I need to verify the characters in a NSTextField as they are being input.
I've tried every solution proposed by google and I'm now tearing my hair out because NSTextField input verification is a standard thing to do, which means that I'm failing to understand something basic.
class MyWinController: NSWindowController, NSTextFieldDelegate {
#IBOutlet var textField: NSTextField!
override func windowDidLoad() {
super.windowDidLoad()
}
#IBAction func textField(_ sender: Any) {
print("MyWinController textField")
}
override func controlTextDidChange(notification: NSNotification) {
print("APNewAPStaticWindowController controlTextDidChange")
}
}
The textField function works but when I include the controlTextDidChange function I get the compiler error: Method does not override any method from its superclass.
Help would be greatly appreciated. Thanks.
Related
I'm trying to learn swift code for mac OSX but there isn't much tutorials for it as ios. and i have been struggling already with closing or dismissing the view controller when i launch through a button another connected view controller
class ViewController: NSViewController {
#IBOutlet weak var username: NSTextField!
#IBOutlet weak var password: NSTextField!
#IBAction func login(sender: AnyObject) {
}
#IBAction func signUp(sender: AnyObject) {
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
override var representedObject: AnyObject? {
didSet {
// Update the view, if already loaded.
}
}
}
I tried to add [self dismissModalViewControllerAnimated:YES]; to dismiss it but it doesn't work it only shows errors. if anybody could point me to somewhere i can get more information or what i'm doing wrong?
Use
dismissViewController(self)
to dismiss the presented view controller.
About dismissViewController: from the NSViewController docs:
Dismisses a presented view controller, using the same animator that presented it.
and
In OS X, this is the universal way to dismiss a view controller, no matter how it was presented.
I am working on an app that requires my main view controller to receive notifications from its child view controller. To do this, I set up the observer in the viewDidLoad() method of the parent controller, and I am trying to call the postNotificationName() function when a button is pressed that is located in the child view controller.
When the postNotificationName() call is located in the #IBAction func buttonPressed(){ } function, the observer never gets the notification. However, when the same code is called from a different function in the same view controller, it works.
I thought this might be a thread issue, and unsuccessfully tried many of the solutions for that issue. I'm not very familiar with threading, though, so maybe I still missed it. Does anyone have any idea what the issue might be?
Thanks for the help!
ViewController
class GameController: UIViewController {
override func viewDidLoad() {
super.init()
NSNotificationCenter.defaultCenter().addObserver(self, selector: "attemptHumanMove:", name: Constants.NSNotificationKey.tilePressed, object: nil)
}
func attemptHumanMove(notification: NSNotification) {
print("test")
}
ChildViewController
#IBAction func tileTouched(sender: AnyObject) {
NSNotificationCenter.defaultCenter().postNotificationName(Constants.NSNotificationKey.tilePressed, object: nil, userInfo: ["a": 0])
}
Experimenting with the flow you have mentioned, the following code does receive the notification message from a child view controller.
ParentViewController
class ViewController: UIViewController {
#IBOutlet weak var notificationMsgLabel: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
notificationMsgLabel.text = "Waiting for notification..."
NSNotificationCenter.defaultCenter().addObserver(self, selector: "attemptHumanMove:", name: "tilePressed", object: nil)
}
func attemptHumanMove(notification: NSNotification) {
print("Notification message received!")
notificationMsgLabel.text = "Notification received!!!"
}
}
ChildViewController
class ChildViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
#IBAction func sendNotification() {
print("Sending notification message!!!")
NSNotificationCenter.defaultCenter().postNotificationName("tilePressed", object: nil, userInfo: ["a": 0])
}
}
Here you can find the screen shot of the storyboard:
Storyboard Snapshot
I'm new to Swift and Mac App.
So I'm writing an Mac App today and I still confuse how to access an IBOutlet from another class after searching a lot.
I'm using StoryBoard and there are two NSTextField path mirror in my ViewController.
I have created a custom class Path.swift for the first NSTextField path to know when the text in path has changed.
class Path: NSTextField, NSTextFieldDelegate
{
override func drawRect(dirtyRect: NSRect)
{
super.drawRect(dirtyRect)
// Drawing code here.
self.delegate = self
}
var current = ""
override func controlTextDidChange(obj: NSNotification)
{
current = self.stringValue
println("Current is \(current)")
}
}
And there are two outlets defined in ViewController.swift
class ViewController: NSViewController
{
override func viewDidLoad()
{
super.viewDidLoad()
// Do any additional setup after loading the view.
}
override var representedObject: AnyObject? {
didSet {
// Update the view, if already loaded.
}
}
#IBOutlet weak var path: NSTextField!
#IBOutlet weak var mirror: NSTextField!
}
And when user type something in the first NSTextField path, I want the second NSTextField mirror shows the same string as path.
I tried to use ViewController().mirror.stringValue = current, but I got fatal error: unexpectedly found nil while unwrapping an Optional value
After googling a lot, I knew that I have created a new instance of ViewController instead of accessing the current existing instance of ViewController.
So my question is how I can access the IBOutlet in ViewController.swift from Path.swift class (how to access the current existing instance of ViewController).
Any help will be greatly appreciated.
Thanks in advance.
I am trying to pass data between two viewContollers in an OS X storyboard application using Swift. When I press a button on VC1, it opens VC2, and prepareForSegue is run. However, I can't pass data back to VC1 because a. prepareForSegue isn't being run (because a window isn't being opened) and b. because even if it were, VC1 doesn't know data is being sent and I can't figure out a function (something like viewDidBecomeFocus, if such a function existed) to let it know to look. I feel like there must be a way to do this.
If you know of a way to do this in IOS but not OSX, it could still be useful.
Thanks!
Let assume that in your first ViewController you have one label and one button. When pressed, that button open popover (SecondViewController) with one textfield (and one button what says ready or close etc.), where you want take its value and assign it to your label. That is where delegates and protocols come handy.
SecondViewController:
#objc protocol TextDelegate {
func passedString(textValue: String)
}
class SecondViewController: NSViewController {
#IBOutlet weak var textField: NSTextField!
weak var delegate: TextDelegate?
override func viewDidLoad() {
super.viewDidLoad()
// Do view setup here.
}
#IBAction func closePopOver(sender: AnyObject) {
if delegate != nil {
delegate!.passedString(textField.stringValue)
}
self.dismissViewController(self)
}
}
This is ViewController:
#IBOutlet weak var myLabel: NSTextField!
override func prepareForSegue(segue: NSStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "mySegue" {
let vc = segue.destinationController as! SecondViewController
vc.delegate = self
}
}
func passedString(textValue: String) {
myLabel.stringValue = textValue
}
I have started using Swift: Version 6.0 (6A313)
As a newbie with Swift, I try both Playground and real code. It baffles me that this simple code works in a Playground but not when I put it into the class I want it in:
class CollectionViewCell: UICollectionViewCell {
for i in 1...3 {
println(i)
}
#IBOutlet weak var imageView: UIImageView!
}
Error message: "Expected declaration".
I appreciate any help.
Your code needs to be inside a function, for example:
class CollectionViewCell: UICollectionViewCell {
#IBOutlet weak var imageView: UIImageView!
func doSomething() {
for i in 1...3 {
println(i)
}
}
}
Otherwise there's no way to call this code, and no indication of when / how you expect it to run.