Spotlight search doesn't work when app not running - ios

Question

I want to tell first UIViewController that Spotlight opened it. I try to make it by NSNotificationCenter. But I tried several methods and they don't it when I make my key like "spotlightOpen". When I use standard name like UIApplicationDidFinishLaunchingNotification it works for me. Below I wrote several methods which I tried
In
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
NSNotificationCenter.defaultCenter().postNotificationName("selectSong", object: nil)
return true
}
In First controller
NSNotificationCenter.defaultCenter().addObserverForName("selectSong", object: nil, queue: NSOperationQueue.mainQueue()) { (NSNotification) -> Void in
print("Song table is loaded")
}
Still I made it in the first controller. But it too didn't work for me.
NSNotificationCenter.defaultCenter().addObserver(self, selector: "selectedSong", name: "selectSong", object: nil)
func application(application: UIApplication, continueUserActivity userActivity: NSUserActivity, restorationHandler: ([AnyObject]?) -> Void) -> Bool {
print("continueUserActivity")
userDefault.setBool(true, forKey: "applicationDelegateOpen")
if userActivity.activityType == CSSearchableItemActionType {
print("CSSearchableItemActionType")
if let identifier = userActivity.userInfo?[CSSearchableItemActivityIdentifier] {
userDefault.setValue(identifier, forKey: "spotlightIdentifier")
userDefault.setBool(true, forKey: "spotlightBool")
print(identifier)
return true
}
}
return false
}

Answer 1

It's very likely that on a cold launch that your view controller hasn't been initialized yet. You need to temporarily save that notification data until something like loadView or viewDidLoad is called.

Answer 2

In the continueUserActivity callback of UIApplicationDelegate, you can handle the NSUserActivity of type CSSearchableItemActionType for spotlight actions, if you are using the CoreSpotlight API. If you are using NSUserActivity API, you can also handle those in this delegate callback.
You create a core spotlight item with your song ID:
let item = CSSearchableItem(uniqueIdentifier: songId, domainIdentifier: "com.mycompany.song", attributeSet: attributeSet)
// ... Save it and all that
You can handle the spotlight launch using:
func application(application: UIApplication, continueUserActivity userActivity: NSUserActivity, restorationHandler: ([AnyObject]?) -> Void) -> Bool {
if userActivity.activityType == CSSearchableItemActionType {
if let songId = userActivity.userInfo?[CSSearchableItemActivityIdentifier] as? String {
// Do notification with songId
// Or let view controllers know about selected songId
}
}
return true
}

Answer 3

I made it. It works for me
override func viewDidAppear(animated: Bool) {
super.viewDidAppear(animated)
self.tableView.reloadData()
self.tabBarController!.tabBar.hidden = false
fetchFilesFromFolder()
//
checkSpotlightResult()
}
func checkSpotlightResult() {
print("checkSpotlightResult")
// print(arrayForCheckSpot)
// userDefault.setValue(identifier, forKey: "spotlightIdentifier")
// userDefault.setBool(true, forKey: "spotlightBool")
// var boolCheckSpot: Bool!
// var identifierCheckSpot: String!
boolCheckSpot = userDefault.boolForKey("spotlightBool")
if boolCheckSpot != nil {
if boolCheckSpot == true {
identifierCheckSpot = userDefault.valueForKey("spotlightIdentifier") as! String
if arrayForCheckSpot.contains(identifierCheckSpot) {
// print("Array title contains \(identifierCheckSpot)")
let index = arrayForCheckSpot.indexOf(identifierCheckSpot)!
let myIndexPath = NSIndexPath(forRow: index, inSection: 0)
print(myIndexPath)
self.tableView.selectRowAtIndexPath(myIndexPath, animated: true, scrollPosition: .None)
self.performSegueWithIdentifier("listenMusic", sender: self)
userDefault.setBool(false, forKey: "spotlightBool")
}
}
}
}