NSFileManager删除目录的内容 [英] NSFileManager delete contents of directory

问题描述

如何删除目录的所有内容而不删除目录本身？

How do you delete all the contents of a directory without deleting the directory itself? I want to basically empty a folder yet leave it (and the permissions) intact.

推荐答案

例如，我想基本上清空一个文件夹，通过使用目录枚举器：

E.g. by using a directory enumerator:

NSFileManager* fm = [[[NSFileManager alloc] init] autorelease];
NSDirectoryEnumerator* en = [fm enumeratorAtPath:path];    
NSError* err = nil;
BOOL res;

NSString* file;
while (file = [en nextObject]) {
    res = [fm removeItemAtPath:[path stringByAppendingPathComponent:file] error:&err];
    if (!res && err) {
        NSLog(@"oops: %@", err);
    }
}

Swift

let fileManager = NSFileManager.defaultManager()
let enumerator = fileManager.enumeratorAtURL(cacheURL, includingPropertiesForKeys: nil, options: nil, errorHandler: nil)
while let file = enumerator?.nextObject() as? String {
    fileManager.removeItemAtURL(cacheURL.URLByAppendingPathComponent(file), error: nil)
}

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