How do I store persistent data on my iOS app using

Question

I'm developing an iOS app that is going to parse XML from an RSS feed of events and display the details of each event on a table view. Each event has a title, a description (optional), a date and a time. I am able to parse the XML data using NSXMLParser; however, I am not sure how I should store the data and make it so that it persists after the app is closed.

I have read that I can use NSCoder to persist the data but I am not sure if this is the best route forward.

Does anyone have any ideas or suggestions as to what I could do?

Any help is appreciated.

Answer 1

You have several options for persisting data.

• NSUserDefaults are meant for user settings - small amounts of data. They seem unsuitable for what you have in mind.

• NSCoding is quite a good way to store structured data without the overhead of a database, yet it is slow in comparison to core data.

• Core Data is Apples ORM, which is quite powerfull but not as easy to wrap your head around.

I answered a similar question recently, which goes into more detail regarding NSCoding with a complete example and some links for further reading.