我不知道如何在iPhone上保存用户的登录信息

Question

I am making app about google documents. but I don't know How to save Login Information

Document Folder ? Cache Folder ? Where save Login Information ?

Answer 1

The best option is to use the keychain.

There's example code at the Apple site or Buzz Anderson has some great code at his site

Alternatively you could use NSUserDefaults but that's less secure. The keychain is encrypted, user defaults are not (unless you encrypt before insertion but that's extra work)