I think the issue here is that I'm trying to call a mediaPicker and that doesn't support other orientations...
Does anyone have a fix for this?
Here is my current code:
- (IBAction)openMediaPicker:(id)sender {
MPMediaPickerController *mediaPicker = [[MPMediaPickerController alloc] initWithMediaTypes:MPMediaTypeAnyAudio];
mediaPicker.delegate = self;
mediaPicker.allowsPickingMultipleItems = YES; // this is the default
mediaPicker.modalPresentationStyle = UIModalPresentationPageSheet;
//mediaPicker.prompt = #"Select items to play";
[self presentModalViewController:mediaPicker animated:YES];
[mediaPicker release];
// Init a Navigation Controller, using the MediaPicker as its root view controller
UINavigationController *theNavController = [[UINavigationController alloc] initWithRootViewController:mediaPicker];
[theNavController setNavigationBarHidden:YES];
// Init the Popover Controller, using the navigation controller as its root view controller
popoverController = [[UIPopoverController alloc] initWithContentViewController:theNavController];
// Make a rect at the size and location of the button I use to invoke the popover
CGRect popOverRect = chooseMusicButton.frame;
// Specify the size of the popover
CGSize MySize = CGSizeMake(520.0, 720.0);
[popoverController setPopoverContentSize:MySize animated:YES];
// Display the popover
[popoverController presentPopoverFromRect:popOverRect inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
popoverController.delegate = self;
}
This code is overly complicated. First you present the media picker modally, then you present it as a popover; why? In the popover, you stuff it into a navigation controller before presenting it; why? Presenting a media picker on iPad is much simpler than that:
MPMediaPickerController* picker =
[[[MPMediaPickerController alloc] init] autorelease];
picker.delegate = self;
UIPopoverController* pop =
[[UIPopoverController alloc] initWithContentViewController:picker];
self.currentPop = pop;
[pop presentPopoverFromRect:[sender bounds] inView:sender
permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
[pop release];
That works in any orientation and even survives rotation while the popover is showing.
All pre-defined modal controllers support all orientations but they must be presented from the root view controller for them to behave correctly in orientation and rotation. My guess is that that the "self" in your code is not the root view controller. You may have to re-architect the code a bit to make this happen if possible.
There are other hacks I have seen to make it work without being presented from the root view controller but they all seemed to be asking for trouble such as extending UIViewController with a category to over-ride interfaceOrientation.
If you can present it from the root view controller, it would be the simplest and cleanest but I realize it is not always possible (e.g., it is inside a library you are providing to third party apps to embed).
Related
When I push cancel button in the third view, I want to go back to the first view directly.
I also want to remove the second view.
How can I do that?
This is the code.
// this part is in the first view.
self.second = [SecondController alloc] init];
[self.view addSubview:second.view];
// this part is in the second view.
ThirdController *thirdController = [[ThirdController alloc] initWithStyle:UITableViewStyleGrouped];
self.navigationController = [UINavigationController alloc] initWithRootViewController:thirdController];
[self.view addSubview:navigationController.view];
// this part is in the third view.
- (void)cancel {
[self.view removeFromSuperview]; // this only goes to the second view.
}
EDIT:
Can I use popToViewController in called contoller? My app crashes.
I thought popToViewController can be used only in calling controller.
And popToViewController is used when it was pushed.
I did add not push.
[self.navigationController popToViewController:[[self.navigationController viewControllers] objectAtIndex:0] animated:YES];
popToViewController:animated: is a UINavigationController method that you use when popping view controllers off the navigation controller stack. It doesn't fit for this scenario.
This user is adding subviews, not pushing them on a navigation controller stack.
As a note, it appears as a matter of design you should be using a navigation controller with the first view as the root controller, then the second pushed on the stack, and the third pushed on the stack. Then all you have to do is [self.navigationController popToRootViewControllerAnimated:YES].
I think this will work if you want to keep your current architecture:
// this part is in the third view.
- (void)cancel {
// remove the second view (self.view.superview) from the first view
[self.view.superview removeFromSuperView];
// can't recall, possibly you still need to remove the third view, but i think removing the superview will do it.
// [self.view removeFromSuperView];
}
If you prefer to try the UINavigationController route, then the easiest path is to create a new project in Xcode and select the type for a Navigation-Based Application or a Master-Detail Application. This will create a UINavigationController in a nib and add it to your window. You can then set the root view controller in Interface Builder to your FirstViewController class.
If you prefer to create the UINavigationController in code, then that is also possible. I show that below, along with the rest of the code you need, regardless of whether you create your UINavigationController in a nib in IB or in code.
I also recommend reading the View Controller Programming Guide for iOS.
In your app delegate or some other code:
-(void)application:(UIApplication*)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions [
// I would recommend setting up the UINavigationController and FirstViewController as IBOutlets in your nib, but it can be done in code.
FirstViewController* fvc = [[FirstViewController alloc] initWithNibName:#"FirstView" bundle:nil];
UINavigationController* navController = [[UINavigationController alloc] initWithRootViewController:fvc];
[window addSubView:navController.view];
[window makeKeyAndVisible];
[fvc release];
[navController release];
}
In the first view controller:
SecondViewController* svc = [[SecondViewController alloc] initWithNibName:#"SecondView" bundle:nil];
[self.navigationController pushViewController:svc animated:YES];
[svc release];
In the second view controller:
ThirdViewController* tvc = [[ThirdViewController alloc] initWithNibName:#"ThirdView" bundle:nil];
[self.navigationController pushViewController:tvc animated:YES];
[tvc release];
In the third view controller:
-(void)cancel {
// returns to the first view controller
[self.navigationController popToRootViewControllerAnimated:YES];
}
Use
- (NSArray *)popToViewController:(UIViewController *)viewController animated:(BOOL)animated
to go back to a specific view controller.
Try this:
[self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:1] animated:YES];
This will pop to the view at index 1. Hope that Helps!
// this part is in the third view.
- (void)cancel {
self.first = [SecondController alloc] init];
[self.view addSubview:second.view];
}
And I think if you have you don't need to be worried about removing beneath view, later these will removed.
My UITabBar is not completely showing after I present a UITabBarController from a UIViewController. Please can you tell me what I am doing wrong?
My code is:
//some method
LoggedInViewController *lvc = [[[LoggedInViewController alloc] initWithAccount:account] autorelease];
[self presentModalViewController:lvc animated:YES];
- (void)viewDidLoad
{
self.tabController = [[UITabBarController alloc] init];
LoggedInFeedNavigationController *navController = [[LoggedInFeedNavigationController alloc] initWithAccount:self.account];
[self.tabController setViewControllers:[NSArray arrayWithObject:navController]];
[self.view addSubview:self.tabController.view];
[super viewDidLoad];
}
It's not a good practice to do:
[viewController1.view addSubview:viewController2.view];
The point of the MVC design is lost. The view controller should get your data (from the model) and put it in the view. If you have more than one view just arrange the functionality of the views to accept the corresponding data.
So if you need a tab bar controller you should do the following:
// assuming you are in the same initial controller
UITabBarController* pTabBarControllerL = [[UITabBarController alloc] init];
MyFirstController* pFirstControllerL = [[MyFirstController alloc] init];
[pTabBarControllerL setViewControllers:[NSArray arrayWithObject:pFirstControllerL]];
// perhaps set more tab bar controller properties - button images and so on
[self presentModalViewController:pTabBarControllerL animated:YES];
// release the memory you do not need
-(void)viewDidLoad {
// do your work in pFirstControllerL
}
PS: You should not subclass UINavigationController and UITabBarController.
Actually according to the Apple's recommendations UITabBarViewController should be the root in the UIWindow hierarchy. We had hard times trying to put TabBar VCs or Navigation VCs not to the root.
I've got a fullscreen view inside of a UINavigationController. When I attempt to present a modal view on top of it, the UINavigationBar changes to opaque, pushing down the content, before the modal view animates. How do I keep this from happening?
ContextMenuViewController *cmvc =
[[ContextMenuViewController alloc] initWithNibName:nil bundle:nil];
[cmvc setDelegate:self];
UINavigationController *navControl =
[[UINavigationController alloc] initWithRootViewController:cmvc];
[cmvc release];
[navControl.navigationBar setBarStyle:UIBarStyleBlackTranslucent];
[self.navigationController presentModalViewController:navControl animated:YES];
[navControl release];
[[UIApplication sharedApplication]
setStatusBarStyle:UIStatusBarStyleBlackTranslucent
animated:NO];
The UINavigationController's root view does not have any transparency (status bar nor UINavigationBar), only the pushed controllers have the transparency.
I created a video of the issue: http://www.youtube.com/watch?v=KSFvzTR5Ejk
Example source at: http://cl.ly/7lu2
I tried your code in a very small test project and didn't see the issue you describe. I suggest you do the same thing. Start with the Navigation-based Application template. In the main nib, check the navigation controller's Wants Full Screen and Resize View From Nib, and make its nav bar transparent. In the root view controller's nib, put a button that you can respond to, set up the action, and paste in your code. Create the ContextMenuViewController class; there is no need to give it a nib.
Run the app and press the button. The modal view slides into place, with a transparent nav bar, without affecting the transparency of the nav bar that already exists and without moving the existing content.
So now, once you've proved to yourself that it works in this simple project, it's just a question of locating what you're doing different from that in the real project.
Try setting the bar styles during viewDidLoad for the root View Controller.
HERE YOU GO )
OptionsViewController *detailViewController = [[OptionsViewController
alloc] initWithNibName:#"OptionsViewController" bundle:nil];
UINavigationController *optionsController = [[UINavigationController
alloc] initWithRootViewController:detailViewController];
[detailViewController release];
optionsController.navigationBar.translucent = YES;
optionsController.navigationBar.opaque = YES;
optionsController.navigationBar.tintColor = [UIColor clearColor];
optionsController.navigationBar.backgroundColor = [UIColor
clearColor];
optionsController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:optionsController animated:YES];
[optionsController release];
I have a button that when clicked shows a view controller. The code for that event is:
and my view controller looks like this:
note the segmented control and background image.
Here is my h and m files of my view controller in case you need them:
when I run my app here is how that view control looks on my iPad:
why do the background image and segmented control do not appear? why are contents not being loaded? It looks like another view controller is being loaded but I have already make sure that I am placing the correct name in the string for the view controller.
- (IBAction) vaClick
{
imgVa.image = [UIImage imageNamed:#"bt-valores.png"];
UIViewController *control = [[NuestrosValoresViewController alloc] initWithNibName:#"NuestrosValoresViewController"
bundle:nil];
UINavigationController *navControl = [[UINavigationController alloc]
initWithRootViewController:control];
[self presentModalViewController:navControl animated:NO];
[navControl setNavigationBarHidden:YES];
[control release];
[navControl release];
//UINavigationController *navControl = [[UINavigationController alloc]
//initWithRootViewController:control];
//[self presentModalViewController:navControl animated:NO];
}
should I release it like this? sorry I basically have to translate a power point presentation to an app therefore I know very little about objective-c. thanks for the help and sorry for the dumb question.
You're not setting the root view controller of your UINavigationController.
Use this line instead when initializing the navigation controller:
UINavigationController *navControl = [[UINavigationController alloc] initWithRootViewController:control];
You'll also want to release navControl after you present it modally. I'll write out the code for you if you post your code instead of using screenshots.
As you guess am still a newbie, getting my head around iphone development.
I am just trying out basic view loading on demand, which i cant get to work
I have an app, with 2 view controllers, each view controller connected a different nib file.
I am trying to switch between view manually; there is no navigation control involved.
How can i manually push the second view to the first view?
self.navigationController pushViewController wont work since there is no navigation controller.
How else can I push the second view on top of the first view and destroy the first view; and ofcourse vice versa?
I have done this in the first view's button action:
SecondView *sv=[[SecondView alloc] initWithNibName:#"SecondView" bundle:nil];
[self.navigationController pushViewController:sv animated:YES];
obviously, it didn't work.
window addSubView didn't work either, because the first view controller is the root view controller (not sure i said that right). In other words, when i run the app, the first view is what I see with a button that is supposed to load the second view.
I have spent hours searching for a simple example, and I couldn't find any.
Any suggestions?
in the first view controller you need this:
- (IBAction)pushWithoutViewController:(id)selector {
NextNavigationController *page = [[NextNavigationController alloc] initWithNibName:NextNavigationController bundle:nil];
CGRect theFrame = page.view.frame;
theFrame.origin = CGPointMake(self.view.frame.size.width, 0);
page.view.frame = theFrame;
theFrame.origin = CGPointMake(0,0);
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.8f];
page.view.frame = theFrame;
[UIView commitAnimations];
[self.view addSubview:page.view];
[page release];
}
and then link it to the button in nib. :)
try :
SecondView *sv=[[SecondView alloc] initWithNibName:#"SecondView" bundle:nil];
[self presentModalViewController:sv animated:YES];
IF you have first xib and you want to give navigation to another controller then you have to declare navigation in to appdelegate.m
write following code to app
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:self.viewController];
self.window.rootViewController = navController;
then in ViewController.m
- (IBAction)NextButtonClicked:(id)sender
{
yourNextViewController *objyourNextViewController = [[yourNextViewController alloc] initWithNibName:#"yourNextViewController" bundle:nil];
[self.navigationController pushViewController:objStartUpViewController animated:TRUE];
}