注：所有的动画我都封装起来了，拿了直接用即可，简单粗暴看代码，这里可以让你知其然，知其所以然。

实现UIViewControllerTransitioningDelegate的代理方法，把present从下面出来的view从右边动画出来，具体代码看github代码，具体方法如下：

-(NSTimeInterval)transitionDuration:(id)transitionContext{
    return 1.0;
}
-(void)animateTransition:(id)transitionContext{

}

-(id)animationControllerForPresentedController:(UIViewController *)presented presentingController:(UIViewController *)presenting sourceController:(UIViewController *)source{
    return (id)[[PresentAnimation alloc]init];
}

- (NSTimeInterval)transitionDuration:(id)transitionContext{
    return 1.0;
}
-(void)animateTransition:(id)transitionContext{
  
  }

- (nullable id )animationControllerForDismissedController:(UIViewController *)dismissed {
    return (id)[[DismissAnimation alloc]init];
}

动画添加新的view，type和subType不同，动画方式就不一样。这里只写一个不累赘

+ (void)pushView:(UIView *)View subView:(UIView *)subView AndAnimationType:(NSString *)type AndsubType:(NSString *)subType{  
    CATransition *transition = [CATransition animation];
    transition.duration = 1.0f;
    transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
    transition.type = type;
    transition.subtype = subType;
    [View.layer addAnimation:transition forKey:@"pushTransitionAnimation"];
    [View addSubview:subView];
}

关于CATransition的type和subType的介绍，前两篇博客已经介绍过，这里有github地址

动画移除新的view

+ (void)popView:(UIView *)View subView:(UIView *)subView AndAnimationType:(NSString *)type AndsubType:(NSString *)subType {
    CATransition *transition = [CATransition animation];
    transition.duration = 1.0f;
    transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
    transition.type = type;
    transition.subtype = subType;
    [View.superview.layer addAnimation:transition forKey:@"popTransitionAnimation"];
    [subView removeFromSuperview];
}

关于CATransition的type和subType的介绍，前两篇博客已经介绍过，这里有github地址

CGAffineTransform 主要用于形变，位移和旋转，可用于动画展示

• 位移X,Y

    CGAffineTransformMakeTranslation(CGFloat tx, CGFloat ty)
  

• 伸缩X,Y

    CGAffineTransformMakeScale(CGFloat sx, CGFloat sy)
  

• 旋转M_PI

    CGAffineTransformMakeRotation(CGFloat angle)
  

• 组合

    CGAffineTransformConcat(CGAffineTransform t1,CGAffineTransform t2)
  

• 回到原位

    CGAffineTransformIdentity
  

    [UIView animateWithDuration:1.0 animations:^{
    
    view.transform =CGAffineTransformConcat(CGAffineTransformMakeScale(scaleW, scaleH), CGAffineTransformMakeTranslation(W,H));
    
      } completion:^(BOOL finished) {
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
    
        view.transform = CGAffineTransformIdentity;
        
    });    
     }];