iOS 如果应用程序在前台，则应用程序不会收到通知

Question

我的应用和推送通知有问题。我正在使用 Parse 服务器和 back4app.com 来处理推送通知。如果应用程序在后台运行运行，或者甚至未处于活动状态，通知就会正常到达，但如果正在使用该应用程序，则不会弹出任何消息。我在这里错过了什么？该应用程序还允许本地通知，以及某些事情的提醒，所以我不确定这是否会导致它出现问题。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{ 
    window.rootViewController = navController;
    [window makeKeyAndVisible];
    [UNUserNotificationCenter currentNotificationCenter].delegate = self;
    [Parse initializeWithConfiguration:[ParseClientConfiguration configurationWithBlock:^(id<ParseMutableClientConfiguration> configuration) {
           configuration.applicationId = @"APPID";
           configuration.clientKey = @"CLIENTKEY";
           configuration.server = @"https://parseapi.back4app.com";
       }]];
   
    
    UIUserNotificationType userNotificationTypes = (UIUserNotificationTypeAlert |
                                                    UIUserNotificationTypeBadge |
                                                    UIUserNotificationTypeSound);
    UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:userNotificationTypes
                                                                             categories:nil];
    [application registerUserNotificationSettings:settings];
    [application registerForRemoteNotifications];
    
  
 
   
    NSDictionary *userInfo = launchOptions[UIApplicationLaunchOptionsRemoteNotificationKey];

    if (userInfo) {
        [self handleRemoteNotificationWithPayload:userInfo];
        
    }
}
- (void)userNotificationCenter:(UNUserNotificationCenter *)center
        willPresentNotification:(UNNotification *)notification
        withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler {

    // Play a sound.
   completionHandler(UNNotificationPresentationOptionSound);
    NSLog( @"Here handle push notification in foreground" );
    //For notification Banner - when app in foreground
    
    completionHandler(UNNotificationPresentationOptionAlert);
    
    // Print Notification info
    NSLog(@"Userinfo %@",notification.request.content.userInfo);
}
- (void)userNotificationCenter:(UNUserNotificationCenter *)center
           didReceiveNotificationResponse:(UNNotificationResponse *)response
           withCompletionHandler:(void (^)(void))completionHandler {
    NSLog(@"RECEIVED HIS WORD %@", response.notification.request.content.categoryIdentifier);

    if ([response.notification.request.content.categoryIdentifier isEqualToString:@"OPEN_HIS_WORD"]) {
        NSLog(@"RECEIVED HIS WORD");
        HisWord *hiSword= [[HisWord alloc] initWithNibName:@"HisWord" bundle:[NSBundle mainBundle]];

        
        [navController pushViewController:hiSword animated:YES];

 
    }
 
    // Else handle actions for other notification types. . .
}
- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
    // Store the deviceToken in the current installation and save it to Parse.
    PFInstallation *currentInstallation = [PFInstallation currentInstallation];
    [currentInstallation setDeviceTokenFromData:deviceToken];
    [currentInstallation saveInBackground];
}
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
    
    
   
    
    [PFPush handlePush:userInfo];
    UINavigationController *nav = (UINavigationController *) self.navController;
    DirectoryViewController *dvController8 = [[DirectoryViewController alloc] initWithNibName:@"DirectoryViewController" bundle:[NSBundle mainBundle]];
    [nav pushViewController:dvController8 animated:YES];
    
    if (application.applicationState == UIApplicationStateInactive) {
        
        [self handleRemoteNotificationWithPayload:userInfo];
    }
}
-(void)handleRemoteNotificationWithPayload:(NSDictionary *)payload {
    UINavigationController *nav = (UINavigationController *) self.navController;
    DirectoryViewController *dvController8 = [[DirectoryViewController alloc] initWithNibName:@"DirectoryViewController" bundle:[NSBundle mainBundle]];
    [nav pushViewController:dvController8 animated:YES];
    
    
    
}

Answer 1

您调用了 userNotificationCenter:willPresentNotification:withCompletionHandler: 的 completionHandler 两次，第二次被忽略。相反，您需要像这样传递两个选项：

completionHandler(UNNotificationPresentationOptionSound | UNNotificationPresentationOptionAlert);

iOS 如果应用程序在前台，则应用程序不会收到通知

iOS App Not Receiving Notifications if App is in foreground

ios

parse-platform

push-notification