在文档文件夹中获取文件名的代码有什么问题?
func listFilesFromDocumentsFolder() -> [NSString]?{
var theError = NSErrorPointer()
let dirs = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.AllDomainsMask, true) as? [String]
if dirs != nil {
let dir = dirs![0] as NSString
let fileList = NSFileManager.defaultManager().contentsOfDirectoryAtPath(dir, error: theError) as [NSString]
return fileList
}else{
return nil
}
}
我认为我正确地阅读了文档,并且我非常确定documents文件夹中有什么,但是"fileList“没有显示任何内容?"dir“显示文件夹的路径。
发布于 2017-02-13 18:47:16
SWIFT 3的简短语法
func listFilesFromDocumentsFolder() -> [String]?
{
let fileMngr = FileManager.default;
// Full path to documents directory
let docs = fileMngr.urls(for: .documentDirectory, in: .userDomainMask)[0].path
// List all contents of directory and return as [String] OR nil if failed
return try? fileMngr.contentsOfDirectory(atPath:docs)
}
使用示例:
override func viewDidLoad()
{
print(listFilesFromDocumentsFolder())
}
在装有iOS 10.2的iPhone 7的xCode 8.2.3和装有iOS 9.3的iPad上进行了测试
发布于 2014-12-31 22:50:44
此代码打印出my documents目录中的所有目录和文件:
对您的函数进行一些修改:
func listFilesFromDocumentsFolder() -> [String]
{
let dirs = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.allDomainsMask, true)
if dirs != [] {
let dir = dirs[0]
let fileList = try! FileManager.default.contentsOfDirectory(atPath: dir)
return fileList
}else{
let fileList = [""]
return fileList
}
}
它通过以下方式调用:
let fileManager:FileManager = FileManager.default
let fileList = listFilesFromDocumentsFolder()
let count = fileList.count
for i in 0..<count
{
if fileManager.fileExists(atPath: fileList[i]) != true
{
print("File is \(fileList[i])")
}
}
发布于 2015-08-27 06:31:24
Swift 2.0兼容性
func listWithFilter () {
let fileManager = NSFileManager.defaultManager()
// We need just to get the documents folder url
let documentsUrl = fileManager.URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0] as NSURL
do {
// if you want to filter the directory contents you can do like this:
if let directoryUrls = try? NSFileManager.defaultManager().contentsOfDirectoryAtURL(documentsUrl, includingPropertiesForKeys: nil, options: NSDirectoryEnumerationOptions.SkipsSubdirectoryDescendants) {
print(directoryUrls)
........
}
}
}
或
func listFiles() -> [String] {
var theError = NSErrorPointer()
let dirs = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.AllDomainsMask, true) as? [String]
if dirs != nil {
let dir = dirs![0]
do {
let fileList = try NSFileManager.defaultManager().contentsOfDirectoryAtPath(dir)
return fileList as [String]
}catch {
}
}else{
let fileList = [""]
return fileList
}
let fileList = [""]
return fileList
}
https://stackoverflow.com/questions/27721418
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