I have a problem, using presentModalViewController to display a UIView. Within the Application I have a NavigationController with a list of Items. Touching a Cell calls the first ViewController, responsible for only showing a background picture. Within the viewDidLoad method I create another ViewController which has a UiScrollView, displaying some information about the item.
So far so good.
Now, an item can consist of subitems, so if I click on a subitem, I use presentModalViewController to create a new instance of the first ViewController. My problem is, that this newly displayed controller is show around 180px(a guess) lower than it should be. I thought, this was due to relative coordinates I set wrong, but if I click on a subitem with the new (lower) controller, I would expect it to be displayed lower again (say 360px) - relative to the topleft corner of the Iphone.
Anyway, this doesnt happen. My question is why is the new controller displayed lower than it should be/I expect it to be. Spent a few hours on this, so any ideas are appreciated!
Edit: Some Code - this is the part, where i present the controller:
ItemDetailsViewController *itemScrl= [[ItemDetailsViewController alloc] initWithNibName:#"ItemDetailsViewController" bundle:nil];
itemScrl.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:itemScrl animated:YES];
This is the part, where I create the scrollable View:
- (void)viewDidLoad {
[super viewDidLoad];
ItemScrollController *itemScrl = [[ItemScrollController alloc] initWithNibName:#"ItemScrollController" bundle:nil];
itemScrl.title = self.title;
itemScrl.view.frame = CGRectMake(20 , 0, 280, 400);
[self.view addSubview:itemScrl.view];
}
I think my problem was, not having added a Navigationbar in the parentviewController and not telling the subview, that there actually was one. There are various ways to do this, I suppose, anyways, in IB you can checkmark the Navigationbar box for the actual view and thus it shouldnt be resizing anything.
Related
I have the beginnings of my app working pretty well but I have one small issue that I can't figure out how to fix.
It's a view based app and I have a NavigationController in my appDelegate file which is pushing various ViewControllers as required. Going in the "forwards direction" everything works well, seems perfect actually, but the problem I have is when VC's are popped off the stack. This is the code I'm using to show the VC and then just using the back button to go back.
UINavigationController *iaxNC = [[UINavigationController alloc] init];
LogInViewController *logInVC = [[LogInViewController alloc] init];
[iaxNC pushViewController:logInVC animated:NO];
[logInVC release];
[_window addSubview:iaxNC.view];
[_window makeKeyAndVisible];
That loads my login view and then the code checks to see if there are any users before it loads the SetUp screen (if there are none) as follows:
setUpVC = [[SetUpViewController alloc] init];
setUpVC.firstUse = self.firstUse;
[self.navigationController pushViewController:setUpVC animated:YES];
[setUpVC release];
The problem happens when I hit the back button from the SetUp view to go back to the LogIn view.
I have a portrait and a landscape view for most of the VC's and these VC's are subclasses of Michael Tyson's TPMultiLayoutViewController. The portrait view is hooked up as *portraitView and also as *view, the landscape view is hooked up as *landscapeView.
The problem is this:
If I push a VC into view and change the orientation of the device before I hit the back button then when I do hit "Back" the previous VC is displayed in its original format (i.e. NOT rotated to the current orientation) it also appears that the lower left corner of the view is in the lower left of the screen. It then "sticks" like that until I rotate the device again and then all is good and functions as expected.
So the thing is I'm working through the contents of the TPMultiView subclass but I don't pretend to understand all of it yet (and therein probably lies my REAL problem) but as a stopgap solution is there a way to force the view of the "pusher" VC to appear in it's previous orientation (albeit briefly - and THEN allow it to rotate once it has been displayed) when the "pushee's" VC is popped?
Does that make sense?
SOLVED IT! The problem was I had included my own viewWillAppear method in LogInVC but I hadn't called [super viewWillAppear] so the effect of the superclass was never really going to work, was it! Thanks for the input. I can recommend the TPMultiView drop in subclass BTW works very nicely.
You should first verify your implementation of shouldAutoRotateToInterfaceOrientation: is correct for all your view controllers.
Then make sure the views of your view controller's have an appropriate autoresizingMask set. If you have created the view controllers and their views in Interface Builder you should set the resizing mask there.
Otherwise in your -loadView or -viewDidLoad methods you should have this line:
self.view.autoresizingMask = UIViewAutoresizingFlexibleWidth |
UIViewAutoresizingFlexibleHeight;
I am working with a navigation application. I have a homeViewController with two views(accept, service). When I click on a button in serviceView it should go to acceptView. I should have back button in navigation bar which takes me be back to serviceView from acceptView. When I am trying to use [self navigationController pushViewController, it only accepts viewcontroller but not view. Can any one please tell the alternative. Please help me.
Thanks in advance
You should have a different viewController for each view if you wish to use a navigationController properly.
Set up AcceptViewController and ServiceViewController separately. Then, from the AcceptViewController, you can create a ServiceViewController and push it onto the stack as follows:
-(void)showServiceView {
ServiceViewController *serviceViewController = [[ServiceViewController alloc] init];
[self.navigationController pushViewController:serviceViewController];
[serviceViewController release];
}
Assuming you've references to both acceptView and serviceView, you can just make this work by removing one as the subview and adding the other one as the subview of homeViewController's view. Something like,
[serviceView removeFromSuperview];
[self.view addSubview:acceptView];
for moving to acceptView. Switch them if you want to come back. However this mechanism will be abrupt. Use UIView's transitionFromView:toView:duration:options:completion: method to animate the transition. Something like,
[UIView transitionFromView:serviceView
toView:acceptView
duration:0.5f
options:UIViewAnimationOptionTransitionFlipFromLeft| UIViewAnimationOptionCurveEaseInOut
completion:NULL];
This will remove serviceView and add acceptView as the subview along with a transition to go by.
When I try to present a modal view controller, it functions as its supposed to, but it appears with the wrong orientation and only goes half way along the screen (only the top half of it is showing). The code seems simple enough -
-(void)showAboutView {
AboutViewController *aboutViewController = [[AboutViewController alloc] init];
if (aboutViewController != NULL) {
[self presentModalViewController:aboutViewController animated:YES];
}
}
All the shouldAutorotateToInterfaceOrientation are set to "landscapeRight"
I realise I'm probably doing something really stupid, but I can't figure out what it is... any help gratefully received!
If it's showing up in the wrong orientation, I'd say that you've got an issue in your XIB file for AboutViewController.
Did you create that XIB in a different orientation than your app is currently in? Look at the third tab on the property inspector -- is the autoresizing set up properly?
I have a viewcontroller, where I load subviews on. In those subviews I have a UIButton which will show a modalViewController. If I call the function on the main viewcontroller, I get the modal exactly in the middle as I want them to be, but if I call the exact same method in the view I've added as a subview the modal is presented somewhere on the right side of the screen. So now is my question: how can I present the modal on the super view instead? Or how do I put the modalview in center? Because the views I've added as subviews contains data which the modalpopup needs.
This is how I present the modal:
MapViewer *map = [[MapViewer alloc] init];
map.modalPresentationStyle = UIModalPresentationFormSheet;
[self presentModalViewController:map animated:YES];
[map release];
Hope somebody can help me with this.
Thanks in advance!
Edit:
Maybe useful to be more clear:
AppDelegate.m
-> MainWindow.m
-> OtherViewController.m
So I add an x amount of OtherViewControllers as subviews to MainWindow. The OtherViewController contains the function mentioned above. But the map needs to be displayed as a modal on the MainWindow, and not on the OtherViewController so it gets nicely centered etc.
One thing you might do is set the target of the UIButton object to the main view controller using setTarget:action: method.
Ok I've managed to get it working using the notificationcenter so I can call a method on the MainWindow from other views. So if anyone is asking the same question, have a look at the notificationcenter :D
I'd like to have a view appear when the user clicks a button. The hierarchy I have looks like this:
MainWindow
-UIView
--ScrollView
---ScrollView.pages = UIViews
----UIView (from above assignment)
----TextView
----InfoButton
pages is an NSMutableArry of pageController objects. These hook to a nib. These nibs are the pages that user flicks through in the scroll view.
The InfoButton click is wired up like this:
- (IBAction) infoButton_click:(id)sender{
topView topViewViewController *topView = [[topViewViewController alloc] initWithNibName:#"TopView" bundle:[NSBundle mainBundle]];
//[self.navigationController pushViewController: topViewView animated:YES];
//[self.view addSubview: topViewView.view];
[super.view addSubview: topViewView.view];
[topViewView release];
}
InfoButton is on one of the pages in the ScrollView. I've commented out different code that has been tried. None of it adds the view. Nothing happens. Is there a way to get TopView as the top view in the hierarchy?
Is your goal to add the view as a subview, or to slide on a new view using the navigation controller? I'm going to assume the latter for the moment.
- (IBAction)infoButton_click:(id)sender
{
TopViewController *topViewController = [[TopViewController alloc] initWithNibName:#"TopView" bundle:nil];
[self.navigationController pushViewController:topViewController animated:YES];
[topViewController release];
}
This is correct if you actually have a navigationController. Make sure you actually do. When "nothing happens" in Cocoa, it usually means something is nil. You should check in the debugger or with NSLog() to see if any of these values are nil. It is possible (even likely), that your parent has a navigationController, but you do not.
Classes should always have a leading capital. Do not create a variable called "view" that is of class "UIViewController". This is a sure path to suffering. Objective-C is a dynamic language with limited compiler checks on types. Naming things correctly is critical to effective programming in ObjC.
Based on your comment to a previous answer, you want to present a modal view. You do this by creating a new view "modalView" and calling [topView presentModalViewController:modalView animated:YES].
In a future version of the iPhone OS, which of course I would be unable to comment upon if it were under NDA, you might be able to present a modal view controller with a flip transition by setting a property on the view controller to be presented, which would probably be called modalTransitionStyle or somesuch.