I am working on iPhone application using Objective C. As I need to dismiss two UIViewControllers at once, so I am using below code :
[self.presentingViewController.presentingViewController dismissViewControllerAnimated:YES completion:nil];
This code is working fine in iOS6 and iOS7, but it is not working in iOS8. I have checked by using breakpoint, my ViewController viewDidLoad and viewWillAppear method is calling but my view is not loading at all, so as an output, I am getting blank white screen. Can anyone please help me that for iOS8, how can I solve this problem, should I need to use presentedViewController instead of presentingViewController?
Swift code
#IBAction func goBack(sender: AnyObject) {
var tmpController :UIViewController! = self.presentingViewController;
self.dismissViewControllerAnimated(false, completion: {()->Void in
println("done");
tmpController.dismissViewControllerAnimated(false, completion: nil);
});
}
Sample project
Objective-c code
- (IBAction)goBack:(id)sender {
UIViewController *trmpVC = self.presentingViewController;
[self dismissViewControllerAnimated:NO completion:^{
[trmpVC dismissViewControllerAnimated:NO completion:nil];
}];
}
Sample project
Try following:
NSArray *arrVC = [self.navigationController viewControllers];
[self.navigationController popToViewController:[arrVC objectAtIndex:arrVC.count-2] animated:YES];
Hope this helps.
Related
When I try to dismiss my UIImagePickerController, it crashes the app. the error is: "Terminating app due to uncaught exception 'UIApplicationInvalidInterfaceOrientation', reason: 'preferredInterfaceOrientationForPresentation must return a supported interface orientation!'"
I have the preferred interface orientation set in my view controller.
-(NSUInteger)supportedInterfaceOrientations
{
return UIInterfaceOrientationMaskPortrait;
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
return UIInterfaceOrientationPortrait;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return UIInterfaceOrientationIsPortrait(interfaceOrientation);
}
- (BOOL) shouldAutorotate {
return YES;
}
Here is the method I'm calling to bring up the camera, this works fine for adding the camera, but like I said, crashes when I try to remove the camera.
-(IBAction)addCamera:(id)sender
{
self.cameraController = [[UIImagePickerController alloc] init];
self.cameraController.sourceType = UIImagePickerControllerSourceTypeCamera;
self.cameraController.cameraViewTransform = CGAffineTransformScale(self.cameraController.cameraViewTransform,
1.13f,
1.13f);
self.cameraController.showsCameraControls = NO;
self.cameraController.navigationBarHidden = YES;
self.wantsFullScreenLayout = YES;
ar_overlayView = [[UIView alloc] initWithFrame:CGRectZero];
self.view = ar_overlayView;
[self.cameraController setCameraOverlayView:ar_overlayView];
[self presentViewController:cameraController animated:NO completion:nil];
[ar_overlayView setFrame:self.cameraController.view.bounds];
}
-(IBAction)back:(id)sender
{
[ar_overlayView removeFromSuperview];
[cameraController dismissViewControllerAnimated:NO completion:nil];
}
Alright, found the solution, it was really simple, I just changed my back method to:
[self dismissModalViewControllerAnimated:YES];
Now my camera goes away and I can see my original view when I press the back button.
I still haven't figured out what was causing the original problem as I've gone through the info.plist and the methods for supported orientations, but this accomplishes what I wanted.
I'm still curious as to what was causing the error though if anyone has any ideas.
You can try remove this method:
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
It will fix it.but sometimes it will lead to reduce stateBar height.
You cannot remove a UIViewController's main view from its superview.
Instead of this:
self.view = ar_overlayView;
Try this:
[self.view addSubview:ar_overlayView];
Then you will be able to remove it from the superview correctly.
You should be using the didFinishPickingMedieWithInfo method similar to below and use [self dismissModalViewControllerAnimated:YES];
-(void) imagePickerController:(UIImagePickerController *) picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
if (picker.sourceType == UIImagePickerControllerSourceTypeCamera) {
NSLog(#"Camera");
}
else {
NSLog(#"Album");
}
[self dismissModalViewControllerAnimated:YES];
}
I don't think you need to add ar_overlayView to the current view yourself if it's a camera overlay.
Here's what your code is doing now:
Add ar_overlayView to the current view
Add ar_overlayView as the camera's overlay view
Show the camera view (modal)
At this point, ar_overlayView is being displayed twice. When you send it the removeFromSuperview message on dismissing the camera view, it might be getting confused since it's in two view hierarchies at the same time.
Skipping the self.view = ar_overlayView; or [self.view addSubview:ar_overlayView]; lines should fix the problem.
Also, dismissViewControllerAnimated:completion: should be sent to the same object that presentViewController:animated:completion was called on (self in this case):
-(IBAction)addCamera:(id)sender
{
// -- snip -- //
ar_overlayView = [[UIView alloc] initWithFrame:self.cameraController.view.bounds];
[self.cameraController setCameraOverlayView:ar_overlayView];
[self presentViewController:self.cameraController animated:NO completion:nil];
}
-(IBAction)back:(id)sender
{
[self dismissViewControllerAnimated:NO completion:nil];
}
I'm working on iOS 6.
My application has a standard navigation controller with embedded a CustomViewController.
In this controller I create a modal view like this:
-(IBAction)presentModalList:(id)sender {
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil];
StationsListViewController *list = [storyboard instantiateViewControllerWithIdentifier:#"StationsListViewController"];
[list setStationsData: [self.stationsData allValues]];
[self presentModalViewController:list animated:YES];
}
The modal controller show perfectly but dismissing generates a warning.
The dismiss method in this controller is:
-(IBAction)backToMap
{
[self dismissModalViewControllerAnimated:YES];
}
The warning generated is Warning:
Attempt to dismiss from view controller < UINavigationController: 0x1ed91620 > while a presentation or dismiss is in progress!
Any clues about that?
Thanks
I realise this is a late answer but maybe this will help someone else looking for a solution to this, here is what I did:
-(IBAction)backToMap
{
if (![[self modalViewController] isBeingDismissed])
[self dismissModalViewControllerAnimated:YES];
}
For me, i found that line of code was being called multiple times, I couldn't find out why so this was the easiest fix.
Thanks JDx for getting me on the right track. I adapted it to form this solution, which will remove the warning without using functions that are deprecated in iOS 6:
-(IBAction)backToMap
{
if (![self.presentedViewController isBeingDismissed]) {
[self dismissViewControllerAnimated:YES completion:^{}];
}
}
Targeting iOS6, this is what worked for me:
if (![self.presentedViewController isBeingDismissed])
[self.presentedViewController dismissViewControllerAnimated:YES
completion:nil];
I found this approach to be unreliable - say one case in five I'd still see the error.
My solution was to use the completion block to set a flag which controls whether or not it's safe to dismiss - that way you don't need to check whether or not the view is being dismissed.
-(IBAction)presentModalView:(id)sender {
:
self.canDismiss = NO;
[self presentViewController:aVC animated:YES completion:^{
self.canDismiss = YES;
}];
:
}
In the bit of code where the dismiss occurs, just check the flag:
-(void)dismisser {
:
if (self.canDismiss) {
[self dismissViewControllerAnimated:YES completion:nil];
}
:
}
Hey presto, no more errors!
You can do whatever you want after the completion of the dismiss method as:
-(IBAction)backToMap
{
[self dismissViewControllerAnimated:YES
completion:^{
//Do something here
}];
}
i cant seem to figure out how to change the views using animation in the new ios 5. i have this code which just switches the views but without any type of animation. This is the code i have so far:
-(IBAction)back:(id)sender{
if ([self respondsToSelector:#selector(dismissViewControllerAnimated:completion:)])
{
NSLog(#"didTouchDoneButton 5.x");
[self dismissViewControllerAnimated:NO completion:nil];
}
else
{
NSLog(#"didTouchDoneButton 4.x");
[self dismissModalViewControllerAnimated:NO];
}
}
When you use presentModalViewController:animated you can change the animation with the method [myModalViewController setModalTransitionStyle: UIModalTransitionStylePartialCurl.
I want to add Game center for my project but now I get some stuck and can't find any solution for my problem by Google :(
When I call method showleaderboard in my project, leaderboard appear and success to load my score in gamecenter but it don't receive touch (this screen look like freeze).
This is my code:
-(void) ShowLeaderBoardCategory:(NSString *)my_category
{
GKLeaderboardViewController * leaderboardController = [[GKLeaderboardViewController alloc] init];
if(leaderboardController != nil)
{
leaderboardController.category = my_category;
leaderboardController.leaderboardDelegate = mySubView;
[mySubView presentModalViewController: leaderboardController animated: YES];
[glView addSubview:mySubView.view];
}
[leaderboardController release];
}
-(void) leaderboardViewControllerDidFinish:(GKLeaderboardViewController *)viewController
{
[mySubView dismissModalViewControllerAnimated:YES];
[mySubView release];
[viewController.view removeFromSuperview];
[viewController release];
}
mySubView is interface I define:
#interface MyUIView : UIViewController<GKLeaderboardViewControllerDelegate>
......
and used it:
MyUIView *mySubView;
Please, tell me what wrong in my code? :((
What reason can there be to stop receiving cocos2d events?
Thanks for reading and hope your hint.
[viewController.view.superview removeFromSuperview];
worked for me.
The problem is in your removal method: where viewController refers to the leaderboard:
[mySubView dismissModalViewControllerAnimated:YES]; //this removes the modally presnted leaderboard.
[mySubView removeFromSuperview]; //this should show up the glView
I've been searching around but unfortunately have had no luck.
My app requires the user to sign in/sign up the first time he or she launches the app. I know how to determine first launch (using NSUserDefaults) but whenever I try to present the modal containing the sign in/ sign up controls, nothing happens.
Here's what I have:
-(void)viewDidLoad {
[self showLogin];
[super viewDidLoad];
}
-(void)showLogin {
FlipsideViewController *controller = [[FlipsideViewController alloc] initWithNibName:#"AccountView" bundle:nil];
controller.delegate = self;
controller.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
[self presentModalViewController:controller animated:YES];
[controller release];
}
However, nothing happens. The main view just loads as normal. Any help is greatly appreciated.
-Giles
[UPDATE]
Fixed simply by using..
-(void)viewDidAppear:(BOOL)animated
{
}
instead of
-(void)viewDidLoad
{
}
Thanks anyway!
/idiocy
I had the same issue and ended up using viewDidAppear as well. The only problem with the viewDidAppear approach is that if you load other UIViewControllers on top, then reshow the base, then your setup code gets called over and over. I ended up having to add a boolean value (initialised to YES) to this view controller and check that value before deciding what to do. Hope this helps someone...
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:(BOOL)animated];
if(justLaunched)
{
justLaunched = NO;
if(settingsFileExists)
{
[self displayMainView];
}
else
{
[self displaySetupView];
}
}
}
How about using performSelector:withObject:afterDelay in the viewDidLoad function? That's how I do it, with a short delay of 0.1s.
And invoking this in the viewDidLoad isn't very safe : the sequence viewDidLoad / viewDidUnload can occur at runtime when the iPhone needs to release some views in order to get back some free memory.
The side effect of such sequence would be that your login controller would be shown...
As you said the viewDidAppear looks better but not simply put it at the end of the appDidFinishedLaunching the delegate of your UIApplication?