Is this how I should be opening push notifications? - ios

Question

When the notification is clicked on I want it to open a specific page, but for some reason it keeps crashing with the error fatal error: unexpectedly found nil while unwrapping an Optional value. Why is this error happening? Am I opening the page correctly?
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
if let launchOptions = launchOptions as? [String : AnyObject] {
if let notificationDictionary = launchOptions[UIApplicationLaunchOptionsRemoteNotificationKey] as? [NSObject : AnyObject] {
self.application(application, didReceiveRemoteNotification: notificationDictionary)
let text = launchOptions["aps"]!["alert"]
print(text)
let viewController = storyBoard.instantiateViewControllerWithIdentifier("Player") as UIViewController
self.window?.rootViewController = viewController
}
}
return true
}
func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject]) {
PFPush.handlePush(userInfo)
let text = userInfo["aps"]!["alert"]
print(text)
let viewController = storyBoard.instantiateViewControllerWithIdentifier("Player") as UIViewController
self.window?.rootViewController = viewController
}

Answer 1

Hope this will help :
Find visible view controller when receive Notification.
func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject]) {
let currentViewControlelr :UIViewController = topViewController(UIApplication.sharedApplication().keyWindow?.rootViewController)!;
if(currentViewController == PlayerViewController()){
//Implement other function according to your needs
}else{
//If any other view controller at top of stack, then create object of Player View controller and push to that
let playerViewController = storyBoard.instantiateViewControllerWithIdentifier("Player") as UIViewController
currentViewControlelr.navigationController?.pushViewController(playerViewController, animated: true)
NSLog("UserInfo : %#",userInfo);
}
Helper Method to get Top ViewController which is visible at the moment
func topViewController(base: UIViewController? ) -> UIViewController? {
if let nav = base as? UINavigationController {
return topViewController(nav.visibleViewController)
}
if let tab = base as? UITabBarController {
if let selected = tab.selectedViewController {
return topViewController(selected)
}
}
if let presented = base?.presentedViewController {
return topViewController(presented)
}
return base
}