xcode 如何在swift中从文档目录中获取特定文件的NSURL
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How to get NSURL on specific file from document directory in swift
提问by Alexander Khitev
I getting files from document directory with the help of NSFileManager. I got an array of file names and I can pass them to another controller. Still I want to pass NSURLon specific file from my UITableViewCellas I pass names of these files. My files are mp3. Please help me.
我在NSFileManager. 我得到了一个文件名数组，我可以将它们传递给另一个控制器。当我传递这些文件的名称时，NSURL我仍然想传递我的特定UITableViewCell文件。我的文件是mp3。请帮我。
var listOfMP3Files: Array<String!>? // for Cell data
func fetchFilesFromFolder() {
var fileManager = NSFileManager.defaultManager()
var folderPathURL = fileManager.URLsForDirectory(NSSearchPathDirectory.DocumentDirectory, inDomains: NSSearchPathDomainMask.UserDomainMask)[0] as! NSURL
var documentsContent = fileManager.contentsOfDirectoryAtPath(folderPathURL.path!, error: nil)
println(documentsContent)
if var directoryURLs = fileManager.contentsOfDirectoryAtURL(folderPathURL, includingPropertiesForKeys: nil, options: NSDirectoryEnumerationOptions.SkipsHiddenFiles, error: nil) {
println(directoryURLs)
var mp3Files = directoryURLs.map(){ override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
var playerVC = (segue.destinationViewController as! UINavigationController).topViewController as! PlayMusicViewController
var indexPath = tableView.indexPathForSelectedRow()
var objectForPass = listOfMP3Files![indexPath!.row] // default
//
var path = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)[0] as? String
var getImage = path?.stringByAppendingPathComponent(objectForPass)
var image = UIImage(contentsOfFile: getImage!)
if segue.identifier == "listenMusic" {
playerVC.musicFile = objectForPass
playerVC.end = image
}
}
.lastPathComponent }.filter(){ override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
var playerVC = (segue.destinationViewController as! UINavigationController).topViewController as! PlayMusicViewController
var indexPath = tableView.indexPathForSelectedRow()
var objectForPass = listOfMP3Files![indexPath!.row] // default
//
/* var path = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)[0] as? String
var getImage = path?.stringByAppendingPathComponent(objectForPass)
var image = UIImage(contentsOfFile: getImage!) */
//
var fileM = NSFileManager.defaultManager()
var wayToFile = fileM.URLsForDirectory(NSSearchPathDirectory.DocumentDirectory, inDomains: NSSearchPathDomainMask.UserDomainMask)
var passMusicFileURL: NSURL?
if let documentPath: NSURL = wayToFile.first as? NSURL {
let musicFile = documentPath.URLByAppendingPathComponent(objectForPass)
println(musicFile)
passMusicFileURL = musicFile
}
if segue.identifier == "listenMusic" {
// playerVC.musicFile = objectForPass
playerVC.end = passMusicFileURL
}
}
.pathExtension == "mp3" }
listOfMP3Files = mp3Files
println(mp3Files)
}
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
var playerVC = (segue.destinationViewController as! UINavigationController).topViewController as! AVPlayerVC
var indexPath = tableView.indexPathForSelectedRow()
var objectForPass = listOfMP3Files![indexPath!.row] // default
if segue.identifier == "listenMusic" {
playerVC.object = objectForPass
}
}
UPDATE:
更新：
I updated my code and I can to get files of jpg type. But I don't know how to get mp3 files.
我更新了我的代码，我可以获取 jpg 类型的文件。但我不知道如何获取 mp3 文件。
My updated code
我更新的代码
let name = "aFileName"
var filePath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).first as! String
println("\nfilePath: \(filePath)")
filePath = filePath.stringByAppendingPathComponent(name)
println("\nfilePath: \(filePath)")
var filePathURL = NSURL.fileURLWithPath(filePath)
println("\nfilePathURL: \(filePathURL!)")
UPDATE2I edited my code and I can to pass NSURLon mp3 files and in another UIViewControllerI can play them.
UPDATE2我编辑了我的代码，我可以传递NSURLmp3 文件，在另一个UIViewController我可以播放它们。
Below there is a edited code
下面有一个编辑过的代码
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
var playerVC = (segue.destinationViewController as! UINavigationController).topViewController as! PlayMusicViewController
var indexPath = tableView.indexPathForSelectedRow()
var objectForPass = listOfMP3Files![indexPath!.row] // default
//
/* var path = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)[0] as? String
var getImage = path?.stringByAppendingPathComponent(objectForPass)
var image = UIImage(contentsOfFile: getImage!) */
//
var fileM = NSFileManager.defaultManager()
var wayToFile = fileM.URLsForDirectory(NSSearchPathDirectory.DocumentDirectory, inDomains: NSSearchPathDomainMask.UserDomainMask)
var passMusicFileURL: NSURL?
if let documentPath: NSURL = wayToFile.first as? NSURL {
let musicFile = documentPath.URLByAppendingPathComponent(objectForPass)
println(musicFile)
passMusicFileURL = musicFile
}
if segue.identifier == "listenMusic" {
// playerVC.musicFile = objectForPass
playerVC.end = passMusicFileURL
}
}
回答by zaph
Create the full file URL in a separate intermediate statement and you will find the problem.
在单独的中间语句中创建完整的文件 URL，您将发现问题。
If you do not have independent statements debugging is very hard.
如果没有独立的语句调试是非常困难的。
folderPathURL.pathis incorrect.
folderPathURL.path是不正确的。
First create the entire file path, then create f file URL from it.
首先创建整个文件路径，然后从中创建 f 文件 URL。
Example:
例子：
##代码##Output:
输出：
filePath: /Users/zaph/Library/Developer/CoreSimulator/Devices/264B31F6-3A28-4C75-9205-3558BBF54DED/data/Containers/Data/Application/0048403F-C8DE-4EE7-83CF-6AE7CCBAF090/Documents
filePath: /Users/zaph/Library/Developer/CoreSimulator/Devices/264B31F6-3A28-4C75-9205-3558BBF54DED/data/Containers/Data/Application/0048403F-C8DE-4EE7-83CF-6AE7CCBAF090/Documents/aFileName
filePathURL: file:///Users/zaph/Library/Developer/CoreSimulator/Devices/264B31F6-3A28-4C75-9205-3558BBF54DED/data/Containers/Data/Application/0048403F-C8DE-4EE7-83CF-6AE7CCBAF090/Documents/aFileName
文件路径：/Users/zaph/Library/Developer/CoreSimulator/Devices/264B31F6-3A28-4C75-9205-3558BBF54DED/data/Containers/Data/Application/0048403F-C8DE-4EE7-83CF-6AE7CCBAFs0
文件路径：/Users/zaph/Library/Developer/CoreSimulator/Devices/264B31F6-3A28-4C75-9205-3558BBF54DED/data/Containers/Data/Application/0048403F-C8DE-4EE7-83CF-6AE7CCBAFs/a9FileName/Documentation/
filePathURL: file:///Users/zaph/Library/Developer/CoreSimulator/Devices/264B31F6-3A28-4C75-9205-3558BBF54DED/data/Containers/Data/Application/0048403F-C8DE-4EE7-83CF-69AE7Name/
With the intermediate statements each step can be validated.
使用中间语句可以验证每个步骤。
回答by Alexander Khitev
I found a solution for my question
我为我的问题找到了解决方案
##代码##