Core Location - Caching Old Location

[Cooper_1988]

Hi,

I'm using the core location framework to get the users location. The problem is sometimes the location which first appears is the previously last known location. now I've read a blog and it suggested:

"Core Location will cache data. The first reading it provides to your app is likely to be an old reading, which might or might not be accurate, depending on whether the phone has moved. Make sure to check the timestamp of any location and see if it's from before your app started."

How can I do this? Any ideas?



Regards,

Chris

[ZunePod]

Compare the date and times.

[ZunePod]

I know how stupid that post was, but that's basically all you need to do.

[Cooper_1988]

Originally Posted by ZunePod

I know how stupid that post was, but that's basically all you need to do.

No it made sense, however, when calling NSdate like so:

self.startDate = [NSDate date];

Is the return date a time stamp? as I'll be comparing to:

newLocation.timestamp;

Thanks.

[ZunePod]

Time in Seconds from January 01, 1970 with Objective-C [time] [cocoa] [Objective-C] [unixtime] [NSDate] [NSTimeInterval]

That's basically what you gotta do. (click the link)

[Cooper_1988]

Originally Posted by ZunePod

Time in Seconds from January 01, 1970 with Objective-C [time] [cocoa] [Objective-C] [unixtime] [NSDate] [NSTimeInterval]

That's basically what you gotta do. (click the link)

Thanks for the link.. However, I'd already managed to solve the problem by using the following:

if([newLocation.timestamp compare:self.startDate] == NSOrderedDescending )
{

..code..

}

This seems to work, as the startDate is given when the user presses a button and then every time a new location is found, it checks to see whether the timestamp is greater than the startDate, needless to say, if the timestamp provided is an old one i.e before the startDate variable, then nothing will happen and it'll just wait until the next location update.