Question

这是我的代码：

import UIKit

class PlaylistMasterViewController: UIViewController {

@IBOutlet weak var abutton: UIButton!

override func viewDidLoad() {
    super.viewDidLoad()

    abutton.setTitle("Press me!", forState: .Normal)


}

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

override func prepareForSegue(segue: UIStoryboardSegue, sender:     AnyObject?) {
    if segue.identifier ==  "showPlaylistDetailSegue" {
        let playlistDetailController = segue.destinationViewController as! PlaylistDetailViewController

        playlistDetailController.segueLabelText = "Yay!You Pressed"
}


}

我在最后一行收到错误！我的xCode版本是6.3.2 ..我无法克服这一点，因为应用程序总是失败。我在这里遇到两个错误： 1-一行上的连续声明必须用＆＃39;;＆＃39;分隔。 2-预期宣言

提前致谢

Answer 1

您错过了结束括号以关闭课程，我已经通过每次打开和关闭括号时添加注释来证明这一点，例如：

if myVar == 1 { //OPEN: 1
  //do something
} //CLOSE: 1

1只是一种跟踪哪个支架的方法，所以如果你有多个括号（你这样做），你会看到像

这样的东西

//OPEN: 2 and //CLOSE: 2

我已添加下面的代码，显示您的括号何时打开和关闭。

import UIKit

class PlaylistMasterViewController: UIViewController { //OPEN: 1

  @IBOutlet weak var abutton: UIButton!

  override func viewDidLoad() { //OPEN: 2
    super.viewDidLoad()
    abutton.setTitle("Press me!", forState: .Normal)
  } //CLOSE: 2 -- 1 still needs to be closed

  override func didReceiveMemoryWarning() { //OPEN: 3
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
  } //CLOSE: 3 -- 1 still needs to be closed

  override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) { //OPEN: 4
    if segue.identifier ==  "showPlaylistDetailSegue" { //OPEN: 5
      let playlistDetailController = segue.destinationViewController as! PlaylistDetailViewController
      playlistDetailController.segueLabelText = "Yay!You Pressed"
    } //CLOSE: 5 -- 1 & 4 still need to be closed
  } //CLOSE: 4 -- 1 still needs to be closed

// This is where you need to close 1, you're missing the bracket under this comment

} //ADD ME -- CLOSE: 1 -- no brackets to close left

我希望你现在对此更清楚一点。请练习正确缩进代码，这样可以节省大量时间调试这样的简单错误！：）

Answer 2

正如@MartinR指出的那样，你错过了一个大括号。

“Re-indent”菜单项（Editor / Structure / Re-Indent或^ I）可用于轻松自动格式化当前选择，这使得这些问题难以忽略。

快速错误：一行上的连续声明必须用＆＃39;;＆＃39;分隔。

2 个答案: