UITabbarController左右滑动切换标签页

参考链接：http://stackoverflow.com/questions/12533976/ios-swipe-left-right-between-tabs-possible

http://stackoverflow.com/questions/5161730/iphone-how-to-switch-tabs-with-an-animation

每个Tabbar ViewController都要添加如下代码，建议在基类中添加：

ViewDidLoad

UISwipeGestureRecognizer *swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(tappedRightButton:)];

    [swipeLeft setDirection:UISwipeGestureRecognizerDirectionLeft];

    [self.view addGestureRecognizer:swipeLeft];

    

    UISwipeGestureRecognizer *swipeRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(tappedLeftButton:)];

    [swipeRight setDirection:UISwipeGestureRecognizerDirectionRight];

    [self.view addGestureRecognizer:swipeRight];

再添加2个函数，包含切换动画效果：

- (IBAction) tappedRightButton:(id)sender

{

    NSUInteger selectedIndex = [self.tabBarController selectedIndex];

    

    NSArray *aryViewController = self.tabBarController.viewControllers;

    if (selectedIndex < aryViewController.count - 1) {

        UIView *fromView = [self.tabBarController.selectedViewController view];

        UIView *toView = [[self.tabBarController.viewControllersobjectAtIndex:selectedIndex + 1] view];

        [UIView transitionFromView:fromView toView:toView duration:0.5foptions:UIViewAnimationOptionTransitionFlipFromRight completion:^(BOOLfinished) {

            if (finished) {

                [self.tabBarController setSelectedIndex:selectedIndex + 1];

            }

        }];

    }

    

}

- (IBAction) tappedLeftButton:(id)sender

{

    NSUInteger selectedIndex = [self.tabBarController selectedIndex];

    

    if (selectedIndex > 0) {

        UIView *fromView = [self.tabBarController.selectedViewController view];

        UIView *toView = [[self.tabBarController.viewControllersobjectAtIndex:selectedIndex - 1] view];

        [UIView transitionFromView:fromView toView:toView duration:0.5foptions:UIViewAnimationOptionTransitionFlipFromLeft completion:^(BOOLfinished) {

            if (finished) {

                [self.tabBarController setSelectedIndex:selectedIndex - 1];

            }

        }];

    }

}