swift2

问题 So I was thinking about a custom pattern in my project, but I can't get it to work. The main idea is to change the typealias on every subclass to get access to the subclass specific interface. protocol InstanceInterface: class { typealias Interface var interface: Interface { get } } // Baseclass protocol FirstClassInterface: class { /* nothing here for the example */ } class FirstClass: InstanceInterface, FirstClassInterface { typealias Interface = FirstClassInterface var interface: Interface

问题 How can I diagnose this error Command /bin/sh failed with exit code 23 sent 130971 bytes received 42 bytes 262026.00 bytes/sec total size is 130816 speedup is 1.00 rsync -auv "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftSecurity.dylib" "/Users/jinteki/Library/Developer/Xcode/DerivedData/MyApp-xyz/Build/Products/Debug-iphonesimulator/MyApp.app/Frameworks" building file list ... rsync: link_stat "/Applications/Xcode.app

问题 Am I missing something or Xcode 7 should run only on new(beta) OSX 10.11 El Capitan? I downloaded beta and after some code changes to comply with Swift 2.0 my project compiles and runs fine under OSX 10.10.3. Am I missing something or Apple changed the game somehow? 回答1: Edit: Xcode 7 runs on OS X 10.10.4 Old: Yup Xcode 7 beta runs on OS X 10.10 As stated in the release notes below About Xcode 7 beta Supported Configurations Xcode 7 beta requires a Mac running OS X 10.10. Xcode 7 beta

问题 Am I missing something or Xcode 7 should run only on new(beta) OSX 10.11 El Capitan? I downloaded beta and after some code changes to comply with Swift 2.0 my project compiles and runs fine under OSX 10.10.3. Am I missing something or Apple changed the game somehow? 回答1: Edit: Xcode 7 runs on OS X 10.10.4 Old: Yup Xcode 7 beta runs on OS X 10.10 As stated in the release notes below About Xcode 7 beta Supported Configurations Xcode 7 beta requires a Mac running OS X 10.10. Xcode 7 beta

问题 How do I play an audio file when I touch a button, nothing is working that i can find online because its all swift 1. I want the audio code in the original function. import UIKit import AVFoundation class ViewController: UIViewController { @IBAction func original(sender: AnyObject) { } } 回答1: Here is some code to get you going: Swift 3 import UIKit import AVFoundation class ViewController: UIViewController { let player = AVQueuePlayer() @IBAction func original(sender: AnyObject) { if let url

问题 I know this question has been asked for ObjectiveC , but my Swift isn't strong enough yet to transliterate the char *bytes stuff. So given let string = "600DBEEF" How do I create an NSData which represents those 4 bytes: 60 0D BE EF ? 回答1: With the arrival of Swift3 and the new Foundation Data type, I finally circled back to this: extension UnicodeScalar { var hexNibble:UInt8 { let value = self.value if 48 <= value && value <= 57 { return UInt8(value - 48) } else if 65 <= value && value <= 70

问题 I have Array ; var mydates : [String] = [] let startDate = "2018-03-01" let endDate = "2018-03-03" And I have 3 variable , startDate , endDate , dates , i want to append that variables, like; if startDate = 2018-03-01, and endDate = 2018-03-03 will be add dates variable inside = "2018-03-01,2018-03-02,2018-03-03" between all dates from start and end dates. How can i do it in swift 2 any idea ? 回答1: Here is Solution for Print all dates between two Date (Swift 4 Code) var mydates : [String] = [

问题 I have been recently assigned a task of encrypting my links and parameters i pass in dataTaskWithRequest in swift. The main headache is it should produce the same output as Android platform. The android team has already created a backend using spring for decrypting the data. The java code is like this class AESencrp { private static final String ALGO = "AES"; private static final byte[] keyValue = new byte[]{'T', 'h', 'e', 'B', 'e', 's', 't', 'S', 'e', 'c', 'r', 'e', 't', 'K', 'e', 'y'};

问题 I don't know how to change the code for the pin color in iOS 9 (because lately Apple changed the code for it), and I'm still new in Swift. So, I don't know how to integrate pinTintColor in my code now. Please find below my code: import UIKit import MapKit class ViewController: UIViewController, MKMapViewDelegate { @IBOutlet var map: MKMapView! override func viewDidLoad() { super.viewDidLoad() let annotation = MKPointAnnotation() let latitude:CLLocationDegrees = 40.5 let longitude

问题 Am new to Swift and Storyboard. At initially I have to show the login page and from the login page to UITabBarController. Once the user remembered the login details I have to check the login details in the AppDelegate and show the UITabBarController directly if the user already logged in. I have referred some SOF questions but, am not getting the result. I designed the LoginViewController embedded with UINavigationController. And I have one UITabBarController with 2 viewcontrollers. I set the