在Swift中使用未解析的标识符'indexPath'

debugcn 发表于 Dev

偷自行车

您好，我正在创建变量URL，但在此行出现错误。

这是我的完整代码。

“在Swift中使用未解析的标识符'indexPath'”

import UIKit
import MediaPlayer

class DetailViewController: UIViewController{

    var moviePlayer:MPMoviePlayerController!
    var color = UIColor.whiteColor()
    var name = NSString()
    var arrayOfPrograms: NSArray = []

    var url = NSString()

    override func viewDidLoad() {
        super.viewDidLoad()

        self.navigationController?.navigationBar.titleTextAttributes =
            [NSFontAttributeName: UIFont(name: "HelveticaNeue-Light", size: 20)!,
                NSForegroundColorAttributeName: UIColor.whiteColor()]
        self.navigationController?.navigationBar.tintColor = color
        self.navigationItem.title = "TV JOJ"

        var url = NSURL(string: (self.arrayOfPrograms.objectAtIndex(indexPath).Program).url)
        moviePlayer = MPMoviePlayerController(contentURL: url)

        moviePlayer.view.frame = CGRect(x: 0, y: 0, width: self.view.frame.size.width, height: self.view.frame.size.height)
        moviePlayer.view.sizeToFit()
        self.view.addSubview(moviePlayer.view)
        moviePlayer.fullscreen = true
        moviePlayer.controlStyle = MPMovieControlStyle.Embedded
    }

    override func supportedInterfaceOrientations() -> Int {
        return Int(UIInterfaceOrientationMask.Portrait.rawValue)
    }

}

对不起，我是初学者..

细胞

var arrayOfPrograms: NSArray = []
arrayOfPrograms = [Program(name: "Markíza", url: "http://1.com")]

这就是我试图通过segue传递数据的方式

   override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
        var indexPath: NSIndexPath = self.tableView?.indexPathForSelectedRow() as NSIndexPath!
        var destinationViewController: DetailViewController
        (segue.destinationViewController as DetailViewController).url = (self.arrayOfPrograms.objectAtIndex(indexPath.row) as Program).url

我希望该网址将为每个命名的单元格打开一个不同的视频。arraysOfPrograms是单元格。

乔尔·贝尔

扩展Mundi的答案-这些台词-

    var url = NSURL(string:(self.arrayOfPrograms.objectAtIndex(indexPath).Program).url)
    moviePlayer = MPMoviePlayerController(contentURL: url)

可以这样写，这更加清楚了-

    var url = self.arrayOfPrograms.objectAtIndex(indexPath).Program.url;
    moviePlayer = MPMoviePlayerController(contentURL: url);

主要问题是变量“ indexPath”在程序中不存在，因此您不会告诉程序哪个索引要从arrayOfPrograms数组中删除。

就像Mudi所说的那样，即使定义了“ indexPath”，NSIndexPath也不是您要在其中传递的类型，但您仍要在该indexPath的行中传递。所以看起来像这样

    // this indexPath probably isn't what you want. Its just an example to illustrate my point.
    var indexPath = NSIndexPath(forRow: 1, inSection: 0)

    // getting the row (1) from the variable indexPath
    var url = self.arrayOfPrograms.objectAtIndex(indexPath.row).Program.url
    moviePlayer = MPMoviePlayerController(contentURL: url)

您到底想做什么？您是否要遍历arrayOfPrograms并为该数组中的每个项目创建一个电影播放器？还是应该在表格视图中以及当用户单击特定行时。回答这些特定问题将帮助您弄清楚“ indexPath”的来源。

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