目标c：如何只删除目录下的所有文件，但保留目录本身

我发现下面的代码删除了objective-c中的文件，但是我只想删除Caches目录下的所有文件并保留目录Caches本身。

有人可以建议这样做的方法吗？

谢谢

 NSFileManager *filemgr; filemgr = [NSFileManager defaultManager]; if ([filemgr removeItemAtPath: [NSHomeDirectory() stringByAppendingString:@"/Library/Caches"] error: NULL] == YES) NSLog (@"Remove successful"); else NSLog (@"Remove failed"); 

更新

 NSFileManager *filemgr; filemgr = [NSFileManager defaultManager]; if ([filemgr removeItemAtPath: [NSHomeDirectory() stringByAppendingString:@"/Library/Caches"] error: NULL] == YES) NSLog (@"Remove successful"); else NSLog (@"Remove failed"); [filemgr createDirectoryAtPath: [NSHomeDirectory() stringByAppendingString:@"/Library/Caches"] withIntermediateDirectories:NO attributes:nil error:nil]; 

Answer 1

循环遍历该目录中的文件。

 NSFileManager *fileMgr = [NSFileManager defaultManager]; NSArray *fileArray = [fileMgr contentsOfDirectoryAtPath:directory error:nil]; for (NSString *filename in fileArray) { [fileMgr removeItemAtPath:[directory stringByAppendingPathComponent:filename] error:NULL]; } 

Answer 2

 - (void) removeDocuments { NSString *docDir = // get documents directory NSString *cacheDir = [docDir stringByAppendingPathComponent: @"cacheDir"]; // check if cache dir exists // get all files in this directory NSFileManager *fm = [NSFileManager defaultManager]; NSArray *fileList = [fm contentsOfDirectoryAtPath: cacheDir error: nil]; // remove for(NSInteger i = 0; i < [fileList count]; ++i) { NSString *fp = [fileList objectAtIndex: i]; NSString *remPath = [cacheDir stringByAppendingPathComponent: fp]; [fm removeItemAtPath: remPath error: nil]; } }