ios - 使用滑动手势时TabController消失

我有一个带有3个标签的应用。我想向右或向左滑动以转到另一个选项卡。

我的代码：

//Swipe Between Tabs
    let rightSwipe = UISwipeGestureRecognizer(target: self, action: Selector("handleSwipes:"))
    let leftSwipe = UISwipeGestureRecognizer(target: self, action: Selector("handleSwipes:"))
    rightSwipe.direction = .Right
    leftSwipe.direction = .Left
    view.addGestureRecognizer(rightSwipe)
    view.addGestureRecognizer(leftSwipe)
    //end Swipe

实现它的功能是

func handleSwipes(sender:UISwipeGestureRecognizer) {
    if (sender.direction == .Left) {
        let storyboard = UIStoryboard(name: "Main", bundle: nil)
        let vc = storyboard.instantiateViewControllerWithIdentifier("PantryList")
        let navigationController = UINavigationController(rootViewController: vc)

        self.presentViewController(navigationController, animated: true, completion: nil)
    }
    if (sender.direction == .Right) {
        let storyboard = UIStoryboard(name: "Main", bundle: nil)
        let vc = storyboard.instantiateViewControllerWithIdentifier("ToDoList")
        let navigationController = UINavigationController(rootViewController: vc)

        self.presentViewController(navigationController, animated: true, completion: nil)
    }
}

我的问题是，使用滑动时底部的tabBarController消失了。从我发现的结果来看，它与“ presentViewController”方法有关。这是造成它的原因吗，有没有办法做到而又不会失去tabBarController？如果不需要，我真的不想使用prepareForSegueWithIdentifier。除非那是必须要做的，否则这似乎是需要完成的工作。

最佳答案

if (sender.direction == .Right) {
    self.navigationController.tabBarController.selectedIndex = 1
}

关于ios - 使用滑动手势时TabController消失，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/35062009/