So I'm making an iPad app for the very first time and right now I have one view controller with its buttons displayed on the storyboard and everything and what I want to do is when I click on a certain button, it brings me to a new screen.
So I created a second viewcontroller class for the second screen and I created an IB Action method for the button but it's empty because I don't know how to implement it. So what do I have to do to accomplish this?
Try it....
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
{
// iPad-specific interface here
LBAlertLoginViewController *lbAlertLoginVc = [[LBAlertLoginViewController alloc]initWithNibName:#"LBAlertLoginViewController_iPad" bundle:nil];
[self.navigationController pushViewController:lbAlertLoginVc animated:YES];
[lbAlertLoginVc release];
}
else
{
// iPhone and iPod touch interface here
LBAlertLoginViewController *lbAlertLoginVc = [[LBAlertLoginViewController alloc]initWithNibName:#"LBAlertLoginViewController_iPhone" bundle:nil];
[self.navigationController pushViewController:lbAlertLoginVc animated:YES];
[lbAlertLoginVc release];
}
Hope i helped.
Having read every method of handling screen rotation in IOS 6 on here, Apple documents, and fierce Googling, after days and days I am still stuck on this when using xibs.
What im trying to achieve is have a few iPad only xibs, in landscape only, rest of app is portrait.
If I was using storyboards I understand how to subclass the nav controller to override the rotation but I am NOT, im using xibs and would appreciate any input how this works with xibs
In my app delegate:
ICHomeController *homeController = [[ICHomeController alloc] init];
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:homeController];
navController.navigationBarHidden = YES;
navController.navigationBar.barStyle = UIBarStyleBlackOpaque;
navController.navigationBar.tintColor = [UIColor grayColor];
self.navigationController = navController;
[self.window setRootViewController:self.navigationController];
[self.window makeKeyAndVisible];
return YES;
In addition to trying what seems like every solution on here Ive tried the obvious in my vew controllers, but as I understand in iOS 6 it doesn't get called.
// Older versions of iOS (deprecated)
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation {
return UIInterfaceOrientationIsLandscape(toInterfaceOrientation);
}
- (BOOL)shouldAutorotate {
return YES;
}
- (NSUInteger)supportedInterfaceOrientations {
return UIInterfaceOrientationMaskLandscape;
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
return UIInterfaceOrientationLandscapeLeft;
}
I've been battling with this for days too with a more complex navigation structure.
The basic rule seems to be that the ROOT controller, whether it be a UINavigationController, UITabBarController or just a simple UIViewController, takes control of the rotation. So as you PUSH UIViewControllers onto the stack, the very first one still controls the rotation.
If you use a modal view, then this model view will be considered the ROOT of the stack until it is dismissed. So if you show a modal UIViewController then push views on top of it, the UIViewController that was presented as the modal view is in control of the rotation.
Just make sure for modal views to use presentViewController:animated:completion.
The easiest way to get certain views to be in a different rotation, is present it modally.
If this can't be avoided, then go right back to your first view or nag controller and set the rotations.
Add some NSLog(#"%s", __FUNCTION__); statements to your rotation methods to see which ones are being called.
In your code above, only the first method is the old iOS5 (Now deprecated) method. The other 3 are the new iOS 6 methods.
Using your example code above, you would need to subclass the UINavigationController. To do this create a new class as a UINavigationController subclass with a different name eg. MyNavigationController and add the rotation methods to it. Then in your code above instead of using
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:homeController];
You would use:
MyNavigationController *navController = [[MyNavigationController alloc] initWithRootViewController:homeController];
Also, make sure you have allowed orientations selected here:
I had the same problem. Here's what worked for me in 5 and 6.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation {
return (toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft || toInterfaceOrientation == UIInterfaceOrientationLandscapeRight);
}
- (BOOL)shouldAutorotate NS_AVAILABLE_IOS(6_0)
{
return NO;
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation NS_AVAILABLE_IOS(6_0) {
return UIInterfaceOrientationLandscapeLeft;
}
In terms of the target summary, only portrait mode is "supported".
I have a navigation based app with a navigation bar, but there are a few instances where instead of pushing a view controller onto the stack, I need to present the view controller modally. The problem is that when I dismiss the modal view controller, everything functions as expected except that the navigation bar is hidden and the (parent view) has been resized, which is the expected behavior according to the docs. So I figured I could simply call a built-in method to unhide the navigation bar. I have already tried
[self.navigationController setNavigationBarHidden:NO];
as well as the animated version without success.
The documentation talks about this in the method
presentModalViewController: animated:
in the discussion section where it says,
On iPhone and iPod touch devices, the view of modalViewController is always presented full screen" and "Sets the modalViewController property to the specified view controller. Resizes its view and attaches it to the view hierarchy."However, the docs didn't clue me in as to how to undo this process after dismissing a modal view.
Has anyone else experienced this and found a solution?
Edit: I am having this same problem, so instead of asking my own question I am sponsoring a bounty on this one. This is my specific situation:
In my case, I am presenting an Image Picker in a Modal View Controller, over a Navigation Controller:
-(void) chooseImage {
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
imagepicker = [[UIImagePickerController alloc] init];
imagepicker.allowsEditing = NO;
imagepicker.delegate = self;
imagepicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
imagepicker.navigationBar.opaque = true;
imagepicker.wantsFullScreenLayout = NO;
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
if (self.view.window != nil) {
popoverController = [[UIPopoverController alloc] initWithContentViewController:imagepicker];
[popoverController presentPopoverFromBarButtonItem:reset permittedArrowDirections:UIPopoverArrowDirectionDown animated:YES];
} else {}
} else {
[self.navigationController presentModalViewController:imagepicker animated:YES];
}
}
}
-(void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
[self.popoverController dismissPopoverAnimated:true];
} else {
[self.navigationController dismissModalViewControllerAnimated:YES];
}
//Save the image
}
-(void) imagePickerControllerDidCancel:(UIImagePickerController *)picker {
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
[self.popoverController dismissPopoverAnimated:true];
} else {
[self.navigationController dismissModalViewControllerAnimated:YES];
}
}
Make sure you a presenting AND dismissing the modalViewController from the UINavigationController, like so:
// show
[self.navigationController presentModalViewController:vc animated:YES];
// dismiss
[self.navigationController dismissModalViewControllerAnimated:YES];
If your view controller is actually on the UINavigationController's stack then this is the correct way to handle the presentation and dismissal of the modal view controller. If your UINavigationBar is still hidden, there is something else funky going on and we would need to see your code to determine what is happening.
Edit
I copied your code into an app of mine and the UIImagePickerController successfully presented and dismissed and my UINavigationController's UINavigationBar was still there. I truly believe that the problem lays elsewhere in your architecture. If you upload a zip w/ an example project I will take a look.
Simply try following code it will work
SettingsViewController *settings = [[SettingsViewController alloc] init];
UINavigationController *navcont = [[UINavigationController alloc] initWithRootViewController:settings];
[self presentModalViewController:navcont animated:YES];
[settings release];
[navcont release];
One need to present the navigation controller in order to have navigation bar on the presented controller
I think I've seen this behavior when presenting a view controller on the wrong VC. Are you calling presentModalViewController on the navigation controller or the individual VC?
Try calling it from the navigationController if you aren't already.
[self.navigationController presentModalViewController:myVC animated:YES];
If you present a controller as model, View controller will appear to total view.
If you want to access the navigation controller properties over the model view, You need to create another navigation controller reference and it continues as previous.
This may be useful for you.
Check this out. This is Apple's Documentation under UIViewController Class Reference:
It clearly mentions that modal view always presents in full screen mode, so it is obvious that navigation bar will be hidden. So put the seperate navigation bar on modal view to navigate back.
presentModalViewController:animated:
Presents a modal view managed by the given view controller to the user.
- (void)presentModalViewController:(UIViewController *)modalViewController animated:(BOOL)animated
Parameters
modalViewController
The view controller that manages the modal view.
animated
If YES, animates the view as it’s presented; otherwise, does not.
Discussion
On iPhone and iPod touch devices, the view of modalViewController is always presented full screen. On iPad, the presentation depends on the value in the modalPresentationStyle property.
Sets the modalViewController property to the specified view controller. Resizes its view and attaches it to the view hierarchy. The view is animated according to the transition style specified in the modalTransitionStyle property of the controller in the modalViewController parameter.
Availability
Available in iOS 2.0 and later.
Hope this helps you understand that hiding the whole view along with navigation controller is default behaviour for modal view so try putting a seperate navigation bar in modal view to navigate.
You can check it further on this link
http://developer.apple.com/library/ios/#documentation/uikit/reference/UIViewController_Class/Reference/Reference.html
AddContactVC *addController =[self.storyboard instantiateViewControllerWithIdentifier:#"AddContactVC"];
UINavigationController *navigationController = [[UINavigationController alloc]initWithRootViewController:addController];
[self presentViewController:navigationController animated:YES completion: nil];
working for me shows navigation bar
Emphatic and Devin –
As I started reading through the Apple docs to get familiar with the problem, I noticed that the method you're using, presentModalViewController:animated:, appears to be deprecated in favor of presentViewController:animated:completion:. Perhaps you should try to use that method instead.
For your convenience, take a look for yourself:
presentModalViewController:animated: reference
I'll try to put together a quick test program to see whether what I've said above is actually true. But give it a shot – maybe it'll help!
Xcode has a template that does pretty close to what you're doing. from the results, i don't think you should be attempting to perform [self.navigationController presentModalViewController:vc] and [self.navigationController dismissModalViewControllerAnimated:] , but rather simply [self presentModalViewController:] and [self dismissModalViewControllerAnimated:] .
to see how the template does this for yourself, you can use the new project wizard in xcode 4.3 . perhaps it will provide some guidance:
from that choice, choose Next, then give your test project a name, choose "Universal", turn off automatic reference counting, hit next, save where you want it.
now, click on the target and switch the deployment target to 4.3 (or 4.0 if you prefer) for your testing purposes, and switch to your device or the iOS 4.3 simulator .
finally, substitute the following code in applicationDidFinishLaunching:withOptions: in the created AppDelegate.m:
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
self.mainViewController = [[[MainViewController alloc] initWithNibName:#"MainViewController_iPhone"
bundle:nil] autorelease];
} else {
self.mainViewController = [[[MainViewController alloc] initWithNibName:#"MainViewController_iPad"
bundle:nil] autorelease];
}
UINavigationController* navigationController
= [[UINavigationController alloc] initWithRootViewController:self.mainViewController];
self.window.rootViewController = navigationController;
[self.window makeKeyAndVisible];
return YES;
now, when i run this, it doesn't hide the navigationBar. and in the created MainViewController.m from the template, you'll see how it presents the modal view controller and dismisses it from the controller itself and not from the navigation controller. for good measure, to make the template code more like your own, go into MainViewController.m and delete the line that sets the modal view controller transition style ...
(of course, in iOS 5, with storyboards, the same thing can all be accomplished with modal segues ... which is how i've done this for apps that i'm not supporting for pre-5.0 that present a modalViewController in this fashion.)
One of the best solution it to use this Category MaryPopin
https://github.com/Backelite/MaryPopin
I'm trying to create another UINavigationBar in my project, but it seems that I'm missing some key detail. When the application first loads, it does have it's own navigation system, but now I'm trying to add another navigation to a modal.
Many tutorials show you need to connect the view to the [self window], which only seems to work in the AppDelegate files, but when I've tried placing the code* in viewDidLoad, I can never seem to build without any errors.
I've seen this in multiple apps, but how is this done (programmatically or with IBuilder)?
Thanks!
Example code I've tried in viewDidLoad
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:[self viewController]];
[self.window addSubview:navigationController.view];
You don't show enough code to be able to understand how you do it, but it seems to me that you are showing a controller modally, then trying to add as a subview to its view a navigation controller.
You can try and directly push modally your navigation controller (from your app delegate or where it makes sense for your app):
(IBAction) navigateToSecondaryViewController {
if (secondaryViewController == nil) {
informationTableViewController = [[SecondaryViewController alloc]
initWithNibName:#"SecondaryViewController"
bundle:[NSBundle mainBundle]];
secondaryViewController.delegate = self;
}
if (navController == nil) {
navController = [[UINavigationController alloc]
initWithRootViewController:secondaryViewController];
}
[self presentModalViewController:navController animated:YES];
}
Full example here.
So I am developing this view based app and I have an app that I want to start in landscape mode (haven't quite worked out how to do that, because in the plist file the "initial device orientation" isn't an option as I am assuming it used to be, from what people have said (I'm new to this app developing thing)).
Anyway I want to switch to a completely new view when I rotate to Portrait, and also a another new view when I rotate to portrait upside down. Up to now I have added View2Viewcontroller.(h+m) into my classes and also View2.xib into my resources.
I have this code:
- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
if((fromInterfaceOrientation == UIInterfaceOrientationLandscapeLeft) ||
(fromInterfaceOrientation == UIInterfaceOrientationLandscapeRight))
{
// Load the view controller I want to display in portrait mode...
}
}
But I'm not too sure how to load the view controller or even where to put this code.
I advise to you use .nibv files, it's better to understand how to initilize view in by code.
anyway there is what you need.
[[viewController alloc] initWithNibName:#"viewController" bundle:[NSBundle mainBundle]];
in code you can do the same without nib filesw by this code
CGRect rect = [[UIScreen mainScreen] bounds];
//create a full-screen window
window = [[UIWindow alloc] initWithFrame:rect];
//create our view controller and add its view to the window
viewController = [ViewController new];
[window addSubview:[viewController view]];
[window makeKeyandVisible];