I am working on a Mac OS X application with Swift.
This is my first time and I thought it would be the same as it is on iOS.
So I got this error (in the title) on this code:
import Cocoa
import AppKit
class LoginViewController: NSViewController {
#IBOutlet weak var emailTextField: NSTextField!
#IBOutlet weak var passwordTextField: NSSecureTextField!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
override func viewDidAppear() {
}
super.viewDidAppear()
if NSUserDefaults.standardUserDefaults().valueForKey("uid") != nil && CURRENT_USER!.authData != nil
{
self.logoutButton.hidden = false
}
}
func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
func loginAction(sender: AnyObject)
{
let email = self.emailTextField.text
let password = self.passwordTextField.text
...
}
}
What do I have to write instead of self?
Using self is correct. Try using the property stringValue instead of text.
Here is the code that worked for me:
#IBOutlet weak var emailTextField: NSTextField!
#IBAction func sendTapped(sender: AnyObject) {
let email = self.emailTextField.stringValue
print(email)
}
Related
class CustViewController: NSViewController {
#IBOutlet weak var tableView: NSTableView!
#IBOutlet weak var statusLabel: NSTextField!
fileprivate var selectedOptionFromMenu = ""
#objc var contacts:[Person] = []
#objc var backUpContacts:[Person] = []
#IBAction func printCustomers(_ sender: Any?) {
I would like to call the printCustomers function from another class (NSWindowController). How is this coded in the NSWindowController class?
I tried the following:
let printAction = CustViewController.printCustomers(<#T##self: CustViewController##CustViewController#> )
but don't know how to code argument in this and this may be not be the way to do this?
I used an observer to notify when to run the code in the ViewController
The following is the code I used to accomplish this:
In the main WindowController
public let printNotification = Notification.Name("printNotification")
#IBAction func cashToMePrinting(_ sender: Any?) {
switch activeWindow {
case activeView.customerView:
let printCustNC = NotificationCenter.default
printCustNC.post(name: printNotification, object: nil)
default:
print()
}
}
Added the #IBAction to the responder chain using toolbar print item
Then in the ViewController I added:
#objc func reactToNotification(_ sender: Notification) {
// Do what you need, including updating IBOutlets
printCustomers(Any?.self)
}
I have a problem, I want to create a small app in which data in a formula can be charged.
Currently the data from three ViewControllers and one PickerViewController will be given back to the first ViewController.
That works very well too.
Now I want that the data at the start not on "nil" set but have a certain value.
Thereafter, the data entered last should reappear when the app is restarted.
I would like to apologize for my english, it is not my preferred language ...
Here is a part of my code how I wrote it
Main ViewController:
import UIKit
class RecivingViewController: UIViewController, SendDataBack, SendDataBack2, SendDataBack3, SendDataBack4 {
#IBOutlet weak var recivingData: UILabel!
#IBOutlet weak var recivingData2: UILabel!
#IBOutlet weak var recivingData3: UILabel!
#IBOutlet weak var recivingData4: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
func userData(data: String) {
recivingData.text = data
}
func userData2(data: String) {
recivingData2.text = data
}
func userData3(data: String) {
recivingData3.text = data
}
func PickerData(data: String){
recivingData4.text = data
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "view1" {
let SendingVC: SendingViewController = segue.destination as! SendingViewController
SendingVC.delegate = self
}
if segue.identifier == "view2" {
let SendingVC2: Sending2ViewController = segue.destination as! Sending2ViewController
SendingVC2.delegate = self
}
if segue.identifier == "view3" {
let SendingVC3: Sending3ViewController = segue.destination as! Sending3ViewController
SendingVC3.delegate = self
}
if segue.identifier == "picker" {
let SendingVC4: PickerViewController = segue.destination as! PickerViewController
SendingVC4.delegate = self
}
}
}
one of the other ViewControllers:
import UIKit
protocol SendDataBack {
func userData(data: String)
}
class SendingViewController: UIViewController {
#IBOutlet weak var DataTxt: UITextField!
var delegate: SendDataBack? = nil
#IBAction func done(_ sender: Any) {
if delegate != nil {
if DataTxt.text != nil {
let data = DataTxt.text
delegate?.userData(data: data!)
dismiss(animated: true, completion: nil)
}
}
}
In order to see data after app is restarted you should use user defaults.
For saving data
UserDefaults.standard.set(newValue, forKey: "data")
For loading data in your view controller, if it's first load, when data is nil
UserDefaults.standard.string(forKey: "data")
I currently have my app linking to a certain URL upon opening the app, and this obviously can have a delay between opening it and the webView actually loading, so I want it to display an activity indicator whenever the webView is loading, I have the following code in my ViewController.swift:
class ViewController: UIViewController, UIWebViewDelegate {
#IBOutlet weak var webView: UIWebView!
#IBOutlet weak var activityIndicator: UIActivityIndicatorView!
override func viewDidLoad() {
super.viewDidLoad()
webView.delegate = self
let url = URL(string: "url to site")
webView.loadRequest(URLRequest(url: url!)
}
func webViewDidStartLoad(webView: UIWebView){
activityIndicator.startAnimating()
}
func webViewDidFinishLoad(webView: UIWebView){
activityIndicator.stopAnimating()
}
The activity indicator shows up from the beginning but it does not disappear once the webView loads and stays their forever.
The way you have your code organized is a bit confusing. It appears you are declaring your funcs inside the #IBAction function. If this is the case, this will not work.
Try this instead
class ViewController: UIViewController, UIWebviewDelegate {
override func viewDidLoad() {
...
webView.delegate = self
// You should add this to your Storyboard, above the webview instead of here in the code
activityIndicator.center = self.view.center
activityIndicator.hidesWhenStopped = true
activityIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyle.gray
// I forget the actual method name - look it up
view.insertSubview(activityIndicator, above: webView)
}
#IBAction func openButton(_ sender: Any) {
let url = URL(string: "websiteURL")
webView.loadRequest(URLRequest(url: url!))
}
func webViewDidStartLoad(webView: UIWebView){
activityIndicator.startAnimating()
}
func webViewDidFinishLoad(webView: UIWebView){
activityIndicator.stopAnimating()
}
// You'll also want to add the "didFail" method
}
The issue is a syntax issue, you have to add an underscore in the functions.
override func viewDidLoad() {
super.viewDidLoad()
webView.delegate = self
let url = URL(string: "your URL")
webView.loadRequest(URLRequest(url: url!))
}
func webView(_ webView: UIWebView, shouldStartLoadWith request: URLRequest, navigationType: UIWebViewNavigationType) -> Bool{
activityIndicator.startAnimating()
return true
}
func webViewDidStartLoad(_ webView: UIWebView){
activityIndicator.startAnimating()
}
func webViewDidFinishLoad(_ webView: UIWebView){
activityIndicator.stopAnimating()
}
func webView(_ webView: UIWebView, didFailLoadWithError error: Error){
activityIndicator.stopAnimating()
}
I am having an issue getting one simple variable from one class to another and it is beyond extremely frustrating :/...
Here is the deal I have two view controller classes named: ViewController.swift and ViewController2.swift
ViewController.swift is linked to a storyboard that has sort of an inventory bag that I have placed which is just an image. Then there is an #IBAction for when you click on the bag it opens up and the second storyboard pops into view. This is controlled by ViewController2.swift. All I am looking to do is simply pass the center of the bag image from ViewController to ViewController2 but I can't seem to get it to work any help would be greatly appreciated.
class ViewController: UIViewController {
#IBOutlet weak var InventoryBag: UIImageView!
var bagCenter:CGPoint = CGPoint(x: 0, y: 0)
override func viewDidLoad() {
super.viewDidLoad()
#IBAction func InventoryButtonTapped(sender: UIButton) {
self.InventoryBag.image = UIImage(named: "backpackimageopen")
bagCenter = self.InventoryBag.center
func transferViewControllerVariables() -> (CGPoint){
return bagCenter
}
When I print the bagCenter from this ViewController it works properly and gives me a correct value. So the bagCenter variable I would like to somehow pass over to ViewController2.swift.
Here is what I tried from ViewController2.swift but it never seems to work and always gives me a 0 rather than the actual value.
class ViewController2: UIViewController {
#IBOutlet weak var HideButton: UIButton!
#IBOutlet weak var InventoryCollection: UICollectionView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
//Load the center of the inventory bag to this view controller to align the hide button.
var bagCenter = ViewController().transferViewControllerVariables()
}
But when I do this it always results in a 0 and I don't get the actual coords of the bag that are showing up in ViewController1.
Create a following variable in ViewController2
var previousViewController: ViewController!
Add following line of code in your ViewController Class
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?){
if segue.destinationViewController .isKindOfClass(ViewController2){
let vc2 = segue.destinationViewController as! ViewController2
vc2.previousViewController = self
}
}
Now in viewDidLoad method of ViewController2 you can access bagCenter like below:
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
var bagCenter = previousViewController.transferViewControllerVariables()
}
Try this in view Controller
class ViewController: UIViewController {
#IBOutlet weak var InventoryBag: UIImageView!
var bagCenter:CGPoint = CGPoint(x: 0, y: 0)
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
#IBAction func InventoryButtonTapped(sender: AnyObject) {
self.InventoryBag.image = UIImage(named:"MAKEUP_SHARE.jpg")
bagCenter = self.InventoryBag.center
performSegueWithIdentifier("Go", sender: self)
}
// Give a segue identifier in storyboard
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "yoursegueidentifier" {
let dvc = segue.destinationViewController as? ViewController2
dvc!.bagCenter = bagCenter
}
}
}
and in view controller2
class ViewController2: UIViewController {
var bagCenter:CGPoint!
override func viewDidLoad() {
super.viewDidLoad()
print(bagCenter)
}
}
I am trying to call the entire menu with Month title from Mozharovsky/CVCalendar but I'm not sure what function will call this out?
This is the current code I am using:
import UIKit
import CVCalendar
class ViewController: UIViewController, CVCalendarViewDelegate, CVCalendarMenuViewDelegate {
#IBOutlet weak var calendarView: CVCalendarView!
#IBOutlet weak var menuView: CVCalendarMenuView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
self.navigationController?.navigationBar
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
calendarView.commitCalendarViewUpdate()
menuView.commitMenuViewUpdate()
}
func presentationMode() -> CalendarMode {
return CalendarMode.MonthView
}
func firstWeekday() -> Weekday {
return Weekday.Sunday
}
}
This is the what is rendered when compiled:
If you want to see the month title also you need to create a UIlabel and UIlabel outlet as such:
#IBOutlet weak var monthLabel: UILabel!
I got this answer by copying the code from Mozharovsky/CVCalendar Demo ViewController.swift file