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控制器转场动画详解

作者： YouXianMing 授权本站转载。

效果

控制器转场动画详解

说明

1. 控制器转场动画包括了普通控制器的present与dismiss转场动画,还有NavigationController的push与pop转场动画.其中,NavigationController的pop动画包含了回退百分比显示

2. 对转场动画对象进行行为抽象,让使用更加简单

3. 即使简化了使用,控制器转场动画也是属于比较难掌握的

源码

https://github.com/YouXianMing/ViewControllersTransition

// //  BaseAnimator.h //  ViewControllersTransition // //  Created by YouXianMing on 15/7/21. //  Copyright (c) 2015年 YouXianMing. All rights reserved. // #import #import @interface BaseAnimator : NSObject /**  *  动画执行时间(默认值为0.5s)  */ @property (nonatomic) NSTimeInterval  transitionDuration; /**  *  == 子类重写此方法实现动画效果 ==  *  *  动画事件  */ - (void)animateTransitionEvent; /**  *  == 在animateTransitionEvent使用才有效 ==  *  *  源头控制器  */ @property (nonatomic, readonly, weak) UIViewController *fromViewController; /**  *  == 在animateTransitionEvent使用才有效 ==  *  *  目标控制器  */ @property (nonatomic, readonly, weak) UIViewController *toViewController; /**  *  == 在animateTransitionEvent使用才有效 ==  *  *  containerView  */ @property (nonatomic, readonly, weak) UIView           *containerView; /**  *  动画事件结束  */ - (void)completeTransition; @end

// //  BaseAnimator.m //  ViewControllersTransition // //  Created by YouXianMing on 15/7/21. //  Copyright (c) 2015年 YouXianMing. All rights reserved. // #import "BaseAnimator.h" @interface BaseAnimator () @property (nonatomic, weak) id  transitionContext; @property (nonatomic, weak) UIViewController  *fromViewController; @property (nonatomic, weak) UIViewController  *toViewController; @property (nonatomic, weak) UIView   *containerView; @end @implementation BaseAnimator #pragma mark - 初始化 - (instancetype)init {  self = [super init];  if (self) {   // 默认参数设置   [self deafultSet];  }  return self; } - (void)deafultSet {  _transitionDuration = 0.5f; } #pragma mark - 动画代理 - (NSTimeInterval)transitionDuration:(id )transitionContext {  return _transitionDuration; } - (void)animateTransition:(id )transitionContext {  self.fromViewController = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];  self.toViewController   = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];  self.containerView   = [transitionContext containerView];  self.transitionContext  = transitionContext;  [self animateTransitionEvent]; } - (void)animateTransitionEvent {  /* == 代码示例 ==  UIView *tmpView  = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];  [self.containerView addSubview:self.toViewController.view];  [self.containerView addSubview:tmpView];  [UIView animateWithDuration:self.transitionDuration         delay:0.0f    usingSpringWithDamping:1 initialSpringVelocity:0.f options:0 animations:^{     tmpView.frame = CGRectMake(0, 0, 100, 100);    } completion:^(BOOL finished) {     [tmpView removeFromSuperview];     [self completeTransition];    }];   */ } #pragma mark - - (void)completeTransition {  [self.transitionContext completeTransition:!self.transitionContext.transitionWasCancelled]; } @end