我的应用程序（Swift 1.2，xcode 6.3）在后台或关闭时不会收到推送通知。但是，当应用程序处于活动状态且处于前台时，我会收到它们。这就是我所做的：
首先，我设置我的应用程序，就像Google教程所说的那样（https://developers.google.com/cloud-messaging/ios/client?ver=swift#receive_downstream_messages）。 这是我的AppDelegate.swift文件： 导入UIKit
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, GGLInstanceIDDelegate {
var window: UIWindow?
// GCM iVars.
var registrationOptions = [String: AnyObject]()
var gcmSenderID: String?
var connectedToGCM = false
var subscribedToTopic = false
var registrationToken: String?
let registrationKey = "onRegistrationCompleted"
let messageKey = "onMessageReceived"
let subscriptionTopic = "/topics/global"
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
// Override point for customization after application launch.
/**************** GCM Google service. ***********************/
// [START_EXCLUDE]
// Configure the Google context: parses the GoogleService-Info.plist, and initializes
// the services that have entries in the file
var configureError:NSError?
GGLContext.sharedInstance().configureWithError(&configureError)
if configureError != nil {
println("Error configuring the Google context: \(configureError)")
}
gcmSenderID = GGLContext.sharedInstance().configuration.gcmSenderID
// [END_EXCLUDE]
// Register for remote notifications
var types: UIUserNotificationType = UIUserNotificationType.Badge | UIUserNotificationType.Alert | UIUserNotificationType.Sound
var settings: UIUserNotificationSettings =
UIUserNotificationSettings( forTypes: types, categories: nil )
application.registerUserNotificationSettings(settings)
application.registerForRemoteNotifications()
// [START start_gcm_service]
GCMService.sharedInstance().startWithConfig(GCMConfig.defaultConfig())
// [END start_gcm_service]
return true
}
func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {
// Start the GGLInstanceID shared instance with the default config and request a registration token to enable reception of notifications
GGLInstanceID.sharedInstance().startWithConfig(GGLInstanceIDConfig.defaultConfig())
registrationOptions = [kGGLInstanceIDRegisterAPNSOption:deviceToken,
kGGLInstanceIDAPNSServerTypeSandboxOption:true]
GGLInstanceID.sharedInstance().tokenWithAuthorizedEntity(gcmSenderID, scope: kGGLInstanceIDScopeGCM, options: registrationOptions, handler: registrationHandler)
}
// [START receive_apns_token_error]
func application( application: UIApplication, didFailToRegisterForRemoteNotificationsWithError
error: NSError ) {
println("Registration for remote notification failed with error: \(error.localizedDescription)")
// [END receive_apns_token_error]
let userInfo = ["error": error.localizedDescription]
NSNotificationCenter.defaultCenter().postNotificationName(
registrationKey, object: nil, userInfo: userInfo)
}
func onTokenRefresh() {
// A rotation of the registration tokens is happening, so the app needs to request a new token.
println("The GCM registration token needs to be changed.")
GGLInstanceID.sharedInstance().tokenWithAuthorizedEntity(gcmSenderID,
scope: kGGLInstanceIDScopeGCM, options: registrationOptions, handler: registrationHandler)
}
func registrationHandler(registrationToken: String!, error: NSError!){
// registration handeler.
if (registrationToken != nil) {
self.registrationToken = registrationToken
println("Registration Token: \(registrationToken)")
self.subscribeToTopic()
let userInfo = ["registrationToken": registrationToken]
NSNotificationCenter.defaultCenter().postNotificationName(
self.registrationKey, object: nil, userInfo: userInfo)
} else {
println("Registration to GCM failed with error: \(error.localizedDescription)")
let userInfo = ["error": error.localizedDescription]
NSNotificationCenter.defaultCenter().postNotificationName(
self.registrationKey, object: nil, userInfo: userInfo)
}
}
func subscribeToTopic() {
// If the app has a registration token and is connected to GCM, proceed to subscribe to the
// topic
if(registrationToken != nil && connectedToGCM) {
GCMPubSub.sharedInstance().subscribeWithToken(self.registrationToken, topic: subscriptionTopic,
options: nil, handler: {(NSError error) -> Void in
if (error != nil) {
// Treat the "already subscribed" error more gently
if error.code == 3001 {
println("Already subscribed to \(self.subscriptionTopic)")
} else {
println("Subscription failed: \(error.localizedDescription)");
}
} else {
self.subscribedToTopic = true;
NSLog("Subscribed to \(self.subscriptionTopic)");
}
})
}
}
/******************** DID RECIEVE PUSH NOTIFICATION ************************/
// [START ack_message_reception]
func application( application: UIApplication,
didReceiveRemoteNotification userInfo: [NSObject : AnyObject]) {
println("Notification received: \(userInfo)")
// This works only if the app started the GCM service
GCMService.sharedInstance().appDidReceiveMessage(userInfo);
// Handle the received message
// [START_EXCLUDE]
NSNotificationCenter.defaultCenter().postNotificationName(messageKey, object: nil,
userInfo: userInfo)
// [END_EXCLUDE]
}
func application( application: UIApplication,
didReceiveRemoteNotification userInfo: [NSObject : AnyObject],
fetchCompletionHandler handler: (UIBackgroundFetchResult) -> Void) {
println("Notification received: \(userInfo)")
// This works only if the app started the GCM service
GCMService.sharedInstance().appDidReceiveMessage(userInfo);
// Handle the received message
// Invoke the completion handler passing the appropriate UIBackgroundFetchResult value
// [START_EXCLUDE]
NSNotificationCenter.defaultCenter().postNotificationName(messageKey, object: nil,
userInfo: userInfo)
handler(UIBackgroundFetchResult.NoData);
// [END_EXCLUDE]
}
// [END ack_message_reception]
func applicationWillResignActive(application: UIApplication) {
// Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
// Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}
func applicationDidEnterBackground(application: UIApplication) {
GCMService.sharedInstance().disconnect()
// [START_EXCLUDE]
self.connectedToGCM = false
// [END_EXCLUDE]
println("Stop executing app and whent into background!")
}
func applicationWillEnterForeground(application: UIApplication) {
// Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
}
func applicationDidBecomeActive(application: UIApplication) {
// Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
GCMService.sharedInstance().connectWithHandler({
(NSError error) -> Void in
if error != nil {
println("Could not connect to GCM: \(error.localizedDescription)")
} else {
self.connectedToGCM = true
println("Connected to GCM")
// [START_EXCLUDE]
self.subscribeToTopic()
// [END_EXCLUDE]
}
})
}
func applicationWillTerminate(application: UIApplication) {
// Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}
}
我错过了什么？还有其他东西可以设置背景通知吗？ 在谷歌教程页面上有这样的文字：“断开连接之后，客户端应用程序停止从GCM连接服务器接收没有”通知“有效负载的消息。它继续接收带有”通知“有效负载的消息，直到调用deletetokenWithAuthorizedEntity。如果我理解这个相关内容，当我的应用程序停止时，它应该调用disconnect以便它会收到推送通知警报和徽章吗？
感谢任何帮助：）
答案 0 :(得分：-1)
要在应用处于后台时接收推送通知，您需要格式化通知，如下所示：
func getMessage(to: String,m:String) -> NSDictionary {
// important field: "content_available":true
// [START notification_format]
return ["to": to,
"content_available":true,
"notification":[
"body":m,
],
"sound": "default",
"badge": "2",
"title": "default"
]
// [END notification_format]
}