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 am trying to navigate from one page to another on a button click in a facebook appliaction.
I am using
registerUser=[[RegisterPage alloc]initWithNibName:#"RegisterPage" bundle:nil];
[self presentModalViewController :registerUser animated:YES];
for presenting the next view after getting response from facebook.
But it is not showing the next view. It works fine in all other places where I used to present other views.
Anyone have idea about this issue?
What exactly is 'self' here? Is it a viewcontroller? Or just a UIView?
I think this'll only work if self is a viewcontroller or some subclass of it.
My code to present a view controller is somewhat like yours (without a nib):
ViewController *controller = [[ViewController alloc] initWithNibName:nil bundle:nil];
[controller setModalTransitionStyle:UIModalTransitionStyleCoverVertical];
[self presentModalViewController:controller animated:YES];
[controller release];
And to present a navigation controller it's like this (without a nib):
ViewController *controller = [[ViewController alloc] initWithNibName:nil bundle:nil];
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:controller];
[navController setModalTransitionStyle:UIModalTransitionStyleCoverVertical];
[self presentModalViewController:navController animated:YES];
[navController release];
[controller release];
Sometimes simply copying someones code helps.
thanks for everyones reply.i have solved it after a long fight.i just dismissed the view before pesenting the next view and set dismissmodalviewcontrollerAnimated to NO.[self dismissModalViewControllerAnimated:NO];
nextview = [[LoginPage alloc]initWithNibName:#"LoginPage" bundle:nil];
[self presentModalViewController: nextview animated:YES];hope this help someone like me
In my app, I'm presenting a modalviewcontroller as follows and I'm not able to change the navigationbar's title or any of its properties for that matter.
fullListTopCompanies *fullListTopCompaniesInstance = [[fullListTopCompanies alloc] initWithNibName:#"fullListTopCompanies" bundle:nil];
UINavigationController *cntrol = [[UINavigationController alloc] initWithRootViewController:fullListTopCompaniesInstance];
[fullListTopCompaniesInstance setTitle:#"TEST"];
UIBarButtonItem *submit = [[UIBarButtonItem alloc]
initWithBarButtonSystemItem:UIBarButtonSystemItemDone
target:self
action:#selector(displayViewForPosts)];
fullListTopCompaniesInstance.navigationItem.rightBarButtonItem = submit;
[submit release];
[self presentModalViewController:cntrol animated:YES];
[cntrol release];
I tried instantiating application delegate and assigning its navigationcontroller to local navigationcontroller instance but no use.
Somehow that navigationcontroller is not accessible. It can't be accessed by using "self.navigationitem". Whenever I present modalviewcontroller with the navigationcontroller, this navigation comes below the actual navigationcontroller.
For Example, if you are trying to set title of navigation bar for the ViewController called "ABCViewController", then add
self.Title = #"";
in viewWillAppear Method of the ABCViewController and try to rebuild and Run.
Hope this helps. :)
Whenever I present modalviewcontroller with the navigationcontroller, this navigation comes below the actual navigationcontroller.
That problem is because calling presentModalViewController: on self, you should call it on self.navigationController that way the navigation controller won't be shown below the other one.
As to why you can't set the navigationController's properties, I don't know. It looks Ok to me. But I expect it is because you are setting the properties before viewDidLoad is called by the nib-loader. I think I remember having problems like this myself a long time ago.
You should set the title etc. in the UIViewController subclass's viewDidLoad method and I think you worries will be over.
I've created a simple view based app with xcode template, then i've added your code and it's working for me...
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
// Add the view controller's view to the window and display.
TestViewController *fullListTopCompaniesInstance = [[TestViewController alloc] initWithNibName:#"TestViewController" bundle:nil];
UINavigationController *cntrol = [[UINavigationController alloc] initWithRootViewController:fullListTopCompaniesInstance];
[fullListTopCompaniesInstance setTitle:#"TEST"];
UIBarButtonItem *submit = [[UIBarButtonItem alloc]
initWithBarButtonSystemItem:UIBarButtonSystemItemDone
target:self
action:#selector(displayViewForPosts)];
fullListTopCompaniesInstance.navigationItem.rightBarButtonItem = submit;
[window addSubview:viewController.view];
[window makeKeyAndVisible];
[viewController presentModalViewController:cntrol animated:YES];
[cntrol release];
[submit release];
return YES;
}
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 have an application where I need to remove one view from the stack of a UINavigationController and replace it with another. The situation is that the first view creates an editable item and then replaces itself with an editor for the item. When I do the obvious solution within the first view:
MyEditViewController *mevc = [[MYEditViewController alloc] initWithGizmo: gizmo];
[self retain];
[self.navigationController popViewControllerAnimated: NO];
[self.navigationController pushViewController: mevc animated: YES];
[self release];
I get very strange behavior. Usually the editor view will appear, but if I try to use the back button on the nav bar I get extra screens, some blank, and some just screwed up. The title becomes random too. It is like the nav stack is completely hosed.
What would be a better approach to this problem?
Thanks,
Matt
I've discovered you don't need to manually mess with the viewControllers property at all. Basically there are 2 tricky things about this.
self.navigationController will return nil if self is not currently on the navigation controller's stack. So save it to a local variable before you lose access to it.
You must retain (and properly release) self or the object who owns the method you are in will be deallocated, causing strangeness.
Once you do that prep, then just pop and push as normal. This code will instantly replace the top controller with another.
// locally store the navigation controller since
// self.navigationController will be nil once we are popped
UINavigationController *navController = self.navigationController;
// retain ourselves so that the controller will still exist once it's popped off
[[self retain] autorelease];
// Pop this controller and replace with another
[navController popViewControllerAnimated:NO];
[navController pushViewController:someViewController animated:NO];
In that last line if you change the animated to YES, then the new screen will actually animate in and the controller you just popped will animate out. Looks pretty nice!
The following approach seems nicer to me, and also works well with ARC:
UIViewController *newVC = [[UIViewController alloc] init];
// Replace the current view controller
NSMutableArray *viewControllers = [NSMutableArray arrayWithArray:[[self navigationController] viewControllers]];
[viewControllers removeLastObject];
[viewControllers addObject:newVC];
[[self navigationController] setViewControllers:viewControllers animated:YES];
From experience, you're going to have to fiddle with the UINavigationController's viewControllers property directly. Something like this should work:
MyEditViewController *mevc = [[MYEditViewController alloc] initWithGizmo: gizmo];
[[self retain] autorelease];
NSMutableArray *controllers = [[self.navigationController.viewControllers mutableCopy] autorelease];
[controllers removeLastObject];
self.navigationController.viewControllers = controllers;
[self.navigationController pushViewController:mevc animated: YES];
Note: I changed the retain/release to a retain/autorelease as that's just generally more robust - if an exception occurs between the retain/release you'll leak self, but autorelease takes care of that.
After much effort (and tweaking the code from Kevin), I finally figured out how to do this in the view controller that is being popped from the stack. The problem that I was having was that self.navigationController was returning nil after I removed the last object from the controllers array. I think it was due to this line in the documentation for
UIViewController on the instance method navigationController
"Only returns a navigation controller if the view controller is in its stack."
I think that once the current view controller is removed from the stack, its navigationController method will return nil.
Here is the adjusted code that works:
UINavigationController *navController = self.navigationController;
MyEditViewController *mevc = [[MYEditViewController alloc] initWithGizmo: gizmo];
NSMutableArray *controllers = [[self.navigationController.viewControllers mutableCopy] autorelease];
[controllers removeLastObject];
navController.viewControllers = controllers;
[navController pushViewController:mevc animated: YES];
Thanks, this was exactly what I needed. I also put this in an animation to get the page curl:
MyEditViewController *mevc = [[MYEditViewController alloc] initWithGizmo: gizmo];
UINavigationController *navController = self.navigationController;
[[self retain] autorelease];
[UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration: 0.7];
[UIView setAnimationTransition:<#UIViewAnimationTransitionCurlDown#> forView:navController.view cache:NO];
[navController popViewControllerAnimated:NO];
[navController pushViewController:mevc animated:NO];
[UIView commitAnimations];
0.6 duration is fast, good for 3GS and newer, 0.8 is still a bit too fast for 3G..
Johan
If you want to show any other view controller by popToRootViewController then you need to do following:
UIViewController *newVC = [[WelcomeScreenVC alloc] initWithNibName:#"WelcomeScreenVC" bundle:[NSBundle mainBundle]];
NSMutableArray *viewControllers = [NSMutableArray arrayWithArray:[[self navigationController] viewControllers]];
[viewControllers removeAllObjects];
[viewControllers addObject:newVC];
[[self navigationController] setViewControllers:viewControllers animated:NO];
Now, all your previous stack will be removed and new stack will be created with your required rootViewController.
I had to do a similar thing recently and based my solution on Michaels answer. In my case I had to remove two View Controllers from the Navigation Stack and then add a new View Controller on. Calling [controllers removeLastObject]; twice, worked fine in my case.
UINavigationController *navController = self.navigationController;
// retain ourselves so that the controller will still exist once it's popped off
[[self retain] autorelease];
searchViewController = [[SearchViewController alloc] init];
NSMutableArray *controllers = [[self.navigationController.viewControllers mutableCopy] autorelease];
[controllers removeLastObject];
// In my case I want to go up two, then push one..
[controllers removeLastObject];
navController.viewControllers = controllers;
NSLog(#"controllers: %#",controllers);
controllers = nil;
[navController pushViewController:searchViewController animated: NO];
This UINavigationController instance method might work...
Pops view controllers until the specified view controller is the top view controller and then updates the display.
- (NSArray *)popToViewController:(UIViewController *)viewController animated:(BOOL)animated
Here is another approach that doesn't require directly messing with the viewControllers array. Check if the controller has been pop'd yet, if so push it.
TasksViewController *taskViewController = [[TasksViewController alloc] initWithNibName:nil bundle:nil];
if ([navigationController.viewControllers indexOfObject:taskViewController] == NSNotFound)
{
[navigationController pushViewController:taskViewController animated:animated];
}
else
{
[navigationController popToViewController:taskViewController animated:animated];
}
NSMutableArray *controllers = [self.navigationController.viewControllers mutableCopy];
for(int i=0;i<controllers.count;i++){
[controllers removeLastObject];
}
self.navigationController.viewControllers = controllers;
My favorite way to do it is with a category on UINavigationController. The following should work:
UINavigationController+Helpers.h
#import
#interface UINavigationController (Helpers)
- (UIViewController*) replaceTopViewControllerWithViewController: (UIViewController*) controller;
#end
UINavigationController+Helpers.m
#import "UINavigationController+Helpers.h"
#implementation UINavigationController (Helpers)
- (UIViewController*) replaceTopViewControllerWithViewController: (UIViewController*) controller {
UIViewController* topController = self.viewControllers.lastObject;
[[topController retain] autorelease];
UIViewController* poppedViewController = [self popViewControllerAnimated:NO];
[self pushViewController:controller animated:NO];
return poppedViewController;
}
#end
Then from your view controller, you can replace the top view with a new by like this:
[self.navigationController replaceTopViewControllerWithViewController: newController];
You can check with navigation view controllers array which you give you all view controllers that you have added in navigation stack. By using that array you can back navigate to specific view controller.
For monotouch / xamarin IOS:
inside UISplitViewController class;
UINavigationController mainNav = this._navController;
//List<UIViewController> controllers = mainNav.ViewControllers.ToList();
mainNav.ViewControllers = new UIViewController[] { };
mainNav.PushViewController(detail, true);//to have the animation
Alternatively,
You can use category to avoid self.navigationController to be nil after popViewControllerAnimated
just pop and push, it's easy to understand, don't need to access viewControllers....
// UINavigationController+Helper.h
#interface UINavigationController (Helper)
- (UIViewController*) popThenPushViewController:(UIViewController *)viewController animated:(BOOL)animated;
#end
// UINavigationController+Helper.m
#implementation UINavigationController (Helper)
- (UIViewController*) popThenPushViewController:(UIViewController *)viewController animated:(BOOL)animated
{
UIViewController *v =[self popViewControllerAnimated:NO];
[self pushViewController:viewController animated:animated];
return v;
}
#end
In your ViewController
// #import "UINavigationController+Helper.h"
// invoke in your code
UIViewController *v= [[MyNewViewController alloc] init];
[self.navigationController popThenPushViewController:v animated:YES];
RELEASE_SAFELY(v);
Not exactly the answer but might be of help in some scenarios (mine for example):
If you need to pop viewcontroller C and go to B (out of stack) instead of A (the one bellow C), it's possible to push B before C, and have all 3 on the stack. By keeping the B push invisible, and by choosing whether to pop only C or C and B altogether, you can achieve the same effect.
initial problem
A -> C (I want to pop C and show B, out of stack)
possible solution
A -> B (pushed invisible) -> C (when I pop C, I choose to show B or also pop it)
I use this solution to keep the animation.
[self.navigationController pushViewController:controller animated:YES];
NSMutableArray *newControllers = [NSMutableArray arrayWithArray:self.navigationController.viewControllers];
[newControllers removeObject:newControllers[newControllers.count - 2]];
[self.navigationController setViewControllers:newControllers];