iOS 创建文件夹，删除文件夹，对文件夹重命名的操作

+ (void)createFolder:(NSString )folderName {
    NSString imageDir = [NSString stringWithFormat:@"%@/Documents/%@", NSHomeDirectory(),folderName];
    NSLog(@"HomeDir: %@",imageDir);
    BOOL isDir = NO;
    NSFileManager *fileManager = [NSFileManager defaultManager];
    BOOL existed = [fileManager fileExistsAtPath:imageDir isDirectory:&isDir];
    if ( !(isDir == YES && existed == YES) )
    {
        [fileManager createDirectoryAtPath:imageDir withIntermediateDirectories:YES attributes:nil error:nil];
    }
}

(void)deleteFolder:(NSString )folderName {
  NSString imageDir = [NSString stringWithFormat:@"%@/Documents/%@", NSHomeDirectory(),folderName];
  NSLog(@"HomeDir: %@",imageDir);
  NSFileManager *fileManager = [NSFileManager defaultManager];
  [fileManager removeItemAtPath:imageDir error:nil];
}

(void)changeFolderName:(NSString )folderName beforeName:(NSString )beforeName {
  NSFileManager fm = [NSFileManager defaultManager];
  NSString beforeFolder = [NSString stringWithFormat:@"%@/Documents/%@", NSHomeDirectory(),beforeName];
  NSString *afterFolder = [NSString stringWithFormat:@"%@/Documents/%@", NSHomeDirectory(),folderName];
[fm createDirectoryAtPath:afterFolder withIntermediateDirectories:YES attributes:nil error:nil];
NSDirectoryEnumerator dirEnum = [fm enumeratorAtPath:beforeFolder];
  NSString path;
  while ((path = [dirEnum nextObject]) != nil) {

  [fm moveItemAtPath:[NSString stringWithFormat:@"%@/%@",beforeFolder,path]
              toPath:[NSString stringWithFormat:@"%@/%@",afterFolder,path]
               error:NULL];

}
  [fm removeItemAtPath:beforeFolder error:nil];
}</pre>