I want to click the back button in the navigationBar programmatically in my second view.
It's call it this way:
Archiv *archiv = [[Archiv alloc] initWithNibName:#"Archiv" bundle:nil];
archiv.title = [NSString stringWithFormat:#"Archiv %#", [sender titleForState:UIControlStateNormal]];
[self.navigationController pushViewController:archiv animated:YES];
And now i'm in the Archiv.m and after a specific event i want to get back to the first controller (without clicking the back button) - instead i want to perform the click programmatically.
Is it possible for this case?
Helpful would be to know which method is called if i click on this button, so don't even have to perform the click.
yes you can
this will take you to your first view controller
[self.navigationController popToRootViewControllerAnimated:YES];
Related
I have looked around but haven't found a satisfying answer. My problem is that whenever I call popToRootViewControllerAnimated:(BOOL) it is not doing anything. When I NSLog it, it logs (null).
Let me back up a bit here. I have a table view controller that has a list of things, at the navigation bar up top there is an option to add and that takes me to a new view controller with a segue "Present as PopOver" which gets rid of the principal or main navigation bar. So I made one manually and added 2 bar button items "Cancel" and "Add". When "Cancel" is tapped, it should take the user back to the table view controller and discard changes, when "Add" button is tapped, it should also take user back to the previous table view controller with the changes. But it's not doing anything.
Here is my code.
- (IBAction)cancelButton:(UIBarButtonItem *)sender {
UINavigationController * navigationController = self.navigationController;
NSLog(#"%#", navigationController);
NSLog(#"cancel tapped though");
ListingTableViewController *rootController = [[ListingTableViewController alloc] init];
[navigationController popToRootViewControllerAnimated:NO];
[navigationController pushViewController:rootController animated:YES];
}
As far as the segue, this view controller is not connected to anything, or should I connect it? This is a noobish question indeed. Here is my xcode screenshot.
Check this link for the screenshot of the storyboard
http://i.stack.imgur.com/lqnCF.png
You must call
- (IBAction)cancelButton:(UIBarButtonItem *)sender {
NSLog(#"cancel tapped though");
[self dismissViewControllerAnimated:YES completion:nil];
}
instead of popToRootViewControllerAnimated because your VC presented and not pushed!
When presenting a view, you are not pushing it in your navigation controller, but having it presented. To dismiss it, try using [self.presentingViewController dismissViewControllerAnimated:NO completion:nil].
I am working with Objective C using xcode and SUP 2.1.3 as backend.I am verymuch new to the technology.I have created a project with master detail as the design template.In that in the detail view I am using a popup to display some details.And also I have a button over there. When I click in this button I have to go to the next UIView in popup itself.
For that I have created two more UIViewControllers (viewController1 and viewController2).
And in detailview I have written the code for a popup like,
-(void)popupAgain
{
ViewController1 *viewController = [[ViewController1 alloc] initWithNibName:#"ViewController1" bundle:nil];
viewController.modalPresentationStyle = UIModalPresentationFormSheet;
[self presentModalViewController:viewController animated:YES];
[viewController release];
}
And I put a button over their in that popup, I am calling the next popupAgain funcion to get viewController2 like
-(IBAction)next:(id)sender
{
[self popupAgain];
}
-(void)popupAgain
{
ViewController2 *viewController_new = [[ViewController2 alloc] initWithNibName:#"ViewController2" bundle:nil];
viewController_new.modalPresentationStyle = UIModalPresentationFormSheet;
[self presentModalViewController:viewController animated:YES];
[viewController_new release];
}
Now the problem is when I click on the next button I have to dismiss the first popup and display the second.But I am not able to dissmiss the first one even if I am writing the code [self dissmissModalViewControllerAnimated:YES]; in the action for next button like,
-(IBAction)next:(id)sender
{
[self dissmissModalViewControllerAnimated:YES];
[self popupAgain];
}
Please anyone help me to solve this issue.Or do you have any other idea regarding this?I am very much new to the technology.Thank you very much for any help in advance.
See here:
http://developer.apple.com/library/ios/#featuredarticles/ViewControllerPGforiPhoneOS/ModalViewControllers/ModalViewControllers.html#//apple_ref/doc/uid/TP40007457-CH111-SW1
Dismissing a Presented View Controller
When it comes time to dismiss a presented view controller, the preferred approach is to let the presenting view controller dismiss it. In other words, whenever possible, the same view controller that presented the view controller should also take responsibility for dismissing it. Although there are several techniques for notifying the presenting view controller that its presented view controller should be dismissed, the preferred technique is delegation. For more information, see “Using Delegation to Communicate with Other Controllers.”
I want to force the back button of my navigationViewController to call the dissmissmodalViewController to prevent the fact that the user tap the back button to fast and the app send a message to a deallocated instance... how can I solve?
Thanks
You question feels a bit odd because the back button typically does something like:
[self.navigationController popViewControllerAnimated:YES];
I'm not sure how that is impacting any modal view controllers. If you really need to change its functionality, then you would basically hide the built in back button and replace it with your own custom one kind of like this: (put this in viewDidLoad)
[self.navigationItem setHidesBackButton:YES]; //hide the built in button
//create your new button
UIBarButtonItem *b = [[UIBarButtonItem alloc]initWithTitle:#"new-back-button" style:UIBarButtonItemStyleDone target:self action:#selector(customBackButton:)];
//set the new button
self.navigationItem.leftBarButtonItem = b;
then setup your new method to handle the button push
- (IBAction)customBackButton:(id)sender {
[self.navigationController popViewControllerAnimated:YES];
}
good luck with your project.
I have an tabbar but i want to switch to another view on a tap so i did
UIViewController *controller;
switch (item.tag) {
case 0:
NSLog(#"1");
controller = [[2012ViewController alloc] init];
[self.navigationController pushViewController:controller
animated:YES];
break;
But when i tap it it goes to 2012ViewController (the 'homepage') but a back button appears. But it needs to go to the 2012ViewController without showing the backbutton cause when i click on the back button on the 2012ViewController screens it's
2012ViewController > (back button) 'The screen where i tapped the back button' > (back button) 2012ViewController
If I understood correctly your problem you should simply call
[self.navigationController popViewControllerAnimated:YES];
This will pop your view controller from the navigation controller stack. This way you'll come back to the first view controller instead of pushing a new one.
I have a problem about viewController. I created a program What is viewController based applicaiton. There is 4 button on mainViewController. I used this code for calling mainviewController
-(void) applicationDidFinishLaunching:(UIApplication *)application{
self.window.rootViewController = self.viewController;
[self.window makeKeyAndVisible];
}
Then click to any button on homePage , I go to the other viewController. This code for call another viewController belong
-(IBAction)clickCalendarButton{
calendarButton.selected=YES;
[calendarButton
setImage:[UIImage imageNamed:#"afvalkalender_pressed.png"] forState:(UIControlStateHighlighted+UIControlStateSelected)];
GarbageCalendar *garbageCalendar = [[GarbageCalendar alloc] initWithNibName:#"GarbageCalendar" bundle:nil];
[self presentModalViewController:garbageCalendar animated:YES];
}
And then I want to go home page from another viewController. But I didn' go home page viewController.
Create button on detail view controller, which calls something like this:
- (IBAction)goBack {
[self dismissModalViewControllerAnimated:YES];
}
If you want to keep your current UI design, based on modal view controllers, then I think you should ensure that your other view controllers have got a button that does the dismiss of the view. Say, e.g., a "Back" or "Done" button. When you click on that button, a delegate method is called that executes: [self dismissModalViewControllerAnimated:YES];
Look also at this document for more info, section "Dismissing a Modal View Controller".
If you would like to consider alternative approaches to your UI, you could look into using a UINavigationController, which would make your life a little bit easier with navigating back from one controller to another.