How much data can a key (setPreferenceForKey) hold?

[JasperGoes]

I want to store huge amounts of (gps) locations as an array or string to a key,
to submit them later on, to provide some kind of offline/holiday-roaming functionality.

How much data can I expect to fit in a key?

Thanks, Jasper

[powerpixels]

I want to store huge amounts of (gps) locations as an array or string to a key,
to submit them later on, to provide some kind of offline/holiday-roaming functionality.

How much data can I expect to fit in a key?

Thanks, Jasper

Not sure, but on several sources I found it's 20kb.

[JasperGoes]

To avoid keys being stuffed with too much data, I chose to save data to a great many keys instead,
handling them as "blocks". Left the tracker running overnight, and seems like 12 hours and 24
minutes of caching locations, results in a usage of little over 6mb of memory on the phones main memory.
Seems to be sufficient for now, will minimize it a bit more by "compressing" the data efficiently.

A question popped up though; I always install widgets on the phones main memory,
but if i would not, would the keys still be stored on the main memory? Thus, if a user
installs it with not-too-much free space on its main memory, would it run out?
Are "disk full" errors catchable? Is there some way to check for the amount of free space?

Thanks again :3


@powerpixels, really been appreciating your support lately. Thanks