I made a subclass of NSButton
class Button: NSButton {
var cursor = NSCursor()
override func resetCursorRects() {
super.resetCursorRects()
addCursorRect(bounds, cursor: .pointingHand)
}
}
on my VC class i have added
let tempBtn = Button()
to call subclass but still no use. What am i doing wrong.
This works for me.
class ViewController: NSViewController {
class Button: NSButton {
override func resetCursorRects() {
super.resetCursorRects()
addCursorRect(bounds, cursor: .pointingHand)
}
}
override func viewDidLoad() {
super.viewDidLoad()
let button = Button(frame: CGRect(x: 100, y: 100, width: 100, height: 50))
view.addSubview(button)
}
}
Related
I recently started developing in Swift (normally embedded C developer).
I want to create some button (later more than one) programmatically and change its label (just for practice).
For this I created a button class, which contains the button init and the callback function. My problem is that it seems like the #selector is not pointing to the instance of the button class the way I expected it will, so a button click does nothing. Can you tell me what I am doing wrong?
#objc class buttontest : NSObject{
let button = NSButton(frame: CGRect(x: 100, y: 100, width: 100, height: 50))
#objc func printSomething() {
print("Hello")
self.button.title="TEST13"
}
func buttoninit() -> NSButton{
self.button.title="Test"
self.button.bezelStyle=NSButton.BezelStyle.rounded
self.button.target=self;
//button.action = Selector(ViewController.printSomething)
self.button.action = #selector(self.printSomething)
return self.button
}
}
class ViewController: NSViewController {
private lazy var redBox = NSView(frame: NSRect(x: 0, y: 0, width: 100, height: 100))
override func viewDidLoad() {
super.viewDidLoad()
view.addSubview(redBox)
redBox.wantsLayer = true
redBox.layer?.backgroundColor = NSColor.red.cgColor
//button.init("Test12",self,Selector(printSomething())
let button = buttontest()
self.view.addSubview(button.buttoninit())
//self.view.addSubview(buttontest().buttoninit())
// Do any additional setup after loading the view.
}
override func loadView() {
self.view = NSView(frame: NSRect(x: 0, y: 0, width: NSScreen.main?.frame.width ?? 100, height: NSScreen.main?.frame.height ?? 100))
}
override var representedObject: Any? {
didSet {
// Update the view, if already loaded.
}
}
}
The OK version:
#objc class buttontest : NSObject{
let button = NSButton(frame: CGRect(x: 100, y: 100, width: 100, height: 50))
#objc func printSomething() {
print("Hello")
self.button.title="TEST13"
}
func buttoninit() -> NSButton{
self.button.title="Test"
self.button.bezelStyle=NSButton.BezelStyle.rounded
self.button.target=buttonX
self.button.action = #selector(buttontest.printSomething)
return self.button
}
}
let buttonX = buttontest()
class ViewController: NSViewController {
private lazy var redBox = NSView(frame: NSRect(x: 0, y: 0, width: 100, height: 100))
override func viewDidLoad() {
super.viewDidLoad()
view.addSubview(redBox)
redBox.wantsLayer = true
redBox.layer?.backgroundColor = NSColor.red.cgColor
self.view.addSubview(buttonX.buttoninit())
}
}
Will someone please explain why the following code is not placing a button in my view?
Button Class
class CustomButton: UIButton {
var button = UIButton()
func makeButton() {
button.frame = CGRect(x: 0, y: 0, width: 200, height: 200)
button.center = self.center
button.setTitle("PRESS", for: .normal)
button.backgroundColor = UIColor.red
button.addTarget(self, action: #selector(ViewController.buttonPressed), for: .touchUpInside)
self.addSubview(button)
}
}
Main Class
class ViewController: UIViewController {
var button: CustomButton?
override func viewDidLoad() {
super.viewDidLoad()
button?.makeButton()
}
#objc func buttonPressed() {
print("woohoo!")
}
}
You need to completely redo the CustomButton class. It should not have a button property. It should initialize itself.
And the setting of the target belongs in the view controller, not the button class.
Updated button code:
class CustomButton: UIButton {
init() {
super.init(frame: CGRect(x: 0, y: 0, width: 200, height: 200))
setTitle("PRESS", for: .normal)
backgroundColor = UIColor.red
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
Updated view controller:
class ViewController: UIViewController {
var button = CustomButton()
override func viewDidLoad() {
super.viewDidLoad()
view.addSubview(button)
button.addTarget(self, action: #selector(buttonPressed), for: .touchUpInside)
}
#objc func buttonPressed() {
print("woohoo!")
}
}
I have my Push button in subview called AddContactViewController
And I'm showing it in ScrollView in another ViewController called AddContactScrollViewController.
I'm setting action for my button in AddContactViewController
But, when I click my button nothing happens.
Here are the screenshots my IB. And below is the code.
Main view controller
SubView
import Cocoa
class AddContactScrollViewController: NSViewController {
#IBOutlet weak var scrollView: NSScrollView!
var contentView: NSView?
override func viewDidLoad() {
super.viewDidLoad()
contentView = NSView(frame: NSRect(x: 0, y: 0, width: self.view.frame.width, height: 1123))
contentView!.wantsLayer = true
contentView!.layer?.backgroundColor = NSColor.clear.cgColor
let tempVC = self.storyboard?.instantiateController(withIdentifier: NSStoryboard.SceneIdentifier(rawValue: "addAddress")) as! AddAddressViewController
vc.view.setFrameOrigin(NSPoint(x: 0, y: 0))
vc.view.setFrameSize(NSSize(width: 1200, height: 1123))
vc.view.wantsLayer = true
contentView!.addSubview(vc.view)
scrollView.documentView = contentView
// scroll to the top
if let documentView = scrollView.documentView {
documentView.scroll(NSPoint(x: 0, y: documentView.bounds.size.height))
}
}
override func viewDidAppear() {
}
}
import Cocoa
class AddContactVeiwController: NSViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
#IBAction func addPhoneButtonClicked(_ sender: Any) {
print("phone button clicked")
}
I'm trying to add a number of customClass buttons to my view automatically, based on the size of an array.
Created the class and called the appropriate method in the class, but nothing shows up. Debugging tells me that the method is called/executed as expected (3x).
When I add the function directly to the view controller it does work.
What am I missing here ???
ViewController code:
import UIKit
class ViewController: UIViewController {
let userArray: [String] = ["One","Two","Three"]
override func viewDidLoad() {
super.viewDidLoad()
for item in userArray {
CustomCheckBox().showNewButton()
}
}
.. Other stuff...
}
CustomButton class code:
{
import UIKit
class CustomCheckBox: UIButton {
let checkedImage: UIImage = UIImage(named:"chckbox_on")!
let uncheckedImage: UIImage = UIImage(named: "chckbox_off")!
var newButton: CustomCheckBox!
..... other functions (isChecked, buttonClicked, ..)
func showNewButton (){
newButton = CustomCheckBox (type: UIButtonType.Custom)
newButton.bounds = CGRect(x: 0, y: 0, width: 45, height: 45)
newButton.center = CGPoint(x: 40, y: 40)
newButton.addTarget(newButton, action: #selector(CustomCheckBox.buttonClicked(_:)), forControlEvents: UIControlEvents.TouchUpInside)
newButton.isChecked=false
self.addSubview(newButton)
}
}
May consider restructuring your code like this
class CustomCheckBoxContainer: UIView {
var newButton: CustomCheckBox!
func showNewButton (){
newButton = CustomCheckBox (type: UIButtonType.custom)
newButton.bounds = CGRect(x: 0, y: 0, width: 45, height: 45)
newButton.center = CGPoint(x: 40, y: 40)
newButton.addTarget(newButton, action: #selector(CustomCheckBox.buttonClicked(_:)), for: UIControlEvents.TouchUpInside)
newButton.isChecked=false
self.addSubview(newButton)
}
}
class CustomCheckBox: UIButton {
let checkedImage: UIImage = UIImage(named:"chckbox_on")!
let uncheckedImage: UIImage = UIImage(named: "chckbox_off")!
//add here all your button functionality
}
and then change your view did load to something like this:
override func viewDidLoad() {
super.viewDidLoad()
for item in userArray {
let customCheckBoxContainer = CustomCheckBoxContainer()
customCheckBoxContainer.showNewButton()
self.view.addSubview(customCheckBoxContainer)
}
}
pass your current View as parameter of your function like this.
override func viewDidLoad() {
super.viewDidLoad()
for item in userArray {
CustomCheckBox().showNewButton(self.view)
}
}
Modify your custom UIButton function newButton like this
func showNewButton (currentView : UIView){
newButton = CustomCheckBox (type: UIButtonType.Custom)
newButton.bounds = CGRect(x: 0, y: 0, width: 45, height: 45)
newButton.center = CGPoint(x: 40, y: 40)
newButton.addTarget(newButton, action: #selector(CustomCheckBox.buttonClicked(_:)), forControlEvents: UIControlEvents.TouchUpInside)
newButton.isChecked=false
currentView.addSubview(newButton)
}
I tried this:
import Cocoa
class ViewController: NSViewController {
#IBOutlet weak var butt: NSButton!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
override var representedObject: AnyObject? {
didSet {
// Update the view, if already loaded.
}
}
#IBAction func buttPressed(sender: AnyObject) {
let myPath = NSBezierPath()
myPath.moveToPoint(CGPoint(x: 20, y: 20))
myPath.lineToPoint(CGPoint(x: 100, y: 100))
myPath.stroke()
}
}
It compiles and runs but doesn't draw anything when the button is clicked.
I tried setting the color: NSColor.redColor().set(), setting the width: myPath.lineWidth = 20 and using NSPoint instead of CGPoint but still the same thing happens. What is it that I'm missing?
Thank you for your answers in advance and sorry for the elementary question.
Try doing it inside drawRect (NSView):
import Cocoa
final class Line: NSView {
override func drawRect(dirtyRect: NSRect) {
let myPath = NSBezierPath()
myPath.moveToPoint(CGPoint(x: 20, y: 20))
myPath.lineToPoint(CGPoint(x: 100, y: 100))
myPath.stroke()
}
}
final class ViewController: NSViewController {
override func viewDidLoad() {
super.viewDidLoad()
let frame = CGRect(x: 0, y: 0, width: 100, height: 100)
let line = Line(frame: frame)
view.addSubview(line)
}
override var representedObject: AnyObject? {
didSet {
// Update the view, if already loaded.
}
}
}