Save text in plist file with specific date - iphone

Question

I am trying to store some stings into a plist file, the saving process works fine, but these notes should be saved based on a specific date, for example I enter a note on 2 Feb then I need enter another note on 5 Feb, and when I move during these dates my notes should show on these dates. I would be grateful if you help me.
Here is my code:
//Save Setting ///////////////////
- (NSString *) saveFilePath
{
NSArray *pathArray =
NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSDate *date = [NSDate date];
return [[pathArray objectAtIndex:0] stringByAppendingPathComponent:#"note.plist"];
}
- (void)applicationWillTerminate:(UIApplication *)application
{
NSArray *values = [[NSArray alloc] initWithObjects:saveTextToday.text ,nil];
[values writeToFile:[self saveFilePath] atomically:YES];
[values release];
}
- (void)viewDidLoad
{
////Save Setting /////////////////////////////////////////////////
NSString *myPath = [self saveFilePath];
BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:myPath];
if (fileExists)
{
NSArray *values = [[NSArray alloc] initWithContentsOfFile:myPath];
saveTextToday.text = [values objectAtIndex:0];
[values release];
}
// notification
UIApplication *myApp = [UIApplication sharedApplication];
// add yourself to the dispatch table
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(applicationWillTerminate:)
name:UIApplicationWillTerminateNotification
object:myApp];
}

Answer 1

It appears you're saving an array to a file, but using a ".plist" file extension. While the file created will be a plist file, there is no date information in the content.
Instead of an array, you could use an NSDictionary. Use the current date as the key, and the array you're using now as the object. Like this:
NSMutableDictionary *myDictionary = [NSMutableDictionary alloc] initWithContentsOfFile:myPath];
NSString *todayKey = [self showPersianFullDate]; // or [self showPersianFullDate:[NSDate date]]
[myDictionary setObject:saveTextToday.text forKey:todayKey];
[myDictionary writeToFile:[self saveFilePath] atomically:YES];

Answer 2

I think what you want to do is use the NSFileManager to find out when the file was saved, like this:
NSString *path = #"the path you've saved you plist to";
NSFileManager *fileManager = [NSFileManager defaultManager];
NSDate *creationDate = nil;
if ([fileManager fileExistsAtPath:path])
{
NSError *error = nil;
NSDictionary *attributes = [fileManager attributesOfItemAtPath:path error:&error];
creationDate = [attributes objectForKey:NSFileCreationDate];
}
creationDate now contains the date when the file was first saved. To get the date when it was last saved, use NSFileModificationDate instead.