iOS: How do you find the creation date of a file?

user_228109 0
Viewed 41865

I'm trying to find the creation date (NOT modification date) of a file.

Creation date doesn't appear to be in the attributes of a file, though modified date is.

I'm using this code..

NSFileManager* fm = [NSFileManager defaultManager];

NSString* path = [PathHelpers pathInDocumentsFolderWithFilename:FILE_NAME];
NSDictionary* attrs = [fm attributesOfItemAtPath:path error:nil];

if (attrs != nil) {
    return (NSDate*)[attrs objectForKey: NSFileCreationDate];
} else {
    return nil;
}

This always returns nil. Typing 'po attrs' into the debugger to get the list of key/value pairs in the NSDictionary returns the following..

NSFileGroupOwnerAccountID = 20;
NSFileGroupOwnerAccountName = staff;
NSFileModificationDate = 2010-01-21 11:47:55 +0000;
NSFileOwnerAccountID = 501;
NSFileOwnerAccountName = ben;
NSFilePosixPermissions = 420;
NSFileReferenceCount = 1;
NSFileSize = 338;
NSFileSystemFileNumber = 2234;
NSFileSystemNumber = 42553324;
NSFileType = NSFileTypeRegular;

No creation date.. bah..

Anyone know another way of getting the creation date or does it just not exist in iOS?

nsfilemanager date file ios
10 Answers

In Swift 5:

let date = (try? FileManager.default.attributesOfItem(atPath: path))?[.creationDate] as? Date
user_6492280 
  NSDate *creationDate = nil;
  if ([fileManager fileExistsAtPath:filePath]) {
       NSDictionary *attributes = [fileManager attributesOfItemAtPath:filePath error:nil];
       creationDate = attributes[NSFileCreationDate];
  }

Its here

user_7556000

Swift 5

let url: URL = ....
let attributes = try? FileManager.default.attributesOfItem(atPath: url.path)
if let date = attributes?[.modificationDate] {
   print("File Modification date is %@", date)
}
if let date = attributes?[.creationDate] {
   print("File Creation date is %@", date)
}
user_84756380

Can you use fstat64 to get the st_birthtimespec member of the returned struct? You'll need to create a C file handle for the file and convert the timespec value into an NSDate, but that's better than nothing.

user_1054310
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