Question

有人可以告诉我，我做错了什么吗？ 可能很多因为我是新手，但期待解决这个问题！

我正在使用Koloda libray（https://github.com/Yalantis/Koloda/tree/networking_example）将一个对象数组提取到卡中，以便每张卡从我的数据库中获取一行。我已经看到网络例子与Alamofire并尝试我自己的代码使用相同的例子实现Parse。它从Parse获取对象，但我无法将它们显示在卡片中。很奇怪，实际上我没有错误，控制台显示“成功检索了5个对象”，但这只是loadData（）函数。

我将从笔尖显示很多文字！

我基本上想要实现的目标是什么：我有（MyView.xib，MyView.swift）提供标签。（我想要的是从数组中检索文本到xib中的标签）

我正在检索对象，但我没有成功将它们显示到卡中：

Successfully retrieved 5 posts.
Optional("EvUICgRQ6E")
Optional("5kC0FLKQON")
Optional("1Uyxb2M1Et")
Optional("aeJpRCG7Qn")
Optional("GDmGh3IULm")

有些错误： 如果我返回“numberOfCards”---我收到此错误：

fatal error: Array index out of range
(lldb)

如果我返回：“返回UInt（self.data.count）” 我没有收到任何错误，但卡片根本没有显示。

我是一个新手，但指出了一个好的方向，我将能够完成它。

这是我的ViewController.swift代码：

    //
//  ViewController.swift
//  TinderCardsSwift
//
//  Created by Eugene Andreyev on 4/23/15.
//  Copyright (c) 2015 Eugene Andreyev. All rights reserved.
//

import UIKit
import Koloda
import pop
import Parse
import ParseUI

private var numberOfCards: UInt = 5

class ViewController: UIViewController, KolodaViewDataSource, KolodaViewDelegate {

    @IBOutlet weak var kolodaView: KolodaView!

    @IBOutlet weak var menuLeft: UIBarButtonItem!
    @IBOutlet weak var searchRight: UIBarButtonItem!

    var cardsCollection: [MyView] = []

    var labelText3 = ""
    var labelText4 = ""

    var currentObject:PFObject?

    override func viewDidLoad() {
        super.viewDidLoad()

        kolodaView.dataSource = self
        kolodaView.delegate = self

        menuLeft.target = self.revealViewController()
        menuLeft.action = Selector("revealToggle:")

        searchRight.target = self.revealViewController()
        searchRight.action = Selector("rightRevealToggle:")

        self.modalTransitionStyle = UIModalTransitionStyle.FlipHorizontal

        loadData()

    }

    required init(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)!

    }


    //MARK: Geting Data From Parse and displaying 5 posts with a print result - WORKING
    func loadData (){

        if (!cardsCollection.isEmpty) {
            self.kolodaView.reloadData()
            return
        }

        let query = PFQuery(className:"Countries")
        query.orderByAscending("nameEnglish")
        query.findObjectsInBackgroundWithBlock {
            (objects:[PFObject]?, error:NSError?) -> Void in
            if error == nil {
                // The find succeeded.
                print("Successfully retrieved \(objects!.count) posts.")
                // Do something with the found objects
                if let objects = objects {
                    for object in objects {
                        let view = NSBundle.mainBundle().loadNibNamed("MyView", owner: self, options: nil)[0] as! MyView
                        view.label1.text = object["nameEnglish"] as? String
                        view.label2.text = object["capital"] as? String
                        self.cardsCollection += [view]
                        print(object.objectId)

                    }
                }
            } else {
                // Log details of the failure
                print("Error: \(error!) \(error!.userInfo)")
            }
        }
        self.kolodaView.reloadData()
        return
    }

    /*func printData () {

        let dataView = NSBundle.mainBundle().loadNibNamed("MyView",
            owner: self, options: nil)[0] as? MyView
        if let nameEnglish = object?["nameEnglish"] as? String {

            let lbl2 = dataView?.label1 as UILabel!
            lbl2!.text = nameEnglish




        }

        //return printData()
    }*/
    @IBAction func logOut4(sender: AnyObject) {

        // Send a request to log out a user
        PFUser.logOut()

        dispatch_async(dispatch_get_main_queue(), { () -> Void in
            let viewController:UIViewController = UIStoryboard(name: "SlideMain", bundle: nil).instantiateViewControllerWithIdentifier("Login_Platform")
            self.presentViewController(viewController, animated: true, completion: nil)


        })

    }

    override func viewWillAppear(animated: Bool) {

        if (PFUser.currentUser() == nil) {
            dispatch_async(dispatch_get_main_queue(), { () -> Void in

                let viewController:UIViewController = UIStoryboard(name: "SlideMain", bundle: nil).instantiateViewControllerWithIdentifier("Login_Platform")
                self.presentViewController(viewController, animated: true, completion: nil)



            })
        }

    }


    //MARK: IBActions
    @IBAction func leftButtonTapped() {
        kolodaView?.swipe(SwipeResultDirection.Left)
    }

    @IBAction func rightButtonTapped() {
        kolodaView?.swipe(SwipeResultDirection.Right)
    }

    @IBAction func undoButtonTapped() {
        kolodaView?.revertAction()
    }

    //MARK: KolodaViewDataSource
    func kolodaNumberOfCards(koloda: KolodaView) -> UInt {
       return numberOfCards
        //return UInt (self.data.count)
        //return UInt(cardsCollection.count)

    }

    func kolodaViewForCardAtIndex(koloda: KolodaView, index: UInt) -> UIView {
        //return UIImageView(image: UIImage(named: "Card_like_\(index + 1)"))
        return (NSBundle.mainBundle().loadNibNamed("MyView",
        owner: self, options: nil)[0] as? MyView)!
        //let view = cardsCollection[Int(index)]
        //return view


       /* let dataView = NSBundle.mainBundle().loadNibNamed("MyView",
            owner: self, options: nil)[0] as? MyView
        let parseData = data[Int(index)]
        dataView?.label1?.text = parseData.labelText
        dataView?.label2?.text = parseData.label2Text

        return dataView!*/


    }
    func kolodaViewForCardOverlayAtIndex(koloda: KolodaView, index: UInt) -> OverlayView? {
        return NSBundle.mainBundle().loadNibNamed("OverlayView",
            owner: self, options: nil)[0] as? OverlayView
    }

    //MARK: KolodaViewDelegate

    func kolodaDidSwipedCardAtIndex(koloda: KolodaView, index: UInt, direction: SwipeResultDirection) {
        //Example: loading more cards
        if index >= 3 {
            numberOfCards = 5
            kolodaView.reloadData()
        }
    }

    func kolodaDidRunOutOfCards(koloda: KolodaView) {
        //Example: reloading
        kolodaView.resetCurrentCardNumber()
        loadData()
    }

    func kolodaDidSelectCardAtIndex(koloda: KolodaView, index: UInt) {
        UIApplication.sharedApplication().openURL(NSURL(string: "http://yalantis.com/")!)
    }

    func kolodaShouldApplyAppearAnimation(koloda: KolodaView) -> Bool {
        return true
    }

    func kolodaShouldMoveBackgroundCard(koloda: KolodaView) -> Bool {
        return true
    }

    func kolodaShouldTransparentizeNextCard(koloda: KolodaView) -> Bool {
        return true
    }

    func kolodaBackgroundCardAnimation(koloda: KolodaView) -> POPPropertyAnimation? {
        return nil
    }

}

这是MyView.swift（我定义了所有内容）

  //
//  MyView.swift
//
//
//  Created by Viorel Petrisor on 12/29/15.
//  Copyright © 2015 Viorel Petrisor. All rights reserved.
//

import UIKit

class MyView: UIView {

    @IBOutlet var label1: UILabel!
    @IBOutlet var label2: UILabel!
    /*
    // Only override drawRect: if you perform custom drawing.
    // An empty implementation adversely affects performance during animation.
    override func drawRect(rect: CGRect) {
        // Drawing code
    }
    */

}

MyView拥有自己的笔尖。我的项目也会放一些照片：

KolodaView in my Main StoryBoard

有人知道如何使这项工作？我现在已经挣扎了10天，仍然没有让它发挥作用。

我非常感谢一些帮助，提示！

更新：我现在正在将此函数用于loadData（）

func loadData (){

        if (!cardsCollection.isEmpty) {
            self.kolodaView.reloadData()
            return
        }

        let query = PFQuery(className:"Countries")
        query.orderByAscending("nameEnglish")
        query.findObjectsInBackgroundWithBlock {
            (objects:[PFObject]?, error:NSError?) -> Void in
            if error == nil {
                // The find succeeded.
                print("Successfully retrieved \(objects!.count) posts.")
                // Do something with the found objects
                if let objects = objects {
                    for object in objects {
                        let view = NSBundle.mainBundle().loadNibNamed("MyView", owner: self, options: nil)[0] as! MyView
                        view.label1.text = object["nameEnglish"] as? String
                        view.label2.text = object["capital"] as? String
                        self.cardsCollection += [view]
                        print(object.objectId)

                    }
                }
            } else {
                // Log details of the failure
                print("Error: \(error!) \(error!.userInfo)")
            }
        }
        self.kolodaView.reloadData()
        return
    }

使用此变量

var cardsCollection: [MyView] = []

Answer 1

你能否在GitHub上添加一个问题？ https://github.com/Yalantis/Koloda/issues 谢谢

Answer 2

我有一个类似的问题，卡无法获取数据。显然，这是我打电话给Bundle的一个问题。正确的Swift 3.0代码如下。

func koloda(_ koloda: KolodaView, viewForCardAt index: Int) -> UIView {

    let bundle = Bundle(for: MyView.self) // This gets the correct bundle for your class, as sometimes you might have many bundles.
    let nib = UINib(nibName: String(describing: MyView.self), bundle: bundle)
    let view = nib.instantiate(withOwner: self, options: nil)[0] as! MyView

    return view
}

在Koloda图书馆解析数据 - 无法在视图上显示

2 个答案: