I have an ipad app.
I am trying to open view 2 (kind of push view) full with entire screen. how normally do with push view or UIModalPresentationFullScreen. but my base view which is view 1 is also modal view.
so i was trying to open view 2 when view 1 get dismiss…
- (void) handleNewButton :(int)id
{
[self dismissViewControllerAnimated:YES
completion:^{
NewViewController *View2 = [NewViewController alloc] init];
View2.modalPresentationStyle = UIModalPresentationFullScreen;
View2.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[self presentViewController: View2 animated:YES completion:nil];
}];
}
but my view 2 is not opening. i know i can not do push view. But is there any way to achieve it?.
When you do this dismissViewControllerAnimated the UIViewController (self in this case) is gone, in the sense that he is not on the screen anymore, if it has been released or not, that's another story. The reason for you to not be able to show the View2 (very poor name, it should at least ViewController2) is because you are trying to show it from a UIViewController that is not on the screen anymore.
So, what can you do?
The current self in the context of the handleNewButton method, in theory was presented by another UIViewController, that's from where you want to present your View2.
Probably the quickest way of implementing of what I said, would probably be with a notification described here. Although I would do it with a block, so when the self would be created, I would pass a dismissiCompletionBlock that would be called when that UIViewController was dismissed.
try to allocate NewViewController with nib name if you are not using storyboard,
[self dismissViewControllerAnimated:YES
completion:^{
NewViewController *n=[[NewViewController alloc]initWithNibName:#"NewViewController" bundle:nil];
View2.modalPresentationStyle = UIModalPresentationFullScreen;
View2.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
[self presentViewController: View2 animated:YES completion:nil];
}];
or if you are using storyboard get NewViewController using identifier.
Related
I have the whole app embedded in UINavigationController. Now there is the Home Screen that has several modules for user to choose. Now, when the user clicks on the module it is NAVIGATED and if user desires to choose some another module from any other modules available, there is a button in navigation bar, which PRESENTS the HomeViewController modally on top of the current module and then user can choose any module from there which will NOT BE PRESENTED instead they will NAVIGATE.
Now what I have done is made a delegate called navigate on HomeViewController and will be override by viewcontrollers of each module and it will take the reference of the new ViewController with it. Then when this method is called I have first dismissViewController the HomeViewController and then navigated to the new ViewController that I have the reference.
Now, what the real issue is that SOMETIMES there is a jerk when navigating from one module to other and sometime it works fine. That why I am not able to debug also. The jerk is that when a module is clicked from HomeViewController, the home screen disappears and the appears again and then it actually navigates.
The code for navigating to a module from HomeViewController is
RadiusSearchViewController *rad = [self.storyboard instantiateViewControllerWithIdentifier:#"RadiusSearchViewController"];
[self.delegate navigate:rad];
This navigation overrided method in all modules is
-(void)navigate:(UIViewController*)uiViewController{
NSLog(#"inside navigate method");
[self.presentedViewController dismissViewControllerAnimated:YES completion:nil];
[self.navigationController pushViewController:uiViewController animated:YES];
}
I assure you that it is coming in this method.
Now the code that presents the HomeViewController modally is
ViewController *vc = [self.storyboard instantiateViewControllerWithIdentifier:#"HomeVC"];
vc.view.backgroundColor = [[UIColor whiteColor]colorWithAlphaComponent:0];
vc.delegate = self;
vc.providesPresentationContextTransitionStyle = YES;
vc.definesPresentationContext = YES;
vc.modalPresentationStyle = UIModalPresentationOverCurrentContext;
vc.fromOutside = true;
NSLog(#"Presneting...");
[self presentViewController:vc animated:NO completion:nil];
The reason for PRESENTING and NOT NAVIGATING the HomeViewController is that it comes on the top of the current module in transparent form which is necessary.
REMEMBER: It happens sometimes not all of the time. Like you can say half of the times.
[self.presentedViewController dismissViewControllerAnimated:YES completion:nil];
[self.navigationController pushViewController:uiViewController animated:YES];
this should be changed to...
[self.presentedViewController dismissViewControllerAnimated:YES
completion:^{
[self.navigationController pushViewController:uiViewController animated:YES];
}];
this will make sure navigation view controller will be called after dismiss is done. check and see if it solves your problem.
I am loading a ViewController from a Storyboard like this:
SSContentViewController* contentViewController =
[[UIStoryboard storyboardWithName:#"Main_iPhone" bundle:nil]
instantiateViewControllerWithIdentifier:#"settingsViewController"];
and add it to my ViewController Array:
[self.viewControllers addObject:contentViewController];
inside the SettingsViewController I have a segue with presents a modal view controller. If I perform this segue I get a "Presenting view controllers on detached view controllers is discouraged"-Warning in the console output.
But there is nothing wrong with it. Everything is working as expected. Is it safe to ignore this warning?
EDIT:
The problem is that the ViewController on which I perform the segue is added to my RootViewController with:
[rootVC.view addSubview:viewController.view];
So I know that it is detached. But even with that warning things are working as they should and do not produce visual errors, etc...
you should actually use presentViewcontroller and dismissviewcontroller to avoid this.
Instead of adding use:
[self.view.window.rootViewController presentViewController:contentViewController animated:YES completion:nil];
And from model view use below to dismiss:
[self dismissViewControllerAnimated:YES completion:nil];
Edit 01:
for frame rate drop try below:
[picker dismissViewControllerAnimated: YES completion:^{
[self performSelector:#selector(reinit) withObject:nil afterDelay:2];
}];
I have a screen tutorial for my app. I have a UIPageViewController setup to manage 3 View Controllers. Once you get to the last view on the tutorial you press a "done" button and the tutorial is supposed to go away.
I can't seem to find a way to pop/dismiss the tutorial. I have tried the following:
[self dismissViewControllerAnimated:YES completion:nil];
[self.navigationController popViewControllerAnimated:YES];
[self.presentingViewController dismissViewControllerAnimated:YES completion:nil];
Any ideas would be appreciated.
The View Controllers being managed are subviews of UIViewController if that's of any help.
EDIT
This is how I set up the views:
In my UIPageViewController I have the following:
-(void)viewDidLoad{
[self.pageController setViewControllers:#[tutorialPages[0]]
direction:UIPageViewControllerNavigationDirectionForward
animated:NO
completion:nil];
[self addChildViewController:self.pageController];
[[self view] addSubview:[self.pageController view]];
[self.pageController didMoveToParentViewController:self];
}
- (void)setupContentViews{
ScreenTutorial_1ViewController *screenTutorial1 = [[ScreenTutorial_1ViewController alloc] initWithNibName:#"ScreenTutorial_1ViewController" bundle:nil];
ScreenTutorial_2ViewController *screenTutorial2 = [[ScreenTutorial_2ViewController alloc] initWithNibName:#"ScreenTutorial_2ViewController" bundle:nil];
ScreenTutorial_3ViewController *screenTutorial3 = [[ScreenTutorial_3ViewController alloc] initWithNibName:#"ScreenTutorial_3ViewController" bundle:nil];
tutorialPages = #[screenTutorial1, screenTutorial2, screenTutorial3];
NSLog(#"tutorPages = %#", tutorialPages);
}
First, I strongly recommend you using:
[[NSUserDefaults standardUserDefaults] setObject:#YES forKey:#"hasSeenTutorial"];
Secondly, how are you presenting your PageViewController? In order to dismiss it like you have, you need to use (from a UIViewController):
[self presentViewController:tutorial animated:YES completion:nil];
Where tutorial is your Tutorial View controller. This will slide it up across the screen (or you can not animate it), and then you can dismiss it like you have.
Wild shot in the dark here, but I think you could reach your UIPageVieWController by calling self.parentViewController in your child controllers.
You could then either dismiss it (if it's modally presented) or pop it.
I just realized that I had 2 views in a xib file and the IBAction was connected to the wrong one. I've been copying and pasting buttons, labels...etc. On one of those pastes, I must have copied the pasted the entire view. I deleted it and used the following command which did dismiss the View:
[self dismissViewControllerAnimated:YES completion:nil];
I'm developing a single view iOS 5.0+ app and I'm going to navigate throw my ViewControllers this way:
SearchViewController* search =
[[SearchViewController alloc] initWithNibName:#"SearchViewController"
bundle:nil];
[self presentViewController:search
animated:NO
completion:nil];
My question is, if I'm opening SearchViewController from HomeViewController, is HomeViewController dismissed after SearchViewController is shown?
I have a lot of UIViewControllers and I don't know if all of them will be on memory while user is navigating between them.
If You want to Present Only one Viewcontroller you can try like,
SearchViewController* search =
[[SearchViewController alloc] initWithNibName:#"SearchViewController"
bundle:nil];
[self dismissViewControllerAnimated:NO completion:^{
[self presentViewController:search
animated:NO
completion:nil];
}];
When you present a ViewController from another ViewController, they never get released from memory. To release them from memory you need to explicitly dismiss them.
The method presentViewController:animated:completion: sets the
presentedViewController property to the specified view controller,
resizes that view controller’s view and then adds the view to the view
hierarchy.
So you see you are getting a stack of ViewControllers and adding a View on top of another.
I have UIPageViewController which contains a couple of UIViews, in each of the view its possible to turn the UIView with an horizontal flip to a NavigationController containing only a view. I implemented this functionality but it seems that the flip only works the first time.
Here is how I flip the view in the first place:
UINavigationController *navController = [self.storyboard instantiateViewControllerWithIdentifier:#"BackViewController"];
//Pass some data to the back controller
[[[navController viewControllers] objectAtIndex:0] setDataObject:self.dataObject];
navController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self.navigationController presentViewController:navController animated:YES completion:nil];
And here is how I turn it back:
PageRootController *pageRootController = [[self.storyboard instantiateViewControllerWithIdentifier:#"PageRootController"] initWithData:self.mydata];
pageRootController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self.navigationController presentViewController:pageRootController animated:YES completion:nil];
Like I said, this works good for the first time (I can flip it and then flip back), and does nothing once I tap it again. I'm new to iOS programming so if you need some more info I can paste it.
The problem was that I had a new navigation controller inside each of my views, instead of pushing and popping views from the current one.