I was trying to implement the bar button with SWreveal ViewController and instead of implementing the slider button "Open" For all views.I made one base class BaseController and from that I inherited the viewcontroller for which i wish to have slider but my below code works for the pan gesture but code 2 doesn't not for the button.Can Someone tell me why?
Code1:(Working Code)
self.navigationItem.leftBarButtonItem = UIBarButtonItem.init(title: "Sider", style: .done, target: self, action: nil ) self.navigationItem.leftBarButtonItem?.target = self.revealViewController() self.navigationItem.leftBarButtonItem?.action = Selector("revealToggle:")
Code2:(Not Working)
self.navigationItem.leftBarButtonItem = UIBarButtonItem.init(title: "Sider", style: .done, target: self, action: Selector("revealToggle:") )
Code1 works but Code2 doesn't work Can someone tell me why.
In your Code2 check Selector("revealToggle:") is not your class method so you have to select target: SWrevealViewController in code2
You can write code2 like below:
self.navigationItem.leftBarButtonItem = UIBarButtonItem.init(title: "Sider", style: .done, target: self.revealViewController(), action: Selector("revealToggle:") )
Related
I'm trying to remove the text "Back" from the navigation back button, leaving just the back chevron, but everything I'm trying is not working. For example if I add something like the following, obtained from previous answers to the same question, to viewDidLoad:
navigationItem.backBarButtonItem = UIBarButtonItem(title: "go away", style: .plain, target: nil, action: nil)
or
navigationController?.navigationBar.backBarButtonItem = UIBarButtonItem(title: "go away", style: .plain, target: nil, action: nil)
Then when the view appears it's still showing "< Back" in the navigation bar.
Here's what the views look like within captured within viewDidAppear.
Image:1
Try this code snippet hope it will help you
happy coding =)
override func viewDidLoad() {
DispatchQueue.main.async {
if let navBar = self.navigationController?.navigationBar {
navBar.backItem?.title = ""
}
}
}
You should create a left button and set the action to return to the rootViewController.
In viewDidLoad:
let leftButton = UIBarButtonItem(title: "<", style: .plain, target: self, action: #selector(back(_ :)))
self.navigationItem.leftBarButtonItem = leftButton
You are changing the wrong thing. You use this code here to change the title for the back button.
navigationItem.leftBarButtonItem = UIBarButtonItem(title: "Back", style: .done, target: self, action: #selector(handleBack))
By doing this you need to add a selector for the button as well. Cause if you click the back button nothing will happen. This is how you would do that.
#objc private func handleBack() {
navigationController?.popViewController(animated: true)
}
Hope this helps.
Alternatively, from Interface Builder, you can set previous UIViewController's Back Button on Navigation Item to " " (not empty string, space):
How it is possible to add an image and text on a UIBarButtonItem on a navigation controller just like on modern apps such as Photos, ebay etc (see Toolbar)
I know this is possible in Interface Builder if you add a toolbar manually to a view but this is not possible if using navigation controller.
If you have a UIViewController in a UINavigationController you can set the left and the right bar button of the view controller with
// System item
self.navigationItem.leftBarButtonItem = UIBarButtonItem(barButtonSystemItem: .action, target: self, action: #selector(action))
self.navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .action, target: self, action: #selector(action))
// Tittle
self.navigationItem.leftBarButtonItem = UIBarButtonItem(title: "Left Button", style: .plain, target: self, action: #selector(action))
self.navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Right Button", style: .plain, target: self, action: #selector(action))
// Image
self.navigationItem.leftBarButtonItem = UIBarButtonItem(image: image, style: .plain, target: self, action: #selector(action))
self.navigationItem.rightBarButtonItem = UIBarButtonItem(image: image, style: .plain, target: self, action: #selector(action))
// Custom view
self.navigationItem.leftBarButtonItem = UIBarButtonItem(customView: view)
self.navigationItem.rightBarButtonItem = UIBarButtonItem(customView: view)
This is as far as I got so far. This, however only displays a text right to the image:
//Create a UIButton with an image on the left, and text to the right
var buttonImage = #imageLiteral(resourceName: "Lab")
var button : UIButton = UIButton(type: UIButtonType.custom)
button.setImage(buttonImage, for: UIControlState.normal);
button.setTitle("Caption", for: UIControlState.normal);
I have added a navigation bar to the top of a view controller. I am trying to control whether a button is visible based a condition, but I am having trouble adding the button. So far I have,
var addButton: UIBarButtonItem = UIBarButtonItem(title: "test", style: .done, target: self, action: #selector(addTapped))
override func viewDidLoad() {
super.viewDidLoad()
let boool = true
if boool {
self.navigationItem.rightBarButtonItem = self.addButton
}
else {
self.navigationItem.rightBarButtonItem = nil
}
}
func addTapped(sender: AnyObject) {
print("hjxdbsdhjbv")
}
I believe it is not working properly because I have added a navigation bar into the VC, instead of using a navigation controller and working with the bar there. I was wondering if there was a way to work with this navigation bar.
It’s simple. Put this line of code to the viewDidLoad:
self.navigationItem.rightBarButtonItem = UIBarButtonItem(title: "test", style: .done, target: self, action: #selector(addTapped))
Updated for Swift 4 or later:
A custom function:
#objc func action(sender: UIBarButtonItem) {
// Function body goes here
}
(Custom) Right bar button item:
self.navigationItem.rightBarButtonItem = UIBarButtonItem.init(title: "some_text", style: .done, target: self, action: #selector(self.action(sender:)))
(Custom) Left bar button item:
self.navigationItem.leftBarButtonItem = UIBarButtonItem.init(title: "some_text", style: .done, target: self, action: #selector(self.action(sender:)))
Also you can add a system bar button items something like this: UIBarButtonItem.SystemItem Defines system-supplied images for bar button items: .add, .done, .cancel, .edit, .save, .compose, .reply, .organize and more.
(System) Right bar button item:
self.navigationItem.rightBarButtonItem = UIBarButtonItem.init(barButtonSystemItem: UIBarButtonItem.SystemItem.add, target: self, action: #selector(self.action(sender:)))
(System) Left bar button item:
self.navigationItem.leftBarButtonItem = UIBarButtonItem.init(barButtonSystemItem: UIBarButtonItem.SystemItem.add, target: self, action: #selector(self.action(sender:)))
let rightBarButtonItem = UIBarButtonItem.init(image: UIImage(named: "EditImage"), style: .done, target: self, action: #selector(ViewController.call_Method))
self.navigationItem.rightBarButtonItem = rightBarButtonItem
You say you added a UINavigationBar to your view controller via storyboard, but looking at the code you provided there is no outlet connection to your navigation bar in IB.
In order to access self.navigationItem your view controller must be embedded in a UINavigationController or be part of a hierarchy which is. Unless you have a need for a custom navigation bar on an individual view controller, I suggest removing that from Interface Builder, then making sure either the view controller in question is embedded in a UINavigationController or it is being pushed onto the navigation stack from another controller which is embedded in a navigation controller and then you should see your UIBarButtonItem.
Firstly, you need to connect you navigation bar to an IBOutlet so that you can refer to it in your code. After that, this code should work:
let navigationItem = UINavigationItem(title: "Title")
navigationItem.rightBarButtonItem = self.addButton
navigationItem.hidesBackButton = true
self.navigationBar.pushItem(navigationItem, animated: false)
Swift 4.2;
Add viewController
override func viewDidLoad() {
super.viewDidLoad()
self.addNavigationBarButton(imageName: "ic_back", direction:.left)
}
Add Class your API or Utility Class
public func addNavigationBarButton(imageName:String,direction:direction){
var image = UIImage(named: imageName)
image = image?.withRenderingMode(.alwaysOriginal)
switch direction {
case .left:
self.navigationItem.leftBarButtonItem = UIBarButtonItem(image: image, style:.plain, target: nil, action: #selector(goBack))
case .right:
self.navigationItem.rightBarButtonItem = UIBarButtonItem(image: image, style:.plain, target: nil, action: #selector(goBack))
}
}
#objc public func goBack() {
self.navigationController?.popViewController(animated: true)
}
public enum direction {
case right
case left
}
tested in Xcode 10.2, swift 5.0;
First, I have have embedded my ViewController in UINavigationController in IB.
Then in ViewDidLoad include these lines
self.title = "orange"
self.navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .add, target: self, action: #selector(changeLayout)).
Note - accessing title, or adding button through navigation controller did not work. For example : setting title - Self.navigationcontroller.navigationItem.title did not work ,
I have a UIViewController, and I embed it into a UINavigationController.
I want to show one item in the toolbar (and by toolbar, I mean this:
This is my code in viewDidLoad method
self.navigationController?.toolbarHidden = false
self.navigationController?.toolbar.items?.append(UIBarButtonItem(title: "Buy Potato", style: .Plain, target: self, action: #selector(ViewController.buyPotato)))
self.navigationController?.toolbarItems?.append(UIBarButtonItem(title: "Buy Potato", style: .Plain, target: self, action: #selector(ViewController.buyPotato)))
self.toolbarItems?.append(UIBarButtonItem(title: "Buy Potato", style: .Plain, target: self, action: #selector(ViewController.buyPotato)))
and I already have the method buyPotato
func buyPotato() {
}
as you see, I tried to do that using either the viewController or the navigationController, but it doesn't work.
All I can see is the toolbar at the bottom of my screen but without any button.
self.navigationController?.toolbarHidden = false
var items = [UIBarButtonItem]()
items.append(
UIBarButtonItem(barButtonSystemItem: .Plain, target: self, action: nil))
items.append(
UIBarButtonItem(barButtonSystemItem: .Add, target: self, action: "onClickedToolbeltButton:"))
self.setToolbarItems(barButtonItems, animated: true)
This has to work for you as per the answer written here.
Delete
self.setToolbarItems(barButtonItems, animated: true)
Add
self.toolbarItems = barButtonItems
I have a question to add a right button in navigation bar..
I have two views: View A and View B
I add a navigation bar to view A, after I used self.navigationController!.pushViewController to show view B.
That show a back button in the left of navigation bar of view B automatic, it is good. but now I want to add a button in the right of navigation bar of view B..
I have tried some answers, but it doesn't work...
I have tried answers likes :
1) https://www.hackingwithswift.com/example-code/uikit/how-to-add-a-bar-button-to-a-navigation-bar
2)http://blog.apoorvmote.com/add-multiple-bar-button-item-navigation-bar/?lang=fr
Could you help me, thank you !
The Swift version of Vahan Babayan's answer, as you seem to use this language, is:
let rightButtonItem = UIBarButtonItem.init(
title: "Title",
style: .Done,
target: self,
action: "rightButtonAction:"
)
self.navigationItem.rightBarButtonItem = rightButtonItem
The following method will be called on self:
func rightButtonAction(sender: UIBarButtonItem)
Note that all this can be set graphically using a Storyboard, by dragging a Bar Button Item to your Navigation Item and right-clicking to set a target-action.
A small update since Swift 3 and 4 are out: the compiler can now check selector names, preventing typos when setting up target-action programatically. So one should really use:
let rightButtonItem = UIBarButtonItem.init(
title: "Title",
style: .Done,
target: self,
action: #selector(rightButtonAction(sender:))
)
You can add the following code to your B controller's viewDidLoad method.
UIBarButtonItem *rightButtonItem = [[UIBarButtonItem alloc] initWithTitle:#"Title"
style:UIBarButtonItemStyleDone
target:self
action:#selector(rightButtonAction:)];
self.navigationItem.rightBarButtonItem = rightButtonItem;
- (void)viewDidLoad {
[super viewDidLoad];
UIBarButtonItem *rightBtn = [[UIBarButtonItem alloc]initWithTitle:#"Right Button" style:UIBarButtonItemStyleDone target:self action:#selector(rightBtnClick)];
self.navigationItem.rightBarButtonItem = rightBtn;
}
-(void)rightBtnClick{
// code for right Button
}
Add below code in viewDidLoad Method
UIBarButtonItem *flipButton = [[UIBarButtonItem alloc]
initWithTitle:#"Flip"
style:UIBarButtonItemStyleBordered
target:self
action:#selector(flipView:)];
self.navigationItem.rightBarButtonItem = flipButton;
This adds a button to the right hand side with the title Flip, which calls the method:
-(IBAction)flipView
Swift code to add a navigation bar button item:
Method 1 (When you wanna use bar button system item)
navigationItem.leftBarButtonItem = UIBarButtonItem(barButtonSystemItem: .add, target: self, action: #selector(addTapped))
Method 2 (When you wanna give your own title to button)
navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Add", style: .plain, target: self, action: #selector(addTapped))
From iOS 5 onwards, it allows you to add more than 1 button on either side of a navigation bar. Something like this:
let add = UIBarButtonItem(barButtonSystemItem: .add, target: self, action: #selector(addTapped))
let display = UIBarButtonItem(title: "Display", style: .plain, target: self, action: #selector(playTapped))
navigationItem.rightBarButtonItems = [add, display]
Try this code for Swift UI :
.navigationBarItems(
leading:
HStack {
Button("About") {
print("About tapped!")
}
Button("Call") {
print("Call tapped!")
}
},
trailing:
HStack {
Button("Settings") {
print("Settings tapped!")
}
Button("Contacts") {
print("Contacts tapped!")
}
}
)