ios - 在 iOS swift 中查询使用我的应用程序的用户(解析)

Question

在我的应用程序中，用户存储他们的电话号码。使用电话号码，我进行了一个查询，将地址簿中的电话号码与数据库中存储的电话号码(解析后端)进行比较，以匹配使用该应用程序的用户。问题是我的表没有返回任何数据。我做了基本配置来请求地址簿和表委托(delegate)功能。这是我的查询功能:

import UIKit
import AddressBook
import Parse

class mainContactViewController: UIViewController,UITableViewDataSource, UITableViewDelegate {


    @IBOutlet weak var namesTableView: UITableView!


    var addressBook: ABAddressBook!
    var names:[String]?

    func createAddressBook() {

        var error: Unmanaged<CFErrorRef>?

        addressBook = ABAddressBookCreateWithOptions(nil, &error).takeRetainedValue()

    }

    override func viewDidLoad() {
        super.viewDidLoad()

        self.namesTableView.delegate = self
        self.namesTableView.dataSource = self

        accessAddressBook()

        self.namesTableView.allowsMultipleSelection = true

    }

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

    func accessAddressBook () {
        switch ABAddressBookGetAuthorizationStatus(){
        case .Authorized:
            println("Already authorized")
            createAddressBook()
            beginContactSearch()
            /* Access the address book */
        case .Denied:
            println("Denied access to address book")

        case .NotDetermined:
            createAddressBook()
            if let theBook: ABAddressBookRef = addressBook{
                ABAddressBookRequestAccessWithCompletion(theBook,
                    {(granted: Bool, error: CFError!) in

                        if granted{
                            println("Access granted")
                        } else {
                            println("Access not granted")
                        }

                })
            }

        case .Restricted:
            println("Access restricted")

        default:
            println("Other Problem")
            }
        }


func beginContactSearch(){
   let people = ABAddressBookCopyArrayOfAllPeople(addressBook).takeRetainedValue() as   NSArray as [ABRecord]

            for person in people {
                // Name
                let name = ABRecordCopyCompositeName(person).takeRetainedValue()

                // Phones
                let phones: ABMultiValueRef = ABRecordCopyValue(person, kABPersonPhoneProperty).takeRetainedValue()
                names = Array()
                for (var i = 0; i < ABMultiValueGetCount(phones); i++) {
                    let phones: String = ABMultiValueCopyValueAtIndex(phones, i).takeRetainedValue() as String
                    var friendsquery = PFQuery(className:"_Users")
                        friendsquery.whereKey("phoneNumber" , equalTo:phones)
                        friendsquery.findObjectsInBackgroundWithBlock { (objects: [AnyObject]!, error: NSError!) -> Void in
                            if error == nil{
                              //  if let objects = objects as? [String] {
                                    for object in objects {
                                        var phoneslist = object as NSString
                                       self.names!.append(phoneslist)

                                    }
                                //}
                            }
                        }
                    }
                }
                    self.namesTableView.reloadData()
            }

 func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return self.names?.count ?? 0
    }

    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let cell = namesTableView.dequeueReusableCellWithIdentifier("Tablecell") as UITableViewCell

        cell.textLabel!.text = names![indexPath.row]
        cell.textLabel?.textColor = UIColor.whiteColor()

        return cell
    }


func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    tableView.deselectRowAtIndexPath(indexPath, animated: true)
}
}

Answer 1

抱歉，我需要猜测错误是什么，因为如果没有项目就很难找到它......:-)

尝试将文件中的代码与此行下的代码交换

friendsquery.findObjectsInBackgroundWithBlock { (objects: [AnyObject]?, error: NSError?) -> Void in
   if error == nil{
      for object in objects! {
         if let phoneslist: NSString = object as? NSString {
            self.names!.append(phoneslist)
         }
      }
   }
}

更新

好吧，我的第一个猜测是正确的:-)所以让我尝试另一个......

在此代码中:

if let phoneslist: NSString = object as? NSString {
   self.names!.append(phoneslist)
}

你尝试将对象转换为 NSString...好吧，我不知道 Parse，也不知道它们的对象是如何构建的，但你需要做这样的事情...

if let phoneslist: PFObject = object as? PFObject {
   if let nameFromList: NSString = phoneslist["name"] as? NSString {
       self.names!.append(nameFromList)
   }
}

我猜 PFObject 是一个包含多个值的对象...所以你还必须通过它的键来定义你想要的值...

所以你需要 NSLog 对象来获取它的键，然后将代码更改为我上面的新代码就完成了