Allows publish-subscribe-style communication between components without requiring the components to explicitly be aware of each other
- simplifies the communication between components
- decouples event senders and receivers
- avoids complex and error-prone dependencies and life cycle issues
- makes your code simpler
- is fast
- is tiny
- Thread-safe
pod 'SwiftEventBus', :tag => '5.1.0', :git => 'https://github.com/cesarferreira/SwiftEventBus.git'github "cesarferreira/SwiftEventBus" == 5.1.05.+forswift 53.+forswift 4.22.+forswift 31.1.0forswift 2.2
Subscribers implement event handling methods that will be called when an event is received.
SwiftEventBus.onMainThread(target, name: "someEventName") { result in // UI thread } // or SwiftEventBus.onBackgroundThread(target, name:"someEventName") { result in // API Access }Post an event from any part of your code. All subscribers matching the event type will receive it.
SwiftEventBus.post("someEventName")--
Post event
SwiftEventBus.post("personFetchEvent", sender: Person(name:"john doe"))Expecting parameters
SwiftEventBus.onMainThread(target, name:"personFetchEvent") { result in let person : Person = result.object as Person println(person.name) // will output "john doe" }Quoting the official Apple documentation:
Regular notification centers deliver notifications on the thread in which the notification was posted
Regarding this limitation, @nunogoncalves implemented the feature and provided a working example:
@IBAction func clicked(sender: AnyObject) { count++ SwiftEventBus.post("doStuffOnBackground") } @IBOutlet weak var textField: UITextField! var count = 0 override func viewDidLoad() { super.viewDidLoad() SwiftEventBus.onBackgroundThread(self, name: "doStuffOnBackground") { notification in println("doing stuff in background thread") SwiftEventBus.postToMainThread("updateText") } SwiftEventBus.onMainThread(self, name: "updateText") { notification in self.textField.text = "\(self.count)" } } //Perhaps on viewDidDisappear depending on your needs override func viewWillDisappear(_ animated: Bool) { super.viewWillDisappear(animated) SwiftEventBus.unregister(self) }--
Remove all the observers from the target
SwiftEventBus.unregister(target)Remove observers of the same name from the target
SwiftEventBus.unregister(target, "someEventName")