What is the "right" way to handle orientation changes in iOS 8?

What is the "right" way to handle orientation changes in iOS 8?

ios ios8 orientation uiinterfaceorientation landscape-portrait

ios

Launching into portrait-orientation from an iPhone 6 Plus home screen in landscape orientation results in wrong orientation

ios iphone ios8 uiinterfaceorientation

ios

iOS: Device orientation on load

iphone ios uiinterfaceorientation uidevice

ios

RootViewController animation transition, initial orientation is wrong

iphone ios ipad uiinterfaceorientation

ios

How to change the device orientation programmatically in iOS 6

ios objective-c uiinterfaceorientation

ios

iPad Landscape and Portrait different layouts with Size Class

ios iphone ipad uiinterfaceorientation size-classes

ios

Why in iOS 8 my app at launch take wrong orientation?

ios ipad cocoa-touch uiinterfaceorientation

ios