【iOS学习笔记 15-11-06】简单自定义navigationcontroller push和pop动画效果

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最近在做项目的时候发现presentViewController 的时候和MBProgressHUD冲突了，当时不想修改MBProgressHUD的代码，所以就另外想了一个方法，利用pushViewController来解决这个问题，但是push的动画是从左至右的，和present从下至上的动画有区别的。

于是想到重写push的动画，思路如下：

首先创建一个UINavigationController+CustomAnimation的category（这里不了解category的同学可以看看）

直接上代码

//UINavigationController+CustomAnimation的category.h#import <UIKit/UIKit.h>@interface UINavigationController (CustomAnimation)- (void)pushViewController: (UIViewController*)controller;- (UIViewController*)popViewControllerAnimatedWithTransition;@end//UINavigationController+CustomAnimation的category.m#import "UINavigationController+CustomAnimation.h"@implementation UINavigationController (CustomAnimation)- (void)pushViewController: (UIViewController*)controller{        CATransition *transition = [CATransitionanimation];    transition.duration =0.3;    transition.timingFunction = [CAMediaTimingFunctionfunctionWithName:kCAMediaTimingFunctionEaseInEaseOut];    transition.type =kCATransitionMoveIn;    transition.subtype =kCATransitionFromTop;    self.navigationBarHidden =NO;    [selfpushViewController:controlleranimated:NO];    [self.view.layeraddAnimation:transitionforKey:nil];}- (UIViewController*)popViewControllerAnimatedWithTransition {        CATransition *transition = [CATransitionanimation];    transition.duration =0.3;    transition.timingFunction = [CAMediaTimingFunctionfunctionWithName:kCAMediaTimingFunctionEaseInEaseOut];    transition.type =kCATransitionReveal;    transition.subtype =kCATransitionFromBottom;    self.navigationBarHidden =NO;        [self.view.layeraddAnimation:transitionforKey:nil];        UIViewController* poppedController = [selfpopViewControllerAnimated:NO];        return poppedController;}@end

利用CATransition来实现push和pop动画

transition.type = kCATransitionMoveIn;//枚举量，表示动画类型，有3D旋转，淡入淡出，翻页和移动入场等

transition.subtype = kCATransitionFromTop;//枚举量，动画进入的方向和出去的方向，从上、下、左、右四个方向

然后在自己的项目里面import category，直接调用上面的方法就OK了，表面上是模态视图的动画效果，实际上是controller入栈操作

PS:后面要研究下引入MBProgressHUD，导致presentViewController崩溃的原因，有知道的童鞋希望不吝赐教

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