Question

我想从plist文件中读取整数值。我有以下代码：

let path = NSBundle.mainBundle().pathForResource("savedState", ofType: "plist")
let dict = NSDictionary(contentsOfFile: path!)
let players: AnyObject = String(dict.valueForKey("players") as NSString)
let level: AnyObject = String(dict.valueForKey("level") as NSString)
let numPlayers = Int(players as NSNumber)
let playLevel = Int(level as NSNumber)

让玩家：让级别：崩溃我的应用程序。我知道这应该很简单 - 我只是无法弄清楚如何去做。

Answer 1

你可能正在寻找这样的东西：

let path = NSBundle.mainBundle().pathForResource("savedState", ofType: "plist")
let dict = NSDictionary(contentsOfFile: path!)
let players = dict.valueForKey("players") as? String
let level = dict.valueForKey("level") as? String
let numPlayers = players != nil ? players!.toInt() : 0
let playLevel = level != nil ? level!.toInt() : 0

它试图从plist中读取玩家和等级作为可选字符串，然后如果它们不是nil，则将numPlayers和playLevel设置为其Int值。如果它们是nil numPlayers并且playLevel设置为0.虽然如果你的plist值是整数，为什么不把它们作为Ints读出来？

let players = dict.valueForKey("players") as? Int
let level = dict.valueForKey("level") as? Int

iOS 8 Swift阅读Plist

1 个答案: