iOS9 Swift文件使用NSURL创建NSFileManager.createDirectoryAtPath

问题描述

在iOS9之前，我们已经创建了一个这样的目录

Before iOS9, we had created a directory like so

let documentsPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as! String
let logsPath = documentsPath.stringByAppendingPathComponent("logs")
let errorPointer = NSErrorPointer()
NSFileManager.defaultManager().createDirectoryAtPath(logsPath, withIntermediateDirectories: true, attributes: nil, error: errorPointer)

但是在iOS9中，他们删除了String.stringByAppendingPathComponent.自动转换工具将我们对String的使用替换为NSURL. createDirectoryAtPath()需要一个字符串，因此我需要将NSURL转换为字符串.我们像这样使用absolutePath :(针对iOS9的更新)

But with iOS9 they removed String.stringByAppendingPathComponent. The auto convert tool replaced our use of String with NSURL. createDirectoryAtPath() takes a string so I need to convert the NSURL to a string. We used absolutePath like so: (update for iOS9)

let documentsPath = NSURL(fileURLWithPath: NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0])
let logsPath = documentsPath.URLByAppendingPathComponent("logs")
do {
    try NSFileManager.defaultManager().createDirectoryAtPath(logsPath.absoluteString, withIntermediateDirectories: true, attributes: nil)
} catch let error as NSError {
    NSLog("Unable to create directory \(error.debugDescription)")
}

但是我遇到以下错误:

推荐答案

我想出了这一点. createDirectoryAtPath()无法处理带有"file://"前缀的路径.要获取不带前缀的路径，必须使用path()或relativePath().

I figured this one out. createDirectoryAtPath() is unable to process a path with the "file://" prefix. To get a path without the prefix you must use path() or relativePath().

let documentsPath = NSURL(fileURLWithPath: NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0])
let logsPath = documentsPath.URLByAppendingPathComponent("logs")
do {
    try NSFileManager.defaultManager().createDirectoryAtPath(logsPath.path!, withIntermediateDirectories: true, attributes: nil)
} catch let error as NSError {
    NSLog("Unable to create directory \(error.debugDescription)")
}

不正确的路径(注意文件://):

Incorrect path (notice file://):

file:///var/mobile/Containers/Data/Application/F2EF2D4F-94AF-4BF2-AF9E-D0ECBC8637E7/Documents/logs/

file:///var/mobile/Containers/Data/Application/F2EF2D4F-94AF-4BF2-AF9E-D0ECBC8637E7/Documents/logs/

正确的路径:

/var/mobile/容器/数据/应用程序/F2EF2D4F-94AF-4BF2-AF9E-D0ECBC8637E7/Documents/logs/

/var/mobile/Containers/Data/Application/F2EF2D4F-94AF-4BF2-AF9E-D0ECBC8637E7/Documents/logs/

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