swift3

问题 I'm trying to understand the process of post request in xcode 8 swift 3. I managed to post data manually by adding value into "paramString". My question is, how to pass the data if the input data is coming from textfield ? I named it usernameTxt and passwordTxt . How to pass these value into PHP MySQL using the code below? What would "paramString" will be if the view controller have multiple textfield input into web services? My code so far as below import UIKit class ViewController:

问题 Migrating to Swift 3 from 2.3 and am running into this issue. The error is traceable to a view controller. I do not see any extensions/protocols which would require a 'Key' constrained to 'String'. I've tried to comment out code that might be causing the error, and have had strange results - ie removing an empty viewDidLoad() made the error appear in another class. I'll update the thread if I make progress. 回答1: Key is a type inside a structure maybe a struct/class like Dictionary. Use

问题 I am trying to store user's touchid for unlocking an app.But I am facing problems in storing the user's touch id data.Can someone tell me how to store it in our xcode. Here's the link address of app of touch id on which i am working. Any help for this? 回答1: You're not able to store user's touchid. I suggest reading one of the many tutorials available. E.g. https://code.tutsplus.com/tutorials/ios-8-integrating-touch-id--cms-21949 来源： https://stackoverflow.com/questions/43383774/how-to-store

问题 I use SWRevealViewController for my project. Currently, the problem is that when the project starts, Navigation bar show with title of "MyApp". But, navigation bar disappears when I click on Home If I add a Navigation Bar in view controller, there will be 2 navigation bars at first run. One navigation will automatically disappear when I click on Home link. How to do to get the first image appearance when I click on Home link? I'm using Swift 3 . 回答1: You could try set the navigation bar to

问题 I am using Nuance Speech kit in Swift 3 , I had downloaded the sample app for swift , the configuration has a variable , // Only needed if using NLU/Bolt var SKSNLUContextTag = "!NLU_CONTEXT_TAG!" I am able to find all the other credentials required for speech recognition except the context tag . How / where to find SKSNLUContextTag value ? 回答1: You actually need to sign up for Nuance Mix. After that you'll get NLU context tags. https://developer.nuance.com/mix 来源： https://stackoverflow.com

问题 I am trying to parse an XML as follows <CntyNtry> <EngNm>Virgin Islands (British)</EngNm> <FrNm>Vierges britanniques (les Îles)</FrNm> <A2Cd>VG</A2Cd> <A3Cd>VGB</A3Cd> <CtryNbr>92</CtryNbr> </CntyNtry> As you can see, there are some accents on some of the letters. I tried to parse the XML with following code func parser(_ parser: XMLParser, didStartElement elementName: String, namespaceURI: String?, qualifiedName qName: String?, attributes attributeDict: [String : String] = [:]) { if

问题 Is this the right way to save array of dictionaries in tableView using UserDefaults in Swift 3? var arrNotes = [String:String] func saveNotesArray () { UserDefaults.standard.set(arrNotes, forKey: "notes") UserDefaults.standard.synchronize() } 回答1: Use this function to get your notes: func saveNotesArray () { var notes = UserDefaults.standard.object(forKey: "notes") as? [String:String] } Are you getting object in same way? 回答2: "[String: String]" Means a dictionary where the keys and the

问题 I'm not getting the point where I'm making mistake while using Google SDK Login on custom button. The console is giving: "Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'You must specify |clientID| for |GIDSignIn|' *** First throw call stack:" Even I have given Client ID too see images below: I appreciate your responses. 回答1: Write Client ID in applicationdidfinish method of AppDelegate class or in viewDidLoad before the google signin delegating self. 来源：

问题 class MyManager { private static var __once: () = { Static.instance = MyManager() }() class var sharedInstance: MyManager { struct Static { static var onceToken: Int = 0 static var instance: MyManager? = nil } _ = MyManager.__once return Static.instance! } fileprivate init() { print("MyManager init"); } ....... etc calling it aManager = MyManager.sharedInstance results in MyManager init fatal error: unexpectedly found nil while unwrapping an Optional value 回答1: _ = MyManager.__once isn't

问题 Xcode forced me to update some old swift 2.3 syntax to 3.0. Alamofire is 4.0.1. When trying to build a project it fails with error for extra argument in call. Alamofire.request(url, .GET, parameters: ["part":"snippet,contentDetails", "key": API_KEY,"maxResults":50, "channelId":channelId], encoding: ParameterEncoding.URL, headers: nil).responseJSON { (response) in How do i fix this issue. It shows up in over 6 files in project. Almost identical error. 回答1: Do the call like below Alamofire