I have a UIButton in UIVIewController and I need to push it to the UIVIew when I press the button.But this gives me the warning of incompatible pointer type sending
how to do this
What I am doing this:
-(void)press{
displayView *disp=[[displayView alloc]init];
[self presentModalViewController:disp animated:No];
}
this gives me warning and crashes my application.
presentModalViewController accepts a UIViewController instance (not UIView). If you want to display a particular view, place it within a view controller first.
UIViewController *viewController = [[UIViewController alloc] init];
DisplayView *displayView = [[DisplayView alloc] init];
[viewController.view addSubview: displayView];
[self presentModalViewController:viewController animated:NO];
Related
I would like to know a method for navigating from one page to another page onclick .I
have tried
[self.navigationController
pushViewController:self
.objectNewlist
animated:YES];
but it is showing the error
Incompatible pointer types sending 'newlistplist *' to parameter of type 'UIViewController *'
my main class file is a subclass of UIViewController
and the second class is a subclass of UITableViewController
can any one help me out with this problem?
You can use
UIViewController *yourViewController = [[YourViewControllerClass alloc] initWithNibName:#"<name of xib>" bundle:nil];
[self presentModalViewController:yourViewController animated:YES];
[yourViewController release];
In case the new view is also to be created programmatically, you can do that in the viewDidLoad method of YourViewControllerClass and change the initialization to
UIViewController *yourViewController = [[YourViewControllerClass alloc] init];
In YourViewController when you wish to come back to previous view on some button action you can use
[self dismissModalViewControllerAnimated:YES];
Another way that you can do is
UIViewController *yourViewController = [[YourViewControllerClass alloc] init];
[self addSubview:[yourViewController view]];
and to remove the view you can use
[self.view removeFromSuperview];
-(void)onClickButton
{
ViewControllerClass *objViewControllerClass = [ViewControllerClass alloc] init] ;
[self presentModalViewController:objViewControllerClass animated:YES];
[objViewControllerClass release];
}
objViewControllerClass (object of another class)
I have a UIView (menuView in code below) of size 320x218 inside a view. I want to load a navigation controller into this view. Im using the following code to do that:
MenuViewController *menuController = [[MenuViewController alloc] initWithNibName:#"MenuViewController" bundle:nil];
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:menuController];
navigationController.navigationBarHidden = YES;
[menuView addSubview:navigationController.view];
[menuController release];
[navigationController release];
When I execute it, the root view is not displayed in that view. Only a navigation bar is displayed and the rest of the view is empty.
Edit:
I just placed an NSLog() in both initWithNibName: and viewDidLoad: of MenuViewController. The one in initWithNibName: gets called but the one in viewDidLoad: doesn't :S
Update:
I tried to push menuController to my navigationController thinking since its not appearing, it might not be on the stack. Exception:
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Pushing the same view controller instance more than once is not supported
call layoutsubviews do work.
[super loadView];
[self.view addSubview:navigationController.view];
[navigationController.view layoutSubviews];
I found the answer here:
UIViewController -viewDidLoad not being called
I had to add these lines of code after -initWithRootViewController in order to load the view of my root view Controller:
navigationController.navigationBarHidden = YES;
[navigationController setView:menuController.view];
You should not add the navigationViewController as an subview To your MenuViewController.
As the navigationViewController already already holds the MenuViewController.
Just display the navigationViewController.
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
// Override point for customization after application launch.
ViewController *viewController = [[[ViewController alloc] initWithNibName:#"ViewController" bundle:nil] autorelease];
navController = [[UINavigationController alloc]initWithRootViewController:viewController];
self.window.rootViewController = self.navController;
Try this code in your appdelegate method
I've been attempting to figure this out for a while now, but I'm up to a point where I can't seem to solve my problem from reading other Q&As. I'm trying to get the active UIViewController in a UINavigationController to send popViewController/pushViewController messages to the UINavigationController, but I cannot figure it out. I'm probably doing something rather stupid that is causing it to break. The structure should be like this, but even then I'm not sure if I've done that right.
mainController
primaryNavigationController
firstViewController
secondViewController
both firstViewController and secondViewController are a subclass
mainController.m
firstViewController = [[FirstTestViewController alloc] init];
secondViewController = [[FirstTestViewController alloc] init];
primaryNavigationController = [[UINavigationController alloc]
initWithRootViewController:firstViewController];
[primaryNavigationController.view setFrame:CGRectMake(0,0,320i,409)];
[self.view addSubview:[primaryNavigationController view]];
[primaryNavigationController.navigationBar setFrame:CGRectMake(0,0,20,44)];
primaryNavigationController.navigationBar.tintColor = [UIColor blackColor];
How can I tell primaryNavigationController to push/pop a VC from within the firstTestViewController subclass?
You would allocate the second view controller within your first view controller (because you don't need it before):
secondViewController = [[FirstTestViewController alloc] init];
[self.navigationController pushViewController:secondViewController animated:YES];
[secondViewController release];
The SDK includes many sample projects that involve a navigation controller and show you how to do this.
I have a button that I'm creating in a UIViewController like so:
TOLoginButton* button = [[[TOLoginButton alloc] initWithFrame:CGRectMake(60,180,200,40)] autorelease];
[self.view addSubview:button];
The button is a UIControl and I'm trying to call another UIViewController from within the touchUpInside method, below is what I have but it doesn't work:
- (void)touchUpInside {
MyViewController *viewController = [[MyViewController alloc] init];
[super.view addSubview:viewController.view ];
}
I'm basically trying to call this viewController once my button is pressed.
So viewController1 has the button on it and once the button is pressed I want to do something like [viewController1.view addSubview:viewController2.view].
assuming the new UIViewController is full-screen, the more usual thing to do is
[self presentModalViewController:viewController animated:YES];
or if you're using a navigation controller
[self.navigationController pushViewController:viewController animated:YES];
I am having a problem with the following code:
MyViewController *aController = [[MyViewController alloc] initWithNibName:#"MyView" bundle:nil];
self.myController = aController;
myController.title = #"List";
[aController release];
UINavigationController *bController = [[UINavigationController alloc] initWithRootViewController:myController];
self.rootNavController = bController;
[bController release];
[self.view addSubview:rootNavController.view];
When I run my program I get the problem where my view for myController is repeated along the y-axis all the way until the bottom of the screen. If I add myController.view to the root view it works ok. I only have the problem when I add myController as the rootViewController of my navigation controller.
Thanks in advance for any help!
The default navigation controller project template defines -applicationDidFinishLaunching this way:
- (void)applicationDidFinishLaunching:(UIApplication *)application {
// Override point for customization after app launch
[window addSubview:[navigationController view]];
[window makeKeyAndVisible];
}
I realize you're instantiating your nav controller with alloc init rather than getting it from the XIB, however, it seems you ought to be adding it to the window's view tree.
Where is the code you are showing being called from?
The problem was that I did not specify the frame. Without specifying a frame using CGRectMake the view controller was just filling the entire space.
The line I needed was something like this:
rootNavController.view.frame = CGRectMake(0, 0, 320, 431);
Try this:
MyViewController *aController = [[MyViewController alloc] initWithNibName:#"MyView" bundle:nil];
self.myController = aController;
[aController release];
UINavigationController *bController = [[UINavigationController alloc] initWithRootViewController:myController];
self.rootNavController = bController;
[bController release];
[window addSubview:rootNavController.view];//<--What are you adding the navigationController to??? Another ViewController? TabController? or Window?
Then in the -(void)viewDidLoad method of MyViewController you can put
self.navigationItem.title = #"List";