I am losing my mind setting the right button on my custom Navigation Controller.
I have my class that extends the UINavigationCOntroller. I cleaned everything and am just runnig the following code on the viewDidAppear.
navigationBar.topItem?.title = "Carpool"
let languagesSpinner = UIBarButtonItem(title: "PT", style: .done, target: self, action: #selector(didClickLanguagesButton))
navigationItem.setRightBarButton(languagesSpinner, animated: true)
The title is seted up but not the button.
The strange thing is that, the item is setted up when i debug with po.
Can anyone help me please?
You are setting title with navigationBar.topItem and setting rightBarButton with navigationItem so try setting rightBarButton also with navigationBar.topItem .
Try once
navigationBar.topItem?.setRightBarButton(languagesSpinner, animated: true)
Instead of
navigationItem.setRightBarButton(languagesSpinner, animated: true)
Related
I'm trying to add a UIBarButtonItem programmatically.
let navigation = UINavigationController()
let rightBarButton = UIBarButtonItem(title: "LogIn", style: .plain, target: self, action: #selector(logInPressed))
navigation.navigationItem.rightBarButtonItem = rightBarButton
And also made a selector function for testing.
#objc func logInPressed() {
print("go to login")
}
Unfortunately that does not work - bar button is not visible on navigation bar in simulator.
Checked with a breakpoint, rightBarButtonItem exists.
Probably issue can be caused by creating bar button from app coordinator, not from child VC.
Could please anyone help to troubleshoot this issue?
Simulator screenshot
you are adding UIBarButtonItem to a new instance of NavigationController. so it will not appear there.
so in your view controller which you want to handle right navigation bar , under one of these methods:
override func viewDidLoad()
or
override func viewWillAppear
add:
let rightBarButton = UIBarButtonItem(title: "LogIn", style: .plain, target: self, action: #selector(logInPressed))
self.navigationController?.navigationItem.setRightBarButton(rightBarButton, animated: true)
Issue was caused by creating bar button not from child VC, but coordinator.
Bar buttons are stored in navigationItem property of UIViewController.
there is one screen that i don't want to show back button symbols.
i create a empty image and change the navigation bar back button image.(code like following)
navigationController?.navigationBar.backIndicatorImage = UIImage(named: "mainicon_gray-13")
navigationController?.navigationBar.backIndicatorTransitionMaskImage = UIImage(named: "mainicon_gray-13")
navigationItem.backBarButtonItem = UIBarButtonItem(title: "demo", style: .plain, target: nil, action: nil)
screen like following Picture
But all of backBarButtonItem changed, i need to set backBarButtonItem to default symbols "<" when i back to the view.
Is there any way to set navigation bar back button image to default image?
i want the navigationBar like following picture
following is the way that i found without change back button settings to do same event.
use leftBarButtonItem and set popViewController to go back before screen.
override func viewDidLoad() {
navigationItem.leftBarButtonItem = UIBarButtonItem(title: "test", style: .plain, target: self,action: #selector(backViewBtnFnc))
}
#objc func backViewBtnFnc(){
self.navigationController?.popViewController(animated: true)
}
I am trying to set a custom BarButtonItem to my NavigationBar of my DetailsVC in my UISplitViewController with these two lines of code:
let barbuttonitem = UIBarButtonItem(title: "Hi", style: .plain, target: nil, action: nil)
navigationItem.rightBarButtonItems = [barbuttonitem]
but somehow nothing happens. When i create a new project and add these 2 lines of codes for my navBar it works, but in my real App it doesn't.
Thanks for your help
I'm not sure why this piece of code which is supposed to embed two bar button items in a navigation controller's toolbar won't work. The toolbar itself is visible when I run my code, but not the bar button items. What am I doing wrong here? Thanks for attention.
class NavigationController: UINavigationController {
override func viewDidLoad() {
super.viewDidLoad()
//Tool bar appearance
toolbar.barTintColor = UIColor.blackColor()
//Show tool bar by default
self.navigationController?.toolbarHidden = false
//Icons all located in images.xcassets
let homeImage = UIImage(named: "home")
let gameImage = UIImage(named: "logo")
var toolBarItems = [UIBarButtonItem]()
let homeButton = UIBarButtonItem(image: homeImage, style: UIBarButtonItemStyle.Plain, target: self, action: #selector(NavigationController.toHome))
homeButton.title = "Home"
let gameButton = UIBarButtonItem(image: gameImage, style: UIBarButtonItemStyle.Plain, target: self, action: #selector(NavigationController.toGame))
homeButton.title = "Game"
//Place the bar items in toolBarItems array
toolBarItems.append(homeButton)
toolBarItems.append(gameButton)
//self.toolbar.items = toolBarItems
self.toolbar.setItems(toolBarItems, animated: true)
}//End viewDidLoad
func toHome() {
let homeVC = HomeViewController(nibName: "HomeViewController", bundle: nil)
self.pushViewController(homeVC, animated: true)
}
func toGame() {
let gameVC = GameViewController(nibName: "GameViewController", bundle: nil)
self.pushViewController(gameVC, animated: true)
}
}
Did you create a second .swift file for your dependent controller? You should move this code to the dependant controller file
self.navigationController?.toolbarHidden = false
let button1 = UIBarButtonItem(title: "home", style: .Plain, target: self, action: #selector(SecondViewController.home))
let myToolBar = [button1]
self.setToolbarItems(myToolBar, animated: true)
I am not sure but I think your buttons has size 0. So maybe you should add some constraints or view frame size. You can try debugging using the view hierarchy debugger.
Maybe you just have to replace this self.navigationController?.toolbarHidden = false
With this toolbarHidden = false
I'm confused by your code. Is the class you show us, the one Navigation Controller where all other ViewController depend on or is it itself one dependent ViewController that in this case appears to be a Navigation Controller? Or is it a Navigation Controller by mistake? (not very likely)
Why I ask? At one time you're referring to the parent navigation controller with self.navigationController?.toolbarHidden = false which is not this navigation controller itself. Then in the rest of the code, you refer to this controller itself.
Hope this leads to the right thinking.
I have a UIToolbar, but I have no idea how to positioning it..
I would add UIBarButtonItems to it, and positioning them. The toolbar showing up, but i can't change it size, and i can't position the buttons in it.
override func viewDidAppear(animated: Bool) {
self.navigationController?.setToolbarHidden(false, animated: true)
self.navigationController?.toolbar.frame = CGRectMake(50, 50, 50, 50)
self.navigationController?.toolbar.sizeToFit()
let plusImg = UIImage(named: "navbar_icon-02.png")?.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal)
let plusButton = UIBarButtonItem(image: plusImg, style: UIBarButtonItemStyle.Plain, target: self, action: "postLeft:")
let filterButton = UIBarButtonItem(title: "Feed filter", style: UIBarButtonItemStyle.Plain, target: nil, action: nil)
let leftButton = UIBarButtonItem(title: "Button 3 tst", style: UIBarButtonItemStyle.Plain, target: nil, action: nil)
var toolbarButtons = [filterButton]
toolbarButtons.append(plusButton)
toolbarButtons.append(leftButton)
self.toolbarItems = toolbarButtons
}
There are two possible problems you might be having (I can't quite tell, from the way you've asked the question).
One problem might be that you are not in a navigation interface - you simply have a "loose" toolbar. Thus, the toolbar referred to through self.navigationController? is not your toolbar, and setting self.toolbarItems has no effect - those things are only for when you are in a navigation interface and the toolbar in question is the navigation controller's toolbar.
The other problem might be that you are in a navigation interface, in which case the toolbar position is not up to you - it's up to the navigation controller, which will always place it at the bottom of the screen.
So, either you need to be in a navigation interface so that the toolbar is the navigation controller's toolbar (and then your code will work, except for the positioning part), or else you can use a "loose" tolbar, in which case you need your code to refer to your toolbar, in which case you are free to position it, and you can give it items by setting its items.