I have an issue issue with the UINavigationController on the iPad. When the app is started in landscape orientation, popping the top view controller from the navigation controller causes the device orientation to turn into portrait and the view displayed slides down when the view that becomes visible and adjusts to portrait orientation. It makes no difference if I initiate the call or if it's done automatically by the back button.
When the app is started in portrait mode and device is turned into landscape later I don't see the same behavior and everything works fine.
Any pointers to where and what to look for to find the cause or workaround suggestions to prevent this from happening are welcome.
Thank you,
Oz
One of the view controllers in your UINavigationController's view hierarchy is not overriding the shouldAutorotateToInterfaceOrientation: method, which by default only returns YES for UIInterfaceOrientationPortrait – so, when that particular view controller comes to the front, it auto-rotates to an orientation it supports.
You can fix this by finding the offending view controller and adding the code below:
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Overriden to allow any orientation.
return YES;
}
Related
Is it possible to support all orientation for popup (UIAlertController) which pops from the view controller, which is only supporting portrait right now?
Now I have viewcontroller support only portrait but the popup for this viewcontroller not to be landscape.
Help me.
If you have added UIAlertController to the portrait only view controller then i don't think this alert controller only can support all orientations since its added as a child of that view controller so it has to abide the parent.
Whereas if UIAlertController common to Application level then there may be possibilities to support any orientation.
Correct me if my understanding is wrong.
I'm trying to get navigation between views that support landscape or portrait orientations working using a navigation controller and pushViewController (and IOS6+ code) and have a problem where after pushing a landscape view controller onto the navigation controller stack, the view controller view correctly is in landscape but the device is still in portrait orientation. (imagine an arrow pointing left to right on a landscape screen, here it points from down to up on a portrait screen so the dimensions are correct - it's just the device should be in landscape mode so the arrow points left to right - if that makes sense)
I have a portraitViewController and landscapeViewController that my different sub modes use.
Using the iOS 6 method, The two classes overload
-(BOOL)shouldAutorotate;
-(UIInterfaceOrientation)preferredInterfaceOrientationForPresentation;
-(NSUInteger) supportedInterfaceOrientations;
appropriately.
I also have my own derived navigationcontroller that overrrides:
-(BOOL)shouldAutorotate;
-(UIInterfaceOrientation)preferredInterfaceOrientationForPresentation;
-(NSUInteger) supportedInterfaceOrientations;
with the functions returning the same functions of the top view controller (so we're not bound to portrait mode by the top level view controller).
My first problem is that the device doesn't do an orientation refresh when you use pushViewController onto the navigation controller. This is well documented and has been solved up to now by using dismissViewController and presentViewController which forces a device orientation refresh which in turn queries the new view controller about what orientations it supports and switches the device appropriately.
This works but loses transitioning between view controllers (i.e with the new view sliding in from the right of the screen) as the previous view is removed from screen before the next is added and the newly presented view is applied to the entire screen directly.
Because of this, I've been trying to get things working using pushViewController rather than present / dismissViewController. pushViewController works fine when I navigate from portrait to portrait view - the new view slides in nicely - it's when I switch from a portrait to landscape view controller than things break.
Just pushViewController doesn't cause the device to refresh it's orientation and query what the new view would like to use. I've added calls to present / dismissModalViewController before my call to pushViewcontroller to force an orientation check with the new view controller.
* the problem *
This doesn't work however because the view is now in landscape mode but the device is still in portrait mode so the view is at 90 degs to what it should be.
I've tried fixing this by setting the status bar orientation to match the view controller landscape orientation but this causes massive problems when the user manually rotates the device from then on as they aren't in sync. Also in iOS 6, you can't do that if your view controller returns YES from shouldAutoRotate function (calls to setStausBarOrientation are ignored if you control orientation yourself in your view controller) so it took a large hack to do it and it just doesn't feel like the right solution.
To summarise, how can I use a navigation controller & pushViewController (using iOS6) and switch between landscape and portrait views properly? At the moment, I can't get the device to update along with the view so the interface is in landscape but the device is still in portrait. If I try using setStatusBarOrientation to force the device to landscape, things start to go wrong as soon as I manually rotate the screen and it requires such a hack it just can't be the right answer.
thanks!
:-)
This is the easiest way to explain it, keep in mind the view is nested in a Navigation Controller:
1.) App launches and whatever the orientation the device is in, the App is in portrait orientation no matter what. I have the shouldRotate method returning no, so it never rotates.
2.) I click a button, go to another view and turn it to landscape orientation (which is fine)
3.) While in landscape orientation in another view, I hit the "Back" button on the Navigation Controller and it returns me to the view controller I DON'T want rotated in landscape orientation.
What is a good way to consistently keep my main view controller in portrait orientation while coming from a view controller in landscape orientation?
Thanks!
If your design allows it you might want to simply hide the back button until the app is rotated back to portrait. This would force them to be in the orientation you need when they navigate back.
My app mainly uses a navigation controller stack, and sometimes displays some controllers modally. In landscape mode the controllers within the nav controller stack work fine, but other view controller shown by presentViewController or previous presentModalViewController always give portrait size view frame (always 768x1024 on iPad iOS 6.0) - even when rotating back and forth between portrait and landscape.
Kind of related to A view controller is in landscape mode, but I'm getting the frame from portrait mode? however the checked answer is not helping. If I add the later view controller as part of the navigation stack the resize happening on first load and subsequent rotations work. The problem appears only, as stated above, when adding the controller by presentViewController.
wrap the modal branches to another nav controller and define the rotation mask there.
in iOS6 the - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation) works only on nav stack branches and entire branch should work the same way.
So, subclass the nav:
#interface CLNotRotatingNavController : UINavigationController
and in its .m add this
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return NO;
}
- (NSUInteger)supportedInterfaceOrientations {
return UIInterfaceOrientationMaskLandscape;
}
- (BOOL) automaticallyForwardAppearanceAndRotationMethodsToChildViewControllers {
return YES;
}
and wrap all the modal branches to this nav. This will lock everything to lanscape where necessary.
I currently have an authentication view controller defined as the rootViewController when the app starts. When the user is authenticated, the authentication view controller changes the rootViewController of the main windows to a split view controller.
My problem is when I happen to be in landscape mode and that it switches views, the split view is first show in portrait mode and the rotates to appear on landscape mode. What should I do to make it rotate like in background before appearing.
Thanks for your help.
Found out what the problem was. This thread solved my problem
RootViewController animation transition, initial orientation is wrong