UITabBarControllerDelegate delegate
- (id <UIViewControllerInteractiveTransitioning>)tabBarController:(UITabBarController *)tabBarController
interactionControllerForAnimationController: (id <UIViewControllerAnimatedTransitioning>)animationController NS_AVAILABLE_IOS(7_0);
- (id <UIViewControllerAnimatedTransitioning>)tabBarController:(UITabBarController *)tabBarController
animationControllerForTransitionFromViewController:(UIViewController *)fromVC
toViewController:(UIViewController *)toVC NS_AVAILABLE_IOS(7_0);

/**
 *  自定義的動畫類
 *  實現協議------>@protocol UIViewControllerAnimatedTransitioning
 *  這個接口負責切換的具體內容，也即“切換中應該發生什么”
 */ 
@interface MTHCustomAnimator : NSObject <UIViewControllerAnimatedTransitioning> 
 
@end 
 
@implementation MTHCustomAnimator 
 
// 系統給出一個切換上下文，我們根據上下文環境返回這個切換所需要的花費時間 
- (NSTimeInterval)transitionDuration:(id<UIViewControllerContextTransitioning>)transitionContext 
{ 
    return 1.0; 
} 
 
// 完成容器轉場動畫的主要方法，我們對于切換時的UIView的設置和動畫都在這個方法中完成 
- (void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext 
{ 
    // 可以看做為destination ViewController 
    UIViewController *toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey]; 
    // 可以看做為source ViewController 
    UIViewController *fromViewController = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey]; 
    // 添加toView到容器上 
        // 如果是XCode6 就可以用這段 
    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0) 
    { 
        // iOS8 SDK 新API 
        UIView *toView = [transitionContext viewForKey:UITransitionContextToViewKey]; 
        //UIView *fromView = [transitionContext viewForKey:UITransitionContextFromViewKey]; 
        [[transitionContext containerView] addSubview:toView]; 
    }else{ 
        // 添加toView到容器上 
        [[transitionContext containerView] addSubview:toViewController.view]; 
    } 
     
    // 如果是XCode5 就是用這段 
    [[transitionContext containerView] addSubview:toViewController.view]; 
    toViewController.view.alpha = 0.0; 
    [UIView animateWithDuration:[self transitionDuration:transitionContext] animations:^{ 
        // 動畫效果有很多,這里就展示個左偏移 
        fromViewController.view.transform = CGAffineTransformMakeTranslation(-320, 0); 
        toViewController.view.alpha = 1.0; 
    } completion:^(BOOL finished) { 
        fromViewController.view.transform = CGAffineTransformIdentity; 
        // 聲明過渡結束-->記住，一定別忘了在過渡結束時調用 completeTransition: 這個方法 
        [transitionContext completeTransition:![transitionContext transitionWasCancelled]]; 
    }]; 
} 

     
// MainViewController 
@interface MTHMainViewController () <UINavigationControllerDelegate,UIViewControllerTransitioningDelegate> 
 
@property (nonatomic,strong) MTHCustomAnimator *customAnimator; 
@property (nonatomic,strong) PDTransitionAnimator *minToMaxAnimator; 
@property (nonatomic,strong) MTHNextViewController *nextVC; 
// 交互控制器 (Interaction Controllers) 通過遵從 UIViewControllerInteractiveTransitioning 協議來控制可交互式的轉場。 
@property (strong, nonatomic) UIPercentDrivenInteractiveTransition* interactionController; 
@end 
 
@implementation MTHMainViewController 
 
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil 
{ 
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; 
    if (self) { 
        // Custom initialization 
    } 
    return self; 
} 
 
- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view. 
    self.navigationItem.title = @"Demo"; 
    self.view.backgroundColor = [UIColor yellowColor]; 
    // 設置代理 
    self.navigationController.delegate = self; 
    // 設置轉場動畫 
    self.customAnimator = [[MTHCustomAnimator alloc] init]; 
    self.minToMaxAnimator = [PDTransitionAnimator new]; 
 
    self.nextVC = [[MTHNextViewController alloc] init]; 
    // Present的代理和自定義設置 
    _nextVC.transitioningDelegate = self; 
    _nextVC.modalPresentationStyle = UIModalPresentationCustom; (貌似有BUG)換成modalTransitionStyle = UIModalPresentationCustom 
     
    // Push 
    UIButton *pushButton = [UIButton buttonWithType:UIButtonTypeSystem]; 
    pushButton.frame = CGRectMake(140, 200, 40, 40); 
    [pushButton setTitle:@"Push" forState:UIControlStateNormal]; 
    [pushButton addTarget:self action:@selector(push) forControlEvents:UIControlEventTouchUpInside]; 
    [self.view addSubview:pushButton]; 
     
    // Present 
    UIButton *modalButton = [UIButton buttonWithType:UIButtonTypeSystem]; 
    modalButton.frame = CGRectMake(265, 500, 50, 50); 
    [modalButton setTitle:@"Modal" forState:UIControlStateNormal]; 
    [modalButton addTarget:self action:@selector(modal) forControlEvents:UIControlEventTouchUpInside]; 
    [self.view addSubview:modalButton]; 
     
    // 實現交互操作的手勢 
    UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(didClickPanGestureRecognizer:)]; 
    [self.navigationController.view addGestureRecognizer:panRecognizer]; 
} 
 
 
- (void)push 
{ 
    [self.navigationController pushViewController:_nextVC animated:YES]; 
} 
 
- (void)modal 
{ 
    [self presentViewController:_nextVC animated:YES completion:nil]; 
} 
 
#pragma mark - UINavigationControllerDelegate iOS7新增的2個方法 
// 動畫特效 
- (id<UIViewControllerAnimatedTransitioning>) navigationController:(UINavigationController *)navigationController animationControllerForOperation:(UINavigationControllerOperation)operation fromViewController:(UIViewController *)fromVC toViewController:(UIViewController *)toVC 
{ 
    /**
     *  typedef NS_ENUM(NSInteger, UINavigationControllerOperation) {
     *     UINavigationControllerOperationNone,
     *     UINavigationControllerOperationPush,
     *     UINavigationControllerOperationPop,
     *  };
     */ 
    if (operation == UINavigationControllerOperationPush) { 
        return self.customAnimator; 
    }else{ 
        return nil; 
    } 
} 
 
// 交互 
- (id <UIViewControllerInteractiveTransitioning>)navigationController:(UINavigationController*)navigationController                           interactionControllerForAnimationController:(id <UIViewControllerAnimatedTransitioning>)animationController 
{ 
    /**
     *  在非交互式動畫效果中，該方法返回 nil
     *  交互式轉場,自我理解意思是,用戶能通過自己的動作來(常見:手勢)控制,不同于系統缺省給定的push或者pop(非交互式)
     */ 
    return _interactionController; 
}  
 
#pragma mark - Transitioning Delegate (Modal) 
// 前2個用于動畫 
-(id<UIViewControllerAnimatedTransitioning>)animationControllerForPresentedController:(UIViewController *)presented presentingController:(UIViewController *)presenting sourceController:(UIViewController *)source 
{ 
    self.minToMaxAnimator.animationType = AnimationTypePresent; 
    return _minToMaxAnimator; 
} 
 
-(id<UIViewControllerAnimatedTransitioning>)animationControllerForDismissedController:(UIViewController *)dismissed 
{ 
    self.minToMaxAnimator.animationType = AnimationTypeDismiss; 
    return _minToMaxAnimator; 
} 
 
// 后2個用于交互 
- (id <UIViewControllerInteractiveTransitioning>)interactionControllerForPresentation:(id <UIViewControllerAnimatedTransitioning>)animator 
{ 
    return _interactionController; 
} 
 
- (id <UIViewControllerInteractiveTransitioning>)interactionControllerForDismissal:(id <UIViewControllerAnimatedTransitioning>)animator 
{ 
    return nil; 
}