Swift3 Alamofire SwiftyJSON得到外界的數據founcion

Question

我試圖讓swfityjson和阿爾莫在Xcode 8 工作就像郵局在此頁：

Showing JSON data on TableView using SwiftyJSON and Alamofire

但我不能得到的數據自。 這幫了我一些，但我堅持與伯爵。有人請幫助我，因爲我是新來的迅速，並花了一天的時間，試圖瞭解如何獲得行數和數據出almo函數。

import UIKit 
import Alamofire 
import SwiftyJSON 

class TableViewController: UITableViewController { 

var names = [String]() 
var rowCount = [Int]() 
var tableTitle = [String]() 
typealias JSONStandard = [String : AnyObject] 

override func viewDidLoad() { 
    super.viewDidLoad() 
    // Do any additional setup after loading the view, typically from a nib. 

} 


func callAlamo(){ 
    let url = "http://xxxxxx/xxxx/xxxxxx.php" 
    //let id = UserDefaults.standard.string(forKey: "UserDefaults") 
    Alamofire.request(url).responseJSON{(respones)->Void in 

     if let value = respones.result.value{ 
      let json = JSON(value) 
      let rows = json["items"].arrayValue 
      for anItem in rows { 
       let title: String? = anItem["SupplierName"].stringValue 
       self.tableTitle.append(title!) 
       //print(self.tableTitle.count) 
      } 

     } 


    } 
} 

override func didReceiveMemoryWarning() { 
    super.didReceiveMemoryWarning() 
    // Dispose of any resources that can be recreated. 
} 

override func viewDidAppear(_ animated: Bool) { 
    // let isUserLoggedin = UserDefaults.standard.boll(forKey: "userLogIn") 
    let ststus = UserDefaults.standard.string(forKey: "userLogIn") 
    if ststus == "false" { 
     self.performSegue(withIdentifier: "loginView", sender: self) 
    }else{ 

     callAlamo() 
    } 
} 



@IBAction func logout(_ sender: AnyObject) { 
    UserDefaults.standard.set(false, forKey: "userLogIn") 
    UserDefaults.standard.synchronize() 
    self.performSegue(withIdentifier: "loginView", sender: self) 
} 


    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { 
    print (tableTitle) 
    return self.tableTitle.count 
} 

}

我無法獲得tableTitle.count。謝謝！

Answer 1

UITableView委託方法在viewDidAppear之前被調用。所以，你需要重新加載的UITableView了從服務器

DispatchQueue.main.async { 
      self.tableView.reloadData()    
     } 

響應後for循環之後。

Answer 2

import UIKit 
import Alamofire 
import SwiftyJSON 

class TableViewController: UITableViewController { 

var names = [String]() 
var rowCount = [Int]() 
var tableTitle = [String]() 
typealias JSONStandard = [String : AnyObject] 

override func viewDidLoad() { 
    super.viewDidLoad() 
    // Do any additional setup after loading the view, typically from a nib. 

} 


func callAlamo(){ 
    let url = "http://pos1.dermedia.co.il/iphone/getLasttransactions.php?cardid=" 
    //let id = UserDefaults.standard.string(forKey: "UserDefaults") 
    Alamofire.request(url).responseJSON{(respones)->Void in 

     if let value = respones.result.value{ 
      let json = JSON(value) 
      // print (json["items"].arrayValue) 
      let rows = json["items"].arrayValue 
      // print (rows) 
      for anItem in rows { 
       let title: String? = anItem["SupplierName"].stringValue 
       self.tableTitle.append(title!) 
       print(self.tableTitle.count) 
      } 

     } 
     DispatchQueue.main.async { 
      self.tableView.reloadData() 
     } 

    } 

} 

override func didReceiveMemoryWarning() { 
    super.didReceiveMemoryWarning() 
    // Dispose of any resources that can be recreated. 
} 

override func viewDidAppear(_ animated: Bool) { 
    // let isUserLoggedin = UserDefaults.standard.boll(forKey: "userLogIn") 
    let ststus = UserDefaults.standard.string(forKey: "userLogIn") 
    if ststus == "false" { 
     self.performSegue(withIdentifier: "loginView", sender: self) 
    }else{ 

     callAlamo() 
     print ("gggggg") 
     print(self.tableTitle.count) 
    } 
} 



    @IBAction func logout(_ sender: AnyObject) { 
    UserDefaults.standard.set(false, forKey: "userLogIn") 
    UserDefaults.standard.synchronize() 
    self.performSegue(withIdentifier: "loginView", sender: self) 

} 


override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { 
    print (self.tableTitle) 
    print("hhh") 
    return tableTitle.count 
} 





}