigationControllerNotRotate.h

#import <UIKit/UIKit.h>

@interface UINavigationControllerNotRotate : UINavigationController

@end

UINavigationControllerNotRotate.m

#import "UINavigationControllerNotRotate.h"

@interface UINavigationControllerNotRotate ()

@end

@implementation UINavigationControllerNotRotate

- (BOOL)shouldAutorotate
{
    return FALSE;
}

@end

New code:

- (IBAction)presentInfoVC:(id)sender{

    InfoVC *infoVC = [[InfoVC alloc] init];
    UINavigationControllerNotRotate *infoNVC = [[UINavigationControllerNotRotate alloc] initWithRootViewController:infoVC];

    UIImage *img =[UIImage imageNamed:@"logo_vejasp_topbar.png"];
    UIImageView *imgView = [[UIImageView alloc] initWithImage:img];


    infoNVC.navigationBar.tintColor = [UIColor lightGrayColor];
    [infoNVC.navigationBar.topItem setTitleView:imgView];
    [imgView release];

    [self presentModalViewController:infoNVC animated:YES];

    [infoVC release];

}

This worked fine for me. Thanks for everybody who tried to help!

Upvotes: 0

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