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。
<pre>
//查找需要遍历文件夹的目录
NSString *kDocumentsPath = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject;
NSFileManager *fm = [NSFileManager defaultManager];
[fm createDirectoryAtPath: [kDocumentsPath stringByAppendingPathComponent:@"localFile"] withIntermediateDirectories:YES attributes:nil error:nil];
NSString *dir = [NSString stringWithFormat:@"%@/localFile",kDocumentsPath];
NSDirectoryEnumerator *dirEnumerater = [fm enumeratorAtPath:dir];
NSString *filePath = nil;
//开始遍历文件
while (nil != (filePath = [dirEnumerater nextObject])) {
NSString *msgdir = [NSString stringWithFormat:@"%@/localFile/%@",kDocumentsPath,filePath];
BOOL isDir;
//比对文件类型，删除不相关类型的文件
if ([fm fileExistsAtPath:msgdir isDirectory:&isDir]) {
if (!isDir) {
if ([[filePath lastPathComponent] isEqualToString:@".DS_Store"]) {
continue;
}
if ([[filePath lastPathComponent] isEqualToString:@"index.htm"]) {
continue;
}
if ([[filePath lastPathComponent] isEqualToString:@"index.html"]) {
continue;
}

            NSString *fileNameStr = [filePath lastPathComponent];
            NSString *filePath = msgdir;
            //文件修改时间
            NSDictionary *attributes = [fm attributesOfItemAtPath:msgdir error:nil];
            NSDate *theModifiDate;
            if ((theModifiDate = [attributes objectForKey:NSFileModificationDate])) {
                NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
                [formatter setDateFormat:@"yyyy.MM.dd  HH:mm"];
                NSString *dateStr = [formatter stringFromDate:theModifiDate];
                NSFileManager* manager = [NSFileManager defaultManager];
                long long fileSize;
                if ([manager fileExistsAtPath:filePath]){
                    fileSize = [[manager attributesOfItemAtPath:filePath error:nil] fileSize];
                }
                NSDictionary *dic = [NSDictionary dictionaryWithObjectsAndKeys:fileNameStr,@"name",filePath,@"path",dateStr,@"time",@(fileSize),@"size", nil];
                [localFileArr addObject:dic];

// NSLog(@"\n-----文件名%@\n_______文件路径%@\n======修改时间%@\n-=-=-=-大小 %lld",fileNameStr,filePath,dateStr,fileSize);

            }
        }
    }
}

</pre>