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我执行导航而不Raywenderlich教程库：左侧导航斯威夫特与UIPanGestureRecognizer
http://www.raywenderlich.com/78568/create-slide-out-navigation-panel-swift
我试图做的代码一些修改不具有右侧导航，但是当我滑动时，我会得到一个黑色的背景，正在打开。
所以我认为，该问题可能是由正在添加UIPanGestureRecognizer并试图用UISwipeGestureRecognizer，但我不知道该怎么做，或者如果它的好办法：
enum SlideOutState{
case BothCollapsed
case LeftPanelExpanded
}
class ContainerViewController: UIViewController {
var centerNavigationController: UINavigationController!
var centerViewController: CenterViewController!
var currentState: SlideOutState = .BothCollapsed
var leftViewController: SidePanelViewController?
let centerPanelExpandedOffset: CGFloat = 60
override func viewDidLoad() {
super.viewDidLoad()
centerViewController = UIStoryboard.centerViewController()
centerViewController.delegate = self
centerNavigationController = UINavigationController(rootViewController: centerViewController)
view.addSubview(centerNavigationController.view)
addChildViewController(centerNavigationController)
centerNavigationController.didMoveToParentViewController(self)
/*
let panGestureRecognizer = UIPanGestureRecognizer(target: self, action: "handlePanGesture:")
centerNavigationController.view.addGestureRecognizer(panGestureRecognizer)
*/
var swipeRight = UISwipeGestureRecognizer(target: self, action: "handleSwipeGesture:")
swipeRight.direction = UISwipeGestureRecognizerDirection.Right
self.view.addGestureRecognizer(swipeRight)
}
}
// MARK: CenterViewController delegate
extension ContainerViewController : CenterViewControllerDelegate{
func toggleLeftPanel() {
let notAlreadyExpanded = (currentState != .LeftPanelExpanded)
if notAlreadyExpanded {
addLeftPanelViewController()
}
animateLeftPanel(shouldExpand: notAlreadyExpanded)
}
func collapseSidePannels() {
switch (currentState) {
case .LeftPanelExpanded:
toggleLeftPanel()
default:
break
}
}
func addLeftPanelViewController() {
if (leftViewController == nil) {
leftViewController = UIStoryboard.leftViewController()
leftViewController!.menus = Menu.allMenu()
addChildSidePanelController(leftViewController!)
}
}
func addChildSidePanelController(sidePanelController: SidePanelViewController) {
sidePanelController.delegate = centerViewController
view.insertSubview(sidePanelController.view, atIndex: 0)
addChildViewController(sidePanelController)
sidePanelController.didMoveToParentViewController(self)
}
func animateLeftPanel(#shouldExpand: Bool) {
if (shouldExpand) {
currentState = .LeftPanelExpanded
animateCenterPanelXPosition(targetPosition: CGRectGetWidth(centerNavigationController.view.frame) - centerPanelExpandedOffset)
} else {
animateCenterPanelXPosition(targetPosition: 0) { finished in
self.currentState = .BothCollapsed
self.leftViewController!.view.removeFromSuperview()
self.leftViewController = nil;
}
}
}
func animateCenterPanelXPosition(#targetPosition: CGFloat, completion: ((Bool) -> Void)! = nil) {
UIView.animateWithDuration(0.5, delay: 0, usingSpringWithDamping: 0.8, initialSpringVelocity: 0, options: .CurveEaseInOut, animations: {
self.centerNavigationController.view.frame.origin.x = targetPosition
}, completion: completion)
}
}
/*
extension ContainerViewController: UIGestureRecognizerDelegate {
// MARK: Gesture recognizer
func handlePanGesture(recognizer: UIPanGestureRecognizer) {
let gestureIsDraggingFromLeftToRight = (recognizer.velocityInView(view).x > 0)
switch(recognizer.state) {
case .Began:
if (currentState == .BothCollapsed) {
if (gestureIsDraggingFromLeftToRight) {
addLeftPanelViewController()
}
}
case .Changed:
recognizer.view!.center.x = recognizer.view!.center.x + recognizer.translationInView(view).x
case .Ended:
if (leftViewController != nil) {
// animate the side panel open or closed based on whether the view has moved more or less than halfway
let hasMovedGreaterThanHalfway = recognizer.view!.center.x > view.bounds.size.width
animateLeftPanel(shouldExpand: hasMovedGreaterThanHalfway)
}
default:
break
}
}
}
*/
extension ContainerViewController: UIGestureRecognizerDelegate {
func handleSwipeGesture(gesture: UIGestureRecognizer) {
if let swipeGesture = gesture as? UISwipeGestureRecognizer{
switch (gesture.state){
case UISwipeGestureRecognizerDirection.Right:
addLeftPanelViewController()
default:
break
}
}
}
}
private extension UIStoryboard {
class func mainStoryboard() -> UIStoryboard { return UIStoryboard(name: "Main", bundle: NSBundle.mainBundle()) }
class func leftViewController() -> SidePanelViewController? {
return mainStoryboard().instantiateViewControllerWithIdentifier("LeftViewController") as? SidePanelViewController
}
class func centerViewController() -> CenterViewController? {
return mainStoryboard().instantiateViewControllerWithIdentifier("CenterViewController") as? CenterViewController
}
}