有没有办法以修改日期的顺序显示文档目录中的文件

NSFileManager 类提供对文件属性的访问。

NSFileManager* manager = [NSFileManager defaultManager];
for (NSString *path in [manager contentsOfDirectoryAtPath: documentsDirectory error:nil]){
   NSDictionary* modDate = [manager attributesOfItemAtPath:
             [documentsDirectory stringByAppendingPathComponent:path] error:nil];
   NSDate* dateModified = (NSDate*)[modDate objectForKey: NSFileModificationDate];
   if (dateModified)
      NSLog(@"%@ .Date modified: %@", path, dateModified);
}