I have view controller and implement like this :
loginViewController = [[LoginViewController alloc] init];
loginViewController.delegate = self;
[self.view addSubview:loginViewController.view];
[self addChildViewController:loginViewController];
[loginViewController didMoveToParentViewController:self];
Inside loginViewController, I want to show another view controller but I implement like this :
otherViewController = [[OtherViewController alloc] initWithNibName:nil bundle:nil];
otherViewController.delegate = self;
[self presentViewController:otherViewController animated:YES completion:nil];
Everytime I done with otherViewController and want to dismiss the view controller [self dismissViewControllerAnimated:YES completion:nil];
it restarted from the beginning and not showing the loginViewController. I tried to check using Debug View Hierarchy and got that no loginViewController is implemented when I called presentViewController:otherViewController
Why is this happened ?
Related
I want to make the bottom button seen in the storyboard on the right to take the user to the signupstoryboard.storyboard/signupController seen on the left when the user taps on the button. How can that be done?
{ - (IBAction)signupbutton:(id)sender; SignupController *signUpView = [self.storyboard instantiateViewControllerWithIdentifier:#"signup"]; [self presentViewController:signUpView animated:YES completion:nil]; }
You'll have to do it by code.
- (IBAction)buttonTapped
{
NSString *storyboardName = #"signupstoryboard";
UIViewController *nextViewController = [[UIStoryboard storyboardWithName:storyboardName bundle:nil] instantiateInitialViewController];
// if you are using a navigation controller to push it:
[self.navigationController pushViewController:nextViewController animated:YES];
// otherwise if you are presenting it modally:
[self presentViewController:nextViewController animated:YES completion:nil]
}
In your .m (at the top)
#import "signupController.h"
In your button action method (Don't forget to set the storyboard id for your signupController as signup
- (IBAction)signupbutton:(id)sender
{
SignupController *signUpView = [self.storyboard instantiateViewControllerWithIdentifier:#"signup"]; [self presentViewController:signUpView animated:YES completion:nil];
}
Thats it
I have a view controller named ViewController.
ViewController displays a UIView that has a button on it, which allows me to advance to a second view controller - SecondViewController.
SecondViewController also has a button on it, which allows me to advance to a third view controller.
However, I am having trouble displaying ThirdViewController. When I tap the button in SecondViewController it throws an error:
Warning: Attempt to present ... on ... whose view is not in the window hierarchy!
I have been to a bunch of other sites and posts that address this issue, but cannot seem to find a working solution. I have implemented quite a few solutions, but none seem to work.
Here is my code:
- (void)secondaryView:(UIView *)secondaryView
{
UIView *theView = secondaryView;
UIViewController *viewController = [[UIViewController alloc] init];
viewController.view.frame = [UIScreen mainScreen].bounds;
[viewController.view addSubview:theView];
viewController.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[self presentViewController:viewController animated:YES completion:nil];
}
secondaryView is a UIView that I am constructing elsewhere in the application. I add it to the viewController then present the viewController.
Is there any way to dynamically create UIViewControllers, add a UIView to each one, and add them to the window hierarchy?
If you can use navigation in your ViewControllers, you can try the below code
In the place where you call the firstViewController,
-(void)callFirst
{
FirstViewController *first = [FirstViewController alloc] init];
UINavigationController *navigationController = [UINavigationController alloc] initWithRootViewController:first];
navigationController.modalPresentaionStyle = UIModalPresenationFormSheet;
[self presentModalViewController:navigationController animated:YES];
}
And in the FirstViewController button action ,you can write
-(void)callSec
{
SecondViewController *sec = [SecondViewController alloc] init];
[self.NavigationController pushViewController:sec animated:YES];
}
And in SecondViewController you can do the same
-(void)callThird
{
ThirdViewController *third = [ThirdViewController alloc] init];
[self.NavigationController pushViewController:third animated:YES];
}
Try this...And in these ViewControllers you can do whatever coding you want to meet the requirement like
-(void)viewDidLoad
{
UIView *newView = [[UIView alloc] initWithFrame:CGRectMake(20,20,400,400)];
newView.backGroundColor = [UIColor redColor];
[self.view addSubView:newView];
}
I am facing the problem that when I push my viewcontroller in the navigationcontroller all it does is changing the navigationbar and showing the standard background but no view is to be seen. My code for pushing the viewcontroller into the navigationcontroller looks like:
Viewcontroller1 *viewController = [[Viewcontroller1 alloc] autorelease];
[[self navigationController] pushViewController:viewController animated:YES];
But, if I initialise the viewcontroller by creating IBOutlets for it, it works just fine. But the reason why I am not doing that is because I later on needs to pass some parameters to the class on initialization.
Thanks for your time.
You have to initialise your view like
if you have xib then
Viewcontroller1 *viewController = [[[Viewcontroller1 alloc] initWithNibName:#"Viewcontroller1" bundle:nil]autorelease];
[[self navigationController] pushViewController:viewController animated:YES];
if you haven't xib
Viewcontroller1 *viewController = [[[Viewcontroller1 alloc] init]autorelease];
[[self navigationController] pushViewController:viewController animated:YES];
I present a modalViewController that is actually a navigation controller with one view, and a custom navigation bar. The modal view appears fine as expected, but when I attempt to remove it from view using [self dismissModalViewControllerAnimated:YES], I am hitting a "-[UINavigationController modalViewController]: message sent to deallocated instance". Can't seem to figure this out. Any ideas?
Instantiating the ModalViewController:
// Make a navigation controller and add the view inside it
MyViewController *evc=[[MyViewController alloc] initWithNibName:#"MyViewController" bundle:nil];
//UINavigationController *nvc = [[UINavigationController alloc] initWithRootViewController:evc];
UINib *nib = [UINib nibWithNibName:#"UINavigationBarWithBackgroundImage" bundle:nil];
UINavigationController *nvc = [[nib instantiateWithOwner:nil options:nil] objectAtIndex:0];
[nvc setViewControllers:[NSArray arrayWithObject:evc]];
evc.delegate=self;
[evc release];
[self presentModalViewController:nvc animated:YES];
[nvc release];
and trying to remove it. This is where the error comes in:
[self dismissModalViewControllerAnimated:YES];
Not sure about this, but try it anyway:
Remove
[nvc release]
and see if
[self dismissModalViewControllerAnimated:YES];
now works.
Is there a reason you are loading two seperate nibs to show this modal? You do not need to load a nib containing a navigation controller to get this working.
Try something like this:
// Make a navigation controller and add the view inside it
MyViewController *evc= [[MyViewController alloc] initWithNibName:#"MyViewController" bundle:nil];
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:evc];
evc.delegate=self;
[self presentModalViewController:navController animated:YES];
[evc release];
[navController release];
I am working on a small app, according to the requirement the app should have a tabBarItem with 3 items. For this I have programmatically created the tabBarController in the AppDelegate.m file and added the 3 different viewControllers, instantiated them and everything is working good. I see the tabBarItems and all views are working. In one of the views lets say in SecondViewController I show a popOverController where I used a UITableView and populate it with items. When I click one of the items it should show another view lets say sendFeedback. Until there everything is working fine, but as soon as this sendFeedback is presented as the modal view, it occupies the whole app i.e it hides the tabBarItem.
I present the important pieces of code here for review:
AppDelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
// Override point for customization after application launch.
UIViewController *viewController1 = [[FirstViewController alloc] initWithNibName:#"FirstViewController" bundle:nil];
viewController1.title = #"First";
UIViewController *viewController2 = [[SecondViewController alloc] initWithNibName:#"SecondViewController" bundle:nil];
viewController2.title = #"Second";
UITableViewController *tableView3 = [[tableViewController alloc]initWithNibName:#"tableViewController" bundle:nil];
tableView3.title = #"Third";
self.tabBarController = [[UITabBarController alloc] init];
self.tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2, tableView3 ,nil];
self.tabBarController.delegate = self;
self.window.rootViewController = self.tabBarController;
[self.window makeKeyAndVisible];
[viewController1 release];
[viewController2 release];
[tableView3 release];
return YES;
}
In my popOverViewController.m file I am checking which row is selected in the table according to that I present the view
#pragma mark - TableView Delegate Methods
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
sendFeedback *sendEmailViewController = [[sendFeedback alloc]initWithNibName:#"sendFeedback" bundle:nil];
downLoad *downloadFilelViewController = [[downLoad alloc]initWithNibName:#"downLoad" bundle:nil];
if (indexPath.row == 0)
[self presentModalViewController:sendEmailViewController animated:YES];
else
[self presentModalViewController:downloadFilelViewController animated:YES];
}
Can anyone guide me how to overcome this with the multiple views. In case if anyone requires more information from my side I would be glad to provide.
NOTE: It is the same with the other view (downLoad) as well
EDIT: Here is how I am initializing my PopOverController in the AppDelegate.m file
- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController
{
if([viewController isKindOfClass:[SecondViewController class]]){
NSInteger index = [[self tabBarController] selectedIndex];
CGRect buttonFrame = [[[[[self tabBarController] tabBar] subviews] objectAtIndex:index+1] frame];
PopOverViewController *popoverView = [PopOverViewController new];
popoverView.contentSizeForViewInPopover = CGSizeMake(250, 85);
popover = [[UIPopoverController alloc]initWithContentViewController:popoverView];
NSLog(#"X:%f Y:%f",buttonFrame.origin.x,buttonFrame.origin.y);
[popover presentPopoverFromRect:buttonFrame inView:self.tabBarController.tabBar permittedArrowDirections:UIPopoverArrowDirectionDown animated:YES];
}
Thanks
Modal view controllers are used to "block" your application and fulfill a task before you can proceed. So modal view controllers are not what you want to use.
Instead wrap your controllers which have to be shown in the popover in a navigation controller. In the tableView:didSelectRowAtIndexPath: method you can push the corresponding view controller to the navigation stack.
To slove your problem:
At the place where you create the popovercontroller initialize it with a new UINavigationController. And the navigation controller you have to initialize with a rootviewcontroller namely PopOverViewController.m.
PopOverController *popoverContentController = [[PopOverController alloc] init];
UINavigationController *navcon = [[UINavigationController alloc] initWithRootViewController:popoverContentController];
popoverController = [[UIPopoverController alloc] initWithContentViewController:popoverContentController];
And in PopOverController.m
if (indexPath.row == 0)
[self.navigationController pushViewController:sendEmailViewController animated:YES];
else
[self.navigationController pushViewController:downloadFilelViewController animated:YES];