I need to fully UNLOAD the flipview don't ask me why but i NEED to. i have tried [super release]; and it didnt work below is my back button and then the did finish. Please help me to unload the view.
on the first view which gets activated once the flipview has finished.
- (void)flipViewControllerDidFinish:(FlipViewController *)controller
{
[self dismissModalViewControllerAnimated:YES];
}
on the flip view which is a button that hides the flip view just hides doesn't unload
- (IBAction)Back:(id)sender
{
[self.delegate flipViewControllerDidFinish:self];
}
[myFlipViewController.view removeFromSuperview];
Related
i have a screen having navigation controller and text field. when i move next and come back i want the keyboard should be hidden in first screen. I am hiding keyboard like on textfield event.
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
[textField resignFirstResponder];
return NO;
}
But how to do that in View related events so that whenever my view appears keyboard is hidden..
Pls guide/Help.
thanks in adv.
I think this is also a good way to remove keyboard with in iOS App if your UITextView or UITextField not connected through the IBOutlet.
If you want to Hide Keyboard with UIViewController LifeCycle Events like with viewWillAppear or etc. Follow this
-(void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[[self view] endEditing:YES];
}
Otherwise if you object connected using IBOutLet this code will work fine as you describe too.
[yourTextField resignFirstResponder];
Add this code to your ViewWillAppear :
for(id obj in self.view.subviews)
{
if([obj isKindOfClass:[UITextField class]])
{
[obj resignFirstResponder];
}
}
This would take in all the textfields in that particular view here it is the whole view and add the code you had written previously for removing the keyboard.
A good habit is to write this code in your screen's -viewWillDisappear. So, when you navigate from one screen to another at that time it will remove the keyboard from that screen.
- (void)viewWillDisappear:(BOOL)animated
{
[self.view endEditing:YES];
[super viewWillDisappear:animated];
}
For multiple textFields, it is better to use -endEditing for that particular view instead of -resignFirstResponder for any single textField. Take a look at my Answer.
//This is for Swift
override func viewWillAppear(animated: Bool)
{
self.view.endEditing(true)
}
The thing that you are doing wrong is , when you are moving back previous controller to the current controller , the keyboard is up due to the selected textfield of previous controller .
And in the current controller the code:
-(void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[[self view] endEditing:YES];
}
It will not work as no textfield is selected at this controller. So what you need to do is write the same code in the previous controller viewWillDisappear Method it will surely resolve your Problem .
- (void)viewWillDisappear:(BOOL)animated
{
[self.view endEditing:YES];
[super viewWillDisappear:animated];
}
When i push Back button on Navigation controller app is successfully return to the controller view, but dont stop video streaming.
I write:
- (void)viewDidUnload
{
[self setDescText:nil];
[super viewDidUnload];
[moviePlayerController stop];
[moviePlayerController.view removeFromSuperview];
// Release any retained subviews of the main view.
}
but not help.
Please, give me advice.
viewDidUnload is only called in low-memory conditions. You want viewDidDisappear.
- (void)viewDidDisappear:(BOOL)animated
UIViewController Class Reference
I am trying to hide the navigation bar 'back' button during an animation. When the animation completes, the button re-appears.
my code is as follows:
- (void) animateResults {
[self hideNavBarButtons];
[self animatePlayer1];
[self animatePlayer2];
[self performSelector:#selector(showNavBarButtons) withObject:nil afterDelay:3.0];
}
- (void) hideNavBarButtons {
[self.navigationItem setHidesBackButton:YES animated:YES];
}
- (void) showNavBarButtons {
[self.navigationItem setHidesBackButton:NO animated:YES];
}
This works fine on the simulator... but I get weird results on the device. It is very inconsistent, and stops hiding the 'back' button after a few tries. I am assuming I have some delegates messed up.. but I am lost. Any help is appreciated.
Thanks.
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
}
}
I am making an application with TabBar. But TabBarController is not RootViewController. In the Tab Bar there are 4 tabs. One of those tabs is history which is linked with a table view which shows history. I want to refresh that view every time when i click that so that i can get updated tableview. How can i do that? Thanks in advance.
use - (void) viewWillAppear:(BOOL)animated to update any content in your view.
- (void) viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
// You code here to update the view.
}
This method will be called every time the view is about to be displayed.
below code added plz ^^
If you change a tabBarIndex, At the same time -(void)viewWillAppear called.
-(void)viewWillAppear:(BOOL)animated
{
// force the tableview to load
[tableView reloadData];
}
refer a Apple Sample Code: that is amazing great tutorial for you about UITabBarController
http://developer.apple.com/library/ios/#samplecode/TheElements/Introduction/Intro.html
Apple Sample Code is no added [super viewWillAppear:animated];
-(void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:YES];
if ([Globals sharedInstance].isFromFindSimiler)
{
[self.view addSubview:_findSimilerView];
[_historyTableView setFrame:CGRectMake(0, 85, 320, 490)];
}
else
{
[self history_webservice];
}
}
I have achieved this. In this case, whenever user tabs on History screen I call web service for history and update tableview.
instead of using (void)ViewDidLoad use viewWillAppear:(BOOL)animated
- (void) viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
//your code
}