swift

[Solved] Swift 4 Change Physics Gravity

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CGVectorMake has been deprecated. Use the following syntax to initialise a CGVector: self.physicsWorld.gravity = CGVector(dx: 0, dy: 0) Or, since you want a vector with both components 0: self.physicsWorld.gravity = CGVector.zero solved Swift 4 Change Physics Gravity

[Solved] Quiz app to pick questions from 8 group of questions randomly?

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Thanks for the advices guys. But I found the way on how to do it. I only changed the pickQuestion function. func pickQuestion () { if Questions.count > 0 && questionscount < 8{ QNumber = Int(arc4random_uniform(UInt32(Questions.filter{$0.Question.hasPrefix(“KEK”)}.count))) questionscount += 1 questionLabel.text = Questions.filter{$0.Question.hasPrefix(“KEK”)}[QNumber].Question self.title = “Ερώτηση: \(Int(questionscount))/50” answerNumber = Questions[QNumber].Answer for i in 0..<buttons.count{ buttons[i].setTitle(Questions[QNumber].Answers[i], for: … Read more

[Solved] Could you please explain the following code, especially the func statement

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If you have any doubts regarding the UITextFieldDelegate see this example. This func is called just before the typed charecter comes to the textfield. This func is mainly used for the validation. Just to understand what happens I have written small code. func textField(textField: UITextField, shouldChangeCharactersInRange range: NSRange, replacementString string: String) -> Bool { print(“TextField … Read more

[Solved] Xcode says: “use of undeclared type” and “‘{‘ after ‘if’ condition”. Other threads on this site don’t have the answer [closed]

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Xcode says: “use of undeclared type” and “‘{‘ after ‘if’ condition”. Other threads on this site don’t have the answer [closed] solved Xcode says: “use of undeclared type” and “‘{‘ after ‘if’ condition”. Other threads on this site don’t have the answer [closed]

[Solved] How to get data from website

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This is simple way 1) Get the html content from the url: you can use – NSURLSession NSURLSession *session = [NSURLSession sessionWithConfiguration:sessionConfig delegate:nil delegateQueue:nil]; [[session dataTaskWithURL:[NSURL URLWithString:urlString] completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) { – NSURLConnection: NSURLConnection *urlConnection = [[NSURLConnection alloc] initWithRequest:self.request delegate:self]; dataWithContentsOfURL: NSData * htmlData = [NSData dataWithContentsOfURL:[NSURL URLWithString:urlString]]; 2) Parse the variable … Read more

[Solved] Update Once each in specific time [closed]

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Your code doesn’t add much to your question, so I don’t really know if this is what you are looking for, but here is some code to call a function every X time (swift 3): // call MyMethod every 1 second : Timer.scheduledTimer(timeInterval: 1, target: self, selector: #selector(MyController.myMethod), userInfo: nil, repeats: true) Please search before … Read more

[Solved] swift 4 label that each time i hit the button the label shows a different word [closed]

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You need to create an array first: let creatures = [“Cat”, “Dog”, “Bird”, “Butterfly”, “Fish”] And add an IBOutlet for your label: @IBOutlet weak var label: UILabel! And add an IBAction for your button: @IBAction func updateLabelButtonTapped(_ sender: UIButton) { // Get the index of a random element from the array let randomIndex = Int(arc4random_uniform(UInt32(creatures.count))) … Read more

[Solved] Google label is not sharp (WKWebView)

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I have found the solution. Just set customUserAgent : webView.customUserAgent = “Mozilla/5.0 (iPhone; CPU iPhone OS 11_2_5 like Mac OS X) AppleWebKit/604.5.6 (KHTML, like Gecko) Version/11.0 Mobile/15D60 Safari/604.1” solved Google label is not sharp (WKWebView)

[Solved] Why isEmpty not working here ?

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A struct with two generic placeholder types ≠ dictionary. If you need a dictionary, then create an instance of a dictionary like so: var dictionaryInstance = [Int: String]() isEmpty works now: print(dictionaryInstance.isEmpty) // true You can also create a typealias: typealias MyDictionary = [Int: String] var myDictionaryInstance = MyDictionary() 2 solved Why isEmpty not working … Read more

[Solved] How to make app update available to users in the form of an attractive screen? [closed]

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You can get all App info from iTunes store lookup API: http://itunes.apple.com/lookup?bundleId=YOUR_BUNDLE_ID, in this you can get App version on App Store. Make your design screen as you want to show your App users, Then compare your App version on App store & user’s device, if both version not equal then show the update version … Read more

[Solved] How to stop or disable portrait/auto rotate app in ios swift?

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Try this : By User Interface Programatically Add this in appdelegate func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask { return UIInterfaceOrientationMask(rawValue: UIInterfaceOrientationMask.landscape.rawValue) } 1 solved How to stop or disable portrait/auto rotate app in ios swift?

[Solved] How to compare array of dates with greater than current date

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i Resolved my issue by using stack overflow suggestions. and i am posting my answer it may helpful for others. extension Date { var startOfWeek: Date? { let gregorian = Calendar(identifier: .gregorian) guard let sunday = gregorian.date(from: gregorian.dateComponents([.yearForWeekOfYear, .weekOfYear], from: self)) else { return nil } return gregorian.date(byAdding: .day, value: 1, to: sunday) } var … Read more

[Solved] Multiple search in string – swift 4+

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You may find a database command to get this kind of search. In swift, it’s easy to construct such a predicate like the following if I understand your requirement right. let multipleSearchString = “my stg l la ma” let texts = [“mystringlladm1a”, “mystr2ingllama”, “mystri2ngllama”, “mys3ringllama”] let key = multipleSearchString.compactMap{ $0 == ” ” ? nil … Read more