在简单反射测试游戏应用程序中使用NSDataStorage

I'm trying to store an array of numbers in NSUserDataStorage..what am I doing wrong? Thanks. import UIKit

我想在NSUserDataStorage中存储一个数字数组。我做错了什么?谢谢。进口UIKit

class ViewController: UIViewController {
var arr = [Int]()
var timer = NSTimer()
var countdowntimer = NSTimer()
var count = 0
var countdown = Int(arc4random_uniform(4000) + 1000)
var highscore:Int!


@IBOutlet weak var beginButton: UIButton!





@IBOutlet weak var startButton: UILabel!
@IBOutlet weak var highScoreButton: UILabel!
@IBOutlet weak var timerLabel: UILabel!
@IBOutlet weak var backgroundImage: UIImageView!

func updateTime() {
    countdown = countdown - 1
    if countdown <= 0 {
        startButton.textColor = UIColor.blackColor()
        startButton.text = "Tap Now!"
        countdowntimer.invalidate()
        backgroundImage.image = UIImage(named: "red")
        count = 0
        Timer()
    }
}

func Timer() {
    timer = NSTimer.scheduledTimerWithTimeInterval(0.001, target:self, selector:Selector("reflexTest"), userInfo:nil, repeats: true)

}

func reflexTest() {
    count = count + 1
    timerLabel.text = "\(count) ms"
}




@IBAction func beginTapped(sender: AnyObject) {
    if startButton.text == "Tap when the Color Changes" {
        startButton.text = "You tapped too early!"
        countdowntimer.invalidate()
        countdown = Int(arc4random_uniform(4000) + 1000)
    } else {
    if count == 0 {
    countdowntimer = NSTimer.scheduledTimerWithTimeInterval(0.001, target: self, selector: Selector("updateTime"), userInfo: nil, repeats: true)
    startButton.text = "Tap when the Color Changes"
        countdown = Int(arc4random_uniform(4000) + 1000)
        timerLabel.text = "\(count) ms"
    } else {
        timer.invalidate()
        backgroundImage.image = UIImage(named: "green")
        startButton.text = "Tap to Begin"
        arr.append(count)
        count = 0
        highscore = minElement(arr)
        highScoreButton.text = "Best: \(highscore)"
        self.viewDidLoad()
        }

    }

}





override func viewDidLoad() {
    super.viewDidLoad()
    NSUserDefaults.standardUserDefaults().setObject(arr, forKey: "data")
    arr = NSUserDefaults.standardUserDefaults().objectForKey("data") as! [Int]
    println(arr)
            // Do any additional setup after loading the view, typically from a nib.
}

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

}

Im trying to make it so that when the view is loaded, it takes the data from permanent storage, sets the array equal to it, and as the user plays the game, when he clicks the end button, it takes the data, and stores it back in the array, and then takes that into permanent storage. How may I do this without using Core Data?

我试图让它这样,当加载视图,需要永久存储的数据,设置数组等于它,用户玩游戏,当他点击结束按钮,需要的数据,并将其存储在数组,然后将永久存储。我如何在不使用核心数据的情况下做到这一点?

1 个解决方案

#1

You've almost got the idea with NSUserDefaults—just read and write as needed. I always like to abstract that away into methods (or even separate objects) that have an intuitive interface like save and load.

你对nsuserdefault有个想法——只要根据需要读和写就可以了。我总是喜欢将它抽象为方法(甚至是单独的对象)，它们具有像save和load这样的直观接口。

If your data gets more complex, you may want to look into writing data to a file on the device with NSKeyedArchiver and NSCoding in order to serialize and deserialize easily.

如果您的数据变得更加复杂，您可能想要在使用NSKeyedArchiver和NSCoding的设备上的文件中查找写入数据，以便能够轻松地序列化和反序列化。

See this NSHipster Article for more info on that.

有关这方面的更多信息，请参阅本文。

class ViewController: UIViewController {
    var arr = [Int]()

    let kDefaultsKey = "com.mycompany.myapp.numbers"

    override func viewDidLoad() {
        super.viewDidLoad()
        self.loadDefaults()
    }

    func randomNumner() -> Int {
        return Int(arc4random() % 100)
    }

    @IBAction func buttonTapped(sender: AnyObject) {
        arr.append( randomNumber() )
        self.saveDfeaults()
    }

    func loadDefaults() {
        if let savedArray = NSUserDefaults.standardUserDefaults().objectForKey( kDefaultsKey ) as? [Int] {
            self.arr = savedArray
        }
    }

    func saveDfeaults() {
        NSUserDefaults.standardUserDefaults().setObject( self.arr, forKey: kDefaultsKey )
    }
}

#1