Difference between revisions of "Swift:Notification Observer Using NSNotificationCenter"

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(Created page with "Listen notification in swift <pre class="brush:swift"> func tweetSent(notification: NSNotification) { let newTweet:Dictionary<String, Tweet> = notification.userInfo as Dic...")
(No difference)

Revision as of 04:08, 23 March 2015

Listen notification in swift

func tweetSent(notification: NSNotification) {
    let newTweet:Dictionary<String, Tweet> = notification.userInfo as Dictionary<String, Tweet>
}
NSNotificationCenter.defaultCenter().addObserver(self, selector: "tweetSent:", name: "newTweetNotification", object: nil)

Send/Post notification in swift

var userInfo: Dictionary<String, Tweet> = ["tweet": newTweet]
NSNotificationCenter.defaultCenter().postNotificationName("newTweetNotification", object: nil, userInfo: userInfo)

Remove notification observer

deinit {
    NSNotificationCenter.defaultCenter().removeObserver(self)
}