Question

so I’m making an app and one page the user is going to type in a username and password. It will be stored in a string. Say this string was stored in the setting.m/.h files. How do I access them from other classes?

Answer 1

You should always use Keychain to store usernames and passwords, and since it’s stored securely and only accessible to your app. See Apple’s GenericKeychain sample code:

This sample shows how to add, query for, remove, and update a keychain
item of generic class type. Also demonstrates the use of shared
keychain items. All classes exhibit very similar behavior so the
included examples will scale to the other classes of Keychain Item:
Internet Password, Certificate, Key, and Identity.

If you want to store other strings, ints, floats, or arrays that aren’t sensitive, then you should look into using NSUserDefaults.