i want to use UIActionSheet to allow user to choose one of two modes of my iphone app. so i do not need to show cancel button. i just want to ask him if he want to choose mode one or two.
i tried not to add it but it did not allow me so how can i do it ?
note : i do not want to use alerts.
i use this code for adding UIActionSheet:
UIActionSheet *mySheet = [[UIActionSheet alloc] initWithTitle:#"choose one" delegate:nil cancelButtonTitle:#"tasks" destructiveButtonTitle:#"appointments" otherButtonTitles:nil];
[mySheet showInView:self.view];
Try:
UIActionSheet *actionSheet = [[UIActionSheet alloc]initWithTitle:#"Share" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:#"Mode 1",#"Mode 2", nil];
[actionSheet showInView:self.view];
Just set the cancelButtonTitle to nil
Related
First I subclass UIView named MyTextEditorView for overwrite it's inputAccessoryView as readwrite property.
#property (retain, readwrite) UIView *inputAccessoryView;
And I initial UIInputView as display view,then add one UIView as subview;
UIInputVIew *myInputAccessoryView = [[UIInputView alloc] initWithFrame:CGRectMake(0,0,screenWidth,44)];
[myInputAccessoryView addSubview:myDisplayView];
[self setInputAccessoryView:myInputAccessoryView];
[self reloadInputViews];
And I have overriden canBecomeFirstResponder for return YES；
- （BOOL）canBecomeFirstResponder
{
return YES;
}
When I first initial MyTextEditorView in my viewController1 and make it become first responder,then inputAccessoryView automatically appear.But when I push another viewController2 from this viewController1 and back to viewController1 ,inputAccessoryView will not automatically appear after make it become first responder.
However,when I add some code as following:
UIInputVIew *myInputAccessoryView = [[UIInputView alloc] initWithFrame:CGRectMake(0,0,screenWidth,44)];
[myInputAccessoryView addSubview:myDisplayView];
[self setInputAccessoryView:myInputAccessoryView];
[self resignFirstResponder];
[self reloadInputViews];
[self becomeFirstResponder];
After then, this inputAccessoryView can automatically appear in any case.But this confused me and anyone can help me raise why the inputAccessoryView can't appear automatically?Thanks in advance!!!
I test this question on both iOS7 and iOS8. And I find it's an iOS8 bug.After I replace UIActionSheet with UIAlertController on iOS8 platform, this works well.
I guess that UIActionSheet as subclass of UIView is different from UIAlertController as subclass of UIViewController which maybe conflicts with my editor
I've looked through several threads and come to a solution that I thought would work.
UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:#"backbutton.psd"]
style:UIBarButtonItemStyleBordered target:self
action:#selector(barButtonBackPressed:)];
self.navigationItem.leftBarButtonItem = backButton;
This gives me nothing.
When I add this it gives me a regular blue bordered button (which isn't what I want) with the text "Back":
backButton.title = #"Back";
I don't get it.
I believe it's because you're using a PSD image file. That's not a supported format according to Apple documentation.
I am trying to change the action executed by pressing the backBarButtonItem of a Navigation Controller.
I know that i have to edit the backBarButtonItem before the next view (on which the button with custom behavior should appear) is pushed. So in the previous ViewController i added the following code, to push via segue:
#pragma mark - segue methods
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:#"SettingsToProfile"]) {
MyProfileViewController* myprofileVC = [segue destinationViewController];
myprofileVC.myProfile = myProfile;
self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:#"Settings_" style:UIBarButtonItemStylePlain target:myprofileVC action:#selector(popTOSettingsViewController:)];
} else {
self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:#"Settings" style:UIBarButtonItemStylePlain target:nil action:nil];
}
}
The title "Settings_" gets displayed correctly, but "target: myprofileVC action:#selector(popTOSettingsViewController:)" doesn't seem to have any effect at all.
Background:
MyProfileViewController is a View, where the user can edit his/her own information. Whenever the backbarbutton is clicked, i want to check if something in the GUI has been changed by the user. If thats the case, a UIAlterView should ask the user, if he/she wants to save the changing. I tried to work it out with, viewWillDissappear, but the AlterView gets displayed in the next ViewController (and program crashes, if i click on the alterViewButtons).
I'm not sure that you can change the target of a backBarButtonItem. How about self.navigationItem.leftBarButtonItem instead? There's a discussion at self.navigationItem.backBarButtonItem not working ?? Why is the previous menu still showing as the button? that may be relevant.
We have a tab bar + navigation control project. We have created a tab bar through interface builder and added all tab items to the tab bar controller through through interface builder.
Our application has a login screen which we are showing as a modal form at the beginning. Once the user is authenticated, the login screen is dismissed (using dismissModalScreen) and the MainWindow is shown. This is all working fine.
Now, we have a logout option clicking on which we should show the login screen back. We are able to show that as well. But the issue is once the user is authenticated again, we want all the screens to be loaded freshly. Currently, all screens maintain their state and retain previous data.
What we have tried to do is:
[AppDelegate tabBarController release];
AppDelegate.tabBarController = nil;
We have tried releasing the tabBarController and setting it to nil. But once the view is shown, we are not able to select any of the tabs and the view is blank.
What we need is:
Once the user logs in second time, how to release and reload each viewcontroller which are part of tabbar.
Your help will be greatly appreciated.
We have found a way out. What we are doing now is, once the user logs back in, we are releasing the view controllers and recreating them and setting it back to the uitabbar.
NSMutableArray *arrControllers = [[AppDelegate.tabBarController.viewControllers] mutablecopy];
[arrControllers removeAtIndex:3];
[arrControllers removeAtIndex:2];
----Create New Controllers
UIViewController viewController2 = [[UIViewController alloc] initWithNibName:#"viewController2" bundle:nil] autorelease];
UIViewController viewController3 = [[UIViewController alloc] initWithNibName:#"viewController3" bundle:nil] autorelease];
--Create Nav controller
UINavigationController navViewController2 = [[[UINavigationController alloc] initWithRootViewController:viewController2 ] autorelease];
UINavigationController navViewController3 = [[[UINavigationController alloc] initWithRootViewController:viewController3 ] autorelease];
[arrControllers addObject:navViewController2];
[arrControllers addObject:navViewController3];
[AppDelegate.tabViewController setViewControllers:arrControllers];
It is working fine after this change.
Only problem we faced was if we release all objects from the array, we get a carsh. Is it because, when you release allObjects, the first controller which is the RootViewController is getting released?
Thanks
I am building my first iPad application. And one of my requirements is to deal with UISplitviewcontroller and UINavigationController.our proposed view hierarchy is (LoginView) ->UINavigationView(LandingView + CollectionView)->UISplitViewcontroller( DetailsView).Our app supports only landscape mode
I am referring this SO Question( and GILT app as well), as a newbi its hard for me to get it done based on that description.
So my questions are
1) How can I achieve same thing,if somebody can give small code snippets or reference to tutorial
2) As per Apples HIG, UISplitviewcontroller should be rootviewcontroller,what if it not. Will apple reject my app.(apparently GILT group has been approved)
3) I found MGSplitViewController , can I use that one not as root?
Any help would be appreciated. As a newbi i hope my question is genuine
If you want to use the out-of the box splitView it must be root; any hokeary-pokery here will either break apples guidelines or manifest very odd behaviour.
The MGSplitViewController is completely custom implementation of a SplitViewController. Its very good if you need that sort of thing, but some of the features are based round the fact that our app will be orientating.
Alternatively you could make your own. I have done this more than once and is easier than it sounds.
(LoginView)
->UINavigationView(LandingView + CollectionView)->UISplitViewcontroller(
DetailsView).
Based on an out-of-the-box UISplitView, I would suggest:
Make the splitView the root View.
Pop (not animated) a full screen Modal as soon as the app starts and allow the
user to navigate the loginView,
LandingView and collectView in this; i also recommend using a navController here.
Once the user is ready to proceed to
the splitView, populate the
splitView's rootView Controller and
DetailViewController with whatever
you want then ,animate the Modal out.
Dave does have a point, but i would look at it from the point of view that you are removing the choice of orientation from the user; removing standard choices (like supported orientations) because the designer assumes some configuration is more efficient will only annoy some users.
I did it by making a method in my detailViewController:
-(void)popHomeScreen:(BOOL)animated//OPENS THE HOMESCREEN IN A MODAL DISPLAY
{
firstRun=NO;
//myViewControllerForPopOver init here
myViewControllerForPopOver.modalPresentationStyle = UIModalPresentationFullScreen;
myViewControllerForPopOver.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;//simple anime
if (animated) [self presentModalViewController:myViewControllerForPopOver animated:YES];
else [self presentModalViewController:myViewControllerForPopOver animated:NO];
}
Then Call it in the detailViewControllers ViewDidAppear method:
-(void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
if(firstRun)[self popHomeScreen:NO];
}
//YOU WILL ALSO NEED TO MAKE 'firstRun=YES' in viewDidLoad
//firstRun is a BOOL
As for the root disappearing (leaving a big black space)..thats a known bug. though i thought for a while that it was caused by ordering an animation while/just before it was going to draw itself.
Also, i found that if i popped a full screen modal over the splitView then popped another form based modal (for example) quickly after it the full screen modal didn't draw properly.
SplitViews are like your mother-in-law, you don't really like them and when you have to use them you have to tip-toe round the landmines.
Try this, it works for me
1) in app delegate's didFinishLaunchingWithOptions make your login view to root view
self.window.rootViewController = self.loginViewController;
also, init the split view as the template do ( but not add to self.window)
MasterViewController *masterViewController = [[[MasterViewController alloc] initWithNibName:#"MasterViewController_iPad" bundle:nil] autorelease];
UINavigationController *masterNavigationController = [[[UINavigationController alloc] initWithRootViewController:masterViewController] autorelease];
DetailViewController *detailViewController = [[[DetailViewController alloc] initWithNibName:#"DetailViewController_iPad" bundle:nil] autorelease];
UINavigationController *detailNavigationController = [[[UINavigationController alloc] initWithRootViewController:detailViewController] autorelease];
self.splitViewController = [[[UISplitViewController alloc] init] autorelease];
self.splitViewController.delegate = detailViewController;
self.splitViewController.viewControllers = [NSArray arrayWithObjects:masterNavigationController ,detailNavigationController, nil];
2) add a swap view controller in app's delegate, which swap the root view to split viewcontroller.
-(void)swapToViewControllers:(RootViewControllerType)viewType
self.window.rootViewController = self.splitViewController;
3) invoke the swapToViewControllers in your login view.
Keep in mind that the HIG strongly encourages you to support all orientations. Unless you have a very, very good reason to support landscape only, you'll probably be rejected.
See page 19 of the HIG: http://developer.apple.com/library/ios/documentation/General/Conceptual/iPadHIG/iPadHIG.pdf
Modified Ryan CY's version with storyboard.
Put this code to login controller.
1. Set storyboard id of UISplitViewController to SplitViewController;
2. Set UISplitViewController delegate and save instance
UISplitViewController* splitController = [self.storyboard instantiateViewControllerWithIdentifier:#"SplitViewController"];
UINavigationController* navigationController = [splitController.viewControllers lastObject];
splitController.delegate = (id)navigationController.topViewController;
3. Change rootViewController after login
self.view.window.rootViewController = splitController;