How to present modal ViewController on top of UINavigationController without using initWithRootViewController, just with adding it to the existing navigationcontroller stack?
my code is:
TableViewController *controller = [self.storyboard instantiateViewControllerWithIdentifier:#"TableView"];
UINavigationController *navi = [[UINavigationController alloc] initWithRootViewController:controller];
[self presentViewController:navi animated:NO completion:nil];
edit: what i actually want is to do like: "vc1 push vc2 modal vc3" and than use "poptoroot...to vc1". But the initWithRootViewController (vc3) is ruining it.
If you want to change the stack of navigationController. Use :
- (void)setViewControllers:(NSArray *)viewControllers animated:(BOOL)animated NS_AVAILABLE_IOS(3_0); // If animated is YES, then simulate a push or pop depending on whether the new top view controller was previously in the stack.
It will help.
Related
Maybe a silly question. But I've added a navigation item in code in my view controller:
//Set add transactions button
UIBarButtonItem *addButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:#selector(addButtonAction:)];
[self.navigationItem setRightBarButtonItem:addButton];
-(void)addButtonAction
{
}
And I want to segue from this navigation item directly to a new view controller. However I cannot create any segue from the previous view controller to the next one. And since my navigation item is created in code I cannot "pull" a segue from there to a new VC. How can I do that?
Do this
-(void)addButtonAction
{
MyNewViewController *myNewVC = [[MyNewViewController alloc] init];
// do any setup you need for myNewVC
//If you want to present modal
[self presentModalViewController:myNewVC animated:YES];
//If you want to push
[self.navigationController pushViewController:myNewVC animated:YES];
}
Add button to dismiss if presented using modal. In case of push it will have back button
I have several .xib files (page1, page2 ...) and want to switch between them using buttons (as a navigation bar)
I am using
page1 *second = [[page1 alloc] initWithNibName:nil bundle:nil];
second.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:second animated: YES];
page2 *second = [[page2 alloc] initWithNibName:nil bundle:nil];
second.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:second animated: YES];
and so on...
I learned that this consumes a lot of memory because I am presenting a view over and over again and after switching back and forth the app sometimes crashes.
So, question is what can I do?
I tried this:
[self dismissModalViewControllerAnimated:YES]
but after dismiss it returns to the previous page and I can not navigate to another one.
Probably I used a stupid approach, however, I've done a few apps that way and don't want to change the controller completely.
Thank you for your help!
I think you have to create IBActions from that 2 blocks of code an link that IBActions to the right button.
Apologies if this is a basic question but I am new to Xcode and have a storyboard app and in the storyboard (with no segue) I have a view controller with an embedded map view.
On the storyboard screen I have an image with a tap gesture linked, I have tested the tap and it works (NSLog) but I want to know how to launch my mapview view controller and also zoom to an x&y.
My code currently has
-(IBAction)handleMapTap:(UIGestureRecognizer *)sender {
NSLog(#"Tapped");
}
& I have tried;
MMMapViewController *mapViewController = [[MMMapViewController alloc] initWithNibName:#"MapView" bundle:nil];
[self.navigationController pushViewController:mapViewController animated:YES];
My view controller has a class set as MMMapViewController I have given the view controller a storyboard id of MapView (if it's required?).
I've read a lot of stackoverflow articles but can't seem to find an answer. If anyone can help I would be really grateful.
-(IBAction)handleMapTap:(UIGestureRecognizer *)sender
{
MMMapViewController *mapViewController = [[MMMapViewController alloc] initWithNibName:#"MapView" bundle:nil];
//[self.navigationController pushViewController:mapViewController animated:YES];
[self presentModalViewController:mapViewController animated:YES];
[mapViewController release];
}
It would probably help to know what self is, if it is indeed a UIViewController, then
I would make sure that self.navigationController is not nil.
You actually have the right code, as far as I can tell, but depending on your scenario, you could get away with presenting the mapView as a modal view controller.
i am making a customized back button which works exactly as a real back button does. below is my code
UIButton *cusBack = [UIButton buttonWithType:101];
[cusBack setTitle:#"Back" forState:UIControlStateNormal];
[cusBack addTarget:self action:#selector(clickBack) forControlEvents:UIControlEventTouchUpInside];
self.view addSubView:cusBack;
and here is my selector:
-(void)clickBack{
PrevPage *pPage = [[PrevPage alloc] init];
[self.navigationController pushViewController:pPage animated:YES];
[pPage release];
}
actually, it works but the direction it creates is from RIGHT to LEFT. but I want the page to move from LEFT to RIGHT since it goes back to the recent page
thank you!
If you want to have the same behavior as the back button you should try another approach:
-(void)clickBack{ //Your presenting view controller will always be the last view controller on the stack.
[self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:self.navigationController.viewControllers.count-1] animated:YES];
}
Also, if you need to do some changes to the previous view controller, all you need to do is import it's header file and then you can use it's properties and public methods before popping the view controller.
#import "MyPreviousViewController.h"
...
-(void)clickBack{
[self.navigationController.viewControllers objectAtIndex:self.navigationController.viewControllers.count-1].title = #"Change title for previous view controller";
[self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:self.navigationController.viewControllers.count-1] animated:YES];
}
Currently, your back button doesn't work as the real back button does, because, instead of popping the last view controller off the stack(also releasing the objects), you actually keep pushing new view controllers on the stack. You might have some issues if this stack gets too big.
I was wondering if there was a way to have the user create/delete cells in a Table View but when they click on it, every cell that they create loads the same view. I have the first part created but I cannot seem to get it to load a view.
Simple create a new view and push on didSelectRowAtIndexPath Delegate method of UITableView.
For ex.
- (void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath*)indexPath{
DetailViewController *vController = [[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:nil];
[self.navigationController pushViewController:vController animated:YES];
[vController release];
}