iPhone cookies to store username and password

I have no idea how to store username and password details so that the user does not have to login everytime for the iPhone app.

Can anyone l开发者_如何转开发ead me in the right direction? I can't seem to find what to do.

Thanks!

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You should be using the Keychain API. It will encrypt the data (not hash, as if you have to send it a the server, then the hash wouldn't be any use).

It's a bit of a pain, so take a look at some of sample code and 3rd-party wrappers available on the internet.

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You can use Core Data or SQLite or any other storage (XML, JSON), since there are no cookies in iPhone.

Core Data

http://developer.apple.com/iphone/library/documentation/DataManagement/Conceptual/iPhoneCoreData01/Introduction/Introduction.html

SQLite

http://dblog.com.au/iphone-development-tutorials/iphone-sdk-tutorial-reading-data-from-a-sqlite-database/

Also remember to hash the password you should use MD5 at least.