iOS--ViewController转场

前言

看到seedante的转场文章iOS 视图控制器转场详解，有兴趣就跟着学习咯.

转场协议

// UIViewControllerTransitioning.h// 1. 转场代理(required),提供动画控制器与交互控制器@protocol UIViewControllerTransitioningDelegate <NSObject>// 2. 转场上下文(required)，提供转场过程中视图控制器等相关的属性@protocol UIViewControllerContextTransitioning <NSObject>// 3. 动画控制器(required),执行动画@protocol UIViewControllerAnimatedTransitioning <NSObject>// 4. 交互(optional)，控制交互@protocol UIViewControllerInteractiveTransitioning <NSObject> //  UIViewControllerTransitionCoordinator.h// 5. 转场协调(optional)，协调转场动画与其它动画，可让两者并行执行@protocol UIViewControllerTransitionCoordinator <UIViewControllerTransitionCoordinatorContext>

转场代理

转场代理里动画控制器与交互控制器可选实现。 没有实现或者返回nil则使用默认的转场效果。

@protocol UIViewControllerTransitioningDelegate <NSObject>@optional- (nullable id <UIViewControllerAnimatedTransitioning>)animationControllerForPresentedController:(UIViewController *)presented presentingController:(UIViewController *)presenting sourceController:(UIViewController *)source;- (nullable id <UIViewControllerAnimatedTransitioning>)animationControllerForDismissedController:(UIViewController *)dismissed;- (nullable id <UIViewControllerInteractiveTransitioning>)interactionControllerForPresentation:(id <UIViewControllerAnimatedTransitioning>)animator;- (nullable id <UIViewControllerInteractiveTransitioning>)interactionControllerForDismissal:(id <UIViewControllerAnimatedTransitioning>)animator;- (nullable UIPresentationController *)presentationControllerForPresentedViewController:(UIViewController *)presented presentingViewController:(UIViewController *)presenting sourceViewController:(UIViewController *)source NS_AVAILABLE_IOS(8_0);@end

转场上下文

该协议中蛮多方法的。

@protocol UIViewControllerContextTransitioning <NSObject>- (nullable UIView *)containerView;- (BOOL)isAnimated;- (BOOL)isInteractive; // This indicates whether the transition is currently interactive.- (BOOL)transitionWasCancelled;- (UIModalPresentationStyle)presentationStyle;- (void)updateInteractiveTransition:(CGFloat)percentComplete;- (void)finishInteractiveTransition;- (void)cancelInteractiveTransition;- (void)completeTransition:(BOOL)didComplete;- (nullable __kindof UIViewController *)viewControllerForKey:(NSString *)key;- (nullable __kindof UIView *)viewForKey:(NSString *)key NS_AVAILABLE_IOS(8_0);- (CGAffineTransform)targetTransform NS_AVAILABLE_IOS(8_0);- (CGRect)initialFrameForViewController:(UIViewController *)vc;- (CGRect)finalFrameForViewController:(UIViewController *)vc;@end

动画控制器

@protocol UIViewControllerAnimatedTransitioning <NSObject>- (NSTimeInterval)transitionDuration:(nullable id <UIViewControllerContextTransitioning>)transitionContext;- (void)animateTransition:(id <UIViewControllerContextTransitioning>)transitionContext;@optional// This is a convenience and if implemented will be invoked by the system when the transition context's completeTransition: method is invoked.- (void)animationEnded:(BOOL) transitionCompleted;@end

交互控制器

@protocol UIViewControllerInteractiveTransitioning <NSObject>- (void)startInteractiveTransition:(id <UIViewControllerContextTransitioning>)transitionContext;@optional- (CGFloat)completionSpeed;- (UIViewAnimationCurve)completionCurve;@end

参考资料

iOS 视图控制器转场详解
自定义 ViewController 容器转场