如此接近实际让这个应用程序移动。还有一个问题。现在,我的应用程序将运行,当下一个视图控制器试图显示时它会给我一个错误。我用一个引用和一个作者来展示一个ViewController。我得到这个错误线程1:EXC_BAD_INSTRUCTION(code = EXC_1386_INVOP,subcode = 0x0)
Thread 1: EXC_BAD_INSTRUCTION (code=EXC_1386_INVOP,subcode=0x0)
输出如下:
fatal error: unexpectedly found nil while unwrapping an Optional
这是错误的代码:
import Foundation
import UIKit
import Social
class businessQuote: UIViewController {
//============================//
//********** Outlets *********//
//============================//
let utility = Utility()
@IBOutlet weak var quoteDisplay: UILabel!
@IBOutlet weak var authorDisplay: UILabel!
//GET BACK TO THIS
//============================//
//********** General *********//
//============================//
let date = NSDate()
var Author: String = ""
var Quote: String = ""
override func viewDidLoad() {
super.viewDidLoad()
// Generates Random Number
func randomNumber(arrayLength: Int) -> Int {
let unsignedArrayCount = UInt32(arrayLength)
let unsignedRandomNumber = arc4random_uniform(unsignedArrayCount)
let randomNumber = Int(unsignedRandomNumber)
return randomNumber
}
// Importing Quotes plist File
let businessQuote = ImportList(FileName: "BusinessList")
// Selects Quote
let chosenQuote: String = businessQuote.array[randomNumber(businessQuote
.count())] as! String
let chosenAuthor = ((businessQuote.dict[chosenQuote]))! as String //This Is Where the error is
// Assigns Quote & Author to IBOutlet
Author = chosenAuthor
Quote = chosenQuote
quoteDisplay.text = Quote
authorDisplay.text = Author.uppercaseString
}
}
预先感谢您!
您的词典元素为nil –