Allow autorotation on just one view controller - objective-c

Question

In my project I have allowed only portrait rotation, but for one ViewController I would like to enable also landscape. I'm presenting this ViewController as ModalViewController, I've tried using methods - (BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation) interfaceOrientation or iOS 6 methods like -(NSUInteger) supportedInterfaceOrientations but nothing actually worked. The view didn't rotate although those methods got called.
After this I've tried to rotate it by myslef with listening to those notifications :
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(didRotate:)
name:UIDeviceOrientationDidChangeNotification
object:nil];
but even though I was able to manually rotate the view in method didRotate: it's very messy and I can't rotate the StatusBar.
I would really like to use standard methods like shouldAutorotateToInterfaceOrientation, but I don't know how. Anyone?

Answer 1

Add this in your app delegate.m
# pragma mark - Rotation
- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window
{
if ([self.window.rootViewController isKindOfClass:[MVYSideMenuController class]]) {
// Get topmost/visible view controller
UIViewController *currentViewController = [self.window.rootViewController.childViewControllers lastObject];
// Check whether it implements a dummy methods called canRotate
if ([currentViewController respondsToSelector:#selector(canRotate)]) {
// Unlock landscape view orientations for this view controller
return UIInterfaceOrientationMaskAllButUpsideDown;
}
}
// Only allow portrait (standard behaviour)
return UIInterfaceOrientationMaskPortrait;
}
-(void)canRotate
{
}
and then add this method
-(void)canRotate
{
// just define the method, no code required here
}
in every ViewController (.m files) where you want to provide rotation. You can also include here -(void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation method to react when the device rotates:
-(void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation];
switch (orientation) {
case 1:
case 2:
//NSLog(#"portrait");
break;
case 3:
case 4:
//NSLog(#"landscape");
break;
default:
//NSLog(#"other");
break;
}
}

Answer 2

Subclass a navigation controller for your screen that requires rotation.
In the .m
// Older versions of iOS (deprecated) if supporting iOS < 5
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation {
return UIInterfaceOrientationIsLandscape(toInterfaceOrientation);
}
// iOS6
- (BOOL)shouldAutorotate {
return YES;
}
// iOS6
- (NSUInteger)supportedInterfaceOrientations {
return UIInterfaceOrientationMaskLandscape;
}
This overrides the rotation methods set in the summary page for iOS 6.
In iOS 6 the view controllers only look to there parent or root controller for rotation methods

Answer 3

can't you just call the shouldAutoRotateToInterfaceOrientation in the viewDidLoad and viewWillAppear like so:
[self shouldAutorotateToInterfaceOrientation];
that should call the method if its in your ViewController

Answer 4

Implement is in all controller and Return on that interfaceOrientation which you need for a specific controller
For All
- (BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation) interfaceOrientation{
return YES;
}
For Landscape
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return ((interfaceOrientation == UIInterfaceOrientationLandscapeLeft) || (interfaceOrientation == UIInterfaceOrientationLandscapeRight));
}
For Portrait
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return ((interfaceOrientation == UIInterfaceOrientationPortrait) || (interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown));
}