In my app I am using presentModalViewController and in the next controller I have used UIScrollView, also to dismiss presentModalViewController UITapGestureRecognizer is used
My code is like,
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tappedOnView:)];
tapGesture.numberOfTapsRequired = 1;
tapGesture.numberOfTouchesRequired = 1;
tapGesture.delegate = self;
[self.fullScreenImageView addGestureRecognizer:tapGesture];
-(void)tappedOnView:(UIGestureRecognizer*)gestureRecognizer {
[self dismissModalViewControllerAnimated:YES];}
But it gives me an error
attempt to dismiss modal view controller whose view does not currently appear. self = <UITabBarController: 0xabb0610> modalViewController = <FullScreenViewController: 0xab5c440>
So I replace the calling way like
if ([self respondsToSelector:#selector(presentingViewController)]) {
[self.presentingViewController.presentingViewController dismissModalViewControllerAnimated:YES]; // for IOS 5+
} else {
[self.parentViewController.parentViewController dismissModalViewControllerAnimated:YES]; // for pre IOS 5
}
But the code doesn't work. I can't dismiss my presentModalViewController.
Without scroll view its working. What is wrong in above code?
tapGesture.delegate = self;
is not needed over there.
[self.fullScreenImageView addGestureRecognizer:tapGesture];
if fullScreenImageView is a scrollView then tapGesture already implemented over there. That might be the problem.
Related
I have a question, I want to build popup view like the UIAlertView,
I create two UIViewController in the storyboard(note: there are not segue),and Root UIViewController will load the UIViewController view popup.
I create two UIViewController to edit the UIView, because I want to use the storybaord to edit my complex UIView in the feature.
Then I put the container view on the RootViewController and there are two button in the container view.(my structure as below:)
When I click the pop up green button(with button name popupGreenBtn), It can correct addSubview on the UIWindow.
- (void)viewDidLoad {
[super viewDidLoad];
NSLog(#"ContainerViewController view didload");
appDelegate = (AppDelegate*)[[UIApplication sharedApplication]delegate];
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:#"Main" bundle: nil];
secondGreenVC = (SecondGreenViewController*)[mainStoryboard instantiateViewControllerWithIdentifier:#"SecondGreenViewController"];
thirdRedVC = (ThirdRedViewController*)[mainStoryboard instantiateViewControllerWithIdentifier:#"ThirdRedViewController"];
}
- (IBAction)popupGreenBtnAction:(id)sender {
[appDelegate.window addSubview: secondGreenVC.view];
[appDelegate.window bringSubviewToFront:secondGreenVC.view];
}
- (IBAction)popupRedBtnAction:(id)sender {
[appDelegate.window addSubview: thirdRedVC.view];
[appDelegate.window bringSubviewToFront:thirdRedVC.view];
}
When I click the button , it can correct popup on the window:
But now , When I click the SecondGreenViewController and ThirdRedViewcontroller background view(just transparent dark black), I want to close the popon the view(secondGreenVC.view or thirdRedVC.view).
I had try to add the code in the SecondGreenViewController class below:
#implementation SecondGreenViewController
- (void)viewDidLoad {
[super viewDidLoad];
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tapAction:)];
[_secondBaseView addGestureRecognizer:tap];
}
-(void) tapAction:(UITapGestureRecognizer*) recognizer
{
[self removeFromParentViewController];
// [self dismissViewControllerAnimated:NO completion:nil];
NSLog(#"tap in SecondGreenViewController");
}
#end
There are not effect to close the UIViewController.
How can I close the Popup window(the UIViewController) when I click the dark black part?
(If you want to more info, please tell me or you can see my this simple project from github https://github.com/dickfalaDeveloper/PopUpViewDemo )
Thank you very much.
-(void) tapAction:(UITapGestureRecognizer*) recognizer
{
thirdViewcontroller.hidden=YES;
}
I resolve the problem. But I don't know have any best answer.
My method is in the popupGreenBtnAction actin.
change the code to:
appDelegate.window.rootViewController.modalPresentationStyle = UIModalPresentationCurrentContext;
secondGreenVC.modalPresentationStyle = UIModalPresentationCustom;
[appDelegate.window.rootViewController presentViewController:secondGreenVC animated:NO completion:nil];
Then in the SecondGreenViewController storyboard,
Drag an other UIView do base UIView and set the UIView IBOutlet(now I name with"secondBaseView").
at SecondGreenViewController.m
- (void)viewDidLoad {
[super viewDidLoad];
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tapAction:)];
[self.secondBaseView addGestureRecognizer:tap];
}
-(void) tapAction:(UITapGestureRecognizer*) recognizer
{
[self dismissViewControllerAnimated:NO completion:nil];
}
That is Ok to show the modal and dismiss the modal UIViewController.
I have a trio of functions and a property that I use to control my popovers as follows:
-(void)dismissPopoverIfPresentAnimated:(BOOL)animated
{
if (self.currentPopover)
{
[self.currentPopover dismissPopoverAnimated:animated];
self.currentPopover = nil;
}
}
-(void)presentViewController:(UIViewController *)viewController inView:(UIView *)view fromRect:(CGRect)rect suppressArrow:(BOOL)suppressArrow
{
//Did the user just tap on a button to bring up the same controller that's already displayed?
//If so, just dismiss the current controller.
BOOL closeOnly = NO;
if (self.currentPopover)
{
UIViewController *currentController = [self.currentPopover.contentViewController isKindOfClass:UINavigationController.class] ? ((UINavigationController *)self.currentPopover.contentViewController).topViewController : self.currentPopover.contentViewController;
UIViewController *newController = [viewController isKindOfClass:UINavigationController.class] ? ((UINavigationController *)viewController).topViewController : viewController;
if ([currentController isKindOfClass:newController.class])
closeOnly = YES;
[self dismissPopoverIfPresentAnimated:NO];
}
if (!closeOnly)
{
self.currentPopover = [[UIPopoverController alloc] initWithContentViewController:viewController];
self.currentPopover.backgroundColor = [UIColor whiteColor];
[self.currentPopover presentPopoverFromRect:rect inView:view permittedArrowDirections:(suppressArrow ? 0 : UIPopoverArrowDirectionAny) animated:YES];
}
}
(instancetype) initWithContentViewController:(UIViewController )viewController
{
self = [super initWithContentViewController:[[UIViewController alloc] init]];
if (self)
{
UIViewController contentViewController = super.contentViewController;
[contentViewController addChildViewController:viewController];
[viewController didMoveToParentViewController:contentViewController];
[contentViewController.view addSubview:viewController.view];
[self setPopoverContentSize:viewController.preferredContentSize animated:NO];
}
return self;
}
This runs fine in iOS 7, but in iOS 8 the problem is there is a delay between the call to presentPopoverFromRect and when the item actually shows up onscreen. So, if a user double taps a button to show a popover, the first tap will properly dismiss, then "start" the showing of the new controller. The second tap will make the dismiss call (the popover is not yet visible) and then not show the new controller (this is a design feature so that click a button will show a popover, clicking it again will hide it).
The problem is that the call to dismiss the popover doesn't actually work and the popover will show up. At that point I can't get rid of it because my property is nil and I think it is not showing.
My guess is this is an iOS 8 bug where the dismiss somehow doesn't see a visible popover and thus doesn't do anything, where instead, it should prevent it from showing up.
Oh, one last note is that the call to presentViewController is always done on the main thread.
In my app, I do a search asynchronously. When that completes my mapViewController with pins for the locations is displayed. 2 seconds after that, I do a modal transition over to a listViewController. I set the backgroundcolor like this:
self.view.backgroundColor = [UIColor colorWithWhite:1.0 alpha:0.65];
Making it possible to see the map behind it.
The problem is this: Less then a second after the listView appears you can see the map in the background for a second before it goes away. What I can see in the background now, is the mainViewController the app starts with.
it looks like this:
Less than a second later:
Any help/explanation would be greatly appreciated.
Your view is still transparent, but once your modal controller is at the top of the stack, the view behind it is hidden.
Try using :
yourController.modalPresentationStyle = UIModalPresentationCurrentContext;
[yourController present...];
This code seems to work. I hope it will help.
-(void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
MKMapView *mapView = [MKMapView new];
[self.view addSubview:mapView];
mapView.frame = self.view.bounds;
UIGestureRecognizer *gestureRecognizer = [UITapGestureRecognizer new];
[gestureRecognizer addTarget:self action:#selector(displayTransparentVC)];
[self.view addGestureRecognizer:gestureRecognizer];
}
-(void)displayTransparentVC
{
UIViewController *vc = [TransparentViewController new];
self.modalPresentationStyle = UIModalPresentationCurrentContext;
[self presentViewController:vc animated:YES completion:^{
}];
}
I spent entire weekend trying to figure out why my gestures are not working. When I present as a model view gestures are working but when I add as a subview gestures are not working. Is there any reason why its not working only when added as subview.
This code Works:
myVC = [[FullViewController alloc] initWithNibName:#"FullViewController" bundle:nil];
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController: myVC];
navigationController.modalPresentationStyle = UIModalPresentationFormSheet;
[self presentModalViewController:navigationController animated:YES];
navigationController.view.superview.bounds = CGRectMake(0,0,1024,724);
This code does not work:
myVC = [[FullViewController alloc] initWithNibName:#"FullViewController" bundle:nil];
myVC.view.frame = CGRectMake(0, 0, 1024, 724);
myNavCtrl = [[UINavigationController alloc] initWithRootViewController:myVC];
[self.view addSubview: myNavCtrl.view];
myNavCtrl.view.frame = CGRectMake(0, -20, 1024, 675);
Gesturerecognizer code:
swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(handleSwipeLeft:)];
[swipeLeft setDirection:UISwipeGestureRecognizerDirectionLeft];
[self.view addGestureRecognizer:swipeLeft];
Any help would be apprenticed.
Looks to me like the superview is not allowing touches or user interaction. Can't say exactly why with the code snippet you provide, but you can try adding a gesture recognizer to the superview and see if that works, if it doesn't then the problem is with the superview.
It works as modal because it does not use the other view at all.
Without seeing handleSwipeLeft details:
It looks like you are setting a UIGestureRecognizer and telling it call the selector/ method : handleSwipeLeft.
You should declare your UIGestureRecognizer in your View Controller but set the target as your UIView subclass and then implement handleSwipeLeft in your UIView subclass.
Hope that works
I have a requirement in which I need to swipe on a label and after swiping on it,it should take me to the other view.
Will it be possible. The Label should be self explanatory as it should change the color and should get a blinking effect so that the user knows to swipe there.
Please suggest me.
Thanks
Rizwan
The best thing to do is to create a gesture and attach that gesture to the uilabel, heres a simple example
UISwipeGestureRecognizer *swipe;
swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(Gest_SwipedLeft:)];
[swipe setDirection:UISwipeGestureRecognizerDirectionLeft];
[label addGestureRecognizer:swipe];
[swipe release];
Then simply apply your code to push the next nib
-(void)Gest_SwipedLeft:(UISwipeGestureRecognizer *) sender
UI_iPad_View *controller = [[UI_iPad_View alloc] initWithNibName:#"ipadview" bundle:nil];
[[self navigationController] pushViewController:controller animated:YES];
// Cleanup
[controller release], controller = nil;
}