Kullanarak sekme çubuğuyla çalışan bir uygulamada programlı olarak sekmeleri değiştiriyorum UITabBarController.selectedIndex. Çözmeye çalıştığım sorun, görünümler arasındaki geçişin nasıl canlandırılacağı. yani. geçerli sekmenin görünümünden seçili sekmenin görünümüne.

İlk düşünce, öğesinden yararlanmaktı UITabBarControllerDelegate, ancak görünen o ki, sekmeler arasında programlı olarak geçiş yaparken bu çağrılmıyor. Şimdi şunu düşünüyorum UITabBarDelegate.didSelectItem: bir geçiş animasyonu oluşturmak için olası bir kanca.

Geçişleri canlandırmayı başaran var mı? Varsa nasıl?

Güncelleme 04/2016: Justed, tüm oylar için herkese teşekkür etmek için bunu güncellemek istedi. Lütfen bunun orijinal olarak ... ARC'den önce, kısıtlamalardan önce, daha önce ... birçok şeyden önce yazıldığına dikkat edin! Bu tekniklerin kullanılıp kullanılmayacağına karar verirken lütfen bunu dikkate alın. Daha modern yaklaşımlar olabilir. Oh, bir tane bulursan. Lütfen herkesin görebilmesi için bir yanıt ekleyin. Teşekkürler.

Bir süre sonra ...

Çok fazla araştırmadan sonra iki çalışma çözümü buldum. Bunların ikisi de çalıştı ve sekmeler arasındaki animasyonu yaptı.

1.Çözüm: Görünümden geçiş (basit)

Bu en kolayıdır ve önceden tanımlanmış bir UIView geçiş yöntemini kullanır. Bu çözümle görünümleri yönetmemize gerek yok çünkü yöntem bizim için çalışıyor.

// Get views. controllerIndex is passed in as the controller we want to go to. 
UIView * fromView = tabBarController.selectedViewController.view;
UIView * toView = [[tabBarController.viewControllers objectAtIndex:controllerIndex] view];

// Transition using a page curl.
[UIView transitionFromView:fromView 
                    toView:toView 
                  duration:0.5 
                   options:(controllerIndex > tabBarController.selectedIndex ? UIViewAnimationOptionTransitionCurlUp : UIViewAnimationOptionTransitionCurlDown)
                completion:^(BOOL finished) {
                    if (finished) {
                        tabBarController.selectedIndex = controllerIndex;
                    }
                }];

2.Çözüm: Kaydırma (daha karmaşık)

Daha karmaşık bir çözüm, ancak size animasyon üzerinde daha fazla kontrol sağlar. Bu örnekte, görünümlerin kayarak açılıp kapanmasını sağlıyoruz. Bununla görüşleri kendimiz yönetmemiz gerekiyor.

// Get the views.
UIView * fromView = tabBarController.selectedViewController.view;
UIView * toView = [[tabBarController.viewControllers objectAtIndex:controllerIndex] view];

// Get the size of the view area.
CGRect viewSize = fromView.frame;
BOOL scrollRight = controllerIndex > tabBarController.selectedIndex;

// Add the to view to the tab bar view.
[fromView.superview addSubview:toView];

// Position it off screen.
toView.frame = CGRectMake((scrollRight ? 320 : -320), viewSize.origin.y, 320, viewSize.size.height);

[UIView animateWithDuration:0.3 
                 animations: ^{

                     // Animate the views on and off the screen. This will appear to slide.
                     fromView.frame =CGRectMake((scrollRight ? -320 : 320), viewSize.origin.y, 320, viewSize.size.height);
                     toView.frame =CGRectMake(0, viewSize.origin.y, 320, viewSize.size.height);
                 }

                 completion:^(BOOL finished) {
                     if (finished) {

                         // Remove the old view from the tabbar view.
                         [fromView removeFromSuperview];
                         tabBarController.selectedIndex = controllerIndex;                
                     }
                 }];

Swift'deki Bu Çözüm:

extension TabViewController: UITabBarControllerDelegate {
      public func tabBarController(tabBarController: UITabBarController, shouldSelectViewController viewController: UIViewController) -> Bool {

           let fromView: UIView = tabBarController.selectedViewController!.view
           let toView  : UIView = viewController.view
           if fromView == toView {
                 return false
           }

           UIView.transitionFromView(fromView, toView: toView, duration: 0.3, options: UIViewAnimationOptions.TransitionCrossDissolve) { (finished:Bool) in

        }
        return true
   }
}

aşağıdaki drekka kod formunu temsilci (UITabBarControllerDelegate) yöntemine kullanma denemem

- (BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController {

    NSArray *tabViewControllers = tabBarController.viewControllers;
    UIView * fromView = tabBarController.selectedViewController.view;
    UIView * toView = viewController.view;
    if (fromView == toView)
        return false;
    NSUInteger fromIndex = [tabViewControllers indexOfObject:tabBarController.selectedViewController];
    NSUInteger toIndex = [tabViewControllers indexOfObject:viewController];

    [UIView transitionFromView:fromView
                        toView:toView
                      duration:0.3
                       options: toIndex > fromIndex ? UIViewAnimationOptionTransitionFlipFromLeft : UIViewAnimationOptionTransitionFlipFromRight
                    completion:^(BOOL finished) {
                        if (finished) {
                            tabBarController.selectedIndex = toIndex;
                        }
                    }];
    return true;
}

İOS7.0 veya üstü için çözümüm.

Sekme çubuğunun temsilcisinde özel bir animasyon denetleyicisi belirtebilirsiniz.

Bunun gibi bir animasyon denetleyicisi uygulayın:

@interface TabSwitchAnimationController : NSObject <UIViewControllerAnimatedTransitioning>

@end

@implementation TabSwitchAnimationController

- (NSTimeInterval)transitionDuration:(id <UIViewControllerContextTransitioning>)transitionContext
{
    return 0.2;
}

- (void)animateTransition:(id <UIViewControllerContextTransitioning>)transitionContext
{
    UIViewController* fromVC = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
    UIViewController* toVC = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
    UIView* toView = toVC.view;
    UIView* fromView = fromVC.view;

    UIView* containerView = [transitionContext containerView];
    [containerView addSubview:toView];
    toView.frame = [transitionContext finalFrameForViewController:toVC];

    // Animate by fading
    toView.alpha = 0.0;
    [UIView animateWithDuration:[self transitionDuration:transitionContext]
                          delay:0.0
                        options:UIViewAnimationOptionCurveEaseOut | UIViewAnimationOptionAllowUserInteraction
                     animations:^{
                         toView.alpha = 1.0;
                     }
                     completion:^(BOOL finished) {
                         toView.alpha = 1.0;
                         [fromView removeFromSuperview];
                         [transitionContext completeTransition:YES];
                     }];
}

@end

Ardından UITabBarControllerDelegate'inizde kullanın:

- (id <UIViewControllerAnimatedTransitioning>)tabBarController:(UITabBarController *)tabBarController
            animationControllerForTransitionFromViewController:(UIViewController *)fromVC
                                              toViewController:(UIViewController *)toVC
{
    return [[TabSwitchAnimationController alloc] init];
}

Kullanmak yerine tabBarController:shouldSelectViewController:uygulamak daha iyidirtabBarController:animationControllerForTransitionFromViewController:toViewController:

TransitioningObject.swift

import UIKit

class TransitioningObject: NSObject, UIViewControllerAnimatedTransitioning {

    func animateTransition(transitionContext: UIViewControllerContextTransitioning) {
        let fromView: UIView = transitionContext.viewForKey(UITransitionContextFromViewKey)!
        let toView: UIView = transitionContext.viewForKey(UITransitionContextToViewKey)!

        transitionContext.containerView().addSubview(fromView)
        transitionContext.containerView().addSubview(toView)

        UIView.transitionFromView(fromView, toView: toView, duration: transitionDuration(transitionContext), options: UIViewAnimationOptions.TransitionCrossDissolve) { finished in
            transitionContext.completeTransition(true)
        }
    }

    func transitionDuration(transitionContext: UIViewControllerContextTransitioning) -> NSTimeInterval {
        return 0.25
    }
}

TabBarViewController.swift

import UIKit

    class TabBarViewController: UITabBarController, UITabBarControllerDelegate {

    override func viewDidLoad() {
        super.viewDidLoad()

        self.delegate = self
    }

    // MARK: - Tabbar delegate

    func tabBarController(tabBarController: UITabBarController, animationControllerForTransitionFromViewController fromVC: UIViewController, toViewController toVC: UIViewController) -> UIViewControllerAnimatedTransitioning? {
        return TransitioningObject()
    }
}

CATransition kullanarak UITabBarControlelr için kolayca geçiş yapabileceğinizi düşünüyorum; Bu ayrıca transitionFromView: toView kullanmanın yan etkilerini de çözecektir:

Bunu, UITabBarController'dan genişletilmiş özel TabBarController sınıfınızda kullanın.

- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController (UIViewController*)viewController {

    CATransition *animation = [CATransition animation];
    [animation setType:kCATransitionFade];
    [animation setDuration:0.25];
    [animation setTimingFunction:[CAMediaTimingFunction functionWithName:
                              kCAMediaTimingFunctionEaseIn]];
    [self.view.window.layer addAnimation:animation forKey:@"fadeTransition"];
}

Bu yardımcı olur umarım :)

Buradaki çeşitli cevapları denedikten sonra bir yazı yazdım .

Kod Swift'dedir ve sekmeyi arayarak programlı olarak animasyonla değiştirebilirsiniz animateToTab.

func animateToTab(toIndex: Int) {
    let tabViewControllers = viewControllers!
    let fromView = selectedViewController!.view
    let toView = tabViewControllers[toIndex].view    
    let fromIndex = tabViewControllers.indexOf(selectedViewController!)

    guard fromIndex != toIndex else {return}

    // Add the toView to the tab bar view
    fromView.superview!.addSubview(toView)

    // Position toView off screen (to the left/right of fromView)
    let screenWidth = UIScreen.mainScreen().bounds.size.width;
    let scrollRight = toIndex > fromIndex;
    let offset = (scrollRight ? screenWidth : -screenWidth)
    toView.center = CGPoint(x: fromView.center.x + offset, y: toView.center.y)

    // Disable interaction during animation
    view.userInteractionEnabled = false

    UIView.animateWithDuration(0.5, delay: 0.0, usingSpringWithDamping: 1, initialSpringVelocity: 0, options: UIViewAnimationOptions.CurveEaseOut, animations: {

            // Slide the views by -offset
            fromView.center = CGPoint(x: fromView.center.x - offset, y: fromView.center.y);
            toView.center   = CGPoint(x: toView.center.x - offset, y: toView.center.y);

        }, completion: { finished in

            // Remove the old view from the tabbar view.
            fromView.removeFromSuperview()
            self.selectedIndex = toIndex
            self.view.userInteractionEnabled = true
        })
}

Tüm sekme değişikliklerinin animasyona sahip olmasını istiyorsanız, bunu UITabBarControllerDelegatebeğenmek için bağlayın:

func tabBarController(tabBarController: UITabBarController, shouldSelectViewController viewController: UIViewController) -> Bool {
    let tabViewControllers = tabBarController.viewControllers!
    guard let toIndex = tabViewControllers.indexOf(viewController) else {
        return false
    }

    // Our method
    animateToTab(toIndex)

    return true
}

Swift'deki çözümüm:

Özel TabBar sınıfı oluşturun ve bunu film şeridi TabBar'ınızda ayarlayın

class MainTabBarController: UITabBarController, UITabBarControllerDelegate {

override func viewDidLoad() {
    super.viewDidLoad()
    self.delegate = self
    // Do any additional setup after loading the view.
}

func tabBarController(tabBarController: UITabBarController, shouldSelectViewController viewController: UIViewController) -> Bool {


    let tabViewControllers = tabBarController.viewControllers!
    let fromView = tabBarController.selectedViewController!.view
    let toView = viewController.view

    if (fromView == toView) {
        return false
    }

    let fromIndex = tabViewControllers.indexOf(tabBarController.selectedViewController!)
    let toIndex = tabViewControllers.indexOf(viewController)

    let offScreenRight = CGAffineTransformMakeTranslation(toView.frame.width, 0)
    let offScreenLeft = CGAffineTransformMakeTranslation(-toView.frame.width, 0)

    // start the toView to the right of the screen


    if (toIndex < fromIndex) {
        toView.transform = offScreenLeft
        fromView.transform = offScreenRight
    } else {
        toView.transform = offScreenRight
        fromView.transform = offScreenLeft
    }

    fromView.tag = 124
    toView.addSubview(fromView)

    self.view.userInteractionEnabled = false
    UIView.animateWithDuration(0.5, delay: 0.0, usingSpringWithDamping: 1, initialSpringVelocity: 0, options: UIViewAnimationOptions.CurveEaseOut, animations: {

        toView.transform = CGAffineTransformIdentity

        }, completion: { finished in

            let subViews = toView.subviews
            for subview in subViews{
                if (subview.tag == 124) {
                    subview.removeFromSuperview()
                }
            }
            tabBarController.selectedIndex = toIndex!
            self.view.userInteractionEnabled = true

    })

    return true
 }

}

@ Mofumofu'nun çözümünü kullandım ve Swift 1.2'ye yükselttim ve ayrıca bir yukarı / aşağı animasyonu uyguladım. Yani, yeni ViewController açılır ve yeni görüntü denetleyicinin indeksi eskisinden daha büyükse eskisini yukarı iter. Aksi takdirde yön aşağıdır.

class TabScrollPageAnimationController: NSObject, UIViewControllerAnimatedTransitioning {

    let tabBarController: UITabBarController

    init(tabBarController: UITabBarController) {
        self.tabBarController = tabBarController
    }

    func transitionDuration(transitionContext: UIViewControllerContextTransitioning) -> NSTimeInterval {
        return 0.5
    }

    func animateTransition(transitionContext: UIViewControllerContextTransitioning) {
        if let fromVC = transitionContext.viewControllerForKey(UITransitionContextFromViewControllerKey),
            let toVC = transitionContext.viewControllerForKey(UITransitionContextToViewControllerKey) {
                let fromView = fromVC.view
                let toView = toVC.view

                let containerView = transitionContext.containerView()

                var directionUpwardMultiplier: CGFloat = 1.0
                if let vcs = tabBarController.viewControllers as? [UIViewController],
                    let fIndex = find(vcs, fromVC),
                    let tIndex = find(vcs, toVC) {
                        directionUpwardMultiplier = (fIndex < tIndex) ? +1.0 : -1.0
                }

                containerView.clipsToBounds = false
                containerView.addSubview(toView)

                var fromViewEndFrame = fromView.frame
                fromViewEndFrame.origin.y -= (containerView.frame.height * directionUpwardMultiplier)

                let toViewEndFrame = transitionContext.finalFrameForViewController(toVC)
                var toViewStartFrame = toViewEndFrame
                toViewStartFrame.origin.y += (containerView.frame.height * directionUpwardMultiplier)
                toView.frame = toViewStartFrame

                toView.alpha = 0.0
                UIView.animateWithDuration(transitionDuration(transitionContext), delay: 0.0, usingSpringWithDamping: 1.0, initialSpringVelocity: 0.0, options: UIViewAnimationOptions.CurveEaseInOut, animations: { () -> Void in
                    toView.alpha = 1.0
                    toView.frame = toViewEndFrame
                    fromView.alpha = 0.0
                    fromView.frame = fromViewEndFrame
                }, completion: { (completed) -> Void in
                    toView.alpha = 1.0
                    fromView.removeFromSuperview()
                    transitionContext.completeTransition(completed)
                    containerView.clipsToBounds = true
                })

        }
    }

}

Container ViewController'da:

extension XYViewController: UITabBarControllerDelegate {

    func tabBarController(tabBarController: UITabBarController, animationControllerForTransitionFromViewController fromVC: UIViewController, toViewController toVC: UIViewController) -> UIViewControllerAnimatedTransitioning? {
        return TabScrollPageAnimationController(tabBarController: tabBarController)
    }

}

İşte Swift 3 çözümüm:

UITabBarViewController'ımın selectedIndex'ini şu şekilde geçersiz kılıyorum:

override var selectedIndex: Int{
    get{
        return super.selectedIndex
    }
    set{
        animateToTab(toIndex: newValue)
        super.selectedIndex = newValue
    }
}

Ardından, yerel push / pop animasyonunu taklit eden bu işlevi kullanıyorum:

func animateToTab(toIndex: Int) {
    guard let tabViewControllers = viewControllers, tabViewControllers.count > toIndex, let fromViewController = selectedViewController, let fromIndex = tabViewControllers.index(of: fromViewController), fromIndex != toIndex else {return}

    view.isUserInteractionEnabled = false

    let toViewController = tabViewControllers[toIndex]
    let push = toIndex > fromIndex
    let bounds = UIScreen.main.bounds

    let offScreenCenter = CGPoint(x: fromViewController.view.center.x + bounds.width, y: toViewController.view.center.y)
    let partiallyOffCenter = CGPoint(x: fromViewController.view.center.x - bounds.width*0.25, y: fromViewController.view.center.y)

    if push{
        fromViewController.view.superview?.addSubview(toViewController.view)
        toViewController.view.center = offScreenCenter
    }else{
        fromViewController.view.superview?.insertSubview(toViewController.view, belowSubview: fromViewController.view)
        toViewController.view.center = partiallyOffCenter
    }

    UIView.animate(withDuration: 0.5, delay: 0, usingSpringWithDamping: 1, initialSpringVelocity: 0, options: .curveEaseIn, animations: {
        toViewController.view.center   = fromViewController.view.center
        fromViewController.view.center = push ? partiallyOffCenter : offScreenCenter
    }, completion: { finished in
        fromViewController.view.removeFromSuperview()
        self.view.isUserInteractionEnabled = true
    })
}

Umut ediyorum bu yardım eder :)

ürkek animasyon için bir düzeltme ...

UIView * fromView = self.view.superview;

bu iki şekilde çözülebilir

1 - Bunu AppDelegate.m dosyanıza bir kez yazın. AppDelegate.h dosyanıza iki nokta üst üste (:) 'den sonra <> kullanarak UITabBarControllerDelegate eklemeyi unutmayın.

-(void)tabBarController:(UITabBarController *)tabBarControllerThis didSelectViewController:(UIViewController *)viewController
{
    [UIView transitionWithView:viewController.view
                      duration:0.1
                       options:UIViewAnimationOptionAllowUserInteraction | UIViewAnimationOptionTransitionCrossDissolve
                    animations:^(void){
                    } completion:^(BOOL finished){
                        [UIView beginAnimations:@"animation" context:nil];
                        [UIView setAnimationDuration:0.7];
                        [UIView setAnimationBeginsFromCurrentState:YES];
                        [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft
                                               forView:viewController.view
                                                 cache:NO];
                        [UIView commitAnimations];
                    }];
}

2 - Bunu ViewController.m dosyanızın her birine yazın

-(void)viewWillAppear:(BOOL)animated
{
    [UIView transitionWithView:self.view
                      duration:1.0
                       options:UIViewAnimationOptionAllowUserInteraction | UIViewAnimationOptionTransitionCrossDissolve
                    animations:^(void){
                        [super viewWillAppear:YES];
                    } completion:^(BOOL finished){
                    }];
}

umarım bu yardım ...!

Tıklanan Öğeye bağlı olarak animasyon uygulayabilirsiniz - Bu örnekte, tıklanan dizin önceki seçili dizinden> ise flipFromLeft'i ve tıklanan dizin önceki seçilen dizinden <ise flipFromRight'ı kullanırız. İşte Swift 4: UITabBarControllerDelegate yöntemini uygulayın

func tabBarController(_ tabBarController: UITabBarController, shouldSelect viewController: UIViewController) -> Bool {

    let fromView: UIView = tabBarController.selectedViewController!.view
    let toView: UIView = viewController.view

    if fromView == toView {
        return false
    }

    if let tappedIndex = tabBarController.viewControllers?.index(of: viewController) {
        if tappedIndex > tabBarController.selectedIndex {
            UIView.transition(from: fromView, to: toView, duration: 0.5, options: UIViewAnimationOptions.transitionFlipFromLeft, completion: nil)
        } else {
            UIView.transition(from: fromView, to: toView, duration: 0.5, options: UIViewAnimationOptions.transitionFlipFromRight, completion: nil)
        }
    }
    return true
}

drekka'nın cevabı gerçekten harika. Kaydırma geçişini biraz değiştirdim, böylece animasyon Apple'ın itme animasyonuna benziyordu. İlk animasyonun tamamlanmasının ardından bu kayma efektinin doğru görünmesi için ek bir animasyon ekledim.

// Disable interaction during animation to avoids bugs.
self.tabBarController.view.userInteractionEnabled = NO;

// Get the views.
UIView * fromView = tabBarController.selectedViewController.view;
UIView * toView = [[tabBarController.viewControllers objectAtIndex:controllerIndex] view];

// Get the size of the view area.
CGRect viewSize = fromView.frame;
BOOL scrollRight = controllerIndex > tabBarController.selectedIndex;

// Add the to view to the tab bar view.
[fromView.superview addSubview:toView];
[fromView.superview addSubview:fromView];

self.tabBarController.selectedIndex = 0;

// Position it off screen.
toView.frame = CGRectMake((scrollRight ? (viewSize.size.width *.25) : -(viewSize.size.width * .25 )), viewSize.origin.y, viewSize.size.width, viewSize.size.height);

[UIView animateWithDuration:0.25 
             animations: ^{
                 // Animate the views on and off the screen.
                 [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
                 fromView.frame = CGRectMake(viewSize.size.width * .95, viewSize.origin.y, viewSize.size.width, viewSize.size.height);
                 toView.frame = CGRectMake((viewSize.origin.x * .90), viewSize.origin.y, viewSize.size.width, viewSize.size.height);
             }

             completion:^(BOOL finished) {
                 if (finished) {
                     // Being new animation.
                     [UIView animateWithDuration:0.2
                                          animations: ^{
                                              [UIView setAnimationCurve:UIViewAnimationCurveLinear];
                                              fromView.frame = CGRectMake(viewSize.size.width, viewSize.origin.y, viewSize.size.width, viewSize.size.height);
                                              toView.frame = CGRectMake((viewSize.origin.x), viewSize.origin.y, viewSize.size.width, viewSize.size.height);
                                          }
                                          completion:^(BOOL finished) {
                                              if (finished) {
                                                  // Remove the old view from the tabbar view.
                                                  [fromView removeFromSuperview];
                                                  // Restore interaction.
                                                  self.tabBarController.view.userInteractionEnabled = YES;
                                              }
                                          }];
                 }
             }];

Bir düğmeye basıldığında iki çocuk görünümü denetleyicisi arasında çevirme geçişi kullanmak istedim ve bunu şu şekilde başardım:

-(IBAction)flipViewControllers:(id)sender{
    NSUInteger index = self.selectedIndex;
    index++;
    if(index >= self.childViewControllers.count){
        index = 0;
    }

    self.selectedIndex = index;

    [UIView beginAnimations:nil context:nil];
    [UIView setAnimationDuration:0.75];
    [UIView setAnimationTransition:index % 2 ? UIViewAnimationTransitionFlipFromLeft : UIViewAnimationTransitionFlipFromRight
                           forView:self.view
                             cache:YES];
    [UIView commitAnimations];
}

Ayrıca arka plan rengini siyaha ayarladım, benim durumumda bunu navigationController.view.backgroundColor ayarını yaparak yaptım, ancak sizin durumunuzda, uygulama temsilcisinde kolayca ayarlanabilen window.backgroundColor olabilir.

Sekmeler arasındaki geçişleri canlandırmak için çalışma kodum ( 3 sekme için , daha fazla denemedim !!). Esas olarak drekka'nın çözümüne dayanmaktadır, ancak zaten tabbar'ın delege yönteminde uygulanmıştır, bu yüzden sadece kopyalayıp yapıştırırsanız işi yapmalıdır .. (asla bilemezsiniz!)

-(BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController {

// Important! We validate that the selected tab is not the current tab, to avoid misplacing views
if (tabBarController.selectedViewController == viewController) {
    return NO;
}

// Find the selected view's index
NSUInteger controllerIndex = 0;
for (UIViewController *vc in tabBarController.viewControllers) {
    if (vc == viewController) {
        controllerIndex = [tabBarController.viewControllers indexOfObject:vc];
    }
}

CGFloat screenWidth = SCREEN_SIZE.width;

// Note: We must invert the views according to the direction of the scrolling ( FROM Left TO right or FROM right TO left )
UIView * fromView = tabBarController.selectedViewController.view;
UIView * toView = viewController.view;

[fromView.superview addSubview:toView];
CGRect fromViewInitialFrame = fromView.frame;
CGRect fromViewNewframe = fromView.frame;

CGRect toViewInitialFrame = toView.frame;

if ( controllerIndex > tabBarController.selectedIndex ) {
// FROM left TO right ( tab0 to tab1 or tab2 )

    // The final frame for the current view. It will be displaced to the left
    fromViewNewframe.origin.x = -screenWidth;
    // The initial frame for the new view. It will be displaced to the left
    toViewInitialFrame.origin.x = screenWidth;
    toView.frame = toViewInitialFrame;

} else {
// FROM right TO left ( tab2 to tab1 or tab0 )

    // The final frame for the current view. It will be displaced to the right
    fromViewNewframe.origin.x = screenWidth;
    // The initial frame for the new view. It will be displaced to the right
    toViewInitialFrame.origin.x = -screenWidth;
    toView.frame = toViewInitialFrame;
}

[UIView animateWithDuration:0.2 animations:^{
    // The new view will be placed where the initial view was placed
    toView.frame = fromViewInitialFrame;
    // The initial view will be place outside the screen bounds
    fromView.frame = fromViewNewframe;

    tabBarController.selectedIndex = controllerIndex;

    // To prevent user interaction during the animation
    [[UIApplication sharedApplication] beginIgnoringInteractionEvents];

} completion:^(BOOL finished) {

    // Before removing the initial view, we adjust its frame to avoid visual lags
    fromView.frame = CGRectMake(0, 0, fromView.frame.size.width, fromView.frame.size.height);
    [fromView removeFromSuperview];

    [[UIApplication sharedApplication] endIgnoringInteractionEvents];
}];

return NO;

}

Bu benim için Swift 3'te çalışıyor:

func tabBarController(_ tabBarController: UITabBarController, shouldSelect viewController: UIViewController) -> Bool {

    if let fromView = tabBarController.selectedViewController?.view, let toView = viewController.view {

        if fromView == toView {
            return false
        }

        UIView.transition(from: fromView, to: toView, duration: 0.2, options: .transitionCrossDissolve) { (finished) in
        }
    }

    return true
}

@samwize Cevap Swift'e çevrildi 3 - Bunda 2 beğenme , soldan sağa bir sayfa efekti yaratır:

func animateToTab(toIndex: Int) {
        let tabViewControllers = viewControllers!
        let fromView = selectedViewController!.view
        let toView = tabViewControllers[toIndex].view
        let fromIndex = tabViewControllers.index(of: selectedViewController!)

        guard fromIndex != toIndex else {return}

        // Add the toView to the tab bar view
        fromView?.superview!.addSubview(toView!)

        // Position toView off screen (to the left/right of fromView)
        let screenWidth = screenSize.width
        let scrollRight = toIndex > fromIndex!
        let offset = (scrollRight ? screenWidth : -screenWidth)
        toView?.center = CGPoint(x: (fromView?.center.x)! + offset, y: (toView?.center.y)!)

        // Disable interaction during animation
        view.isUserInteractionEnabled = false

        UIView.animate(withDuration: 0.5, delay: 0.0, usingSpringWithDamping: 1, initialSpringVelocity: 0, options: UIViewAnimationOptions.curveEaseOut, animations: {

            // Slide the views by -offset
            fromView?.center = CGPoint(x: (fromView?.center.x)! - offset, y: (fromView?.center.y)!);
            toView?.center   = CGPoint(x: (toView?.center.x)! - offset, y: (toView?.center.y)!);

        }, completion: { finished in

            // Remove the old view from the tabbar view.
            fromView?.removeFromSuperview()
            self.selectedIndex = toIndex
            self.view.isUserInteractionEnabled = true
        })
    }

@ samwize'nin cevabı Swift 5 için güncellendi:

Tüm sekme değişikliklerinin animasyona sahip olmasını istiyorsanız, bir UITabBarControllerDelegate kullanın ve bu yöntemi uygulayın:

func tabBarController(_ tabBarController: UITabBarController, shouldSelect viewController: UIViewController) -> Bool {
  let tabViewControllers = tabBarController.viewControllers!
  guard let toIndex = tabViewControllers.indexOf(value:viewController) else {
    return false
  }
  animateToTab(toIndex: toIndex, fadeOutFromView: false, fadeInToView: false)
  return true
}

Aşağıdakileri arayarak sekmeyi animasyonlu programlı olarak değiştirin animateToTab:

func animateToTab(toIndex: Int, fadeOutFromView: Bool, fadeInToView: Bool) {
  let tabViewControllers = viewControllers!
  let fromView = selectedViewController!.view
  let toView = tabViewControllers[toIndex].view
  let fromIndex = tabViewControllers.indexOf(value:selectedViewController!)
  guard fromIndex != toIndex else {return}

  // Add the toView to the tab bar view
  fromView!.superview!.addSubview(toView!)

  // Position toView off screen (to the left/right of fromView)
  let screenWidth = UIScreen.main.bounds.width
  let scrollRight = toIndex > fromIndex!;
  let offset = (scrollRight ? screenWidth : -screenWidth)
  toView!.center = CGPoint(x: fromView!.center.x + offset, y: toView!.center.y)

  // Disable interaction during animation
  view.isUserInteractionEnabled = false
  if fadeInToView {
    toView!.alpha = 0.1
  }

  UIView.animate(withDuration: 0.5, delay: 0.0, usingSpringWithDamping: 1, initialSpringVelocity: 0, options: [.curveEaseOut], animations: {

    if fadeOutFromView {
      fromView!.alpha = 0.0
    }

    if fadeInToView {
      toView!.alpha = 1.0
    }

    // Slide the views by -offset
    fromView!.center = CGPoint(x: fromView!.center.x - offset, y: fromView!.center.y);
    toView!.center   = CGPoint(x: toView!.center.x - offset, y: toView!.center.y);

  }, completion: { finished in
    // Remove the old view from the tabbar view.
    fromView!.removeFromSuperview()
    self.selectedIndex = toIndex
    self.view.isUserInteractionEnabled = true
  })
}

Swift 4+

Sen UITabBarControllerDelegateyöntem, böyle olmalı

func tabBarController(_ tabBarController: UITabBarController, shouldSelect viewController: UIViewController) -> Bool {

    animateToTab(toIndex: (tabBarController.viewControllers?.index(of: viewController))!)
    return true
}

Ve yöntem,

func animateToTab(toIndex: Int) {
    let tabViewControllers = viewControllers!
    let fromView = selectedViewController!.view
    let toView = tabViewControllers[toIndex].view
    let fromIndex = tabViewControllers.index(of: selectedViewController!)

    guard fromIndex != toIndex else {return}

    // Add the toView to the tab bar view
    fromView!.superview!.addSubview(toView!)

    // Position toView off screen (to the left/right of fromView)
    let screenWidth = UIScreen.main.bounds.size.width;
    let scrollRight = toIndex > fromIndex!;
    let offset = (scrollRight ? screenWidth : -screenWidth)
    toView!.center = CGPoint(x: fromView!.center.x + offset, y: toView!.center.y)

    // Disable interaction during animation
    view.isUserInteractionEnabled = false

    UIView.animate(withDuration: 0.5, delay: 0.0, usingSpringWithDamping: 1, initialSpringVelocity: 0, options: UIViewAnimationOptions.curveEaseOut, animations: {

        // Slide the views by -offset
        fromView!.center = CGPoint(x: fromView!.center.x - offset, y: fromView!.center.y);
        toView!.center   = CGPoint(x: toView!.center.x - offset, y: toView!.center.y);

    }, completion: { finished in

        // Remove the old view from the tabbar view.
        fromView!.removeFromSuperview()
        self.selectedIndex = toIndex
        self.view.isUserInteractionEnabled = true
    });

}