URLから取得中にデータがグローバル変数に追加されない

Question

私はあなたの助けが必要です。私はURLからデータを取得しており、tableviewに表示したいと思っています。しかし、私がデータをダウンロードしたとき。データが正常に取得されますが、同じデータがアレイ列型を行くグローバル変数に格納されている場合、それは意志を示した。.. 私のコード

let requestURL: NSURL = NSURL(string: "https://api.myjson.com/bins/260yg")! 
    let urlRequest: NSMutableURLRequest = NSMutableURLRequest(URL: requestURL) 
    let session = NSURLSession.sharedSession() 
    let task = session.dataTaskWithRequest(urlRequest) { 
     (data, response, error) -> Void in 
     //print(NSString(data:data!,encoding:NSUTF8StringEncoding)) 
     do{ 
      let json = try NSJSONSerialization.JSONObjectWithData(data!, options:.AllowFragments) 
      if let users = json["userid"] as? NSArray 

      { 
       for(var i = 0; i < users.count; i++) 
       { 
        if let userindex = users[i] as? NSDictionary 
        { 
         if let username = userindex ["name"] as? NSString 
         { 

          self.tablename.append(username as String) 
          print(self.tablename) 
         if let email = userindex ["email"] as? NSString 
         { 
          self.tableemail.append(email as String) 

         } 
        } 
       } 
      } 
} 
      else 
      { 
       print("nil") 
      } 
      } 
     catch 
     { 
      print("Error with Json: \(error)") 
     } 
     } 

    task.resume() 

番目の電子のグローバル変数名は助けてくださいテーブル名とtableemail です私！

Answer 1

ここでは、あなたの質問の調査の例です。このようなことをしたかったのですか？

ViewController.swift

import UIKit 

class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource { 

@IBOutlet var tableView: UITableView! 
var dataIsLoading = true 
var usersArray = [User]() 

override func viewDidLoad() { 
    super.viewDidLoad() 

    tableView.delegate = self 
    tableView.dataSource = self 

    let requestURL: NSURL = NSURL(string: "https://api.myjson.com/bins/260yg")! 
    let urlRequest: NSMutableURLRequest = NSMutableURLRequest(URL: requestURL) 
    let session = NSURLSession.sharedSession() 
    let task = session.dataTaskWithRequest(urlRequest) { 
     (data, response, error) -> Void in 
     //print(NSString(data:data!,encoding:NSUTF8StringEncoding)) 
     do{ 
      let json = try NSJSONSerialization.JSONObjectWithData(data!, options:.AllowFragments) 
      if let users = json["userid"] as? NSArray { 
       for user in users { 
        if let usersDictionary = user as? NSDictionary{ 
         let newUser = User(jsonData: usersDictionary) 
         self.usersArray.append(newUser) 
         print(newUser.description) 
        } 
       } 
       dispatch_async(dispatch_get_main_queue()) { 
        self.dataIsLoading = false 
        self.tableView.reloadSections(NSIndexSet(index: 0), withRowAnimation: .Right) 

       } 
      } 
      else { 
       print("nil") 
      } 
     } 
     catch { 
      print("Error with Json: \(error)") 
     } 
    } 

    task.resume() 
} 

func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int { 
    if dataIsLoading { 
     return 1 
    } 

    return usersArray.count 
} 

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell { 

    if dataIsLoading { 
     if let cell = tableView.dequeueReusableCellWithIdentifier("CellWithActivityIndicator") { 
      return cell 
     } 
    } else { 
     if let cell = tableView.dequeueReusableCellWithIdentifier("Cell") { 

      if let userName = usersArray[indexPath.row].name { 
       cell.textLabel!.text = userName 
      } 

      if let userEmail = usersArray[indexPath.row].email { 
       cell.detailTextLabel?.text = userEmail 
      } 

      return cell 
     } 
    } 
    return UITableViewCell() 
} 
} 

User.swift

import Foundation 

class User { 

var email: String? 
var id: String? 
var legalName: String? 
var name: String? 
var originalEmail: String? 
var status: String? 

init (jsonData: NSDictionary) { 

    // NSLog("\(jsonData)") 

    if let value = jsonData["email"] as? String{ 
     self.email = value 
    } 

    email = getStringFromDictionary(jsonData, key: "email") 
    id = getStringFromDictionary(jsonData, key: "id") 
    legalName = getStringFromDictionary(jsonData, key: "legalName") 
    name = getStringFromDictionary(jsonData, key: "name") 
    originalEmail = getStringFromDictionary(jsonData, key: "originalEmail") 
    status = getStringFromDictionary(jsonData, key: "status") 
} 

private func getStringFromDictionary(jsonData: NSDictionary, key: String) -> String? { 
    if let value = jsonData[key] as? String { 
     return value 
    } else { 
     return nil 
    } 
} 

var description: String { 
    get { 
     var _description = "" 

     if let email = self.email { 
      _description += "email:    \(email)\n" 
     } 

     if let id = self.id { 
      _description += "id:    \(id)\n" 
     } 

     if let legalName = self.legalName { 
      _description += "legalName:   \(legalName)\n" 
     } 

     if let name = self.name { 
      _description += "name:    \(name)\n" 
     } 

     if let originalEmail = self.originalEmail { 
      _description += "originalEmail:  \(originalEmail)\n" 
     } 

     if let status = self.status { 
      _description += "status:   \(status)\n" 
     } 

     return _description 
    } 
} 
} 

Main.storyboard

<?xml version="1.0" encoding="UTF-8" standalone="no"?> 
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10117" systemVersion="15G31" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r"> 
<dependencies> 
    <deployment identifier="iOS"/> 
    <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/> 
</dependencies> 
<scenes> 
    <!--View Controller--> 
    <scene sceneID="tne-QT-ifu"> 
     <objects> 
      <viewController id="BYZ-38-t0r" customClass="ViewController" customModule="stackoverflow_39265393" customModuleProvider="target" sceneMemberID="viewController"> 
       <layoutGuides> 
        <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/> 
        <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/> 
       </layoutGuides> 
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        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/> 
        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/> 
        <subviews> 
         <tableView clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="prototypes" style="plain" separatorStyle="default" rowHeight="44" sectionHeaderHeight="28" sectionFooterHeight="28" translatesAutoresizingMaskIntoConstraints="NO" id="wiD-eI-g2J"> 
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          <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/> 
          <prototypes> 
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             <rect key="frame" x="0.0" y="0.0" width="600" height="43"/> 
             <autoresizingMask key="autoresizingMask"/> 
             <subviews> 
              <label opaque="NO" multipleTouchEnabled="YES" contentMode="left" text="Title" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" id="Cmd-qa-ocs"> 
               <rect key="frame" x="15" y="5" width="32" height="20"/> 
               <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/> 
               <fontDescription key="fontDescription" type="system" pointSize="16"/> 
               <color key="textColor" cocoaTouchSystemColor="darkTextColor"/> 
               <nil key="highlightedColor"/> 
              </label> 
              <label opaque="NO" multipleTouchEnabled="YES" contentMode="left" text="Subtitle" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" id="HrM-h8-4qX"> 
               <rect key="frame" x="15" y="25" width="41" height="14"/> 
               <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/> 
               <fontDescription key="fontDescription" type="system" pointSize="11"/> 
               <color key="textColor" cocoaTouchSystemColor="darkTextColor"/> 
               <nil key="highlightedColor"/> 
              </label> 
             </subviews> 
            </tableViewCellContentView> 
           </tableViewCell> 
           <tableViewCell clipsSubviews="YES" contentMode="scaleToFill" selectionStyle="default" indentationWidth="10" reuseIdentifier="CellWithActivityIndicator" id="yH2-KE-eBt"> 
            <rect key="frame" x="0.0" y="72" width="600" height="44"/> 
            <autoresizingMask key="autoresizingMask"/> 
            <tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" tableViewCell="yH2-KE-eBt" id="EfS-TK-7UW"> 
             <rect key="frame" x="0.0" y="0.0" width="600" height="43"/> 
             <autoresizingMask key="autoresizingMask"/> 
             <subviews> 
              <activityIndicatorView opaque="NO" contentMode="scaleToFill" horizontalHuggingPriority="750" verticalHuggingPriority="750" animating="YES" style="gray" translatesAutoresizingMaskIntoConstraints="NO" id="0B4-ch-yMB"> 
               <rect key="frame" x="290" y="12" width="20" height="20"/> 
               <color key="color" red="0.57687498029999995" green="0.69275407970000002" blue="1" alpha="1" colorSpace="calibratedRGB"/> 
              </activityIndicatorView> 
             </subviews> 
             <constraints> 
              <constraint firstItem="0B4-ch-yMB" firstAttribute="centerY" secondItem="EfS-TK-7UW" secondAttribute="centerY" id="90S-0E-56m"/> 
              <constraint firstItem="0B4-ch-yMB" firstAttribute="centerX" secondItem="EfS-TK-7UW" secondAttribute="centerX" id="nZM-Fl-Kcf"/> 
             </constraints> 
            </tableViewCellContentView> 
           </tableViewCell> 
          </prototypes> 
         </tableView> 
        </subviews> 
        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/> 
        <constraints> 
         <constraint firstItem="wiD-eI-g2J" firstAttribute="bottom" secondItem="wfy-db-euE" secondAttribute="top" id="Ab4-X2-fLx"/> 
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         <constraint firstItem="wiD-eI-g2J" firstAttribute="top" secondItem="y3c-jy-aDJ" secondAttribute="bottom" constant="8" symbolic="YES" id="Sbi-vj-app"/> 
         <constraint firstAttribute="trailing" secondItem="wiD-eI-g2J" secondAttribute="trailing" id="jtQ-Jz-Crb"/> 
        </constraints> 
       </view> 
       <connections> 
        <outlet property="tableView" destination="wiD-eI-g2J" id="ev1-pJ-OzP"/> 
       </connections> 
      </viewController> 
      <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/> 
     </objects> 
     <point key="canvasLocation" x="664" y="467"/> 
    </scene> 
</scenes> 
</document>