I have an NSButton that, when clicked, opens an NSPopover, my only problem is that when the button is clicked again, the NSPopover opens again on top of the other one, the pop over is opened using:
- (IBAction)openSettingsPopover:(id)sender {
NSViewController *controller = [[NSViewController alloc] initWithNibName:#"Settings" bundle:nil];
NSPopover *popover = [[NSPopover alloc] init];
[popover setContentSize:NSMakeSize(288.0f, 170.0f)];
[popover setContentViewController:controller];
[popover setAnimates:YES];
[popover showRelativeToRect:[sender bounds] ofView:sender preferredEdge:NSMaxXEdge];
}
How would I go about dismissing the popover rather than opening another one, same for if the user clicks outside the view? Thanks in advance.
Keep a reference to the NSPopover instance, check if it's not-nil before opening a new one
- (IBAction)openSettingsPopover:(id)sender {
if (self.settingsPopover) {
// Close it when clicked again, or simply return
[self.settingsPopover close];
}
self.settingsPopover = [[NSPopover alloc] init];
...
}
An easier way is to change it's behavior.
Just set the behavior property to NSPopOverBehaviourTransient and when the user interacts with another UI element not in the popover it will be dismissed.
[popover setBehaviour:NSPopOverBehaviourTransient];
Related
I need to implement a login UI in my tvOS application, but I don't want to use UIAlertController for the text input. Instead of this I want to implement a text input UI similar to the iCloud Sign In in the Settings app without any additional UITextFields.
You can do it with a table view populated with some cells with embedded text fields.
These UITextField than becomes input responder like:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
// my UITableViewCell extended with UITextField
TextFieldCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
[cell.textField becomeFirstResponder];
}
place text field on a view (If you dont wont to show it, place it out of borders)
in viewController code add inputAccesoryView method
When you need to show your input view - call [self.loginTextField becomeFirstResponder];
I found that input accesory view located in top right corner of standart input view, so code for it should look like this:
-(UIView *)inputAccessoryView {
if (!inputAccessoryView) {
CGRect accessFrame = CGRectMake(0, 0, 1920, 200);
inputAccessoryView = [[UIView alloc] initWithFrame:accessFrame];
titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(-500, -100, 1000, 100)];
titleLabel.font = [UIFont systemFontOfSize:59];
titleLabel.textColor = [UIColor whiteColor];
titleLabel.text = #"Login";
titleLabel.textAlignment = NSTextAlignmentCenter;
[inputAccessoryView addSubview:titleLabel];
descriptionLabel = [[UILabel alloc] initWithFrame:CGRectMake(-500, 0, 1000, 100)];
descriptionLabel.font = [UIFont systemFontOfSize:29];
descriptionLabel.textColor = [UIColor whiteColor];
descriptionLabel.text = #"Enter your E-mail or Login";
descriptionLabel.textAlignment = NSTextAlignmentCenter;
[inputAccessoryView addSubview:descriptionLabel];
}
return inputAccessoryView;
}
It work for me.
Still having issues with pushing a new UIView on rotation. I am following an example that I found. It's SO freaking close. It wigs out with an error at this point with the error of;
'NSInvalidArgumentException', reason: 'Application tried to present a nil modal view controller on target .'
controller nvs = [self.storyboard instantiateViewControllerWithIdentifier:#"LandscapeView"];
[self.navigationController pushViewController:nvs animated:YES]
Clearly, I'm missing something here. What I'm trying to achieve is a different view pushed onto the stack when the user rotates their device. Like calendar.
Entire statement
LandscapeViewController * nvs;
- (void)updateLandscapeView
{
UIDeviceOrientation deviceOrientation = [UIDevice currentDevice].orientation;
if (UIDeviceOrientationIsLandscape(deviceOrientation) && self.presentedViewController == nil)
{
if (!self.landscapeViewController)
//self.landscapeViewController = [[LandscapeViewController alloc] initWithNibName:#"LandscapeView" bundle:nil];
//Set the location of the where you want the view to go i.e. the next view controller
nvs = [self.storyboard instantiateViewControllerWithIdentifier:#"LandscapeView"];
//Push the view onto the device
[self.navigationController pushViewController:nvs animated:YES];
if ([self respondsToSelector:#selector(presentViewController:animated:completion:)])
[self presentViewController:self.landscapeViewController animated:YES completion:NULL];
else
[self presentModalViewController:self.landscapeViewController animated:YES];
}
else if (deviceOrientation == UIDeviceOrientationPortrait && self.presentedViewController != nil)
{
if ([self respondsToSelector:#selector(dismissViewControllerAnimated:completion:)])
[self dismissViewControllerAnimated:YES completion:NULL];
else
[self dismissModalViewControllerAnimated:YES];
}
}
Thanks in advance!
Jeremy
Got it. Rather then pushViewController pushing nvs which was set outside the statement. I referenced it directly in using self.landscapeViewController.
Below is the code. Hope this helps someone in the future.
self.landscapeViewController = [self.storyboard instantiateViewControllerWithIdentifier:#"LandscapeView"];
[self.navigationController pushViewController:self.landscapeViewController animated:YES];
I have an item detail view which I would like to use for two purposes:
1) to create a new item
2) to edit an existing item
When editing, the view will be pushed onto the navigation stack, getting the nav bar from it's parent.
On item creation, I want to present the view modally, but still have a navigation bar at the top, with "Done" and "Cancel" buttons.
What I don't want is to ever see the view with two nav bars, or none.
How would I implement this?
In order to accomplish this I:
Removed the nav bar from my view.
When launching modally, first created a nav controller, and then displayed the nav controller modally with my view as the root view (even though I didn't plan on pushing anything else onto the stack). So changed this:
StoreDetailView *storeDetailView = [[StoreDetailView alloc] initWithNibName:#"StoreDetailView" bundle:nil];
// ... configure the view, including setting delegate...
[self presentViewController:storeDetailView animated:YES completion: nil];
to this:
StoreDetailView *storeDetailView = [[StoreDetailView alloc] initWithNibName:#"StoreDetailView" bundle:nil];
// ... configure the view, including setting delegate...
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:storeDetailView];
[self presentViewController:navController animated:YES completion: nil];
And then in the StoreDetailView, determined what the nav bar should look like based on whether the delegate was set:
if (self.delegate == nil) {
self.navigationItem.rightBarButtonItem = [self editButtonItem];
} else {
[self setEditing:TRUE];
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:#selector(done:)];
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:#selector(cancel:)];
}
I'm making an html editor component for an app (using UIWebView with contentEditable in iOS 5.0), and got stuck at how to handle UIWebView first responder status
[webView isFirstResponder], [webView becomeFirstResponder] and [webView resignFirstResponder] don't seem to work, and i've no idea how to make the webView become or resign it by code
If anyone knows how to work this out i would be very grateful, thanks in advance!
Here is how I overwrite these methods in a UIWebView subclass (content is the id of the editable element):
-(BOOL)resignFirstResponder {
[self setUserInteractionEnabled:NO];[self setUserInteractionEnabled:YES];
return [super resignFirstResponder];
}
// only works on iOS 6+
-(void)becomeFirstResponder {
self.keyboardDisplayRequiresUserAction = NO; // set here or during initialization
// important note: in some situations (newer iOS versions), it is also required to first call `blur()` on the 'content' element, otherwise the keyboard won't show up as expected
[self stringByEvaluatingJavaScriptFromString:#"document.getElementById('content').focus()"];
}
-(BOOL)isFirstResponder{
if ([[self stringByEvaluatingJavaScriptFromString:#"document.activeElement.id=='content'"] isEqualToString:#"true"]) {
return YES;
}
else {
return NO;
}
}
isFirstResponder will only return true after the keyboard is shown (e.g, it will return false at UIKeyboardWillShowNotification)
In case this is an issue, another way to check if the UIWebView is the first responder is as follows:
+(BOOL)isFirstResponder:(UIView *)v{
for (UIView *vs in v.subviews) {
if ([vs isFirstResponder] || [self isFirstResponder:vs]) {
return YES;
}
}
return NO;
}
-(BOOL)isFirstResponder{
return [[self class] isFirstResponder:self];
}
This way, the returned value will be YES even before/after the keyboard animation finishes (showing or hiding).
I met the same problem recently, but solved it using pure JavaScript. Actually it doesn't need any Objective-C First Responder related methods. I just used the JavaScript to change the UIWebView's content - the targeting HTML element's contentEditable attribute value according to the requirement.
For example, using the following code to hide the Keyboard that called by the UIWebView's editable content:
[webView stringByEvaluatingJavaScriptFromString:#"document.getElementById('target').setAttribute('contentEditable','false')"];
Hope this is helpful. :)
Here is how I overwrite these methods in a UIWebView subclass (content is the id of the editable element):
[_webView stringByEvaluatingJavaScriptFromString:#"document.getElementById('content').focus()"];
But Focus go to 1st point not last point
Call the following lines of code when you want to hide the keyboard.
//wView is your UIWebView
NSString *webText = [wView stringByEvaluatingJavaScriptFromString:#"document.body.innerHTML"];
[wView loadHTMLString:webText baseURL:nil];
[webView loadHTMLString:[NSString stringWithFormat:#"%#", htmlString] baseURL:nil];
This works in iOS > 4
When I use the following code to insert a view on top of a split view, I am getting orientation problems.
Here is the code I use,
[window addSubview:aSplitViewController.view];
[window insertSubview:aViewController.view aboveSubview:aSplitViewController.view];
What happens here is that the view controller ( which contains labels and buttons) loads in landscape mode while its components load in portrait mode...
I feel that the window insertSubview is creating this problem because when I used [window addSubview:aViewController.view] the view is getting displayed properly in landscape mode with its components in landscape mode as well...
Here is the code which I feel is giving me the problem
In my App Delegate
- (void) makeSplitViewController {
NSMutableArray *controllers = [NSMutableArray arrayWithArray:tabBarController.viewControllers];
// First tabbbar item
// detail view
detailViewController = [[DetailViewController alloc] initWithNibName:#"DetailView" bundle:nil];
UINavigationController *navDetailView = [[[UINavigationController alloc] initWithRootViewController:detailViewController] autorelease];
navDetailView.hidesBottomBarWhenPushed = YES;
// root view
rootViewController = [[RootViewController alloc] initWithStyle:UITableViewStylePlain];
rootViewController.detailViewController = detailViewController;
rootViewController.navigationItem.title = #"List";
UINavigationController *navRootView = [[[UINavigationController alloc] initWithRootViewController:rootViewController] autorelease];
navRootView.hidesBottomBarWhenPushed = YES;
navRootView.navigationBar.barStyle = UIBarStyleBlackTranslucent;
splitViewController = [[UISplitViewController alloc] init];
splitViewController.tabBarItem.title = #"Face Sheet";
splitViewController.tabBarItem.image = [UIImage imageNamed:#"gear1.png"];
splitViewController.navigationItem.title = #"Face Sheet";
splitViewController.viewControllers = [NSArray arrayWithObjects:navRootView, navDetailView, nil];
splitViewController.delegate = detailViewController;
splitViewController.hidesBottomBarWhenPushed = YES;
[controllers addObject:splitViewController];
// Second tabbbar item
scoreViewController = [[ScoreCardViewController alloc] initWithNibName:#"TableViewController" bundle:nil];
scoreViewController.tabBarItem.title = #"Score Card";
scoreViewController.tabBarItem.image = [UIImage imageNamed:#"gear1.png"];
scoreViewController.navigationItem.title = #"Score Card";
[controllers addObject:scoreViewController];
tabBarController.viewControllers = controllers;
}
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
// Create tabbar
tabBarController = [[UITabBarController alloc] init];
//tabBarController.delegate = self;
// Set window
[window addSubview:splashController.view];
[window insertSubview:tabBarController.view belowSubview:splashController.view];
[self.window makeKeyAndVisible];
application.statusBarOrientation = UIInterfaceOrientationLandscapeRight;
return YES;
}
and here is the code in my SplashScreenView
- (IBAction) proceedButtonClick:(id)sender
{
// Initialize loginpopview
PhysicianLoginViewController *loginViewController = [[PhysicianLoginViewController alloc] init];
popOverController = [[UIPopoverController alloc] initWithContentViewController:loginViewController];
popOverController.popoverContentSize = CGSizeMake(350, 200);
popOverController.delegate = self;
// Set a notification to dismiss it later
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(loginViewControllerDone:) name:#"loginViewControllerDone" object:popOverController.contentViewController];
// Present popover
if ([popOverController isPopoverVisible])
{
[popOverController dismissPopoverAnimated:YES];
}
else
{
[popOverController presentPopoverFromRect:CGRectMake(485, 600, 100, 100) inView:self.view permittedArrowDirections:UIPopoverArrowDirectionDown animated:YES];
}
}
// Dismiss popview controller and setup the tabbar
- (void)loginViewControllerDone:(NSNotification *)notification
{
[[NSNotificationCenter defaultCenter] removeObserver:self];
// Button in content view controller was tapped, dismiss popover...
[self.popOverController dismissPopoverAnimated:YES];
// remove subview
[self.view removeFromSuperview];
// set tabbar
i3EAppDelegate *appDelegate = (i3EAppDelegate *) [[UIApplication sharedApplication]delegate];
[appDelegate makeSplitViewController];
}
It would be great if someone could point out where I am going wrong. I have been stuck with this problem for quite a few days and I have tried everything that comes to my mind...
Your problem is that the rotation handling of UIWindow and UIViewController just isn't designed to work that way. Quoth the documentation:
In an iOS application, the window object does much of the work associated with changing the current orientation. However, it works in conjunction with the application’s view controllers to determine whether an orientation change should occur at all, and if so, what additional methods should be called to respond to the change. Specifically, it works with the view controller whose root view was most recently added to, or presented in, the window. In other words, the window object works only with the frontmost view controller whose view was displayed using one of the mechanisms described in “Presenting a View Controller’s View.”
This paragraph is somewhat vague and contradictory (is it the most recently added view controller, or the controller for the topmost view?), and in practice doesn't seem to necessarily match observations. The bottom line is that adding multiple views to a UIWindow will screw up the automatic rotation handling.
You should change your code to use presentModalViewController:animated: (maybe with modalPresentationStyle set to UIModalPresentationFormSheet) or a UIPopoverController instead of adding multiple subviews to the window.
Try:
[aViewController.view setAutoresizingMask:UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight];