嗨，我是 swift 新手，目前我正在从事一个项目，该项目之前在 swift 2.3 中为 iPad 和 iPhone 完成。我的要求是使用织物数字框架来使用手机号码进行注册。我按照文档中的内容进行了所有操作，但是由于某种原因，我的屏幕（UIViewController）中没有出现粉红色的“使用电话号码登录”按钮。代码如下。
import Alamofire
import SwiftyJSON
import DigitsKit
class ViewController: UIViewController, UITextFieldDelegate {
var phoneNum : String?
let movement: CGFloat = 20.0
var phoneHeight: CGFloat = 0.0
var appURLs = AppURLs.sharedInstance
var loadingView: UIView!
var Id: Int!
@IBOutlet weak var username: UITextField!
@IBOutlet weak var activity: UIActivityIndicatorView!
@IBOutlet weak var password: UITextField!
@IBAction func signUpButton(sender: AnyObject) {
let storyboard = switchStoryboards()
let vc = storyboard.instantiateViewControllerWithIdentifier("SignUpViewController")
self.presentViewController(vc, animated: false, completion: nil)
}
override func viewDidLoad() {
super.viewDidLoad()
configureLoadingView()
phoneHeight = self.view.frame.height
UIApplication.sharedApplication().statusBarHidden = true
self.username.delegate = self
self.password.delegate = self
self.slideMenuController()?.removeLeftGestures()
let usernameImageView = UIImageView()
if isIphone() {
usernameImageView.frame = CGRect(x: 0, y: 0, width: 36, height: 20)
} else {
usernameImageView.frame = CGRect(x: 0, y: 0, width: 54, height: 30)
}
usernameImageView.image = UIImage(named: "Username")
view.addSubview(usernameImageView)
username.leftView = usernameImageView
username.leftViewMode = UITextFieldViewMode.Always
let passwordImageView = UIImageView()
if isIphone() {
passwordImageView.frame = CGRect(x: 0, y: 0, width: 36, height: 20)
} else {
passwordImageView.frame = CGRect(x: 0, y: 0, width: 54, height: 30)
}
passwordImageView.image = UIImage(named: "Password")
view.addSubview(passwordImageView)
password.leftView = passwordImageView
password.leftViewMode = UITextFieldViewMode.Always
print("Login view did load loaded")
let authButton = DGTAuthenticateButton(authenticationCompletion: { (session, error) in
if (session != nil) {
// TODO: associate the session userID with your user model
let message = "Phone number: \(session!.phoneNumber)"
let alertController = UIAlertController(title: "You are logged in!", message: message, preferredStyle: .Alert)
alertController.addAction(UIAlertAction(title: "Cancel", style: .Cancel, handler: .None))
self.presentViewController(alertController, animated: true, completion: .None)
} else {
NSLog("Authentication error: %@", error!.localizedDescription)
}
})
authButton?.center = self.view.center
self.view.addSubview(authButton!)
}
override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
return UIInterfaceOrientationMask.Portrait
}
override func viewDidAppear(animated: Bool) {
super.viewDidAppear(true)
}
func configureLoadingView() {
loadingView = UIView(frame: CGRectMake(0, 0, self.view.bounds.size.width, self.view.bounds.size.height))
}
func loginAlerts(messages: String) {
self.activity.stopAnimating()
SwiftSpinner.show("Sign in Failed!", animated: false).addTapHandler({
SwiftSpinner.hide()
}, subtitle: messages)
}
func switchStoryboards() -> UIStoryboard {
switch UIDevice.currentDevice().userInterfaceIdiom {
case .Phone:
// It's an iPhone
return UIStoryboard(name: "Main", bundle: nil)
case .Pad:
return UIStoryboard(name: "StoryboardiPad", bundle: nil)
// It's an iPad
case .Unspecified:
return UIStoryboard(name: "Main", bundle: nil)
// Uh, oh! What could it be?
default:
return UIStoryboard(name: "Main", bundle: nil)
}
}
func isIphone() -> Bool {
switch UIDevice.currentDevice().userInterfaceIdiom {
case .Phone:
// It's an iPhone
return true
case .Pad:
return false
// It's an iPad
case .Unspecified:
return true
// Uh, oh! What could it be?
default:
return true
}
}
}