This is a practice for the function of Keychain
refer to someone else's code: http://blog.csdn.net/yy1992320/article/details/51161584
- UUID
- username
- password
I used three textfieldViews to edit them ,and we can changed username and password text. But the uuid is always the same ,sure, it is still your device's uuid just couldn't changed it. Anyway you can fix it.
you should try uninstall this app, then install it again ,to check it is still the same word in textfieldView, make sure the keychain is worked. Thanks to read!