UIViewAnimationOptionLayoutSubviews //Layout the subcontrols when submitting animation, indicating that the subcontrols will animate together with the parent control.
UIViewAnimationOptionAllowUserInteraction //Allow users to communicate during animation, such as touch
UIViewAnimationOptionBeginFromCurrentState //Start animation from the current state
UIViewAnimationOptionRepeat //Animation repeats infinitely
UIViewAnimationOptionAutoreverse //Execute animation loop, provided that the animation is set to repeat infinitely
UIViewAnimationOptionOverrideInheritedDuration //Ignore the execution time of the outer animation nesting
UIViewAnimationOptionOverrideInheritedCurve //Ignore the time curve of the outer animation nest
UIViewAnimationOptionAllowAnimatedContent //Achieve animation effects by changing properties and redrawing. If the key is not submitted for animation, a snapshot will be used.
UIViewAnimationOptionShowHideTransitionViews //Use the hidden method to replace the animation effect of adding and removing layers
UIViewAnimationOptionOverrideInheritedOptions //Ignore nested inherited options
//Time function curve related
UIViewAnimationOptionCurveEaseInOut //Time curve function, from slow to fast
UIViewAnimationOptionCurveEaseIn //Time curve function, from slow to extremely fast
UIViewAnimationOptionCurveEaseOut //Time curve function, from fast to slow
UIViewAnimationOptionCurveLinear //Time curve function, constant speed
//Transition animation related
UIViewAnimationOptionTransitionNone //No transition animation
UIViewAnimationOptionTransitionFlipFromLeft //Transition flips from left
UIViewAnimationOptionTransitionFlipFromRight //Transition flip from right
UIViewAnimationOptionTransitionCurlUp //Scroll up transition
UIViewAnimationOptionTransitionCurlDown //Scroll down transition
UIViewAnimationOptionTransitionCrossDissolve //Transition cross disappears
UIViewAnimationOptionTransitionFlipFromTop //Transition flips from top
UIViewAnimationOptionTransitionFlipFromBottom //Transition flips from bottom to bottom