while click on the button for the first time, the title of the button will get changed from "Add to Cart" to "Go to Cart". And from the next click the button will navigate to the next screen (cart page) [just like flipkart].
here is my piece of code:
#IBAction func addToCartbtnTapped(_ sender: Any) {
if let info = detailInfo {
let cartData = CartStruct(cartItems: info, cartQuantity: 1)
self.saveCart(data: cartData)
showAlert()
(sender as AnyObject).setTitle("Go to Cart", for: .normal)
let cart = self.storyboard?.instantiateViewController(withIdentifier: "CartViewController") as? CartViewController
self.navigationController?.pushViewController(cart!, animated: true)
}
}
I'm able to change the title of the button. But whenever I click on the button for nth number of time also, the product is getting added to the cart, screen is not navigating.
How to solve this issue?
Update..
override func viewDidLoad() {
super.viewDidLoad()
UserDefaults.standard.string(forKey: "btn")
}
#IBAction func addToCartbtnTapped(_ sender: Any) {
if !Clicked {
if let info = detailInfo {
let cartData = CartStruct(cartItems: info, cartQuantity: 1)
self.saveCart(data: cartData)
showAlert()
addingTOCart.setTitle("Go to Cart", for: .normal)
UserDefaults.standard.set("Go to Cart", forKey: "btn")
print("Clicked")
Clicked = true
return
}
}
if Clicked {
print("Perform Action")
let cart = self.storyboard?.instantiateViewController(withIdentifier: "CartViewController") as? CartViewController
self.navigationController?.pushViewController(cart!, animated: true)
}
}
This is how I am trying to store the "Go to Cart" state. But not working.. please suggest!
Add this code to check cart is already added or not, If added change title according in your detail controller:
override func viewWillAppear(_ animated: Bool) {
if let info = detailInfo {
let buttonTItle = (self.checkCartData(cartInfo: info) ? "Go to Cart" : "Add to Cart")
addToCartButton.setTitle(buttonTItle, for: .normal)
}
}
Next, Check before adding to cart. If already added, will navigate to cart page else add new cart item(changing button title too).
#IBAction func addToCartbtnTapped(_ sender: Any) {
if let info = detailInfo {
if checkCartData(cartInfo: info) {
let cart = self.storyboard?.instantiateViewController(withIdentifier: "CartViewController") as? CartViewController
self.navigationController?.pushViewController(cart!, animated: true)
} else {
let cartData = CartStruct(cartItems: info, cartQuantity: 1)
self.saveCart(data: cartData)
showAlert()
(sender as AnyObject).setTitle("Go to Cart", for: .normal)
}
}
}
Check Cart data here:
func checkCartData(cartInfo: jsonstruct) -> Bool {
guard let cart = self.getCartData() else { return false }
return (cart.contains(where: { $0.cartItems.name == cartInfo.name }) ? true : false )
}
Get all Cart Data with this method:
func getCartData() -> [CartStruct]? {
let defaults = UserDefaults.standard
var tempCart: [CartStruct]?
if let cdata = defaults.data(forKey: "cartt") {
tempCart = try! PropertyListDecoder().decode([CartStruct].self, from: cdata)
}
return tempCart
}
You can apply check on your button title for performing two different actions. Also you are showing alert and pushing View Controller at the same time which might be the reason for screen not navigating.
#IBAction func addToCartbtnTapped(_ sender: UIButton) {
if let info = detailInfo {
switch sender.currentTitle! {
case "Add to Cart":
let cartData = CartStruct(cartItems: info, cartQuantity: 1)
self.saveCart(data: cartData)
showAlert()
(sender as AnyObject).setTitle("Go to Cart", for: .normal)
case "Go to Cart":
let cartData = CartStruct(cartItems: info, cartQuantity: 1)
self.saveCart(data: cartData)
showAlert()
(sender as AnyObject).setTitle("Go to Cart", for: .normal)
default:
print("Default Case")
}
}
}
import UIKit
class ViewController: UIViewController {
#IBOutlet weak var btn: UIButton!
var Clicked:Bool = false
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
#IBAction func btnClick(_ sender: Any) {
if !Clicked {
btn.setTitle("Click", for: .normal)
print("Clicked")
Clicked = true
return
}
if Clicked {
print("Perform Action")
}
}
}
Related
Can someone help me execute functions from one VC in another VC.
The function from the first VC needs to be executed once I press a button in the second VC.
Im trying with "viewcontroller().function()" function but it's not working properly, printing and basic stuff works but when it comes to stuff like drawing direction it's not working.
The function that draws directions is:
func directionToPin() {
guard let currentPlacemark = currentPlacemark else {
print("Error, the current Placemark is: \(self.currentPlacemark)")
return
}
let directionRequest = MKDirections.Request()
let destinationPlacemark = MKPlacemark(placemark: currentPlacemark)
directionRequest.source = MKMapItem.forCurrentLocation()
directionRequest.destination = MKMapItem(placemark: destinationPlacemark)
directionRequest.transportType = .walking
//calculate route
let directions = MKDirections(request: directionRequest)
directions.calculate{ (directionsResponse, error) in
guard let directionsResponse = directionsResponse else {
if let error = error {
print("error getting directions: \(error.localizedDescription)")
}
return
}
let route = directionsResponse.routes[0]
if self.drawedDriection == false {
self.drawedDriection = true
if self.didSelectAnnotation == true {
self.mapView.addOverlay(route.polyline, level: .aboveRoads)self.navigationBarController.directionButtonOutlet.setImage(UIImage(named: "navigationBarDirectionButtonRed")?.withRenderingMode(.alwaysOriginal), for: .normal)
self.mapView.setRegion(MKCoordinateRegion(routeRect), animated: true)
}
} else {
self.drawedDriection = false
self.mapView.removeOverlays(self.mapView.overlays)
if self.didSelectAnnotation == true {
self.navigationBarController.directionButtonOutlet.setImage(UIImage(named: "navigationBarDirectionButtonBlue")?.withRenderingMode(.alwaysOriginal), for: .normal)
} else {
self.navigationBarController.directionButtonOutlet.setImage(UIImage(named: "navigationBarDirectionButtonGray")?.withRenderingMode(.alwaysOriginal), for: .normal)
}
}
}
}
I'm calling the function in the second VC once I press a button:
#IBAction func directionButton(_ sender: Any) {
MapViewController().directionToPin()
}
When I run the app and press the button the currentPlacemark is nil, if I run the same function via a button in my first VC (the VC with the directionToPin function inside)
here is my repo if you need it: https://github.com/octavi42/xCodeMapsApp
Thanks!
I think that you need to use Protocols and Delegates to achieve what you desire.
#IBAction func directionButton(_ sender: Any) {
MapViewController().directionToPin()
}
In the above code snippet, you are instantiating a new instance of MapViewController which upon initialization resets currentPlacemark and hence you've encountered nil.
My suggestion is to create a new protocol to communicate from MapViewController to CardViewController just like this
Add these in MapViewController.swift
protocol MapNavigationDelegate: AnyObject {
func didTapDirectionButton()
}
class MapViewController: UIViewController {
// .... Some code ....
override func viewDidLoad() {
// . .... Some more code .......
navigationBarController.mapNavigationDelegate = self
}
}
extension MapViewController: MapNavigationDelegate {
func didTapDirectionButton() {
self.directionToPin()
}
}
Add these in CardViewController.swift
class CardViewController: UIView {
// .... Some Code ....
weak var mapNavigationDelegate: MapNavigationDelegate!
#IBAction func directionButton(_ sender: Any) {
self.mapNavigationDelegate.didTapDirectionButton()
}
}
These both button shows same ViewController.
ViewController1.swift
#objc func btnEdit()
{
print("Edit")
let editDeptt = self.storyboard?.instantiateViewController(withIdentifier: "Add Department") as! AddDepartmentVC
self.navigationController?.pushViewController(editDeptt, animated: true)
}
#IBAction func btnNewDeptt(_ sender: Any)
{
let addDepttVC = self.storyboard?.instantiateViewController(withIdentifier: "Add Department") as! AddDepartmentVC
self.navigationController?.pushViewController(addDepttVC, animated: true)
}
ViewController2.swift
override func viewDidLoad() {
super.viewDidLoad()
//How to identify i come from which button
}
Add a property to your AddApartmentVC called action and set it before you push the view controller.
First create an enum:
enum Action {
case edit, newDept, unknown
}
Then define this property in your AddApartmentVC:
var action = Action.unknown
Then in your buttons' actions, set the property to the desired value:
editDeptt.action = .edit
or
addDepttVC.action = .newDept
Finally, in viewDidLoad(), check the value:
override func viewDidLoad() {
super.viewDidLoad()
switch(action) {
case .edit:
// do something for edit
case .newDept
// create a new Dept
case .unknown
print("what am I doing here?")
}
}
Add an instance variable name identify in your AddDepartmentVC and pass set the value of the same from your current VC like this
let editDeptt = self.storyboard?.instantiateViewController(withIdentifier: "Add Department") as! AddDepartmentVC
editDeptt.identify = "button1"
Then you can push it and check the variable in AddDepartmentVC
In ViewController2.swift, declare one variable like this
class ViewController2: UIViewController{
let var originTag: Int = 0
}
override func viewDidLoad() {
super.viewDidLoad()
if originTag == 0
{
// come from button 1 - btnEdit
}
else
{
// come from button 2 - btnNewDeptt
}
}
In ViewController 1, set originTag like this.
#objc func btnEdit()
{
print("Edit")
let editDeptt = self.storyboard?.instantiateViewController(withIdentifier: "Add Department") as! AddDepartmentVC
editDeptt.originTag = 0
self.navigationController?.pushViewController(editDeptt, animated: true)
}
#IBAction func btnNewDeptt(_ sender: Any)
{
let addDepttVC = self.storyboard?.instantiateViewController(withIdentifier: "Add Department") as! AddDepartmentVC
addDepttVC.originTag = 1
self.navigationController?.pushViewController(addDepttVC, animated: true)
}
Simply assign a tag for button -
Button1.tag=1
Button2.tag=2
Then check your button -
func onClickButton(sender: UIButton){
switch(sender.tag){
case 101 :
print("I am from button 1")
default :
print("I am from button 2")
}
}
use following it's perfectly working for you.
Take one public variable above class like below in Viewcontroller1.Swift
public var btnComingFrom = "first"
#objc func btnEdit()
{
btnComingFrom = "first"
print("Edit")
let editDeptt =
self.storyboard?.instantiateViewController(withIdentifier: "Add Department")
as! AddDepartmentVC
self.navigationController?.pushViewController(editDeptt, animated: true)
}
#IBAction func btnNewDeptt(_ sender: Any)
{
btnComingFrom = "second"
let addDepttVC = self.storyboard?.instantiateViewController(withIdentifier: "Add Department") as! AddDepartmentVC
self.navigationController?.pushViewController(addDepttVC, animated: true)
}
ViewController2.swift
override func viewDidLoad()
{
super.viewDidLoad()
if btnComingFrom == "first"
{
print("you are coming from first button")
}
if btnComingFrom == "second"
{
print("you are coming from second button")
}
}
view controller had two check boxes buttons
1.chekcIn
2.checkOut
am saving the checkIN [ checkbox button] status in user defaults, working fine but when am using that userdefaults key in Nextviewcontroller its always showing true and not running into false block
this is the code
inHomeview controller
#IBAction func CheckInButtonClick(_ sender: UIButton) {
for senderdata in checkINOUT {
senderdata.setImage( UIImage(named:"uncheck1"), for: .normal)
print("uncheck is called")
}
sender.setImage(UIImage(named:"check1"), for: .normal)
prefs.set(true, forKey: "check")
prefs.synchronize()
}
nextviewcontroller
override func viewDidLoad() {
super.viewDidLoad()
{
let prefs:UserDefaults = UserDefaults.standard
if prefs.bool(forKey: "check") ==true
{
print("select")
} else {
print("unselect")
}
}
check box select its execute main block if unselect execute else block
how to over come this problem where I did mistake
You´re not setting your userDefault value to false. You´re only setting it to true, that´s why it´s always true. And btw no need to use synchronize() Change your code to the following instead:
HomeViewController:
#IBAction func CheckInButtonClick(_ sender: UIButton) {
for senderdata in checkINOUT {
senderdata.setImage( UIImage(named:"uncheck1"), for: .normal)
print("uncheck is called")
}
sender.setImage(UIImage(named:"check1"), for: .normal)
UserDefaults.standard.set(true, forKey: "check")
}
NextViewController:
override func viewDidLoad() {
super.viewDidLoad()
if UserDefaults.standard.bool(forKey: "check") {
print("select")
} else {
print("unselect") {
}
}
So do check where you want to set your check value to false and use it.
Update:
Just do this check:
if UserDefaults.standard.set(true, forKey: "check") {
// Show data
} else {
// segue to another viewController
}
When you set "check" value as true once, it will always true, until you set "check" value to false.
I think you should add some code to set "check" to false, when user not select the checkbox.
I have a TableView where I display all my data and each cell might have 1-2 buttons. I read many topics and understand how to add target for each button through my ViewController. Since these buttons will be forwarded to the same VC and display images, I have the following code. In my TableViewCell subclass I have 2 buttons
class CODetailsTicketCell: UITableViewCel {
var onButtonTapped: (() -> Void)? = nil
#IBAction func firstBtnTapped(_ sender: UIButton) {
if let onButtonTapped = self.onButtonTapped {
onButtonTapped()
}
print("First button was pressed")
}
#IBAction func secondBtnTapped(_ sender: UIButton) {
if let onButtonTapped = self.onButtonTapped {
onButtonTapped()
}
print("Second button was pressed")
}
}
In my ViewController in cellForRowAt indexPath I have the following code
let message = messages[indexPath.row]
if let cell = tableView.dequeueReusableCell(withIdentifier: "COTicketsCell", for: indexPath) as? CODetailsTicketCell {
cell.configureCell(openTickets: message)
cell.onButtonTapped = {
self.performSegue(withIdentifier: "toImageVC", sender: message)
}
return cell
In order to pass the data through segue I use the following code in prepareForSegue
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "toImageVC" {
let navigationController = segue.destination as? UINavigationController
if let targetController = navigationController?.topViewController as? ImageVC {
if let data = sender as? OpenTicketsData {
targetController.loadImageURL = URL(string: data.firstImageUrl)
}
}
}
}
Everything is working FINE but I can't check for button tag in prepareForSegue. Basically, currently both buttons send the same data
targetController.loadImageURL = URL(string: data.firstImageUrl)
How can I pass data based on the button pressed? I tried to do something like this but seems it's wrong and not working.
let button = sender as? UIButton
if let data = sender as? OpenTicketsData {
if button?.tag == 1 {
targetController.loadImageURL = URL(string: data.firstImageUrl)
} else if button?.tag == 2 {
targetController.loadImageURL = URL(string: data.secondImageUrl)
}
}
You can either separate it into 2 different events or
class CODetailsTicketCell: UITableViewCell {
var onButtonTapped: ((_ sender: UIButton) -> Void)? = nil
#IBAction func firstBtnTapped(_ sender: UIButton) {
if let onButtonTapped = self.onButtonTapped {
onButtonTapped?(sender)
}
print("First button was pressed")
}
#IBAction func secondBtnTapped(_ sender: UIButton) {
if let onButtonTapped = self.onButtonTapped {
onButtonTapped(sender)
}
print("Second button was pressed")
}
}
In your assignment of the onButtonTapped, remember to add [weak self] if you ever use self to avoid the retain cycle.
cell.onButtonTapped = { [weak self] sender in
if sender.tag == 1 {
// Do something
} else {
// Do other thing
}
}
The following code was working partially. It display the question step and form. User was able to enter data, but when user click done nothing get save to care store and the display is not updated. Any idea?
class SymptomsVC1: UIViewController{
fileprivate let carePlanStoreManager = CarePlanStoreManager1.sharedCarePlanStoreManager
fileprivate let carePlanData: CarePlanData
fileprivate var symptomTrackerViewController: OCKSymptomTrackerViewController? = nil
required init?(coder aDecoder: NSCoder) {
carePlanData = CarePlanData(carePlanStore: carePlanStoreManager.store)
super.init(coder: aDecoder)
}
override func viewDidLoad() {
super.viewDidLoad()
setViewControllerTitle(self, title: "Symptoms Card")
//creatMenuObject(self)
let symptomTracker = OCKSymptomTrackerViewController.init(carePlanStore: carePlanStoreManager.store)
symptomTracker.progressRingTintColor = UIColor.magenta
symptomTracker.delegate = self
symptomTracker.showEdgeIndicators = true
// Setup the controller's title
symptomTracker.title = NSLocalizedString("Symptoms Card", comment: "")
//change left navigation "Back" button to menu button
var backImage:UIImage = UIImage(named: "menu")!
backImage = backImage.withRenderingMode(UIImageRenderingMode.alwaysOriginal)
let fakeBackButton = UIBarButtonItem(image: backImage, style: UIBarButtonItemStyle.bordered, target: symptomTracker.revealViewController(), action: #selector(SWRevealViewController.revealToggle(_:)))
symptomTracker.navigationItem.leftBarButtonItem = fakeBackButton;
self.navigationController?.pushViewController(symptomTracker, animated: true)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
extension SymptomsVC1: OCKSymptomTrackerViewControllerDelegate {
func symptomTrackerViewController(_ viewController: OCKSymptomTrackerViewController, didSelectRowWithAssessmentEvent assessmentEvent: OCKCarePlanEvent) {
if viewController.progressRingTintColor == UIColor.magenta {
guard let userInfo = assessmentEvent.activity.userInfo,
let task: ORKTask = userInfo["ORKTask"] as? ORKTask else { return }
let taskViewController = ORKTaskViewController(task: task, taskRun: nil)
taskViewController.delegate = self
present(taskViewController, animated: true, completion: nil)
}
}
}
extension SymptomsVC1: ORKTaskViewControllerDelegate {
func taskViewController(_ taskViewController: ORKTaskViewController, didFinishWith
reason: ORKTaskViewControllerFinishReason, error: Error?) {
defer {
dismiss(animated: true, completion: nil)
}
print("task view controller clicked")
guard reason == .completed else { return }
guard let symptomTrackerViewController = symptomTrackerViewController,
let event = symptomTrackerViewController.lastSelectedAssessmentEvent else { return }
let carePlanResult = carePlanStoreManager.buildCarePlanResultFrom(taskResult: taskViewController.result)
print("care plan result")
print(carePlanResult)
carePlanStoreManager.store.update(event, with: carePlanResult, state: .completed) {
success, _, error in
if !success {
print(error?.localizedDescription)
}
}
}
}
I found the fix by adding one line of code in the following function :
override func viewDidLoad() {
super.viewDidLoad()
setViewControllerTitle(self, title: "Symptoms Card")
//creatMenuObject(self)
let symptomTracker = OCKSymptomTrackerViewController.init(carePlanStore: carePlanStoreManager.store)
symptomTracker.progressRingTintColor = UIColor.magenta
symptomTracker.delegate = self
symptomTracker.showEdgeIndicators = true
// Setup the controller's title
symptomTracker.title = NSLocalizedString("Symptoms Card", comment: "")
//*** add the following line, now the result show up in carestore ***
symptomTrackerViewController = symptomTracker
//change left navigation "Back" button to menu button
var backImage:UIImage = UIImage(named: "menu")!
backImage = backImage.withRenderingMode(UIImageRenderingMode.alwaysOriginal)
let fakeBackButton = UIBarButtonItem(image: backImage, style: UIBarButtonItemStyle.bordered, target: symptomTracker.revealViewController(), action: #selector(SWRevealViewController.revealToggle(_:)))
symptomTracker.navigationItem.leftBarButtonItem = fakeBackButton;
self.navigationController?.pushViewController(symptomTracker, animated: true)
}