Question

我制作了一个应用程序Single Application。我放了一个名为Dim LC1 As Long, ColNum1 As Long Application.ScreenUpdating = False For ColNum1 = 8 To Cells(1, Columns.Count).End(xlToLeft).Column For LC1 = 2 To Cells(Rows.Count, ColNum1).End(xlUp).Row If Val(CStr(Cells(LC1, ColNum1))) < 0 Then Cells(LC1, ColNum1) = 0 Next LC1 Next ColNum1 Application.ScreenUpdating = True的按钮，一个名为CountUpButton的标签和另一个按钮CountLabel。 ResetButton的功能是按下按钮时，CountUpButton必须更改CountLabel，按下+ 1时，ResetButton必须转为{{1} }}。但问题是每当我重启我的iPhone或App时，CountLabel都会变回0.它应该保存0，因此只有在按下CountLabel时才需要更改。 / p>

此功能的代码是：

CountLabel

我用于保存“CountLabel”的代码是：

ResetButton

Answer 1

import UIKit

class ViewController: UIViewController {
    @IBOutlet weak var counterLabel: UILabel!
    var counter: Int {
        return NSUserDefaults().integerForKey("counter")
    }
    override func viewDidLoad() {
        super.viewDidLoad()
        counterLabel.text = "\(counter)"
    }
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }
    @IBAction func countUp(sender: AnyObject) {
        NSUserDefaults().setInteger(counter+1, forKey: "counter")
        counterLabel.text = "\(counter)"

    }
    @IBAction func resetCounter(sender: AnyObject) {
         NSUserDefaults().removeObjectForKey("counter")
        counterLabel.text = "\(counter)"
    }
}

即使重启iPhone，如何保存得分？

1 个答案: