I have an app in which only portrait mode is allowed. I am using a subclassed qlPreviewController for showing preview of an image. All orientations are allowed in this. But when I dismiss the preview controller in landscape mode , my UIView Controller's ui collapses. I i use following code in UIViewController's viewWillAppear method, My ui becomes correct.
if i use
-(void)viewWillAppear
{
UIViewController *c = [[UIViewController alloc]init];
[c.view setBackgroundColor:[UIColor clearColor]];
[self.navigationController presentViewController:c animated:NO completion:nil];
[self performSelector:#selector(delay) withObject:self afterDelay:1.0 ];
}
-(void)delay
{
[self.navigationController dismissViewControllerAnimated:NO completion:nil];
}
Can any one suggest the reason for this and a better method to do it
In order to restrict the app to only use portrait mode, I created a BaseViewController class as subclass of UIViewController and allowed only portrait mode in it. I created all other view controllers in the app as a subclass of this BaseViewController. Code in the BaseViewController is :-
-(BOOL)shouldAutorotate
{
return FALSE;
}
-(NSUInteger)supportedInterfaceOrientations
{
return UIInterfaceOrientationMaskPortrait;
}
Related
I'm trying to keep UITableViewcontroller in Portrait orientation. Hence, I don't want to rotate to Landscape mode. I added below method. But it didn't help, notice I'm using iOS 8:
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
if(interfaceOrientation== UIInterfaceOrientationPortrait)
{
return YES;
}else
{
return NO;
}
}
Notice, I'm calling the UITableView through UINavigationController
UINavigationController *navigationController = [[UINavigationController alloc]
initWithRootViewController:svc];
// configure the new view controller explicitly here.
[self presentViewController:navigationController animated:YES completion: nil];
You can set the enabled orientation interface in the Info.plist or, if you want only the Table in this way, you have to modify manually the supportInterfaceOrientation in the navigationController when you are presenting the view. The 'child' will assume the values from the navigationController. Then, when you dismiss the table, you have to reset the supportInterfaceOrientation manually.
I m developing iphone app. In that all viewconenter code heretroller support all orientation. But one of my navigationController stack content want to present one
viewcontroller in Landscape orientation only. I done this by creating one custon UINavigationController with rootviewcontroller as my modelviewcontroller ,it support only landscape mode and it works fine when the parentviewcontroller in portrait modd, but the parentviewcontroller in landscape it present modelview controller as landscape fine but after dismiss the modelViewcontroller the parentviewcontroller as portrait, but the self.view and subview are in landscape.
Please help me.. I put my code and screenshot as below..
.m file in custom navigationcontroller I done this..
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return NO;
}
- (NSUInteger)supportedInterfaceOrientations {
return UIInterfaceOrientationMaskLandscape;
}
- (BOOL) automaticallyForwardAppearanceAndRotationMethodsToChildViewControllers {
return YES;
}
-(BOOL)shouldAutorotate
{
return YES;
}
.m file parentView
//This is my presentViewcintroller code
VideoPreviewViewController *videoPreviewVC = [[VideoPreviewViewController alloc]initWithNibName:#"VideoPreviewViewController" bundle:nil];
customNavigationController = [[CLNotRotatingNavController alloc]initWithRootViewController:videoPreviewVC];
[self.navigationController presentViewController:customNavigationController animated:YES completion:nil];
- (NSUInteger)supportedInterfaceOrientations
{
return UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskLandscapeLeft;
}
.m file in modelviewcontroller
[self.navigationController dismissViewControllerAnimated:YES completion:nil];
I am working on a application which has to play videos when clicking on some thumbnail, I am displaying list. I want only the Video to rotate in Landscape and Portrait Mode but other screens must in Portrait Mode How can we do this.
In ViewWillAppear
UIViewController *vc = [[UIViewController alloc] init];
[self presentViewController:vc animated:NO completion:NULL];
[self dismissViewControllerAnimated:NO completion:NULL];
This will trigger the redrawing of the view and thus calling following functions, provided you have implemented these
- (BOOL)shouldAutorotate{
return YES;
}
- (NSUInteger)supportedInterfaceOrientations{
return UIInterfaceOrientationMaskPortrait;
}
I have one view controller, named AViewController. There is a button in AViewController. When the button is clicked, i will present another view controller,lets called BViewController. If AViewController is in portrait-orientation, it works well.If the orientation is in landscape, then the BViewController is still initialized in portrait but presented in landscape.
This is the problem. I wonder how can i init BViewController in current orientation. I use [UIScreen mainScreen].bounds in the BViewController's init. but the bounds is not in landscape if the device is in landscape. I know pass the frame from AViewController to BViewController, it may work. but i don't think this is a good solution. So is there any better ways?
the function to present BViewController is as follows:
- (void)BtnClicked
{
BViewController *bvc = [[BViewController alloc] init];
bvc.delegate = self;
bvc.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[self presentViewController:movie animated:YES completion:nil];
}
I still don't know how to do it efficiently. But i use one solution to call the willAnimateRotationToInterfaceOrientation method manually in viewDidAppear.
the snippet is as follows:
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
[self willAnimateRotationToInterfaceOrientation:[UIApplication sharedApplication].statusBarOrientation duration:0];
}
I have another orientation problem. But this one is very tricky.
My RootViewController is a normal NavigationController.
self.window.rootViewController = _naviController;
which has another ViewController inside, lets call it VC1.
VC1 has some buttons and labels. Its like an overview with folders.
If I press a button I come to the next ViewController with 3 ViewController (Page) and another bunch of buttons (like inside a folder looking at the pictures/thumbnails inside):
Archiv *archiv = [[Archiv alloc] init];
[self.navigationController pushViewController:archiv animated:YES];
[archiv release];
in loadView:
firstPage = [[Page alloc] initViewWithFrame:CGRectMake(0, 0, 768, 960)];
[firstPage setRootViewController:self];
secondPage = [[Page alloc] initViewWithFrame:CGRectMake(0, -960, 768, 960)];
[secondPage setRootViewController:self];
thirdPage = [[Page alloc] initViewWithFrame:CGRectMake(0, 960, 768, 960)];
[thirdPage setRootViewController:self];
If I now click again on a button the active Page push my third ViewController (image with resizing, dragging...):
Picture *pic = [[Picture alloc] initWithPicURLString:urlString];
[rootViewController.navigationController pushViewController:pic animated:YES];
[pic release];
With the BackButton of the NavigationController I can always come back to the previous view.
Some more informations:
Every ViewController supports all orientations
Every ViewController implements - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation with return YES;
Every ViewControler calls the [super init] in their init-methode
I already read Apple's Q&A: Why won't my UIViewController rotate with the device
Now the tricky problem:
If I switch from 2nd VC to the 3rd VC, change the orientation there from portrait to landscape and press the BackButton everything is working (shouldAutorotateToInterfaceOrientation is calling, frame size and origins changing ...).
BUT if I do it the other way around, I am in landscape mode, switch from 2nd VC to 3rd VC, rotate to portrait and come back to 2nd VC with BackButton, the status- and controllerBar are at the top but the shouldAutorotateToInterfaceOrientation wasn't called.
Please help me. $h#rky
Try this, it works for me:
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self shouldAutorotateToInterfaceOrientation:[[UIApplication sharedApplication] statusBarOrientation] ];
}
Today I got the idea that solved the problem without knowing the cause.
In my third VC I just created a pointer to the 2nd View and called the shouldAutorotateToInterfaceOrientation myself.
But the point is still the same: Why isn't shouldAutorotateToInterfaceOrientation not calling in the described situation?
Kind regards. $h#rky
shouldAutorotateToInterfaceOrientation only called when user rotate, so when you from landscape to portrait or otherwise then view controller still landscape, so this solve problem, you have to hack code, it's mean when you push to view controller from landscape to portrait presentViewController example:
ListCurrentViewController *list = [self.storyboard
instantiateViewControllerWithIdentifier:#"ListCurrentViewController"];
[self.navigationController presentViewController:list animated:NO completion:Nil];
[list dismissViewControllerAnimated:NO completion:Nil];
[self.navigationController pushViewController:list animated:YES];
in ListViewController function called:
(UIInterfaceOrientation)preferredInterfaceOrientationForPresentation // iOS 6 autorotation fix { return UIInterfaceOrientationPortrait; }
and you have to create category for UINavigationController
(UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
return [self.visibleViewController preferredInterfaceOrientationForPresentation];
}
I hope this solve will help you.