151

我只想在我的 iPhone 应用程序的文档文件夹中创建新文件夹。

有人知道该怎么做吗？

感谢你的帮助！

4

9 回答 9

328

我这样做是通过以下方式：

NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
NSString *documentsDirectory = [paths objectAtIndex:0]; // Get documents folder
NSString *dataPath = [documentsDirectory stringByAppendingPathComponent:@"/MyFolder"];

if (![[NSFileManager defaultManager] fileExistsAtPath:dataPath])
    [[NSFileManager defaultManager] createDirectoryAtPath:dataPath withIntermediateDirectories:NO attributes:nil error:&error]; //Create folder
于 2009-11-19T12:10:27.817 回答
14

我没有足够的声誉来评论 Manni 的回答，但是 [paths objectAtIndex:0] 是获取应用程序文档目录的标准方式

http://developer.apple.com/library/ios/documentation/iPhone/Conceptual/iPhoneOSProgrammingGuide/StandardBehaviors/StandardBehaviors.html#//apple_ref/doc/uid/TP40007072-CH4-SW6

因为 NSSearchPathForDirectoriesInDomains 函数最初是为 Mac OS X 设计的，其中每个目录可能不止一个，所以它返回一个路径数组而不是单个路径。在 iOS 中，结果数组应包含目录的单一路径。清单 3-1 显示了该函数的典型用法。

清单 3-1 获取应用程序 Documents 目录的路径

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
于 2011-01-13T01:57:21.293 回答
14

斯威夫特 3 解决方案：

private func createImagesFolder() {
        // path to documents directory
        let documentDirectoryPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first
        if let documentDirectoryPath = documentDirectoryPath {
            // create the custom folder path
            let imagesDirectoryPath = documentDirectoryPath.appending("/images")
            let fileManager = FileManager.default
            if !fileManager.fileExists(atPath: imagesDirectoryPath) {
                do {
                    try fileManager.createDirectory(atPath: imagesDirectoryPath,
                                                    withIntermediateDirectories: false,
                                                    attributes: nil)
                } catch {
                    print("Error creating images folder in documents dir: \(error)")
                }
            }
        }
    }
于 2016-12-04T12:30:35.600 回答
9

我不喜欢“[paths objectAtIndex:0]”，因为如果 Apple 添加一个以“A”、“B”或“C”开头的新文件夹，则“Documents”文件夹不是目录中的第一个文件夹。

更好的：

NSString *dataPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/MyFolder"];
if (![[NSFileManager defaultManager] fileExistsAtPath:dataPath])
    [[NSFileManager defaultManager] createDirectoryAtPath:dataPath withIntermediateDirectories:NO attributes:nil error:&error]; //Create folder
于 2011-01-03T14:05:03.203 回答
8

Swift 2解决方案：

let documentDirectoryPath: String = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).first!
if !NSFileManager.defaultManager().fileExistsAtPath(documentDirectoryPath) {
        do {
            try NSFileManager.defaultManager().createDirectoryAtPath(documentDirectoryPath, withIntermediateDirectories: false, attributes: nil)

        } catch let createDirectoryError as NSError {
            print("Error with creating directory at path: \(createDirectoryError.localizedDescription)")
        }

    }
于 2015-10-05T10:31:37.067 回答
5

这对我来说很好，

NSFileManager *fm = [NSFileManager defaultManager];
NSArray *appSupportDir = [fm URLsForDirectory:NSDocumentsDirectory inDomains:NSUserDomainMask];
NSURL* dirPath = [[appSupportDir objectAtIndex:0] URLByAppendingPathComponent:@"YourFolderName"];

NSError*    theError = nil; //error setting
if (![fm createDirectoryAtURL:dirPath withIntermediateDirectories:YES
                           attributes:nil error:&theError])
{
   NSLog(@"not created");
}
于 2013-04-11T17:47:06.707 回答
4

斯威夫特 4.0

let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)
// Get documents folder
let documentsDirectory: String = paths.first ?? ""
// Get your folder path
let dataPath = documentsDirectory + "/yourFolderName"
if !FileManager.default.fileExists(atPath: dataPath) {
    // Creates that folder if not exists
    try? FileManager.default.createDirectory(atPath: dataPath, withIntermediateDirectories: false, attributes: nil)
}
于 2017-08-19T06:58:03.433 回答
1

以下代码可能有助于创建目录：

-(void) createDirectory : (NSString *) dirName {

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0]; // Fetch path for document directory
dataPath = (NSMutableString *)[documentsDirectory stringByAppendingPathComponent:dirName];

NSError *error;

if (![[NSFileManager defaultManager] createDirectoryAtPath:dataPath withIntermediateDirectories:NO attributes:nil error:&error]) {
    NSLog(@"Couldn't create directory error: %@", error);
}
else {
    NSLog(@"directory created!");
}

NSLog(@"dataPath : %@ ",dataPath); // Path of folder created

}

用法 ：

[self createDirectory:@"MyFolder"];

结果 ：

目录创建！

数据路径：/var/mobile/Applications/BD4B5566-1F11-4723-B54C-F1D0B23CBC/Documents/MyFolder

于 2014-01-24T14:41:40.720 回答
1

斯威夫特 1.2 和 iOS 8

在文档目录中创建自定义目录 (name = "MyCustomData")，但前提是该目录不存在。

// path to documents directory
let documentDirectoryPath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).first as! String

// create the custom folder path
let myCustomDataDirectoryPath = documentDirectoryPath.stringByAppendingPathComponent("/MyCustomData")

// check if directory does not exist
if NSFileManager.defaultManager().fileExistsAtPath(myCustomDataDirectoryPath) == false {

    // create the directory
    var createDirectoryError: NSError? = nil
    NSFileManager.defaultManager().createDirectoryAtPath(myCustomDataDirectoryPath, withIntermediateDirectories: false, attributes: nil, error: &createDirectoryError)

    // handle the error, you may call an exception
    if createDirectoryError != nil {
        println("Handle directory creation error...")
    }

}
于 2015-07-13T13:19:59.110 回答