I am trying to create a swift file that will detect keyboard input from MacOS for a SceneKit game in swift. I am using the NSEvent to handle key events but I keep getting the error 'use of undeclared type NSEvent. Is there an easier way to achieve this?
I have tried the following code:
override func keyDown(event: NSEvent) {
interpretKeyEvents([event]) // calls insertText(_:), moveUp(_:), etc.
}
override func insertText(insertString: AnyObject) {
let str = insertString as! String
switch str {
case " ":
println("User hit the spacebar.")
default:
println("Unrecognized input: \(str)")
}
}
override func moveUp(sender: AnyObject?) {
println("Up arrow.")
}
override func moveLeft(sender: AnyObject?) {
println("Left arrow.")
}
override func deleteBackward(sender: AnyObject?) {
println("Delete.")
}
This will work:
override func keyDown(theEvent: NSEvent) {
let keyCode = theEvent.keyCode if(keyCode == 123)//Left{
}
if(keyCode == 124)//Right
{
}
if(keyCode == 125)//Down
{
}
if(keyCode == 126)//Up
{
}
This is an update (2020) to a QA asked in (2015).
override func pressesBegan(_ presses: Set<UIPress>, with event: UIPressesEvent?) {
guard let key = presses.first?.key else { return }
switch key.keyCode {
case .keyboardR:
print("Roll dice")
case .keyboardH:
print("Show help")
default:
super.pressesBegan(presses, with: event)
}
}
Related
I've been trying for a long time to program an Xcode interface to communicate with my Arduino Mega. but the whole thing didn't work as well as intended. I did the whole thing with ORSSerialPort.
In the Xcode project I wrote this for the swift file ViewController.swift :
import Cocoa
import ORSSerial
class ViewController: NSViewController, ORSSerialPortDelegate {
var serialPort = ORSSerialPort(path: "/dev/cu.usbmodem142101")
func SendString(data: String){
let stringData = Data(data.utf8)
serialPort?.send(stringData)
}
func openPort(){
serialPort?.baudRate=9600
serialPort?.delegate=self
serialPort?.parity = .none
serialPort?.numberOfStopBits = 1
serialPort?.open()
print("serialport is open")
}
func closePort(){
serialPort?.delegate=nil
serialPort?.close()
print("serialport is close")
}
override func viewDidLoad() {
super.viewDidLoad()
}
override var representedObject: Any? {
didSet {
}
}
#IBAction func onButton(_ sender: Any) {
openPort()
}
#IBAction func OffButton(_ sender: Any) {
closePort()
}
#IBAction func SendButton(_ sender: Any) {
SendString(data: "stringdata blablabla")
}
func serialPortWasOpened(_ serialPort: ORSSerialPort) {
print("serialPort to \(serialPort) is run")
}
func serialPortWasRemovedFromSystem(_ serialPort: ORSSerialPort) {
self.serialPort = nil
}
}
and this code i have load on the Arduino mega:
String angel;
void setup() {
Serial.begin(9600);
}
void loop() {
angel = Serial.readString();
Serial.println(angel);
delay(350);
}
unfortunately it doesn't work and I don't know why.
Your question doesn't provide any detail about what part(s) don't work, but there's one definite problem.
Your Arduino program looks like it echos everything it receives on the serial port back on the same port. In order to see that on the computer, you'll have to implement the serialPort(_:didReceive:) method in your view controller. Something like this:
func serialPort(_ serialPort: ORSSerialPort, didReceive data: Data) {
guard let string = String(data: data, encoding: .ascii) else { return; }
print("Received: \(string)")
}
I'm having 2 buttons button1 & button2
when button1 is pressed I have to get url1 and when button2 is pressed get url2 in the below function
func fetchXMLData() {
XMLParserFactory.fetchData(url: "https://brwterrgn.ergwgw.com/etwtt.cms") { (listOfXMLVM, error) in
print("Fetch xml data")
if error == nil {
self.listOfNewsVM = listOfXMLVM!
self.tableView.reloadData()
}
else {
print(error?.localizedDescription ?? "Error")
}
}
}
}
Add parameter to this fetchXMLData function
func fetchXMLData(withUrl url: String)
also replace your url by this url variable
XMLParserFactory.fetchData(url: url)
Now in every IBAction call this function with different url passed as parameter of this method
#IBAction func button1pressed(_ sender: UIButton) {
fetchXMLData(withUrl: "url1.com")
}
#IBAction func button2pressed(_ sender: UIButton) {
fetchXMLData(withUrl: "url2.com")
}
You can try to make the url a parameter and change it from the caller place
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
fetchXMLData(url: "https://value.com/etwtt.cms")
}
func buttonAct(_ sender: UIButton) {
fetchXMLData(url: "https://brwterrgn.ergwgw.com/etwtt.cms")
}
func fetchXMLData(url:String) {
XMLParserFactory.fetchData(url:url) { (listOfXMLVM, error) in
print("Fetch xml data")
if error == nil {
self.listOfNewsVM = listOfXMLVM!
self.tableView.reloadData()
}
else {
print(error?.localizedDescription ?? "Error")
}
}
}
Edit
class FirstVC: UIViewController {
func showSecond(_ sender: UIButton) {
let sec = //
sec.delegate = self
present/push(sec)
}
func fetchXMLData(url:String) {
XMLParserFactory.fetchData(url:url) { (listOfXMLVM, error) in
print("Fetch xml data")
if error == nil {
self.listOfNewsVM = listOfXMLVM!
self.tableView.reloadData()
}
else {
print(error?.localizedDescription ?? "Error")
}
}
}
class SecondVC: UIViewController {
weak var delegate:FirstVC?
func buttonAct(_ sender: UIButton) {
delegate?.fetchXMLData(url: "https://brwterrgn.ergwgw.com/etwtt.cms")
}
}
I would like to capture keyevents in my little app.
What I have done:
class ViewController : NSViewController {
...
override func keyDown(theEvent: NSEvent) {
if theEvent.keyCode == 124 {
println("abc")
} else {
println("abcd")
}
}
override var acceptsFirstResponder: Bool {
return true
}
override func becomeFirstResponder() -> Bool {
return true
}
override func resignFirstResponder() -> Bool {
return true
}
...
}
What happens:
When a key pressed, the Funk sound effect plays.
I've seen many posts talking about how this is a delegate the belongs to NSView and NSViewController does not have access. But the keydown function override auto completes in a class of type NSViewController leading me to believe that this is wrong.
Xcode 8.2.1 • Swift 3.0.2
import Cocoa
class ViewController: NSViewController {
#IBOutlet var textField: NSTextField!
override func viewDidLoad() {
super.viewDidLoad()
NSEvent.addLocalMonitorForEvents(matching: .flagsChanged) {
self.flagsChanged(with: $0)
return $0
}
NSEvent.addLocalMonitorForEvents(matching: .keyDown) {
self.keyDown(with: $0)
return $0
}
}
override func keyDown(with event: NSEvent) {
switch event.modifierFlags.intersection(.deviceIndependentFlagsMask) {
case [.command] where event.characters == "l",
[.command, .shift] where event.characters == "l":
print("command-l or command-shift-l")
default:
break
}
textField.stringValue = "key = " + (event.charactersIgnoringModifiers
?? "")
textField.stringValue += "\ncharacter = " + (event.characters ?? "")
}
override func flagsChanged(with event: NSEvent) {
switch event.modifierFlags.intersection(.deviceIndependentFlagsMask) {
case [.shift]:
print("shift key is pressed")
case [.control]:
print("control key is pressed")
case [.option] :
print("option key is pressed")
case [.command]:
print("Command key is pressed")
case [.control, .shift]:
print("control-shift keys are pressed")
case [.option, .shift]:
print("option-shift keys are pressed")
case [.command, .shift]:
print("command-shift keys are pressed")
case [.control, .option]:
print("control-option keys are pressed")
case [.control, .command]:
print("control-command keys are pressed")
case [.option, .command]:
print("option-command keys are pressed")
case [.shift, .control, .option]:
print("shift-control-option keys are pressed")
case [.shift, .control, .command]:
print("shift-control-command keys are pressed")
case [.control, .option, .command]:
print("control-option-command keys are pressed")
case [.shift, .command, .option]:
print("shift-command-option keys are pressed")
case [.shift, .control, .option, .command]:
print("shift-control-option-command keys are pressed")
default:
print("no modifier keys are pressed")
}
}
}
To get rid of the purr sound when pressing the character keys you need to subclass your view, override the method performKeyEquivalent and return true.
import Cocoa
class View: NSView {
override func performKeyEquivalent(with event: NSEvent) -> Bool {
return true
}
}
Sample Project
Swift4
Just found a solution for the very same problem, Swift4. The idea behind that: if the pressed key was handled by a custom logic, the handler shall return nil, otherwise the (unhandled) event...
class MyViewController: NSViewController {
override func viewDidLoad() {
super.viewDidLoad()
// ...
NSEvent.addLocalMonitorForEvents(matching: .keyDown) {
if self.myKeyDown(with: $0) {
return nil
} else {
return $0
}
}
}
func myKeyDown(with event: NSEvent) -> Bool {
// handle keyDown only if current window has focus, i.e. is keyWindow
guard let locWindow = self.view.window,
NSApplication.shared.keyWindow === locWindow else { return false }
switch Int( event.keyCode) {
case kVK_Escape:
// do what you want to do at "Escape"
return true
default:
return false
}
}
}
And here we are: no Purr / Funk sound when key is pressed...
[Update] Added check of keyWindow. Without this, keyDown() is fired even if another view/window contains the first responder...
I was trying to find an answer for swift 3, here is what worked for me:
Swift 3
import Cocoa
// We subclass an NSView
class MainView: NSView {
// Allow view to receive keypress (remove the purr sound)
override var acceptsFirstResponder : Bool {
return true
}
// Override the NSView keydown func to read keycode of pressed key
override func keyDown(with theEvent: NSEvent) {
Swift.print(theEvent.keyCode)
}
}
I manage to get it work from subclass of NSWindowController
class MyWindowController: NSWindowController {
override func keyDown(theEvent: NSEvent) {
print("keyCode is \(theEvent.keyCode)")
}
}
UPDATE:
import Cocoa
protocol WindowControllerDelegate {
func keyDown(aEvent: NSEvent)
}
class WindowController: NSWindowController {
var delegate: WindowControllerDelegate?
override func windowDidLoad() {
super.windowDidLoad()
delegate = window?.contentViewController as! ViewController
}
override func keyDown(theEvent: NSEvent) {
delegate?.keyDown(theEvent)
}
}
and ViewController:
class ViewController: NSViewController, WindowControllerDelegate {
#IBOutlet weak var textField: NSTextField!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
override var representedObject: AnyObject? {
didSet {
// Update the view, if already loaded.
}
}
override func keyDown(theEvent: NSEvent) {
textField.stringValue = "key = " + (theEvent.charactersIgnoringModifiers
?? "")
textField.stringValue += "\ncharacter = " + (theEvent.characters ?? "")
textField.stringValue += "\nmodifier = " + theEvent.modifierFlags.rawValue.description
}
}
let kLeftArrowKeyCode: UInt16 = 123
let kRightArrowKeyCode: UInt16 = 124
let kDownArrowKeyCode: UInt16 = 125
let kUpArrowKeyCode: UInt16 = 126
override func keyDown(with event: NSEvent) {
switch event.keyCode {
case kLeftArrowKeyCode:
print("left")
break
case kRightArrowKeyCode:
print("right")
break
case kDownArrowKeyCode:
print("down")
break
case kUpArrowKeyCode:
print("up")
break
default:
print("other")
super.keyDown(with: event)
break
}
print("Key with number: \(event.keyCode) was pressed")
}
The service I want to connect to is published via Bonjour.
I can find all the info with the Bonjour Browser, however if I try to gather the data programmatically, the only value I get, is the name of the service.
The NetService delegate is set and the function netServiceWillPublish is called.
The functions DidNotPublish or DidPublish are not executed.
The function netServiceBrowser gets all published netServices, but all properties are set to the default value of the datatype.
import UIKit
class BMNSDelegate : NSObject, NetServiceDelegate {
func netServiceWillPublish(_ sender: NetService) {
print("netServiceWillPublish:\(sender)"); //This method is called
}
func netService(_ sender: NetService, didNotPublish errorDict: [String : NSNumber]){
print("didNotPublish:\(sender)");
}
func netServiceDidPublish(_ sender: NetService) {
print("netServiceDidPublish:\(sender)");
}
func netServiceWillResolve(_ sender: NetService) {
print("netServiceWillResolve:\(sender)");
}
func netService(_ sender: NetService, didNotResolve errorDict: [String : NSNumber]) {
print("netServiceDidNotResolve:\(sender)");
}
func netServiceDidResolveAddress(_ sender: NetService) {
print("netServiceDidResolve:\(sender)");
}
func netService(_ sender: NetService, didUpdateTXTRecord data: Data) {
print("netServiceDidUpdateTXTRecordData:\(sender)");
}
func netServiceDidStop(_ sender: NetService) {
print("netServiceDidStopService:\(sender)");
}
func netService(_ sender: NetService,
didAcceptConnectionWith inputStream: InputStream,
outputStream stream: OutputStream) {
print("netServiceDidAcceptConnection:\(sender)");
}
}
class BMBrowserDelegate : NSObject, NetServiceBrowserDelegate, NetServiceDelegate {
func netServiceBrowser(_ netServiceBrowser: NetServiceBrowser,
didFind netService: NetService,
moreComing moreServicesComing: Bool) {
let nsnsdel = BMNSDelegate()
netService.delegate = nsnsdel
netService.resolve(withTimeout: 1)
print(netService.domain) // local.
print(netService.name) // This property is correct
print(netService.type) // _http._tcp.
print(netService.addresses) // Optional([])
print(netService.hostName) // nil
print(netService.port) // -1
print(moreServicesComing) //false
}
}
let SERVICE_TYPE = "_http._tcp."
let BM_DOMAIN = "local."
let browser = NetServiceBrowser()
let nsbdel = BMBrowserDelegate()
browser.delegate = nsbdel
browser.searchForServices(ofType: SERVICE_TYPE, inDomain: BM_DOMAIN)
RunLoop.current.run()
The error is that the services which are found in the ServiceBrowserDelegate function are not saved anywhere and therefore are discarded at the end of the function.
I found a working example here:
https://github.com/mattneub/Programming-iOS-Book-Examples/blob/61f0c753a080040e4a74b912e6c18dd97fe8bcaa/bk2ch24p853bonjour/ch37p1101bonjour/ViewController.swift
class ViewController: UIViewController, NetServiceBrowserDelegate, NetServiceDelegate {
var nsb : NetServiceBrowser!
var services = [NetService]()
#IBAction func doButton (_ sender: Any!) {
print("listening for services...")
self.services.removeAll()
self.nsb = NetServiceBrowser()
self.nsb.delegate = self
self.nsb.searchForServices(ofType:"_daap._tcp", inDomain: "")
}
func updateInterface () {
for service in self.services {
if service.port == -1 {
print("service \(service.name) of type \(service.type)" +
" not yet resolved")
service.delegate = self
service.resolve(withTimeout:10)
} else {
print("service \(service.name) of type \(service.type)," +
"port \(service.port), addresses \(service.addresses)")
}
}
}
func netServiceDidResolveAddress(_ sender: NetService) {
self.updateInterface()
}
func netServiceBrowser(_ aNetServiceBrowser: NetServiceBrowser, didFind aNetService: NetService, moreComing: Bool) {
print("adding a service")
self.services.append(aNetService)
if !moreComing {
self.updateInterface()
}
}
func netServiceBrowser(_ aNetServiceBrowser: NetServiceBrowser, didRemove aNetService: NetService, moreComing: Bool) {
if let ix = self.services.index(of:aNetService) {
self.services.remove(at:ix)
print("removing a service")
if !moreComing {
self.updateInterface()
}
}
}
}
I'm experimenting with sticker iMessage apps in iOS 10 and I'm running into an issue with the override func didStartSending(_ message: MSMessage, conversation: MSConversation) method in MSMessagesAppViewController. When "peeling" a sticker from an MSStickerView, I would expect to receive some sort of callback on the didStartSending method. But it appears this is not the case. Does anyone know if this is the expected behavior and/or if there's another way to subscribe to callbacks for when these stickers are peeled, dragged, and dropped into the MSConversation? I realize that didStartSending is reserved for when the user taps the send button, but surely there should be some way of knowing when users drag MSStickers without hacking together some UIView dragging/rect-reading heuristic.
Messages View Controller:
class MessagesViewController: MSMessagesAppViewController {
var nYCStickersBroswerViewController: NYCStickersBroswerViewController!
override func viewDidLoad() {
super.viewDidLoad()
nYCStickersBroswerViewController = NYCStickersBroswerViewController(stickerSize: .regular)
nYCStickersBroswerViewController.view.frame = self.view.frame
self.addChildViewController(nYCStickersBroswerViewController)
nYCStickersBroswerViewController.didMove(toParentViewController: self)
self.view.addSubview(nYCStickersBroswerViewController.view)
nYCStickersBroswerViewController.loadStickers()
nYCStickersBroswerViewController.stickerBrowserView.reloadData()
}
...
override func didStartSending(_ message: MSMessage, conversation: MSConversation) {
// Called when the user taps the send button.
print(message) // should this not contain the sticker that is peeled, dragged, and dropped into the conversation?
}
}
Sticker Browser:
import Foundation
import UIKit
import Messages
class ASSticker: MSSticker {
var identifier: String?
}
class NYCStickersBroswerViewController: MSStickerBrowserViewController {
var stickers = [ASSticker]()
override func viewDidLoad() {
super.viewDidLoad()
}
func changeBrowswerViewBackgroundColor(color: UIColor) {
stickerBrowserView.backgroundColor = color
}
func loadStickers() {
createSticker(name: "brooklyn", localizedDescription: "Brooklyn Bridge Sticker")
createSticker(name: "liberty", localizedDescription: "Statue of Liberty Sticker")
createSticker(name: "love", localizedDescription: "I Love New York Sticker")
createSticker(name: "mets", localizedDescription: "New York Mets Sticker")
createSticker(name: "rangers", localizedDescription: "New York Rangers Sticker")
createSticker(name: "subway", localizedDescription: "New York City MTA Subway Train Sticker")
}
func createSticker(name: String, localizedDescription: String) {
guard let stickerPath = Bundle.main.pathForResource(name, ofType: "png") else {
print("Call ae cab, you're intoxicated.")
return
}
let stickerURL = URL(fileURLWithPath: stickerPath)
let sticker: ASSticker
do {
try sticker = ASSticker(contentsOfFileURL: stickerURL, localizedDescription: localizedDescription)
sticker.identifier = "something unique"
stickers.append(sticker)
} catch {
print("Call a cab, you're intoxicated.")
}
}
override func numberOfStickers(in stickerBrowserView: MSStickerBrowserView) -> Int {
return self.stickers.count
}
override func stickerBrowserView(_ stickerBrowserView: MSStickerBrowserView, stickerAt index: Int) -> MSSticker {
return self.stickers[index]
}
}
Here's a subclass and delegate that will tie into the tap and long press gesture recognizers that MSStickerView is using for select and peel interactions. If the implementation of MSStickerView changes this may no longer provide events, but shouldn't crash.
import UIKit
import Messages
protocol InstrumentedStickerViewDelegate: class {
func stickerViewDidSelect(stickerView: MSStickerView)
func stickerViewDidPeel(stickerView: MSStickerView)
}
class InstrumentedStickerView: MSStickerView {
weak var delegate: InstrumentedStickerViewDelegate?
override init(frame: CGRect) {
super.init(frame: frame)
for gestureRecognizer in gestureRecognizers ?? [] {
if let tapGestureRecognizer = gestureRecognizer as? UITapGestureRecognizer {
tapGestureRecognizer.addTarget(self, action: #selector(didTap))
} else if let longPressGestureRecognizer = gestureRecognizer as? UILongPressGestureRecognizer {
longPressGestureRecognizer.addTarget(self, action: #selector(didLongPress))
}
}
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func didTap(tapGestureRecognizer: UITapGestureRecognizer) {
if tapGestureRecognizer.state == .Recognized {
delegate?.stickerViewDidSelect(self)
}
}
func didLongPress(longPressGestureRecognizer: UILongPressGestureRecognizer) {
if longPressGestureRecognizer.state == .Began {
delegate?.stickerViewDidPeel(self)
}
}
}
This is a workaround for sticker peeled and tapped events, it is not guaranteed that a particular sticker will be inserted but an approximation of such data points - you will have to use your subclass of MSStickerView. This solution is not futureproof, but works for the time being IMHO, therefore I welcome other ideas.
import UIKit
import Messages
class CustomStickerView : MSStickerView{
class GestureRecognizerReceiver : NSObject, UIGestureRecognizerDelegate{
func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
return true
}
}
let _recognizerDelegate = GestureRecognizerReceiver()
weak var _recognizer: UITapGestureRecognizer? = nil
func setupTapRecognizer(){
if _recognizer == nil {
let r = UITapGestureRecognizer(target: self, action: #selector(_customTapReceived))
r.cancelsTouchesInView = false
r.delegate = _recognizerDelegate
addGestureRecognizer(r)
_recognizer = r
}
}
func _customTapReceived(){
if let s = sticker{
Analytics.shared.reportEvent(name: "Sticker Inserted", description: s.localizedDescription)
}
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
super.touchesBegan(touches, with: event)
if let s = sticker{
Analytics.shared.reportEvent(name: "Sticker Peeled", description: s.localizedDescription)
}
}
}
Usage:
let sv = CustomStickerView(frame: _stickerViewHolder.bounds, sticker: sticker)
sv.setupTapRecognizer()
_stickerViewHolder.addSubview(sv)
sv.startAnimating()