小编use*_*579的帖子

我在Xcode 6 beta中试用了苹果的新语言swift.我正在尝试以编程方式在按下表格视图单元格时切换视图,尽管它只是拉出一个空白的黑屏.在我的代码中,我评论了那些不起作用的东西.他们只会让iOS模拟器崩溃.我的代码:

 // ViewController.swift 
 // Step-By-Step Tip Calculator  
 // Created by Dani Smith on 6/17/14. 
 // Copyright (c) 2014 Dani Smith Productions. All rights reserved.

import UIKit
var billTotalPostTax = 0
class BillInfoViewController: UIViewController {

//outlets
@IBOutlet var totalTextField: UITextField
@IBOutlet var taxPctLabel: UILabel
@IBOutlet var resultsTextView: UITextView
@IBOutlet var taxPctTextField : UITextField

//variables
var billTotalVar = ""
var taxPctVar = ""

//actions
override func viewDidLoad() {
    super.viewDidLoad()
    refreshUI()
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any …