iPhone开发 Swift - NSNotification 通知

Swift创建Notification通知

1. 创建一个SingleView Application
2. 打开AppDelegate.swift，在方法

application(application:UIApplication,didFinishLaunchingWithOptions launchOptions: NSDictionary?)

中输入代码：

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {

//设置Notification 的类型

let types:UIUserNotificationType = UIUserNotificationType.Alert | UIUserNotificationType.Badge

//设置Notification的设置项，其中categories参数用来设置Notification的类别

let mySettings: UIUserNotificationSettings = UIUserNotificationSettings(forType: types, categories: nil);

//注册UserNotification

UIApplication.sharedApplication().registerUserNotifiationSettings(mySettings)

return true

}

1. 配置不同的Actions，在方法

application(application:UIApplication,didFinishLaunchingWithOptions launchOptions: NSDictionary?)内的代码开始部分输入以下代码

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {

//define Actions

var firstAction: UIMutableUserNotificationAction = UIMutableUserNotificationAction();

// The unique identifier for this action

fistAction.identifier = “FIRST_ACTION”;

// The localized title to display for this action

firstAction.title = “First Action”;

//define action’s activationMode, // How the application should be activated in response to the action

firstAction.activationMode = UIUserNotificationActivationMode.Background// 当点击的时候不启动程序，在后台处理

//define action’s destructive // Whether this action should be indicated as destructive when displayed.

firstAction.destructive = true

//define authentication // Whether this action is secure and should require unlocking before being performed. If the activation mode is UIUserNotificationActivationModeForeground, then the action is considered secure and this property is ignored.

firstAction.authenticationRequired = false//不需要用户解锁手机即可以处理该Notification

var secondAction:UIMutableUserNotificationAction = UIMutableUserNotificationAction()

secondAction.identifier = "SECOND_ACTION";

secondAction.title = "Second Action";

secondAction.activationMode = UIUserNotificationActivationMode.Foreground

secondAction.destructive = false

secondAction.authenticationRequired = false

var thirdAction:UIMutableUserNotificationAction = UIMutableUserNotificationAction()

thirdAction.identifier = "THIRD_ACTION";

thirdAction.title = "Third Action";

thirdAction.activationMode = UIUserNotificationActivationMode.Background

thirdAction.destructive = false

thirdAction.authenticationRequired = false

//Category

var firstCategory: UIMutableUserNotificationCategory = UIMutableUserNotificationCategory()

firstCategory.identifier = "FIRST_CATEGORY";

let defaultActions:NSArray = [firstAction, secondAction, thirdAction];

let minimalActions:NSArray = [firstAction, secondAction];

// Sets the UIUserNotificationActions in the order to be displayed for the specified context

firstCategory.setActions(defaultActions, forContext: UIUserNotificationActionContext.Default);// // the default context of a notification action

firstCategory.setActions(minimalActions, forContext: UIUserNotificationActionContext.Minimal);//Minimal // the context of a notification action when space is limited

let categories: NSSet = NSSet(objects: firstCategory)

//设置Notification 的类型

let types:UIUserNotificationType = UIUserNotificationType.Alert | UIUserNotificationType.Badge

//设置Notification的设置项，其中categories参数用来设置Notification的类别

let mySettings: UIUserNotificationSettings = UIUserNotificationSettings(forType: types, categories: nil);

//注册UserNotification

UIApplication.sharedApplication().registerUserNotifiationSettings(mySettings)

return true

}

4. 打开ViewController.swift文件，在ViewDidLoad方法中输入以下代码

override func viewDidLoad() {

super.viewDidLoad()

//define notification center

NSNotificationCenter.defaultCenter().addObserver(self, selector: “TestShape:”, name: “actionOne”, object: nil)

NSNotificationCenter.defaultCenter().addObserver(self, selector:”TestMessage:”, name: “actionTwo”, object: nil)

//定义一个触发Notification的程序
var dateComp: NSDateComponents  =
NSDateComponents()

dateComp.year = 2014

dateComp.month = 09

dateComp.day = 09

dateComp.hour = 11

dateComp.minute = 11

dateComp.timeZone = NSTimeZone.systemTimeZone()

var calendar: NSCalendar = NSCalendar(calendarIdentifier:
NSGregorianCalendar)

var date: NSDate = calendar.dateFromComponents(dateComp)

//define Location notification

var notification: UILocalNotification =
UILocalNotification()

notification.category = “FIRST_CATEGORY”;

notification.alertBody = “This is a notification”

notification.fireDate = date

//fire notification

UIApplication.shareApplication().scheduleLocalNotification(notification)

}

func TestShape(notification: NSNotification) {

UIView *view = UIView(frame:
CGRectMake(100,100,100,100));

view.backgroundColor = UIColor.blackColor()

Self.view.addSubview(view)

}

func TestMessage(notification: NSNotification) {

var message:
UIAlertController = UIAlertController(title: “Notification Message”, message: “Hello,
this is an alert message”, preferredStyle: UIAlertControllerStyle.Alert)

message.addAction(UIAlertAction(title: “OK”, style:
UIAlertActionStyle.Default, handle: nil))

self.presentViewController(message, animated: true,
completion: nil)

}

5. 回到AppDelegate.swift，并添加以下方法

func
application(application: UIApplication!, handleActionWithIdentifier identifier: String!,
forLocalNotification notification: UILocalNotification!, completionHandler: (() -> Void)!) {

if identifier ==
“FIRST_ACTION” {

NSNotificationCenter.defaultCenter().postNotificationName(“actionOne”,
object: nil)

}

else if identifier == “SECOND_ACTION” {

NSNotificationCenter.defaultCenter().postNotificationName(“actionTwo”,
object: nil)

}

completionHandler()

}