Comment by mayoff
The state preservation API wasn't added until iOS 6.0 in 2012.
https://developer.apple.com/documentation/uikit/uiviewcontro...
The state preservation API wasn't added until iOS 6.0 in 2012.
https://developer.apple.com/documentation/uikit/uiviewcontro...
That's just an improved API introduced in iOS 6.0. Here's another earlier API that's available since iOS 2.0: https://developer.apple.com/documentation/uikit/uiviewcontro...