I am currently working with a UISplitViewController and instead of having this default slide-out-menu, i want a real UIPopover that appears if i click the UIBarButtonItem. What do i have to do and is there an easy way of configuring this ?
You first need to overwrite the left bar button item, with the button that can be used to display the popover.
Use the following -
UIBarButtonItem *barBtn = [[UIBarButtonItem alloc] initWithTitle:#"Popover" style:UIBarButtonItemStylePlain target:self action:#selector(presentPopover:)];
self.navigationItem.hidesBackButton = NO;
self.navigationItem.leftBarButtonItem = nil;
Now you can use the target added, and then perform the associated function, as per your choice.
-(IBAction)presentPopover:(id)sender
{
// Perform your operations
}
Then just use a popover view controller instead with the same content you would have used in the splitview pane that slides out.
Related
My app is navigated by a slide out menu from the left. On top of each viewController is a left UIBarButton titled "Navigation", that when touched, opens the slide out menu without having to do the drag effect. I am implementing speech commands into my app, and if a user speaks "Go to Finances", it segues to a viewController titled FianceViewController through instantiateViewController to pushViewController.
This all works fine, the only problem is the back button associated with push segue covers up my "Navigation" button in the left slot of the UINavigationBar. Using self.navigationItem.hidesBackButton = YES; hides both the back button and my "Navigation" button. Is there anyway not make a back button appear when the push happens, but still allow my previously created "Navigation" bar button to be seen and used? Or is there another type of segue that I can do other than push if this UIBarButton dilemma cannot be solved?
Section of code that segues when spoken:
if ([title isEqualToString:#"FINANCES"])
{
FinanceViewController *fvc = [[self storyboard] instantiateViewControllerWithIdentifier:#"finance"];
[[self navigationController] pushViewController:fvc animated:YES];
}
How are you adding the navigation button?
I would try to add it after hiding the back button, something like this:
self.navigationItem.hidesBackButton = YES;
UIButton *navigationButton = [[UIButton alloc] initWithFrame:CGRectMake(15.0, 15.0, 100.0, 32.0)];
self.navigationController.navigationBar.backItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:navigationButton];
Instead of hiding my back button, I figured out I could simply write over it! Using fvc.navigationItem.leftBarButtonItem = self.navigationItem.leftBarButtonItem; before pushViewController, allows the "navigation" button to override the back button.
I have an app that uses a side menu and has a few main screens that can be accessed from the menu and others that can only be accessed from these screens.
What I want is to have a menu button on the navigation bar that opens the menu and can only be visible on the main screens. On the other screens I want to have a back button, instead of the menu button.
I've already put the menu button like this:
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:#"IconMenu"] style:UIBarButtonItemStylePlain target:self.revealViewController action:#selector(revealToggle:)];
But I can't figure out how to change it with the back button when I need it.
Assuming than by "main screens" you mean root (first) view controllers in the navigation view controllers corresponding to the selected side menu items, this might be a solution for your problem: you can create a superclass for all your view controllers, say MyBaseViewController and rewrite viewWillAppear: method, that will determine whether it should have a default back button or a "revealSideMenu" button, based on whether it's a "main screen" or not.
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
if (self == [self.navigationController.viewControllers firstObject]) {
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:#"IconMenu"] style:UIBarButtonItemStylePlain target:self.revealViewController action:#selector(revealToggle:)];
}
}
you can do that in 2 different ways:
the first is in the viewDidAppear check if the back button is already present (when you push a VC the back button automatically added but is avalaible programmatically only after the viewDidAppear) and then decide to add or not the menu button,
the second is add a parameter to your VC init method like isRoot or hasMenu or whatever you like to name it, and using that flag decide to add the menu or the back button
if you chose to add your own back button you have to call this method in your back selector
[self.navigationController popViewControllerAnimated:YES];
The easiest way, IMO, is just to click on the title bar of the first ViewController and in the Attribute Inspector (⌥+⌘+4) change the Navigation Item info the way you want: Title -> what will show up in the back button* or if you want it to say something other than the Title of the first ViewController or the word "Back" you can just put it in the Back Button field.
*If the Title of the second ViewController is too long for it to fit it will be replaced with the word "Back" (and if the word "Back" doesn't fit it will only have the arrow sign).
in iOS, is it possible to add a button next to the default back button (the one that is automatically created when you use the method pushViewController)
I've tried to use the methods setLeftBarButtonItems and setBackBarButtonItem but in vain - whenever I set the left bar button items, the default back button disappears.
Thanks for your help!
Just do
self.navigationItem.leftItemsSupplementBackButton = YES;
self.navigationItem.leftBarButtonItems = #[item1, item2];
I haven't tested the following code, but it should work as long as the backBarButtonItem has been initialised.
[[self navigationItem] setLeftBarButtonItems:[NSArray arrayWithObjects:[[self navigationItem] backBarButtonItem], [[UIBarButtonItem alloc] initWithTitle:#"Custom" style:UIBarButtonItemStylePlain target:self action:#selector(action:)], nil]];\
Essentially, you're setting the entire left bar button item array from scratch but providing the back button along with your own custom button.
My question is next:
In interface builder i create UINavigationBar and I want to create 'Back' button item, but I dont see any button.
I use this code:
UIBarButtonItem *myBarButtonItem = [[UIBarButtonItem alloc] init];
myBarButtonItem.title = #"Back";
mynavBar.backItem.backBarButtonItem = myBarButtonItem;
mynavBar - this is my IBOutlet.
Thanks for help!
You can use a navigation bar as a standalone control or in conjunction with a navigation controller. When you use a navigation bar as a standalone control you use a navigation item (an instance of the UINavigationItem class) to specify what buttons or custom views you want displayed.
So in your case you would use something like this:
UIBarButtonItem *myBarButtonItem = [[[UIBarButtonItem alloc] init] autorelease];
myBarButtonItem.title = #"Back";
UINavigationItem *right = [[[UINavigationItem alloc] initWithTitle:#"Hello!"] autorelease];
right.leftBarButtonItem = myBarButtonItem;
[mynavBar pushNavigationItem:right animated:YES];
You may want to look into using UINavigationViewController though.
If you want a custom button on the left, use mynavBar.leftBarButtonItem instead of backItem.
The backItem will only be visible, after you presented another viewcontroller via pushViewController:. (If you didn't set you own backbutton, the default backButton with the title of the previous viewController will be created automatically.)
//edit: perhaps you look for that:
Draw custom Back button on iPhone Navigation Bar
I think this is the actual way apple want this to be implemented.
Put UINavigationBar
Set outlet to the UINavigationItem
This is the catch
Override navigationItem property to return the UINavigationItem you created.
That's it.
-(UINavigationItem *) navigationItem
{
return self.navigationItem1;
}
If your navigationItem is still in the UINavigationBar, I think you will need to have a strong outlet to the UINavigation Bar too. Please correct me if I am wrong here.
I've tried this for hours but I still cannot solve it.
When using UINavigationController and push a new view controller on top, I got a free "back" button on the left of the navigation bar. I want another button just next to it (to show a popover menu). I wonder what is the correct way to do that. Or I have to hide the free back button and make the same one by myself? If that's the case, I also need to pop the current view controller when pressing my own back button, right?
Thanks for your help.
As stated by steipete in the comment to the question, this is possible starting from iOS 5. You can use
self.navigationItem.leftItemsSupplementBackButton = YES;
and then you just need to add an UIBarButtonItem as leftButton to get a second button after the back button
UIBarButtonItem *secondButton = [[UIBarButtonItem alloc] initWithTitle:#"Second" style:UIBarButtonItemStylePlain target:self action:#selector(yourAction)];
self.navigationItem.leftBarButtonItem = secondButton;
SWIFT 5 this worked for me. Thanks
self.navigationItem.leftItemsSupplementBackButton = true