I am currently using XCode 3.2.3 and iOS4. I'm working on an app that simply starts with one screen and on a button click moves to the next.
I have gone thorugh the ViewController programming guide and a post here.
What I am doing is very similar to whats happening on the post. So let me explain the steps, I followed:
In IB, drag and drop, a View from the library into the editor. I renamed the new UIView to myView.
In my AppControllerDelegate, I added the new view "myView" as a property of the view controller (File's Owner). I synthesized it as well in the implementation.
Now, in the implementation of the ViewController, within the button pressed action handler, I wrote the following lines of code:
[self.view addSubView: myView];
On clicking the button however, I do not see a new screen or my new view. However if I do this, I get a new screen or new view:
UIView *anotherView = [[UIView alloc] initWithFrame:self.view.frame];
[self.view addSubView: anotherView];
I do know that the best way is to do it with separate NIBs for each UIView. However, I am new to iPhone development and have not explored that path as yet.
My question: What am I missing upto step 3?
One way you could be able to do it is by trying it this way
myView = [[MyViewController alloc] initWithNibName:#"MyViewController" bundle: [NSBundle mainBundle]];
[self.view addSubview: myView.view];
Try that and see if it is working.. if yours is a view based project then instead of [self.view addSubview: myView.view], just give [self.view addSubview : myView];
Related
In IB I've put an View Controller with a Table View and a Navigation bar. Because I want to change the actions (and text) on the buttons when the table is being edited, I decided to create the button programatically.
In the implementation file, I've set up the button (copied from another post on Stackoverflow):
- (void)viewDidLoad {
[super viewDidLoad];
self.title = #"Title";
UIBarButtonItem *editButton = [[UIBarButtonItem alloc] initWithTitle:#"Edit" style:UIBarButtonItemStylePlain target:self action:#selector(EditTable:)];
self.navigationItem.rightBarButtonItem = editButton;
}
But when I run this in the simulator, I don't see the button. Is this the right approach for my goal? Or what am I doing wrong?
Later, I also want to add a Back, Add and Done button.
You probably did not created iboutlet for that navigation bar. Self.navigationItem is a property which is available on any viewcontroller and is applied only if there is a navigationcontroller which manages your viewcontrollers stack. There is no relation to manually created navigationItems..
I assume that either outlet for that navigationbar or going to storyboard, click your viewcontroller and then Editor->Embed In->navigation controller will help you to achieve disered results.
I have a popover menulet and it's contentViewController is some NSViewController. Everything fine here. The problem that I have is that I really don't understand how to change the View. I wanna load another view, and this is what I tried:
popover = [[NextViewController alloc]initWithNibName:#"NextViewController" bundle:nil];
[self.view addSubview:[popover view]];
And this works, new view is shown - but if I click on any button on that view I get error: unrecognized selector sent to instance. Why am I getting this error? Why this new view is not responding?
Please help me understand what I need to do, how to change the view on NSPopover?
I've managed to solve my problem, It turn out to be quite easy:
[self.view setSubviews:[NSArray array]]; //remove all previous subviews
[self.view addSubview:[popover view]];
I'm using MWPhotoBrowser in a project and everything worked great until I implemented a custom tabbar (to make one of the tab items higher and wider). I used RXCustomTabBar as a starting point for my tabbar and only modified it a bit, no meaningful changes though.
After implementing the new tabbar and in the app open the MWPhotoBrowser I can only view the first photo. I can still scroll in the photobrowser but no other photos than the first is shown. Neither can I toggle the "fullScreenLayout" that is implemented in the MWPhotobrowser when I'm not viewing the first photo.
I'm simply confused since I have no idea what is causing this problem. I know it's a far fetched question since it's two custom made libraries I'm working with but perhaps someone has experienced a similar problem in the past. Would be very grateful for suggestions!
This is the code I use to push the MWPhotoBrowser:
MWPhotoBrowser *browser = [[MWPhotoBrowser alloc] initWithDelegate:self];
[self.navigationController pushViewController:browser animated:YES];
I tried presenting the browser modally with:
[self.navigationController presentModalViewController:browser animated:YES];
That way the photos are shown correctly but I have no navigation bar.
After hours of headache I came up with a solution:
MWPhotoBrowser *browser = [[MWPhotoBrowser alloc] initWithDelegate:self];
[browser setInitialPageIndex:indexPath.item];
UINavigationController *navBar = [[UINavigationController alloc] initWithRootViewController:browser];
[self.navigationController presentModalViewController:navBar animated:YES];
I.e. I create a UINavigationController in which I embed my MWPhotoBrowser and then present the navigationcontroller modally.
Hy,
so i have a question about adding a subview. I'm just created an iPad app which has a home screen i which i should add a subview at some point . But when i use :
NotesMainViewController *openNotes = [[NotesMainViewController alloc]initWithNibName:#"NotesMainViewController" bundle:nil];
[self.view addSubview:openNotes.view];
the main view imports that another view, but the controls on it like UITextField or anything else don't work. So, can please anybody tell me how can I add a view from ViewController to a another view (in that case homeViewController). I have been trying with the addsubview method but it doesn't work.
I'm converting my iPhone app to an iPad version, creating new XIBs for the iPad and rigging them to the existing objective C classes using the ~ipad XIB name.
In the iPhone version, I use the navigation controller to step backwards to the app. This should work just fine in the iPad too, but while the navigation controller does appear, it doesnt respond. In fact its invisible to any interaction, if theres a map behind the navigation controller and you double click back, you just zoom on the map where you clicked.
So I'm including a button in the iPad view which should do the same thing. On press I call a
[[self navigationController] popViewControllerAnimated: YES];
When I call this I get the EXC_BAD_ACCESS. I've gone in to the spooky zombie mode which gives me this
*** -[UIWindowLayer superlayer]: message sent to deallocated instance 0x83bb9f0
Ive determined that 0x83bb9f0 is the presenting layers self.view.layer
I'm using ARC to handle my allocations and deallocs.
THE QUESTION IS: How can I prevent self.view.layer from deallocing? or how can I allocate it again at the proper time so that I dont get this error?
I can provide more code if needed. Thanks so much!!
Edit: Heres where the main page (landing page) is created, and the nav controller
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
landingPage *LandingPage = [[landingPage alloc] initWithNibName:#"landingPage" bundle:nil];
self.navigationController = [[UINavigationController alloc] initWithRootViewController:LandingPage];
self.window.rootViewController = self.navigationController;
// [self.navigationController pushViewController:LandingPage animated:YES];
[self.window makeKeyAndVisible];
return YES;
Then here is where the inner view is called:
mapView *MapView = nil;
MapView =[[mapView alloc] initWithNibName:#"mapView" bundle:nil];
[self.navigationController pushViewController:MapView animated:YES];
So I got it!
The XIBs I was creating for the iPad version were windows instead of views. I recreated all of these as views and rigged it up and it worked just fine!