I am working on storyboard based application (iPhone). Application has a Navigation Controller to start with. We are integrating an existing application with it. Thus we need to load the NIB file on click of a button.
NSBundle *someBundle = [NSBundle category_bundle ];
MainWindow *aViewController = [[MainWindow alloc]
initWithNibName:nibName
bundle:someBundle];
[self.navigationController pushViewController:aViewController animated:YES];
The existing application then loads another VC.
[[self navigationController] pushViewController:mySecondView animated:YES];
This view again comes from NIB.
This view then uses a singelton to get the instance of MainWindow (loaded in first step) and request it to show a modal view. "Bad Design" but I can not change it as this is an existing application and I need to deliver the integration tomorrow.
Modal is shown as -
[self presentModalViewController:aModal animated:YES];
We are opening the modal in landscape and for that in its viewWillAppear we are using this code-
[UIApplication sharedApplication].statusBarOrientation = self.interfaceOrientation;
and in viewDidDisappear
if (SYSTEM_VERSION_LESS_THAN(#"5.0")) {
[UIApplication sharedApplication].statusBarOrientation = self.parentViewController.interfaceOrientation;
} else {
[UIApplication sharedApplication].statusBarOrientation = self.presentingViewController.interfaceOrientation;
}
Question:
The problem is that UIView of MainWindow moves up by 20px after the modal pop up has been closed. I have tried to reset the frame. Also tried to hide the status bar but then status bar partially hides the navigation bar, to resolve this we tried to hide the navigation bar after the status bar has been made visible and then showing it again, but with no success.
Please let me know how can I resolve this issue.
Related
I have a button when it pressed, I want it to take me to another view (the "news" view). Within the news view, I want there to be a navigation bar with a back button. I have a navigationcontroller setup throughout my app but I can't seem to get this to work when this button is pressed. It takes me to the view I want but there is no navigation bar and no back button. This is my code that is implemented when the button is pressed.
If anybody know what I am doing wrong, it would be much appreciated.
Thanks
-(IBAction)news
{
newsViewController *view1 = [[newsViewController alloc] initWithNibName:#"newsViewController" bundle:nil];
view1.title=#"news";
[self.navigationController pushViewController:view1 animated:YES];
}
I am not in my mac, so I can not test code, but if it is working and the only issue you got is not show the bar, what you need to is set the bar to be visible:
From apple docs:
The navigation toolbar is hidden by default but you can show it for
your navigation interface by calling the setToolbarHidden:animated:
method of your navigation controller object. If not all of your view
controllers support toolbar items, your delegate object can call this
method to toggle the visibility of the toolbar during subsequent push
and pop operations.
Something like that is supposed to work:
-(IBAction)news {
newsViewController *view1 = [[newsViewController alloc] initWithNibName: #"newsViewController" bundle:nil];
view1.title=#"news";
[self.navigationController pushViewController:view1 animated:YES];
//Add this line!
[self.navigationController setNavigationBarHidden:NO animated:YES];
}
I hope it can help you.
write the below code in page where you want to show navigation controller
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
self.navigationController.navigationBarHidden = NO;
}
I have an app which consists of three layers of view controllers: UITabBarController => UINavigationController => UIViewController. They are all generated in code rather than using IB. The tab bar is on the bottom as per the usual design guidelines. In my UIViewController I am using this code to present the modalViewController:
myModalVC = [[MyModalViewController alloc] init];
[self.navigationController presentModalViewController:myModalVC animated:YES];
This work fine and the modal view controller pops up and covers the entire screen.
However when a button is pressed within the modal view controller, I run this:
[self dismissModalViewControllerAnimated:YES];
And the modal view controller animates away. However I can see the original UIViewcontroller view but the tab bar disappears completely. I've googled a lot but I can't find anyone that has this same problem.
You should delegate your modal view controller to your parent view controller. [self dismissModalViewControllerAnimated:YES]; should be done by the delegate and not the modal view itself, parent view are responsible for dismissing the modal view.
Actually I found this by googling a bit more. I made my tab bar controller a property of the app delegate and when it presents the modal vc, it does this
UIApplication *myApp = [UIApplication sharedApplication];
noIBAppDelegate*appDelegate = (noIBAppDelegate*)myApp.delegate;
[appDelegate.tabBarController presentModalViewController:myModalVC animated:YES];
Then it dismisses it by this bit of code
UIApplication *myApp = [UIApplication sharedApplication];
noIBAppDelegate*appDelegate = (noIBAppDelegate*)myApp.delegate;
[appDelegate.tabBarController dismissModalViewControllerAnimated:YES];
This fixes the the tab bar disappearing.
Try
[self.navigationController dismissModalViewControllerAnimated:YES];
Thanks for your answer! I had the same problem, but I'm writing in Swift, so thought I'd include my solution that I figured out from looking at yours. I only had to use these two lines to fix the problem. Nothing else was needed.
tabBarController?.presentViewController(viewController, animated: true, completion: nil)
and
tabBarController?.dismissViewControllerAnimated(true, completion: nil)
I should also mention that the line: tabBarController?.delegate = self, is in the viewDidLoad function of my NavigationController.
I added a modalView to my App, everything working fine, but on closing the modal, the whole modalView jumps about 1-2 centimeters to left while it disappears.
I did not find any reason for it yet, so here is the code regarding modal:
AppController:
- (void) showNameModal:(Player *)player
{
namesModal = [[PlayerModalView alloc] init];
namesModal.delegate = self;
namesModal.player = player;
UINavigationController *navCon = [[UINavigationController alloc] initWithRootViewController:namesModal];
navCon.modalPresentationStyle = UIModalPresentationFormSheet;
[self presentModalViewController:navCon animated:YES];
[navCon release];
[namesModal release];
}
- (void)didDismissModalView
{
[self dismissModalViewControllerAnimated:YES];
}
ModalView:
- (void)dismissView:(id)sender
{
[delegate didDismissModalView];
}
called via navigation buttons as well ass via keyboard by
[self dismissView:nil];
As you can see, there is nothing special in it, could be taken from a manual actually.
What happens in detail:
Modal appears in center of screen, slides in from the bottom. centered all time.
i can handle some actions in the modalView, it stays centered.
now, dismissing the view makes it jumping to the left, than slides out.
Since it's a forced landscape-right app (currently), I was only able to notify the left-jump.
Any ideas how to get this jumping away?
Thanks
Try this,
- (void)didmissView:(id)sender
{
[self.navigationController didmissModelViewControllerAnimated:YES];
}
You are not modally presenting an instance of PlayerModalView but rather a UINavigationController. The left jerk you see is most likely the default animation of the navigation controller attempting a slide transform to the (non-existant) previous view.
It doesn't sound like you need a navigation controller for the PlayerModalView. Instead, you should create an ordinary view controller for it.
This solution seems to work well: Modal View Controller with keyboard on landscape iPad changes location when dismissed
To simplify resigning the first responder (if finding it is difficult), you can just call
[self.view endEditing:YES];
[self dismissModalViewControllerAnimated:YES];
The problem is that the UIViewController you're showing modally doesn't allow the orientation you're presenting it in, so when it disappears, it will do that in a direction that it considers "allowed".
Add this to the UIViewController for you modal view:
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return YES;
}
So I have a modal view displaying in my app that has a little info for the user to fill out. The problem is that when the device is rotated, some animation occurs, but only in the frame. The form itself does not rotate. All the autorotate options are set to YES. I am displaying it when the user clicks on a field in a popover. This makes me suspect it has something to do with that but I am not sure. It is bizzare because if the device is in either view and then the modal window is displayed, it is fine. It only happens when the device is rotated in the modal view. Does anyone have any idea what may be causing this behavior when the device is rotated? Thanks!
Here is a snippet that is handled in the popover view controller:
if (currentLevel == 1 && businessOrLocation == 0){
if(tbsViewController == nil)
tbsViewController = [[BusinessFilteredViewController alloc] initWithNibName:#"BusinessFilteredView" bundle:[NSBundle mainBundle]];
NSMutableArray *tempBusiness = [[NSMutableArray alloc] init];
for (id theKey in appDelegate.groupedBusiness) {
NSMutableArray *tempArr = [appDelegate.groupedBusiness objectForKey:theKey];
[tempBusiness addObject:tempArr];
}
tbsViewController.businessOrLocation = businessOrLocation;
tbsViewController.modalPresentationStyle = UIModalPresentationFullScreen;
tbsViewController.modalTransitionStyle = UIModalPresentationFullScreen;
[self presentModalViewController:tbsViewController animated:YES];
}
I ran into this problem as well. The fundamental problem is that popover controllers cannot present modal views—it seems that case wasn’t properly considered or designed for. In my situation, it was easy enough to work around. I just extended the delegate protocol for my popover-hosted view controller. The main view sets itself up as the delegate to the popover view, and takes responsibility for displaying and dismissing the modal views the user requests from within the popover.
Since I already had a delegate protocol to cleanly dismiss the popover view when the user clicks “done” it was only a small stretch to get autorotation working the way I wanted it to. Here are some snippets:
#protocol InfoViewControllerDelegate <NSObject>
#optional
// Implement this to close the info view once the user clicks done.
- (void)infoViewDidFinish:(InfoViewController *)view;
// Implement this method if the delegate launched us as a popup view and must therefore
// take responsibility for diplaying help.
- (void)infoViewDidRequestHelp:(InfoViewController *)view;
#end
And in my main iPad view which presents this popup view:
#pragma mark - InfoViewControllerDelegate methods
- (void)infoViewDidFinish:(InfoViewController *)view {
[self hideInfo:self];
}
- (void)infoViewDidRequestHelp:(InfoViewController *)view {
[self hideInfo:self]; // Close the info view first
HelpViewController *help = [[HelpViewController alloc] init];
help.delegate = self;
[self presentModalViewController:help animated:YES];
[help release];
}
To make life simple for cases where I am launching the info view outside of a popup view (for example, on the iPhone, it is a simple modal view), it checks to see if the delegate handles the modal subviews, and if not, handles them itself. That way I didn’t need to change the iPhone base controller at all, since autorotation already worked fine there. Here’s the “Help” button action in the info view controller, showing how I did that:
- (IBAction)help:(id)sender {
if ([delegate respondsToSelector:#selector(infoViewDidRequestHelp:)]) {
[delegate infoViewDidRequestHelp:self];
} else {
HelpViewController *help = [[HelpViewController alloc] init];
help.delegate = self;
[self presentModalViewController:help animated:YES];
[help release];
}
}
With this code in place, my entire interface autorotates smoothly on both devices, whether or not popup views were involved.
Just so i understand correctly... You are displaying a popover and inside that popover if the user taps a certain element then you are displaying a full screen modal view controller? Vie never tried that before and it seems odd for two reasons.
First it seems jarring to the user in my opinion. The popover gives you a nice, integrated UI and the modal takes you away.
More importantly though, your popover view controller doesn't really have authority over the whole screen so presenting a full screen modal from a popover just seems inherently wrong.
I would suggest you display a nav controller in the popover controller and instead of presenting the new view controller modally over the whole screen just push it on to the nav controller in the popover and keep the user inside the popover.
If that doesn't really work for you, then I would suggest reviewing your UI needs and redesigning the layout.
I am guessing that you implemented - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation in BusinessFilteredViewController and returns YES
Could you check that you add more than 1 subviews to application window . If so, try to create container UIViewController for all viewControllers that you want to add to window.
I have a view that I want to take up the full screen, so I override the init method, and some of the view methods:
- (id) init {
if (self = [super init]) {
self.wantsFullScreenLayout = YES;
}
return self;
}
- (void) viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[[UIApplication sharedApplication] setStatusBarHidden:YES animated:YES];
}
- (void) viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
[[UIApplication sharedApplication] setStatusBarHidden:NO animated:YES];
}
Now, from another screen, I want to display it as a modal view:
UIViewController *screen = [[MyScreen alloc] init];
[self presentModalViewController:screen];
[screen release];
All pretty standard stuff. When I want the full-screen view to go away, however, the previous view is shifted or stretched up by about 40 pixels.
Specificially, I have a UITabBarController with a UINavigationController inside, displaying a UITableViewController, which is the view that displays the subview, and also the view that gets shifted up. If the table is not in a navigation controller, everything works just fine, nothing gets shifted up at all. If I experiment with commenting out the wantsFullScreenLayout and setStatusBarHidden lines with no navigation bar, it sometimes shifts up just 20 pixels, or doesn't actually display on the full screen (but later it does without changing any code), or sometimes doesn't break at all (but I am not getting the full full screen with any of these)
What am I doing wrong?
Through some combination of Sean's suggestion and jumping up the responder chain, I've found a solution that works is what seems like all circumstances (so far).
First issue:
The Table View by itself does not display in a navigation controller, but may show up in one if being selected from the more view in the tab bar, and that's the case where displaying the modal view in full screen causes the table to underlap the navigation bar upon return.
Second issue:
When not displayed in a navigation controller, presenting the modal view does not take up the full screen (even though wantsFullScreenLayout is set to YES). When returning from this view, the view is shifted up by 20 pixels and you can see a gap between the bottom of the table and the top of the tab bar.
Solution:
- (void) viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[self.navigationController setNavigationBarHidden:YES animated:NO];
[self.navigationController setNavigationBarHidden:NO animated:NO];
}
- (void) presentModalViewController:(UIViewController *)screen animated:(BOOL)animated {
UIResponder *responder = self;
while (responder && ![responder isKindOfClass:[UITabBarController class]]) {
responder = [responder nextResponder];
}
[(UIViewController *)responder presentModalViewController:screen animated:YES];
}
The toggling of the navigation bar's visibility forces the relayout. Overriding presentModalViewController actually calls presentModalViewController on the tab bar controller instead, which then causes it to show in the full screen. For some reason, self.tabBarController is nil when not in the more view controller, so I had to jump up the responder chain to find it.
Your UINavigationController will get called with the viewWillAppear before the modal view is dismissed. Have you tried calling [[UIApplication sharedApplication] setStatusBarHidden:NO animated:NO]; inside the controllers that can be visible post modal dismissal. I have run into tons of problems displaying modal views on top of UINavigationControllers when bounds change. It fights any layout changes and requires lots of resetting to previous states to get it behaving nicely. It might also not hurt to call [self.navigationController setNavigationBarHidden:NO animated:NO] as well to force layout.
If this works well it might serve you to create a simple baseclass that sets these in it's viewWillAppear and then just subclass it for all non modal view controllers.
If this doesn't work you might try placing a swap view at the top level that contains the tab bar controller and then you could remove the tab bar controller with a transition when you present your modal view. Yes this isn't technically modal but would still look nice and offer the same effect. At that time since the view controller is out of the view hierarchy it shouldn't get it's layout all munged.
I think this has to do with the timing of the presentModalViewController: call. As a test you could try adding sleep(3) before you call that method. If that fixes anything, or even if it doesn't i guess I would try moving the order of things around. maybe viewDidDisappear and viewDidAppear instead of 'Will'