Question

转换为Swift2.2后，我的Swift代码无效。我的代码：

Swift 1.0代码：

Class func getPath(filename:  String ) -> String {
return NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory,NSSearchPathDomainMask.UserDomainMask,true)[0].stringByAppendingComponent(filename)
}

错误：在NSURL上使用URLByAppendingPathComponent。

Answer 1

使用与URL相关的API和现代方式获取文档目录：

在Swift 2中，类函数标有static

static func getPath(filename:  String ) -> String {
  // try! is safe
  let documentDirectory = try! NSFileManager.defaultManager().URLForDirectory(.DocumentDirectory,
                                             inDomain: .UserDomainMask,
                                             appropriateForURL: nil,
                                             create: true)
  return documentDirectory.URLByAppendingPathComponent(filename).path!
}

或完全基于网址：

static func getURL(filename:  String ) -> NSURL {
   let documentDirectory = try! NSFileManager.defaultManager().URLForDirectory(.DocumentDirectory,
                                           inDomain: .UserDomainMask,
                                           appropriateForURL: nil,
                                           create: true)
   return documentDirectory.URLByAppendingPathComponent(filename)
}

Answer 2

Class func getPath(filename:  String ) -> String {
    let basePath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0]
    let baseURL = NSURL(fileURLWithPath: basePath)
    let fullURL = baseURL.URLByAppendingPathComponent(filename)
    return fullURL.path!
}

要为此StringByAppendingPathComponent更改什么

2 个答案: