应用程序在前台时未在通知托盘（顶部）中收到推送通知 iOS

Question

我尝试了很多在应用程序处于前台时获取修改通知.... 通过创建 Notification Service Extensions

在后台并杀死修改成功但在前台仅在警报正文中获取原始有效载荷而不是在通知中。

这里在 NotificationService.m 文件中

@implementation NotificationService
- (void)didReceiveNotificationRequest:(UNNotificationRequest *)request    withContentHandler:(void (^)(UNNotificationContent * _Nonnull))contentHandler {
    self.contentHandler = contentHandler;
    self.bestAttemptContent = [request.content mutableCopy];

    // Modify the notification content here...


    NSLog(@"tesrrrr");

    self.bestAttemptContent.title = [NSString stringWithFormat:@"%@ [modified]", self.bestAttemptContent.title];
    self.bestAttemptContent.body = [NSString stringWithFormat:@"%@[ body  added Manually ]", self.bestAttemptContent.body];



    self.contentHandler(self.bestAttemptContent);
}
{(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
    NSDictionary *userInfo1 = userInfo;
    NSLog(@"userInfo: %@", userInfo1);

    //self.textView.text = [userInfo description];
    // We can determine whether an application is launched as a result of the user tapping the action
    // button or whether the notification was delivered to the already-running application by examining
    // the application state.

    if (application.applicationState == UIApplicationStateActive)
    {
        //opened from a push notification when the app was on background


     /*  UILocalNotification *localNotification = [[UILocalNotification alloc] init];
        localNotification.userInfo = userInfo;
        localNotification.soundName = UILocalNotificationDefaultSoundName;
        localNotification.alertBody = @"xyz";
        localNotification.fireDate = [NSDate date];
        [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];

        */


        NSLog(@"userInfoUIApplicationStateactive->%@",[userInfo objectForKey:@"aps"]);
        NSLog(@"userInfoUIApplicationStateactive->%@",[userInfo objectForKey:@"aps"]);

        UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Did receive a Remote Notification" message:[NSString stringWithFormat:@"Your App name received this notification while it was Running:\n%@",[[userInfo objectForKey:@"aps"] objectForKey:@"alert"]]delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];

        [alertView show];

       // [self scheduleAlarmForDate1:[NSDate date]alarmDict:userInfo];



    }
    else
    {
        // a push notification when the app is running. So that you can display an alert and push in any view

        NSLog(@"userInfoUIApplicationStateBackground->%@",[userInfo objectForKey:@"aps"]);

    }
}}

Answer 1

实施 UNUserNotificationCenterDelegate 委托方法以在应用程序处于前台时获取通知（顶部托盘）。但它只适用于 IOS 10.

在您的 didFinishLaunchingWithOptions 方法中，像这样设置 UNUserNotificationCenterDelegate 委托。

[UNUserNotificationCenter currentNotificationCenter].delegate = self;

实施委托方法...

//Called when a notification is delivered to a foreground app.
-(void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler{

    completionHandler(UNAuthorizationOptionSound | UNAuthorizationOptionAlert | UNAuthorizationOptionBadge);
}

//Called to let your app know which action was selected by the user for a given notification.
-(void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void(^)())completionHandler{

    completionHandler();
}

注意

如果您的应用程序开发目标小于 IOS10，请使用它来设置委托。

#if defined(__IPHONE_10_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_10_0
    // For iOS 10 display notification (sent via APNS)
    [UNUserNotificationCenter currentNotificationCenter].delegate = self;
#endif

Answer 2

顶部的通知横幅在应用程序处于前台时不会显示。此横幅由 OS 管理，仅在应用程序处于后台或终止状态时调用。

尽管 iOS 10 不是这种情况，但从 iOS 10 开始，您可以这样做，您需要在委托中捕获通知并调用显示横幅的函数。

func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
completionHandler(UNNotificationPresentationOptions.alert)
}

但正如我所说，这仅适用于 iOS 10+。对于以前的兼容性，您可以执行以下操作：

为其创建自定义控件。当应用程序处于前台时，您可以轻松地在委托函数中捕获通知。然后您可以调用自己的自定义控件（视图）以像横幅一样显示。幸运的是，有许多很好的通知自定义控件可以做到这一点。这里有一些：

1.BRYXBanner

2.CRToast

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