I want to add a Camera option on my left bar item inside .PhotoLibrary My codes as shown below, and they don't work.
let picker = UIImagePickerController()
let camera = UIBarButtonItem(barButtonSystemItem: .Camera, target: self, action: Selector("btnOpenCamera"))
picker.navigationItem.leftBarButtonItem = camera
picker.allowsEditing = true
picker.sourceType = .PhotoLibrary
picker.delegate = self
presentViewController(picker, animated: true, completion: nil)
You cannot do this the way you are doing because there is no UINavigationController to UIImagePickerController. In order to do this you must add UIInavigationControllerDlegate method in your class.
Add this method in your viewController
func navigationController(navigationController: UINavigationController, willShowViewController viewController: UIViewController, animated: Bool) {
print("m in")
viewController.navigationItem.title = "Home"
let camera = UIBarButtonItem(title: "camera", style: .Plain, target:self, action: "btnOpenCamera")
viewController.navigationItem.leftBarButtonItem = camera
The output is like this:
Referred to this post, and interpret from objective C to Swift.
I found a solution to my question. This method will do whatever customisation I need inside a loaded view controller.
func navigationController(navigationController: UINavigationController, willShowViewController viewController: UIViewController, animated: Bool) {
let camera = UIBarButtonItem(barButtonSystemItem: .Camera, target: self, action: Selector("btnOpenCamera"))
viewController.navigationItem.leftBarButtonItem = camera
}
Related
I have created a navigation controller. I added a plus button to the top right of the navigation controller which opens up a new view controller. However, I want the navigation bar to show up on the new screen as well. But it's not showing. What am I doing wrong, or what am I missing? Here is my code:
ViewController.swift
import UIKit
class ViewController: UIViewController {
#IBOutlet weak var toDoListTextView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
//Setting the Title for the nav bar
title = "To Do List"
configureNavigationItems()
}
private func configureNavigationItems(){
/* Adding a button on the top right of the screen
* in the navigation bar/controller.
*/
navigationItem.rightBarButtonItem = UIBarButtonItem(
barButtonSystemItem: .add,
target: self,
action: #selector(didTapPlus)
)
}
#objc func didTapPlus(){
let vc = storyboard?.instantiateViewController(identifier: "makeTask") as! makeTaskViewController
vc.modalPresentationStyle = .fullScreen
vc.title = "Create a Task"
vc.view.backgroundColor = .black
vc.navigationItem.leftBarButtonItem = UIBarButtonItem(
title: "Back",
style: .done,
target: self,
action: nil)
present(vc, animated: true)
}
}
Storyboard
Click Here To See Picture
Demo of App
enter image description here
Each modally-presented view controller gets a brand-new view hierarchy. This means that if you want your MakeTaskViewController to have a navigation bar, you'll need to manually add a navigation controller.
class ViewController: UIViewController {
// ... your code ...
#objc func didTapPlus() {
let vc = storyboard?.instantiateViewController(identifier: "makeTask") as! MakeTaskViewController
vc.modalPresentationStyle = .fullScreen
vc.title = "Create a Task"
vc.view.backgroundColor = .black
vc.navigationItem.leftBarButtonItem = UIBarButtonItem(
title: "Back",
style: .done,
target: vc, /// make sure to set `target` as the new view controller
action: #selector(vc.dismissMe))
/// wrap the new view controller in a navigation controller (this adds the top bar)
let navigationController = UINavigationController(rootViewController: vc)
/// so you can actually see the `Create a Task` text,
navigationController.navigationBar.barStyle = .black
present(navigationController, animated: true)
}
}
/// side note: `MakeTaskViewController` and other classes should be Capitalized
class MakeTaskViewController: UIViewController {
#objc func dismissMe() {
self.dismiss(animated: true)
}
}
Result:
Try this!
import UIKit
class ViewController: UIViewController {
#IBOutlet weak var toDoListTextView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
//Setting the Title for the nav bar
title = "To Do List"
configureNavigationItems()
}
private func configureNavigationItems(){
navigationItem.rightBarButtonItem = UIBarButtonItem(
barButtonSystemItem: .add,
target: self,
action: #selector(didTapPlus)
)
}
#objc func didTapPlus(){
let vc = storyboard?.instantiateViewController(identifier: "makeTask") as! makeTaskViewController
vc.modalPresentationStyle = .fullScreen
vc.title = "Create a Task"
vc.view.backgroundColor = .black
vc.navigationItem.leftBarButtonItem = UIBarButtonItem(
title: "Back",
style: .done,
target: self,
action: nil)
navigationController?.pushViewController(vc, animated: true)
//present(vc, animated: true)
}
}
😊
I'm relatively new at iOS. I'm struggling, for a while now with this issue. I don't know how to set the logic for presenting popUp when user taps on right bar button item. Basically, it should look like this:PopUp I searched through Google, but I didn't have any luck. I would appreciate if someone would help me with some code.
//My VC
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
let rightBarButtonItem = UIBarButtonItem(title: "Share", style: .plain, target: self, action: #selector(clickShare))
rightBarButtonItem.tintColor = UIColor.black
navigationItem.rightBarButtonItem = rightBarButtonItem
// navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Share", style: UIBarButtonItemStyle.plain, target: self, action: #selector(clickShare))
navigationItem.leftBarButtonItem = UIBarButtonItem(image: UIImage(named: "backArrow"), style: UIBarButtonItemStyle.plain, target: self, action: #selector(goBack))
UIBarButtonItem.appearance().setTitleTextAttributes([NSAttributedStringKey.font : UIFont(name: "OpenSans", size: 14)! ], for: .normal)
}
//MARK: - Actions
#objc func goBack() {
navigationController?.popViewController(animated: true)
}
#objc func clickShare() {
//this is where the logic should go
}
//This is my storyboard:
Storyboard
Add following action,
#IBAction func yourButtonClickAction(sender: UIBarButtonItem) {
let storyboard : UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyboard.instantiateViewControllerWithIdentifier("YourViewController") as! UIViewController
vc.modalPresentationStyle = UIModalPresentationStyle.Popover
let popover: UIPopoverPresentationController = vc.popoverPresentationController!
popover.barButtonItem = sender
popover.delegate = self
presentViewController(vc, animated: true, completion:nil)
}
Add this action to you barButtonItem.
'YourViewController' = controller consisting of Public, followers options.
I am having trouble creating a UINavigationController toolbar programmatically. I have previously used storyboards to do this successfully but would like to try doing it all in code.
I have created the UIBarButtonItems programmatically, but the actual functions or actions they are supposed to perform when pressed are not working.
To clarify, I am NOT attempting to add UIBarButtonItems to the top bar. I've seen dozens of questions all asking the same thing. I am referring to the toolbar at the bottom that comes with the UINavigationController. This means no "rightBarButtonItem" or "leftBarButtonItem"
Here is the code:
class ProgOneViewController: UIViewController {
var chatRoomsButton: UIBarButtonItem = {
var button = UIBarButtonItem(title: "Chats", style: .plain, target: self, action: #selector(segueToChatRoomController(_:)))
return button
}()
var exploreButton: UIBarButtonItem = {
var button = UIBarButtonItem(title: "Explore", style: .plain, target: self, action: #selector(segueToExploreController(_:)))
return button
}()
var profileButton: UIBarButtonItem = {
var button = UIBarButtonItem(title: "Profile", style: .plain, target: self, action: #selector(segueToProfileController(_:)))
return button
}()
// Flexible spaces that are added in between each button.
var flexibleSpace1: UIBarButtonItem = {
var flexibleSpace = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: self, action: nil)
return flexibleSpace
}()
var flexibleSpace2: UIBarButtonItem = {
var flexibleSpace = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: self, action: nil)
return flexibleSpace
}()
var flexibleSpace3: UIBarButtonItem = {
var flexibleSpace = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: self, action: nil)
return flexibleSpace
}()
var flexibleSpace4: UIBarButtonItem = {
var flexibleSpace = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: self, action: nil)
return flexibleSpace
}()
// These are the functions that are not being called for some mysterious reason.
func segueToChatRoomController(_ sender: Any) {
print("segueing to chat rooms controller")
let chatRoomsController = ChatRoomsViewController()
let navController = UINavigationController(rootViewController: chatRoomsController)
self.present(navController, animated: false, completion: nil)
}
func segueToExploreController(_ sender: Any) {
print("segueing to explore controller")
let exploreController = ExploreCollectionViewController()
let navController = UINavigationController(rootViewController: exploreController)
self.present(navController, animated: false, completion: nil)
}
func segueToProfileController(_ sender: Any) {
print("segueing to profile controller")
let profileController = ProfileTableViewController()
let navController = UINavigationController(rootViewController: profileController)
self.present(navController, animated: false, completion: nil)
}
func setUpToolbar() {
print("setting up toolbar")
self.navigationController?.setToolbarHidden(false, animated: false)
self.navigationController?.toolbar.isUserInteractionEnabled = true
let toolBarItems = [flexibleSpace1, chatRoomsButton, flexibleSpace2, exploreButton, flexibleSpace3, profileButton, flexibleSpace4]
self.setToolbarItems(toolBarItems, animated: true)
// For some reason, these two methods leave the toolbar empty.
//self.navigationController?.setToolbarItems(toolBarItems, animated: true)
//self.navigationController?.toolbar.items = toolBarItems
}
override func viewDidLoad() {
super.viewDidLoad()
self.view.backgroundColor = UIColor.white
setUpToolbar()
}
}
EDIT*
Here is the code used to instantiate the ProgOneViewController inside a UINavigationController
func pushToTestProgrammaticallyCreatedViews() {
let progOneViewController = ProgOneViewController()
let navController = UINavigationController(rootViewController: progOneViewController)
//navController.isToolbarHidden = false
//progOneViewController.setUpToolbar()
self.present(navController, animated: false, completion: nil)
}
I called this function upon clicking a button in my storyboard-created view controller. The function signature was long in order to specify which viewControllers were tests (created programmatically) :)
first of all you have to make sure that your ProgOneViewController is really included in a UINavigationController. if that is the case the toolbar as well as the barbuttonitems are shown (tried your code in my project).
except of that you have to change all of your barbuttonitem declarations to lazy var so that the references to self within the declarations point to the viewcontroller and target-action works.
feel free to ask if there are any questions :)
As per title, my Camera system icon comes in and goes off almost immediately. However, when I try to navigate to another screen, it stays there permanently.
Video of how it disappears.
https://vid.me/ggk5
My codes are as below. I've set my view controller as a delegate of UINavigationControllerDelegate. So when the imagepickercontroller is shown, I want to add a camera icon as per the video. However it comes in and goes off.
public func navigationController(_ navigationController: UINavigationController, didShow viewController: UIViewController, animated: Bool){
let camera = UIBarButtonItem(barButtonSystemItem: .camera, target: self, action: #selector(CameraTabTVC.btnOpenCamera))
viewController.navigationItem.leftBarButtonItem = camera
}
func btnOpenCamera(){
self.dismiss(animated: false, completion: nil)
let picker = UIImagePickerController()
picker.delegate = self
picker.sourceType = .camera
picker.allowsEditing = true
present(picker, animated: false, completion: nil)
}
If you are familiar with UIImagePickerController screen for .PhotoLibrary, on the right hand side there is a Cancel button. On the left hand side, I want to add a Camera icon that can be found in XCode library.
My code doesn't work.
let picker = UIImagePickerController()
picker.delegate = self
picker.sourceType = .PhotoLibrary
picker.allowsEditing = true
let camera = UIBarButtonItem(barButtonSystemItem: .Camera, target: picker, action: Selector("btnOpenCamera"))
picker.navigationItem.leftBarButtonItem = camera
presentViewController(picker, animated: true, completion: nil)
Referred to this post, and interpret from objective C to Swift.
I found a solution to my question. This method will do whatever customisation I need inside a loaded view controller.
func navigationController(navigationController: UINavigationController, willShowViewController viewController: UIViewController, animated: Bool) {
let camera = UIBarButtonItem(barButtonSystemItem: .Camera, target: self, action: Selector("btnOpenCamera"))
viewController.navigationItem.leftBarButtonItem = camera
}
It may reset navigationItem to other somewhere else during code execution (for example in viewDidLayoutSubviews).
You can try to inherit from UIImagePickerController and reimplement
func viewWillAppear(animated:Bool) {
super.viewWillAppear(animated)
let camera = UIBarButtonItem(barButtonSystemItem: .Camera, target: , action:self Selector("btnOpenCamera"))//you can handle this with delegate if you want
self.navigationItem.leftBarButtonItem = camera
}
Than just use your inherited class instead of standard UIImagePickerController. Hope it helped.