在我的应用程序中，我在主视图控制器（loginViewController.swift）中获取服务器凭据。当我点击'loginViewController'上的'Login'按钮时，它会显示app logoViewController，它具有活动指示器视图，并且凭证值通过https连接传递给远程服务器。我在远程服务器的响应中得到一个JSON数组，其中包含消息“Successful：1”或“Unsuccessful：0”以及其他应用程序详细信息。
对于JSON数组中的值'1'，我想显示menuViewController屏幕，对于值'0'，我想显示RegisterViewController屏幕，以便在应用程序中进一步处理。
调用'menuViewController'/'RegisterViewController'应该在'logoViewController'的后台进程中进行。
如果已经尝试过以下代码，但无法调用'menuViewController'/'RegisterViewController'。
如果我出错了，请告诉我。 UIStoryboard方法是对的吗？ 任何建议或链接或教程都会有所帮助。
import UIKit
class logoViewController: UIViewController {
@IBOutlet weak var act: UIActivityIndicatorView!
override func viewDidLoad() {
super.viewDidLoad()
self.act.startAnimating()
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// syncreq function is called from the connectionViewController.
// connectionViewController is the common class for connecting to the remote server
func syncreq (JSONdata: AnyObject) { // Proceesing for PRMS response
// Getting the value from the JSON
var Successful = self.getIntFromJSON(JSONdata as NSDictionary, key: "Successful")
println("Value of Successful : \(Successful)")
if (Successful == 0){
//let secondViewController = self.storyboard?.instantiateViewControllerWithIdentifier("registrationID") as regVC
//self.navigationController?.pushViewController(secondViewController, animated: true)
//performSegueWithIdentifier("registrationID", sender: self)
let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
var setViewController = mainStoryboard.instantiateViewControllerWithIdentifier("registrationID") as RegisterViewController
self.presentViewController(setViewController, animated: false, completion: nil)
}
else if (Successful == 1){
let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
var setViewController = mainStoryboard.instantiateViewControllerWithIdentifier("mnuID") as menuViewController
self.presentViewController(setViewController, animated: false, completion: nil)
}
}
func getIntFromJSON(data: NSDictionary, key: String) -> Int {
let info : AnyObject? = data[key]
// println("Value of data[key] : \(key)")
if let info = data[key] as? Int {
println("Value of value for \(key) : \(info)")
return info
}
else {
return 0
}
}
}
提前致谢
答案 0 :(得分：1)
我已经实现了一个通用函数，它将回调来自远程服务器的响应的调用函数。
以下是我实施的功能。
func connect(jsonString:NSDictionary) -> NSDictionary
{
var JSONdata: AnyObject = ["" : ""] as Dictionary<String, String>
println("------------------Function connserv")
let prefs = NSUserDefaults.standardUserDefaults()
var conn_timeout: AnyObject = prefs.objectForKey("conn_timeout")!
var numberFormatter = NSNumberFormatter()
var number:NSNumber? = numberFormatter.numberFromString(conn_timeout as! String)
if let number = number {
var integer = Int(number)
println("\(integer)")
}
var recon_maxcount: AnyObject = prefs.objectForKey("recon_maxcount")!
println("recon_maxcount in Connection : \(recon_maxcount)")
println("conn_timeout in Connection : \(conn_timeout)")
var recon_interval: AnyObject = prefs.objectForKey("recon_interval")!
println("recon_interval in Connection : \(recon_interval)")
var number1:NSNumber? = numberFormatter.numberFromString(recon_maxcount as! String)
if let number1 = number1 {
var integer1 = Int(number1)
println("\(integer1)")
}
var number2:NSNumber? = numberFormatter.numberFromString(recon_interval as! String)
//if let number2 = number2 {
var integer2 = Int(number2!)
var xval = UInt32(integer2)
println("\(xval)")
//}
var IP: AnyObject = prefs.objectForKey("IP")!
var port: AnyObject = prefs.objectForKey("Port")!
println("IP in Connection : \(IP)")
println("port in Connection : \(port)")
prefs.synchronize()
println("HTTP request jsonString : \(jsonString)")
var request = NSMutableURLRequest(URL: NSURL(string: "https://\(IP):\(port)/")!)
var response: NSURLResponse?
var error: NSError?
request.HTTPBody = NSJSONSerialization.dataWithJSONObject(jsonString, options: nil, error: &error)
request.timeoutInterval = (number as! NSTimeInterval)
request.HTTPMethod = "POST"
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
//request.setValue("application/json", forHTTPHeaderField: "Accept")
request.addValue("gzip", forHTTPHeaderField: "Accept-encoding")
println("Firing synchronous url connection......")
println(request)
//println("Before======\(i)!")
for (var i = 0; i < number1 as! Int ; i++)
{
var error: NSError?
println("Try connecting to server: \(NSDate())")
let urlData = NSURLConnection.sendSynchronousRequest(request, returningResponse: &response, error: &error)
//println("response : \(response)")
//println("error : \(error)")
if error != nil || urlData!.length == 0
{
println("Error happend timeout======\(error?.code)!")
println(NSDate())
sleep(xval as UInt32)
//println("NSDate()")
JSONdata = ["0" : "0"] as Dictionary<String, String>
continue
}
else
{
println("Successfully connected : \(NSDate())")
println("\(urlData!.length) bytes of data was returned")
println(response!);
if let httpResponse = response as? NSHTTPURLResponse {
println("Status Code ------------------------------------>\(httpResponse.statusCode)")
}
println(NSString(data: urlData!, encoding: NSUTF8StringEncoding)!)
var er: NSError?
let JSONresdata: AnyObject = (NSJSONSerialization.JSONObjectWithData(urlData!, options: .MutableContainers,error: &er)!)
println("==========================================================================================")
println("JSON response : \(JSONresdata)")
JSONdata = JSONresdata as! NSDictionary
break
}
}
println("out of for loop : \(JSONdata)")
return JSONdata as! NSDictionary;
}