Unrecognized Selector for SideBar Instance - ios

Question

I'm asking this question because the answer I received in this question: How Do I Initialize Two Instances of NSObject in the same ViewController - Swift
brought me in this direction. Whether I subclass as NSObject or UIViewController, I still receive the unrecognized selector when I change my code to what's below.
I'm still trying to be able to create a left and right SideBar. However, I cannot even get one SideBar to load now. I receive an error [UIViewController Center]: unrecognized selector sent to instance xxxxx.
This question is different from the other unrecognized selector instance questions I've seen because I'm not dealing with a button and have no outlets since everything is done programmatically. Hence, I can't specify a subclass that links to a UIViewController in the storyboard.
I feel like once I solve the selector issue the code will work. As the code is right now, the application compiles fine. The problem is the runtime error that I receive. I can provide information from the debugger if it's necessary.
Fwiw, it seems like the runtime is recognizing that I have a center, left, and right viewcontroller from the error message.
I haven't included the RightSideBar code because I think if the left SideBar runs the RightSideBar will run when I add the solution. I want to keep the code you have to read through as brief as possible.
Last thing to note, I'm reaching all of my print statements. I actually print through to the point where it says "I should be showing the sideBar".
Here is the code for the SideBar:
//optional delegate methods that select when the sidebar opens and closes.
#objc protocol SideBarDelegate : class {
func sideBarDidSelectButtonAtIndex (itemIndex: Int)
optional func sideBarWillClose()
optional func sideBarWillOpen()
}
//this class sets up the actual sidebar.
class SideBar: UIViewController, SidebarTableViewControllerDelegate {
//width of the bar, tableview setup, and views for the sidebar
let barWidth:CGFloat = 175.0
let sideBarTableViewTopInset:CGFloat = 25.0
let sideBarContainerView:UIViewController = UIViewController()
let sideBarTableViewController:SidebarTableViewController = SidebarTableViewController()
var originView:UIViewController?
//var for dynamic effect and controlling the sidebar
var animator:UIDynamicAnimator!
weak var delegate:SideBarDelegate?
var isSideBarOpen:Bool = false
//initializer for the "SideBar" class.
required init(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
}
override init(nibName NibNameOrNil:String!, bundle nibBundleOrNil:NSBundle!) {
super.init(nibName: nil, bundle: nil)
}
convenience init(){
self.init(nibName: nil, bundle: nil)
}
//initializer for the tableView of menu items.
init(sourceView: UIViewController, menuItems: Array<String>, menuImages: [UIImage]){
self.originView = sourceView
self.sideBarTableViewController.tableData = menuItems
self.sideBarTableViewController.imageData = menuImages
println("set initialization values")
super.init(nibName: nil, bundle: nil)
//initializing the views and animation for the menu.
setupSideBar()
animator = UIDynamicAnimator(referenceView: originView!.view)
println("finished initialization")
//swipe gesture recognition for opening the menu.
let showGestureRecognizer:UISwipeGestureRecognizer = UISwipeGestureRecognizer(target: self, action: "handleSwipe:")
showGestureRecognizer.direction = UISwipeGestureRecognizerDirection.Right
originView!.view.addGestureRecognizer(showGestureRecognizer)
let hideGestureRecognizer:UISwipeGestureRecognizer = UISwipeGestureRecognizer(target: self, action: "handleSwipe:")
hideGestureRecognizer.direction = UISwipeGestureRecognizerDirection.Left
originView!.view.addGestureRecognizer(hideGestureRecognizer)
}
override func viewDidLoad() {
println("view loaded")
}
//this function handles the direction of swipes
func handleSwipe(recognizer: UISwipeGestureRecognizer){
if recognizer.direction == UISwipeGestureRecognizerDirection.Left {
showSideBar(false)
delegate?.sideBarWillClose?()
println("closed the sideBar")
} else {
println("opened the sideBar")
showSideBar(true)
delegate?.sideBarWillOpen?()
}
}
//function for setting up the sidebar.
func setupSideBar () {
println("setup sideBar")
//setting up the frame/outline of the side bar.
sideBarContainerView.view.frame = CGRectMake(-barWidth - 1, originView!.view.frame.origin.y, barWidth, originView!.view.frame.size.height)
//setting up the color of the sidebar.
sideBarContainerView.view.backgroundColor = UIColor.clearColor()
//disables subviews from being confined to the sidebar.
sideBarContainerView.view.clipsToBounds = false
//placing the sidebar in the UIView
originView!.view.addSubview(sideBarContainerView.view)
//adding blur to the menu.
let blurView:UIVisualEffectView = UIVisualEffectView(effect: UIBlurEffect(style: UIBlurEffectStyle.Light))
blurView.frame = sideBarContainerView.view.bounds
sideBarContainerView.view.addSubview(blurView)
//setting up controls for the sidebar
sideBarTableViewController.delegate = self
sideBarTableViewController.tableView.frame = sideBarContainerView.view.bounds
sideBarTableViewController.tableView.clipsToBounds = false
//disabling the scroll feature. Delete to keep the scroll feature.
sideBarTableViewController.tableView.scrollsToTop = false
//This will remove separators in the UITableCell. Delete to keep separators.
sideBarTableViewController.tableView.separatorStyle = UITableViewCellSeparatorStyle.None
//This sets the background color of the sidebar and creates the inset.
sideBarTableViewController.tableView.backgroundColor = UIColor.clearColor()
sideBarTableViewController.tableView.contentInset = UIEdgeInsets(top: sideBarTableViewTopInset, left: 0, bottom: 0, right: 0)
//reloads the sidebar and adds the container view to the sideBarTableViewController.
sideBarTableViewController.tableView.reloadData()
sideBarContainerView.view.addSubview(sideBarTableViewController.tableView)
originView?.addChildViewController(sideBarContainerView)
sideBarContainerView.didMoveToParentViewController(originView)
}
func showSideBar(shouldOpen: Bool){
animator.removeAllBehaviors()
isSideBarOpen = shouldOpen
println("I should be showing the sideBar")
//simple if and else statements to define the direction of animation and intensity of animation
let gravityX:CGFloat = (shouldOpen) ? 0.5 : -0.5
let magnitude:CGFloat = (shouldOpen) ? 20 : -20
let boundaryX:CGFloat = (shouldOpen) ? barWidth : -barWidth - 1
//controls the behavior of the animation.
let gravityBehavior: UIGravityBehavior = UIGravityBehavior(items: [sideBarContainerView])
gravityBehavior.gravityDirection = CGVectorMake(gravityX, 0)
animator.addBehavior(gravityBehavior)
let collisionBehavior: UICollisionBehavior = UICollisionBehavior(items: [sideBarContainerView])
collisionBehavior.addBoundaryWithIdentifier("sideBarBoundary", fromPoint: CGPointMake(boundaryX, 20), toPoint: CGPointMake(boundaryX, originView!.view.frame.size.height))
animator.addBehavior(collisionBehavior)
let pushBehavior:UIPushBehavior = UIPushBehavior(items: [sideBarContainerView], mode: UIPushBehaviorMode.Instantaneous)
pushBehavior.magnitude = magnitude
animator.addBehavior(pushBehavior)
let sideBarBehavior:UIDynamicItemBehavior = UIDynamicItemBehavior(items: [sideBarContainerView])
sideBarBehavior.elasticity = 0.3
animator.addBehavior(sideBarBehavior)
}
func sidebarControlDidSelectRow(indexPath: NSIndexPath) {
delegate?.sideBarDidSelectButtonAtIndex(indexPath.row)
}
}
Here is the Home ViewController:
class Home: UIViewController, SideBarDelegate {
//*** Must put logout code into the logout button it should log the user out if they press it ***
var sideBar:SideBar = SideBar()
var homeImage = UIImage(named: "Shine Home")
var profileImage = UIImage(named: "Shine Profile")
var shareImage = UIImage(named: "Shine Share")
var aboutImage = UIImage(named: "Shine About")
var helpImage = UIImage(named: "Shine Help")
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
//setting up the menu items for the sidebar.
sideBar = SideBar(sourceView: self, menuItems: ["Home", "Profile", "Share", "About", "Help"], menuImages: [homeImage!, profileImage!, shareImage!, aboutImage!, helpImage!])
sideBar.delegate = self
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func sideBarDidSelectButtonAtIndex(itemIndex: Int) {
switch itemIndex {
case 0:
let vc = storyboard?.instantiateViewControllerWithIdentifier("Home") as! Home
self.navigationController?.pushViewController(vc, animated: true)
case 1:
performSegueWithIdentifier("profile", sender: self)
case 2:
performSegueWithIdentifier("share", sender: self)
case 3:
performSegueWithIdentifier("about", sender: self)
case 4:
performSegueWithIdentifier("help", sender: self)
default:
break
}
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
}

Answer 1

This situation of unrecognized selector stems from the runtime not knowing what specific object you want to activate.
The runtime sees sideBarContainerView object, which is acceptable for the compiler.
The problem is that your animation behavior is for views. Your UIViewController Object has not descended into UIViews. You need to add .view to all sideBarContainerView in your showSideBar function.
If you breakdown your function and just use isSideBarOpen as the bool for your if statements in the constants and place it in the initialization of your menu then you'll get the Selector error immediately.
That's just a second way to point to fact that the error is past your last print statement "I should be showing SideBar.
If you do that then your menu will load. So far, I have no solution for getting both menus to initialize as a left and right menu.