This is my viewController.m file
- (IBAction)defaultAction:(id)sender {
SimpleViewController *simpleView = [[SimpleViewController alloc]init];
[self presentViewController:simpleView animated:YES completion:nil];
}
- (IBAction)flipAction:(id)sender {
SimpleViewController *simpleView = [[SimpleViewController alloc]init];
[simpleView setModalTransitionStyle:UIModalTransitionStyleFlipHorizontal];
[self presentViewController:simpleView animated:YES completion:nil];
}
- (IBAction)dissolveAction:(id)sender {
SimpleViewController *simpleView = [[SimpleViewController alloc]init];
[simpleView setModalTransitionStyle:UIModalTransitionStyleCrossDissolve];
[self presentViewController:simpleView animated:YES completion:nil];
}
- (IBAction)pageCurlAction:(id)sender {
self.callFromPageCurl = true;
SimpleViewController *simpleView = [[SimpleViewController alloc]init];
simpleView.delegate = self;
[simpleView setModalPresentationStyle:UIModalPresentationFullScreen];
[simpleView setModalTransitionStyle:UIModalTransitionStylePartialCurl];
[self presentViewController:simpleView animated:YES completion:nil];
}
- (IBAction)showWithDelegate:(id)sender {
self.callFromShowWithDelegate = true;
SimpleViewController *simpleView = [[SimpleViewController alloc]init];
simpleView.delegate = self;
[self presentViewController:simpleView animated:YES completion:nil];
}
- (void)didReceiveMessage:(NSString *)message{
self.myMessage.text = message;
}
- (void)viewWillAppear:(BOOL)animated{
self.callFromShowWithDelegate = false;
self.callFromPageCurl = false;
NSLog(#"Called first");
}
and this is my simpleViewController.m file
- (IBAction)dismissMeAction:(id)sender {
if(self.delegate.callFromShowWithDelegate)
[self.delegate didReceiveMessage:#"Hello World"];
else
[self.delegate didReceiveMessage:#"My Message"];
if(self.delegate.callFromPageCurl == true)
[self dismissViewControllerAnimated:NO completion:nil];
else
[self dismissViewControllerAnimated:YES completion:nil];
}
When i use pageCurl to go to the next view and i came back to the main view it is calling viewWillAppear method again But if i go to the next view using any other button and came back to the main view it is not calling viewWillAppear method.. But why? SHouldn't it have called viewWillAppear method every time i came back to main view.
If you have used modal presentation for view controller prior to iOS 13, the default behavior is presenting the modal view controller in full screen, and when the modal view controller is dismissed, the viewDidAppear function will be called on the presenting view controller (ie. the view controller that is responsible for presenting the modal view controller).
However in iOS 13, the default behavior of presenting the modal view controller is replaced with a card-like animation (the official term for it is page sheet)
In iOS 13+, You need to set the correct presentationStyle. If you want that your presentedController will be fullScreen and call previous viewWillAppear, then you can use "UIModalPresentationFullScreen"
- (IBAction)defaultAction:(id)sender {
SimpleViewController *simpleView = [[SimpleViewController alloc]init];
[simpleView setModalPresentationStyle:UIModalPresentationFullScreen];
[self presentViewController:simpleView animated:YES completion:nil];
}
You can change this in your nib/storyboard as well:
Related
Open the default contact form to add a number
Add a number and click on cancel to remove and open new modal for confirmation
Select discard changes modal close
Now when I open the contact book then first open the modal with the last number I added in the contact book form which added from my app
here is my code:
[self updateRecord:contact withData:contactData];
CNContactViewController *controller = [CNContactViewController viewControllerForNewContact:contact];
controller.delegate = self;
dispatch_async(dispatch_get_main_queue(), ^{
UINavigationController* navigation = [[UINavigationController alloc] initWithRootViewController:controller];
UIViewController *viewController = (UIViewController*)[[[[UIApplication sharedApplication] delegate] window] rootViewController];
while (viewController.presentedViewController)
{
viewController = viewController.presentedViewController;
}
[viewController presentViewController:navigation animated:YES completion:nil];
self->updateContactPromise = resolve;
Below is delegate method code:
[viewController dismissViewControllerAnimated:YES completion:nil];
if(updateContactPromise) {
if (contact) {
NSDictionary *contactDict = [self contactToDictionary:contact withThumbnails:true];
updateContactPromise(contactDict);
} else {
updateContactPromise(nil);
}
updateContactPromise = nil;
}
}
When a user presses the center UITabBarItem I present a modal UIView. Think of it like Instagram.
-(BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController{
if(viewController == [self.viewControllers objectAtIndex:2])
{
CameraViewController *cameraVC = [[UIStoryboard storyboardWithName:#"Main" bundle:nil] instantiateViewControllerWithIdentifier:#"cameraVC"];
UINavigationController* navController = [[UINavigationController alloc] initWithRootViewController:cameraVC];
navController.navigationBar.barStyle = UIStatusBarStyleLightContent;
[self presentViewController:navController animated:YES completion:nil];
return NO;
}
else
{
return YES;
}
}
This works perfectly.
When I'm done taking a picture in CameraViewController I want the view to be dismissed and the 4th UITabBarItem to be selected for the results of the picture (HistoryViewController).
This is how I do that in CameraViewController (who is modally pushed):
[self dismissViewControllerAnimated:YES completion:nil];
[(UITabBarController *)self.presentingViewController setSelectedIndex:3];
And this is where it gets buggy.
As you can see the text in the 4th tab is selected, but the first tab icon is still selected. Also the presented view is the one from the first tab.
After 10 seconds or so it eventually changes the view to the, correct, 4th tab.
I'm trying to find out what process creates this slowdown so I've set up a lot of NSLog's.
The approximate 10 second slowdown is between [(UITabBarController *)self.presentingViewController setSelectedIndex:3]; in the CameraViewController and viewDidLoad in HistoryViewController.
What is happening in between these calls/methods that could cause the slowdown?
Edit:
In CameraViewController:
- (void)scan {
dispatch_queue_t scanTesseract = dispatch_queue_create("scanTesseract", NULL);
dispatch_async(scanTesseract, ^(void) {
dispatch_async(dispatch_get_main_queue(), ^{
[SVProgressHUD setForegroundColor:[UIColor ht_mintDarkColor]];
[SVProgressHUD showProgress:0 status:#"Scanning"];
});
//background processing goes here
[self.tesseract setImage:self.imgToScan.blackAndWhite];
[self.tesseract recognize];
[self filterResults:[self.tesseract recognizedText]];
dispatch_async(dispatch_get_main_queue(), ^{
[SVProgressHUD dismiss];
});
[self scanningDone];
});
}
- (void)scanningDone {
[LastScan getInstance].hasBeenViewed = FALSE;
[self dismissViewControllerAnimated:YES completion:nil];
[(UITabBarController *)self.presentingViewController setSelectedIndex:3];
}
In HistoryViewController:
- (void)viewDidLoad {
[super viewDidLoad];
NSLog(#"ViewDidLoad");
self.navigationController.navigationBar.barStyle = UIStatusBarStyleLightContent;
self.collectionView.backgroundColor = [UIColor whiteColor];
}
You are calling your scanningDone from within a background queue. Execute that method on the main Queue.
dispatch_async(dispatch_get_main_queue(), ^{
[self scanningDone];
});
What about this?
[self dismissViewControllerAnimated:YES completion:^{
[(UITabBarController *)self.presentingViewController setSelectedIndex:3];
}];
I am making an app with different view controllers. My home screen is in main.storyboard. Rest of the view controllers have their own xib, .h & .m files. I am trying this for navigation from home screen.
-(IBAction)btnSignUpTapped:(id)sender
{
SignUpWithEmailViewController * login = [[SignUpWithEmailViewController alloc] init];
UINavigationController *nav = [[UINavigationController alloc]
initWithRootViewController:login];
[self presentViewController:nav animated:YES completion:NULL];
}
This code works fine for navigating to different viewcontroller (in this case SignUpwithEmailViewController). On SignUpWithEmailViewController I have a back button which is supposed to bring me back to home screen. This is what I got so far:
-(IBAction)btnBackTapped:(id)sender
{
ViewController * homeScreen = [[ViewController alloc] init];
UINavigationController *nav = [[UINavigationController alloc]
initWithRootViewController:homeScreen];
[self presentViewController:nav animated:YES completion:NULL];
}
But as result of this code, screen turns black and nothing happens. How do I solve this problem? For hiding the nav bar I am using
-(void) viewWillAppear:(BOOL)animated
{
[[self navigationController] setNavigationBarHidden:YES animated:NO];
}
Yes, you have to insert you called viewController to NavigationController,
but if you wont to use modal flow - to close presentedViewController just call:
[self dismissViewControllerAnimated:YES completion:^{
}];
EDITED:
may be it will be more helpful, it just example, put it to you main view controller:
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
UIViewController *c = [[UIViewController alloc] init];
c.view.backgroundColor = [UIColor redColor];
[self presentViewController:c animated:YES completion:^{
[self dismissViewControllerAnimated:YES completion:^{
}];
}];
}
I dont get it please help i DONT get a log when i hit done
- (IBAction)loadScores:(id)sender {
GKGameCenterViewController* gameCenterController = [[GKGameCenterViewController alloc] init];
gameCenterController.viewState = GKGameCenterViewControllerStateLeaderboards;
// gameCenterController.gameCenterDelegate = self;
[self presentViewController:gameCenterController animated:YES completion:nil];
}
-(void)gameCenterViewControllerDidFinish:(GKGameCenterViewController*)gameCenterViewController {
NSLog(#"rfffff");
[self dismissViewControllerAnimated:YES completion:nil];
UIViewController *vc = self.view.window.rootViewController;
[vc dismissViewControllerAnimated:YES completion:nil];
}
You have commented the delegates of the GKGameCenterViewController. This means all the delegate methods will not be called like the one that dismisses the view controller. So I suggest you uncomment this line and then run the code and see.
I come across this issue while doing some testing. I have presented a Modal view, called ModalView1. In ModalView1, when a button is pressed, another Modal view, called ModalView2 would be presented using presentViewController. Then I tried dismissing ModalView2 using dismissViewControllerAnimated but it is not working.
Here is the code fragment in button action
- (void) buttonAction: (UIButton*) sender
{
ModalView *ModalView2 = [[ModalView alloc] init];
[self presentViewController:ModalView2 animated:YES completion:nil];
[self dismissViewControllerAnimated:YES completion:nil];
}
Any help would be much appreciated. Thank you.
It's not clear what you are trying to do. I give you two options:
Presenting ModalView2 and then dismissing ModalView2 (makes no sense to me, but that's what I can read in your question)
- (void) buttonAction: (UIButton*) sender {
ModalView* modalView2 = [[ModalView alloc] init];
[self presentViewController:modalView2 animated:YES completion:^{
[modalView2 dismissViewControllerAnimated:YES completion:nil];
}];
}
Presenting ModalView2 and dismissing ModalView1:
- (void) buttonAction: (UIButton*) sender {
ModalView* modalView2 = [[ModalView alloc] init];
UIViewController* presentingViewController = self.presentingViewController;
[self dismissViewControllerAnimated:YES completion:^{
[presentingViewController presentViewController:modalView2 animated:YES completion:nil];
}];
}
at time present and dismiss not call so give some time
try this it working me
- (void) buttonAction: (UIButton*) sender
{
[self performSelector:#selector(call) withObject:nil afterDelay:.4];
[self dismissViewControllerAnimated:YES completion:nil];
}
-(void)call
{
ModalView *ModalView2 = [[ModalView alloc] init];
[self presentViewController:ModalView2 animated:YES completion:nil];
}