I have two NIB's
ParentViewController.xib
ChildViewController.xib
ParentViewController.xib contains a UIView and a UIViewController.
ChildViewController.xib contains a UIButton
I want ChildViewController.xib to load in the ParentViewController.xib's UIView
I have done the following:
Created #property for UIView in ParentViewController
Connected File's Owner to UIView in ParentViewController
Set UIViewController in ParentViewController's NIB Name property to ChildViewController in Interface Builder
Set ChildViewController view property to UIView in ParentViewController
I was hoping this would load ChildViewController into my UIView in ParentViewController but no luck.
I did get the following warning, which could be the culprit:
'View Controller (Child View)' has both its 'NIB Name' property set and its 'view' outlet connected. This configuration is not supported.
I also have added additional code in ParentViewController's viewDidLoad():
- (void)viewDidLoad {
[super viewDidLoad];
ChildViewController *childViewController = [[ChildViewController alloc]initWithNibName:#"ChildViewController" bundle:nil];
childViewController.view = self.myView;
}
Any thoughts on why ChildViewController does not load in the UIView of ParentViewController?
Try this
[self.myview addSubview: childViewController.view];
instead of
childViewController.view = self.myView;
The alternative is to build the "embedded" view (!) in a Nib, say ChildView.xib, then instantiate it in the ParentViewController.xib (change the class in the Identity inspector). There is no need to programmatically [self.view addSubview:embeddedView] in the parent view controller's -viewDidLoad method.
I wrote up how we embed custom-view Nibs inside other Nibs in a longish blog post. The crux is overriding -awakeAfterUsingCoder: in the ChildView class, replacing the object loaded from the "parent" Nib with the one loaded from the "child" Nib.
Note that our custom controls subclass UIView, not UIViewController (see Apple's docs on Custom view controllers: "You should not use multiple custom view controllers to manage different portions of the same view hierarchy.")
Related
I have two UIViewController class, in first class I have a UIScrollView as a subview and I want to add this UIScrollView in another class as a subview .
You can add [view1 addSubView:view2];.if you added the UIScrollView on UIViewController add that controller view to other view on which you want to add.
I don't think this will work properly, once you added a UIView to one UIView I don't think it's proper to add it to another subview. You might need to explicitly call removeFromSuperview before adding it to another view. Ensure though that it's retained enough to be able to do that.
Make the UIScrollview as a property of viewController A .i.e by assigning it #property(nonatomic,retain) in the .h file of class A and synthesizing it in .m file of class A..
Further in class B create a instance of class A in B .h file eg: ViewController *VC1; and synthesize it in B's .m file
Now..in ViewController A when you are calling ViewController B (Typically when you are pushing)
Eg :
ViewControllerB *VC2 = [[ViewControllerB alloc]initWithNibName:#"ViewControllerB" bundle:nil];
VC2.VC1 = self;
[self navigationController pushViewCOntroller:VC2 animated:YES];
Now in Class B where you want the scrollView of Class A to be added ,
write the following in Class B
[ self.view addSubView:VC1.scrollView];
I need to push a UIView into my UINavigation controller. I am doing it by
[self.view addSubview:showContactFlow];
And on a button click in UIView I need to push another UIViewController over the UIView. From the UIView I am not able to access self.navigationcontroller How can I do this?
Edit:
I have set the UIView as the view of a new UIViewController I am pushing into, the before mentioned UIViewController . Now I would like to know, how to handle the UIView button event inside its UIViewController, in which's view it is set.
Add a UINavigationController ivar to the UIView and assign it to the main view controller's. Then you should be able to access it from the UIView.
Edit:
Your UIView subclass:
// CustomView.h
#interface CustomView: UIView {
// ...
// your variables
// ...
UINavigationController *navController;
}
#property (nonatomic, assign) UINavigationController *navController; // assign, because this class is not the owner of the controller
// custom methods
#end
// CustomView.m
#implementation Customview
// synthesize other properties
#synthesize navController;
// implementation of custom methods
// don't release the navigation controller in the dealloc method, your class doesn't own it
#end
Then before the [self.view addSubview:showContactFlow]; line just add [showContactFlow setNavController:[self navigationController]]; and then you should be able to access your hierarchy's navigation controller from your UIView and use it to push other UIViewControllers.
You should try to work with an MVC approach. So your controller has access to all that stuff and can keep pushing and popping views, so the view doesn't need to know too much about the controller.
Otherwise, and for this case you can solve it fast by using delegation. So:
showContactFlow.delegate = self;
[self.view addSubview:showContactFlow];
So later in the UIView, you can just say:
[self.delegate addSubview:self];
This is gonna work, but it's not likely to be the best approach you should use.
On button click, you can present a view controller like,
-(void)buttonFunction{
ThirdVC *third= [[ThirdVC alloc]initWithNibNme];......
[self presentViewController:third animated:NO];
}
Using Core animation you can make NavigationController's pushviewController like animation on writing code in ThirdVC's viewWillAppear: method.
where do you add the UIButton is it in showContactFlow view or in the ViewController's view??
In regard to the modalViewControllers issue the correct method is
[self presentModalViewController:viewController animated:YES];
the standard animation in upwards
I would like to create a main view controller in order to handle a custom navigation bar and its behavior.
Then, I would like to subclass this new class to use its behavior and link a "contentView" IBOutlet for each of my ViewControllers.
Here is my BaseViewController.xib:
TestViewController.xib: linking the "contentView" outlet for its parent
TestViewController.h: inherit from BaseViewController
#import "BaseViewController.h"
#interface TestViewController : BaseViewController
#end
TestViewController.m: should use outlets from TestViewController.xib
- (id)init
{
self = [super init];
if (self) {
[[NSBundle mainBundle] loadNibNamed:#"TestViewController"
owner:self
options:nil];
}
return self;
}
Obviously, I would like to have the green bar from MainViewController with the white view and the label from TestViewController, but it's actually not working, here is the result:
If in TestViewController.xib, I link the "view" outlet with a view, it's actually overriding this screen and I don't have the green bar from MainViewController, so I guess that my import is working, but I can't understand why it's not working with the contentView.
Any idea ?
Cheers!
Cyril
You will have to decide which controller should control the view with the content.
Either you have the base view controller control it - in which case you do not need to subclass it. Just add a subclass of UIView as a subview and do all the logic there. The view can also have its own nib file.
Or you subclass your base view controller - but then you cannot have a separate view controller nib. You can do all the view controller logic (data sources etc) in the subclass (which is also a view controller), but it will use the nib of the base view controller.
I have created a UITabBarController in my app delegate.
where each tab bar item holds a different UINavigationController that loads a custom UIViewController with a NIB (using -pushViewController:).
Inside one of the navigation controller, I load a custom UIView class with a custom NIB also.
This view is loaded multiple times inside the UIViewController.
The custom UIView has a UIButton, that on the event of touching it, I want to push a new UIViewController on the stack.
Problem is that I 'lost' the UINavigationController that holds the UIViewController.
I know I should use delegates, but haven't figured out who should which class should be the delegate.
Thanks in advance!
Neither .navigationController or .tabBarController will be available for a UIView or UIViewController that's been created but not pushed onto a stack
Either create a property on your View (or ViewController) class that is a UIViewController that is provided optionally after initialization or you could add a third argument to initWithNibName:bundle:
#interface CustomViewController : UIViewController
{
UIViewController *owner;
}
#property (nonatomic, assign) UIViewController* owner;
#end
Then in the owner ViewController:
CustomViewController *cvc = [[CustomViewController alloc] initWithNibNamed:nil bundle:nil];
cvc.owner = self;
It's too bad .parentViewController is read-only, this would be the sensible place for this.
You can get this using UIApplication class. Using this class you can find which viewController is placed at first. Here is the solution link for your problem.
I'm trying to essentially re-implement the UISplitViewController (because it has its limits), but when I create a UIViewController viewController, and then do an "[viewController.view addSubview contentViewController.view]" on it, to add a view that already has a view controller, that content view doesn't seem to get initialised by its view controller. I guess its view controller is getting detached or deallocated, is this the case?
Can you post your code?
UIViewController* myController = [[UIViewController alloc] initWithNibName:#"myView" bundle:nil];
myViewClass* cellView = (myViewClass*)cellController.view;
[self addSubview:cellView];
The above code will add a subview using the view in the "myView" nib.
Ensure that in the nib file -
The view is of myViewClass
the File's Owner is UIViewController and
its view outlet is connected to the view.