iOS遍历程序内某个文件夹下所有文件的属性

项目中有个文件管理系统，在做本地文件管理操作的时候，遇到了遍历本地文件的问题
遍历到的文件有些不需要显示，而且需要得到文件的相关属性，在此总结下。
 1     //查找需要遍历文件夹的目录
 2     NSString *kDocumentsPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject;
 3     NSFileManager *fm = [NSFileManager defaultManager];
 4    [fm createDirectoryAtPath: [kDocumentsPath stringByAppendingPathComponent:@"localFile"] withIntermediateDirectories:YES attributes:nil error:nil];
 5     NSString *dir = [NSString stringWithFormat:@"%@/localFile",kDocumentsPath];
 6     NSDirectoryEnumerator *dirEnumerater = [fm enumeratorAtPath:dir];
 7     NSString *filePath = nil;
 8     //开始遍历文件
 9     while (nil != (filePath = [dirEnumerater nextObject])) {
10         NSString *msgdir = [NSString stringWithFormat:@"%@/localFile/%@",kDocumentsPath,filePath];
11         BOOL isDir;
12         //比对文件类型，删除不相关类型的文件
13         if ([fm fileExistsAtPath:msgdir isDirectory:&isDir]) {
14             if (!isDir) {
15                 if ([[filePath lastPathComponent] isEqualToString:@".DS_Store"]) {
16                     continue;
17                 }
18                 if ([[filePath lastPathComponent] isEqualToString:@"index.htm"]) {
19                     continue;
20                 }
21                 if ([[filePath lastPathComponent] isEqualToString:@"index.html"]) {
22                     continue;
23                 }
24                 
25                 NSString *fileNameStr = [filePath lastPathComponent];
26                 NSString *filePath = msgdir;
27                 //文件修改时间
28                 NSDictionary *attributes = [fm attributesOfItemAtPath:msgdir error:nil];
29                 NSDate *theModifiDate;
30                 if ((theModifiDate = [attributes objectForKey:NSFileModificationDate])) {
31                     NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
32                     [formatter setDateFormat:@"yyyy.MM.dd  HH:mm"];
33                     NSString *dateStr = [formatter stringFromDate:theModifiDate];
34                     NSFileManager* manager = [NSFileManager defaultManager];
35                     long long fileSize;
36                     if ([manager fileExistsAtPath:filePath]){
37                         fileSize = [[manager attributesOfItemAtPath:filePath error:nil] fileSize];
38                     }
39                     NSDictionary *dic = [NSDictionary dictionaryWithObjectsAndKeys:fileNameStr,@"name",filePath,@"path",dateStr,@"time",@(fileSize),@"size", nil];
40                     [localFileArr addObject:dic];
41 //                     NSLog(@"
-----文件名%@
_______文件路径%@
======修改时间%@
-=-=-=-大小  %lld",fileNameStr,filePath,dateStr,fileSize);
42                     
43                 }
44             }
45         }
46     }