Swift - 本地消息的推送通知(附样例)

时间:2023-11-22 13:43:38

使用UILocalNotification可以很方便的实现消息的推送功能。我们可以设置这个消息的推送时间,推送内容等。

当推送时间一到,不管用户在桌面还是其他应用中,屏幕上方会都显示出推送消息。

1,推送消息的发送

 Swift - 本地消息的推送通知(附样例)  Swift - 本地消息的推送通知(附样例)

--- AppDelegate.swift ---

 
import UIKit
@UIApplicationMain
class AppDelegateUIResponderUIApplicationDelegate {
    var window: UIWindow?
    func application(application: UIApplication,
        didFinishLaunchingWithOptions
launchOptions: [
NSObjectAnyObject]?)
-> 
Bool {
        //开启通知
        let settings
UIUserNotificationSettings(forTypes:
[.
Alert,
.
Badge,
.
Sound],
            categories: nil)
        application.registerUserNotificationSettings(settings)
        return true
    }
    func applicationWillResignActive(application: UIApplication)
{
    }
    func applicationDidEnterBackground(application: UIApplication)
{
    }
    func applicationWillEnterForeground(application: UIApplication)
{
    }
    func applicationDidBecomeActive(application: UIApplication)
{
    }
    func applicationWillTerminate(application: UIApplication)
{
    }
}

--- ViewController.swift ---

 
import UIKit
class ViewControllerUIViewController {
    override func viewDidLoad()
{
        super.viewDidLoad()
         
        //发送通知消息
        scheduleNotification(12345);
        //清除所有本地推送
        //UIApplication.sharedApplication().cancelAllLocalNotifications()
    }
     
    //发送通知消息
    func scheduleNotification(itemID:Int){
        //如果已存在该通知消息,则先取消
        cancelNotification(itemID)
         
        //创建UILocalNotification来进行本地消息通知
        let localNotification
UILocalNotification()
        //推送时间(设置为30秒以后)
        localNotification.fireDate
NSDate(timeIntervalSinceNow:
30)
        //时区
        localNotification.timeZone
NSTimeZone.defaultTimeZone()
        //推送内容
        localNotification.alertBody
"来自hangge.com的本地消息"
        //声音
        localNotification.soundName
UILocalNotificationDefaultSoundName
        //额外信息
        localNotification.userInfo
= [
"ItemID":itemID]
        UIApplication.sharedApplication().scheduleLocalNotification(localNotification)
    }
     
    //取消通知消息
    func cancelNotification(itemID:Int){
        //通过itemID获取已有的消息推送,然后删除掉,以便重新判断
        let existingNotification
self.notificationForThisItem(itemID) as UILocalNotification?
        if existingNotification
!= 
nil {
            //如果existingNotification不为nil,就取消消息推送
            UIApplication.sharedApplication().cancelLocalNotification(existingNotification!)
        }
    }
     
    //通过遍历所有消息推送,通过itemid的对比,返回UIlocalNotification
    func notificationForThisItem(itemID:Int)-> UILocalNotification?
{
        let allNotifications
UIApplication.sharedApplication().scheduledLocalNotifications
        for notification in allNotifications!
{
            let info
= notification.userInfo 
as!
[
String:Int]
            let number
= info[
"ItemID"]
            if number
!= 
nil &&
number == itemID {
                return notification as UILocalNotification
            }
        }
        return nil
    }
     
    override func didReceiveMemoryWarning()
{
        super.didReceiveMemoryWarning()
    }
}

2,点击推送消息的响应

收到推送,如果点击推送内容,则会重新进入到App,这个时候会调用AppDelegate中的func
application(application: UIApplication, didReceiveLocalNotification
notification: UILocalNotification)代理方法。
在这个方法中我们可以根据推送的消息内容实现相关的功能。
Swift - 本地消息的推送通知(附样例)

 
func application(application: UIApplication,
    didReceiveLocalNotification
notification: 
UILocalNotification)
{
        //设定Badge数目
        UIApplication.sharedApplication().applicationIconBadgeNumber
= 0
             
        let info
= notification.userInfo 
as!
[
String:Int]
        let number
= info[
"ItemID"]
             
        let alertController
UIAlertController(title: "本地通知",
                message: "消息内容:\(notification.alertBody)用户数据:\(number)",
                preferredStyle: UIAlertControllerStyle.Alert)
        

 
 
          let cancel = UIAlertAction(title: "取消", style: UIAlertActionStyle.Cancel, handler: nil);

alertController.addAction(cancel);

     

        self.window?.rootViewController!.presentViewController(alertController,
                animated: true,
completion: 
nil)
}