In portaint Actionsheet show in tabbar. In landscape - in window. I heed do remove UIActionSheet from tabbar before rotate, for after rotate show in wondow.
Inside – willRotateToInterfaceOrientation:duration dismiss action sheet dont work.
You can use NSNotification for this. Add this notifier in your viewdidload file you willl get notify when orientation is going to change:
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(OrientationChanged:)
name:#"UIDeviceOrientationDidChangeNotification"
object:nil];
…add this method:
-(void)OrientationChanged
{
}
See NSNotification class reference.
Me i dismiss before rotation and show after, then the UIActionSheet is replaced at middle;
- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
[APP.validSave dismissWithClickedButtonIndex:1 animated:NO];
}
- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
[APP.validSave showInView:APP.navController.view];
}
Related
How to dismiss popover when application enters in background?
You can do this using the delegate method in appdelegate.m file
- (void)applicationDidEnterBackground:(UIApplication *)application
{
//put your dissmiss popover code here
}
it is better to register your controller for UIApplicationDidEnterBackgroundNotification or UIApplicationWillResignActiveNotification and dismiss it whenever your app goes to background, this will make your life quite easier i feel.
registering for notification in your viewDidLoad
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(myMethod)
name:UIApplicationDidEnterBackgroundNotification object:nil];
implement the method and
-(void)myMethod{
// dismiss popview here
}
finally un-register from the notification in your view controller
-(void)dealloc{
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
Send an NSNotification in your app delegate's willResignActive method, and listen for it in your view controller that contains the popup, and have it dismiss said popover when the notification is received.
try this
- (void)applicationDidEnterBackground:(UIApplication *)application
{
//[popover dissmissPopoverAnimated:YES];
}
I use UIImagePickerController to take a picture. I register a notification center for UIApplicationDidBecomeActiveNotification and UIApplicationWillResignActiveNotification
in MainViewController
NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
[nc addObserver:self
selector:#selector(applicationUIDidBecomeActive:)
name:UIApplicationDidBecomeActiveNotification
object:nil];
[nc addObserver:self
selector:#selector(applicationUIWillResignActive:)
name:UIApplicationWillResignActiveNotification
object:nil];
I has CamController which is a subclass of UIImagePickerController
#interface CamController : UIImagePickerController <UIImagePickerControllerDelegate, UINavigationControllerDelegate>
When the application did become active, I will display modal view controller according to the code in MainViewContrller.
- (void) applicationUIDidBecomeActive: (NSNotification *) aNotification {
// camController is a instance of CamController
[camController displayModalWithController:parentViewController animated:NO];
[camController performSelector:#selector(takePicture) withObject:nil afterDelay:1.5];
}
The below code is in CamController which is a subclass of UIImagePickerController
- (void) displayModalWithController: (UIViewController*) aController animated: (BOOL) aAnimated {
if (aController)
[aController presentModalViewController:self animated:aAnimated];
}
- (void) takePicture {
[super takePicture];
}
- (void)imagePickerController: (UIImagePickerController *) aPicker didFinishPickingMediaWithInfo: (NSDictionary *) aInfo {
[self performSelector:#selector(takePicture) withObject:nil afterDelay:[self mCapturingInterval]];
}
When the application will resign active, I dismiss the modal view controller according to the code in MainViewController.
- (void) applicationUIWillResignActive: (NSNotification *) aNotification {
[parentViewController dismissModalViewControllerAnimated:NO];
}
I test this code on iphone 4 ios 4.2.1, sometimes after I relaunch the application,
the view of UIImagePicker (the view that's showing the image that we're going to capture) is resized to be smaller,
not a full screen anymore. I already set the property wantsFullScreenLayout to YES.
When I click home button to bring it to background and then click the application icon to launch application again, the screen may be fullscreen or
resized. What is the cause of this issue?
I have a uiwebview that plays a youtube video. How can I handle the done button action?
Right now, when I tap the done button it changes back to my app main menu (not the menu that was supposed to dismiss to) and it just freezes. Can anyone help me please?
Ps: the menu where the uiwebview is located, was previously presented modally.
The YouTube plug-in player is itself a modal view controller. It is returning to its presentingViewController when the done button is pressed. Its presentingViewController is not your modal view controller but is instead the viewController that called [presentModalViewController:animated:] to present your modal view controller. Since the original modal view controller is still active, the app behaves badly.
To fix the problem,
1) Track whether the modal view controller has been presented but not dismissed.
2) In the viewDidAppear method of the presenting view controller, if the modal view controller was presented and not dismissed, dismiss and present it again.
For example, in controller that is presenting the modal web view controller:
- (void) presentModalWebViewController:(BOOL) animated {
// Create webViewController here.
[self presentModalViewController:webViewController animated:animated];
self.modalWebViewPresented = YES;
}
- (void) dismissModalWebViewController:(BOOL) animated {
self.modalWebViewPresented = NO;
[self dismissModalViewControllerAnimated:animated];
}
- (void) viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
if (self.modalWebViewPresented) {
// Note: iOS thinks the previous modal view controller is displayed.
// It must be dismissed first before a new one can be displayed.
// No animation is needed as the YouTube plugin already provides some.
[self dismissModalWebViewController:NO];
[self presentModalWebViewController:NO];
}
}
This thread is very useful and help me to find the problem!
The answer of lambmj works fine, but I found a better way.
In presenting view controller:
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
if (self.presentedViewController) {
UIViewController *vc = self.presentedViewController;
[vc dismissModalViewControllerAnimated:NO];
[self presentModalViewController:vc
animated:NO];
}
}
Hope this helps!
#Gdx Wu
#lambmj
Thanks for your methods, they work fine. But there is some small problem that after clicking the done button & jumping directly to the presenting view controller, we need to dismiss the presented modal view controller and present it again, which would bring some dither(like flash) between these view controller switches.
Based on this, I highly recommend #IsaacCisneros 's method which would switch seamlessly.
Simply remove UIWebView when it enters full screen; add back UIWebView when it exit full screen. Sample code below assuming a UIViewController with subview of UIWebView, and your UIWebView should have youtube iframe.
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
// Add observer for "Done" button click
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(playerWillExitFullscreen:)
name:#"UIMoviePlayerControllerWillExitFullscreenNotification"
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(playerDidEnterFullscreen:)
name:#"UIMoviePlayerControllerDidEnterFullscreenNotification"
object:nil];
}
- (void)viewDidDisappear:(BOOL)animated {
// Remove observers for "Done" button click
[[NSNotificationCenter defaultCenter] removeObserver:self name:#"UIMoviePlayerControllerWillExitFullscreenNotification" object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self name:#"UIMoviePlayerControllerDidEnterFullscreenNotification" object:nil];
}
- (void)playerWillExitFullscreen:(NSNotification *)notification {
// Before exit full screen, add back UIWebView that have been removed earlier
[self.view addSubview:self.webView];
}
- (void)playerDidEnterFullscreen:(NSNotification *)notification {
if (self.presentingViewController) { // UIWebView is presenting the build-in movie player controller
[self.webView removeFromSuperview]; // Built-in movie player controller is already entering full screen mode
}
}
How can I center an activity indicator programmatically regardless of screen orientation?
Try setting the center property of your activity view, like this:
activity.center = CGPointMake(self.view.frame.size.width/2,self.view.frame.size.height/2);
In viewDidLoad, register for notifications for the device rotation:
- (void)viewDidLoad {
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(didRotate:)
name:UIDeviceOrientationDidChangeNotification object:nil];
}
and implement didRotate:
-(void)didRotate:(NSNotification *)notification {
if (activity) {
activity.center = CGPointMake(self.view.frame.size.width/2,self.view.frame.size.height/2);
}
}
I suggest you use https://github.com/jdg/MBProgressHUD
Which is a great library for doing all kinds of "Loading" screens.
i need to dismiss my uiimagepicker modal viewcontroller automatically when the application enters the background.i tried to put the code to dismissmodalviewcontroller code in viewdiddissappear method,but its not being called.so i made a reference to the viewcontroller in appdelegate and tried to put it in the applicationdidenterbackgroundmethod but still it is not working.can someone point out the right way to do this
Try to add an NSNotificationCenter observer for UIApplicationDidEnterBackgroundNotification in the UIViewController that you want to dismiss. Use the selector to dismiss the modalview
- (void)viewWillAppear:(BOOL)animated
{
[[NSNotificationCenter defaultCenter] addObserver: self
selector: #selector(didEnterBackground:)
name:UIApplicationDidEnterBackgroundNotification
object:nil];
}
- (void)viewWillDisappear:(BOOL)animated
{
[[NSNotificationCenter defaultCenter] removeObserver: self
name:UIApplicationDidEnterBackgroundNotification
object:nil];
}
- (void)didEnterBackground:(NSNotification*)note
{
[self.navigationController dismissModalViewAnimated:NO];
}
Best way to remove the modal when app is moving to background and it works fine .
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(dismissView:)
name:UIApplicationDidEnterBackgroundNotification object:nil];
}
- (void)dismissView:(id)sender {
[self dismissModalViewControllerAnimated:YES];
}
- (void)dealloc {
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
Also you can remove observer like this
[[NSNotificationCenter defaultCenter] removeObserver: self
name:UIApplicationDidEnterBackgroundNotification
object:nil];
I don't think you need to go through all that.
From the docs:
If you present several modal view controllers in succession, and thus build a stack of modal view controllers, calling this method on a view controller lower in the stack dismisses its immediate child view controller and all view controllers above that child on the stack.
Try calling [self dismissModalViewController:NO] from the parent view controller in your implementation of - (void) viewDidUnload.
This is untested, but the docs imply that it should do the job for you.