As you are saying that you can’t nil the button’s text, you should do this, You can implement this Bool extension also, extension Bool { mutating func toggle() { self = !self } } @IBAction func myButton(_ sender: UIButton) { sender.titleLabel?.isHidden.toggle() } this will show and hide your Button’s titleLabel text. UPDATE @IBAction func btnTapped(_ … Read more
You might feel surprised to have received so many vote-downs. The reason is that you have not provided any information concerning what you have tried to solve the problem. Since you have not provided any specifics either, I’ll assume you want some basically structured data (e.g. JSON) to send/retrieve from server. Following code will let … Read more
First you need to create an enumeration for the weekdays: extension Date { enum Weekday: Int { case sunday = 1, monday, tuesday, wednesday, thursday, friday, saturday } } Second create an extension to return the next weekday desired: extension Date { var weekday: Int { return Calendar.current.component(.weekday, from: self) } func following(_ weekday: Weekday) … Read more
I found the solution. You have to add a closure and then use it when calling the function. func getData(symbol: String, completion: @escaping (Stock) -> Void) { let apiURL = “https://cloud.iexapis.com/stable/stock/\(symbol)/quote?token=\(secretToken)” let url = URL(string: apiURL)! URLSession.shared.dataTask(with: url) { (data, response, err) in guard let data = data else { return } do { let … Read more
Asynchronous methods! You have to wait for the completion before you move on to the next step. Put the second block within the first completion handler – like this func pictureFromFirebase(loginMethod: Int) { if loginMethod == 0 //FB { var profilePic = FBSDKGraphRequest(graphPath: “me/picture”, parameters: [“height”:300, “width”:300, “redirect”:false], httpMethod: “GET”) let profilePicRef = storageRef.child((user?.uid)!+”/profile_pic.jpg”) profilePicRef.data(withMaxSize: … Read more
The empty string is the only empty string, so there should be no cases where string.isEmpty() does not return the same value as string == “”. They may do so in different amounts of time and memory, of course. Whether they use different amounts of time and memory is an implementation detail not described, but … Read more
Try this. I’m assuming the return true does not belong there. You can’t return a value outside of a method. override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) { if editingStyle == .delete { self.contacts.remove(at: indexPath.row) tableView.deleteRows(at: [indexPath], with: .fade) } } solved expected Declaration (Won’t Compile) [duplicate]
The function retrieveContactsWithStore must be outside of the @IBAction @IBAction func btnContactsTapped() { let store = CNContactStore() if CNContactStore.authorizationStatus(for: .contacts) == .notDetermined { store.requestAccess(for: .contacts, completionHandler: { (authorized, error) in if authorized { self.retrieveContactsWithStore(store: store) } }) } else if CNContactStore.authorizationStatus(for: .contacts) == .authorized { self.retrieveContactsWithStore(store: store) } } func retrieveContactsWithStore(store: CNContactStore) { do { … Read more
Based on this file https://pastebin.com/Z3vJsD77 you posted above. You can directly access the chargeLimitSOC property from this model like following – let chargeLimitSOC = chargeState.chargeLimitSOC Relevant part in your model is here – open class ChargeState: Codable { open var chargeLimitSOC: Int? enum CodingKeys: String, CodingKey { case chargeLimitSOC = “charge_limit_soc” } } 1 solved … Read more
You can keep one extra Boolean variable to maintain the state of the button. Modify the bool value on every click. On didSet of the variable, you can update your button Image. If you have multiple states of the button you can have one enum. private var isButtonActive: Bool = true { didSet { let … Read more
You have to use this code in try catch like below.. if let rtf = NSBundle.mainBundle().URLForResource(“rtfdoc”, withExtension: “rtf”) { do { let attributedString = try NSAttributedString(fileURL: rtf, options: [NSDocumentTypeDocumentAttribute:NSRTFTextDocumentType], documentAttributes: nil) textView.attributedText = attributedString textView.editable = false print(attributedString) } catch let error as NSError { print(error.localizedDescription) } } solved Update code to swift 2 [closed]
You can try this, you have to create an array of labels or a collection of labels. func assignLabel(){ if yourArray.count > labelsArrays.count { yourArray.removeFirst() } for i in 0..<yourArray.count { labelsArrays[i].text = yourArray[i] } } solved How to change multiple labels one at a time? – Swift
I managed to fix the problem by myself. I didn’t post the code, because there was too much of it, and I simply could post it all here. But if someone has the same problem – here is the solution. Turns out, that while cells are being reused ( cell goes off the screen), all … Read more
Just for the record, what I was looking for was User Notifications. Here is a complete example. User Notifications func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool { UNUserNotificationCenter.current().requestAuthorization(options:[.badge, .alert, .sound]) { (granted, error) in if granted{ print(“User gave permissions for local notifications”) }else{ print(“User did NOT give permissions for local notifications”) } … Read more
It may come from your AppDelegate. Could you show us you AppDelegate ? Apple introduce SceneDelegate that can impact your AppDelegate. If you don’t want to use SceneDelegate, you should define the UIWindow in the AppDelegate : var window: UIWindow? and init your variable : window = UIWindow(frame: UIScreen.main.bounds) in func application(_ application: UIApplication, didFinishLaunchingWithOptions … Read more