控制器转场动画详解

2015-07-29 11:36:34来源:http://www.cnblogs.com/YouXianMing/p/4665558.html作者:YouXianMing的博客人点击

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效果

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

细节

导航栏控制器动画需要做的事情(*为添加回退百分比,非必须)

1. 添加协议