故事板登录屏幕的最佳实践，在注销时处理数据清理

I'm building an iOS app using a Storyboard. The root view controller is a Tab Bar Controller. I'm creating the login/logout process, and it's mostly working fine, but I've got a few issues. I need to know the BEST way to set all this up.I'm building an iOS app using a Storyboard. The