在前台iOS中的App时获取推送通知 [英] Get push notification while App in foreground iOS

问题描述

我在我的应用中使用推送通知服务。当应用程序在后台时，我能够在通知屏幕上看到通知（当我们从iOS设备的顶部向下滑动时显示的屏幕）。但是如果应用程序在前台，那么委托方法

I am using push notification service in my app. When app is in background I am able to see notification on notification screen(screen shown when we swipe down from top of iOS device). But if application is in foreground the delegate method

- (void)application:(UIApplication*)application didReceiveRemoteNotification:(NSDictionary*)userInfo

被调用，但通知屏幕中不显示通知。

is getting called but notification is not displayed in notification screen.

我想在通知屏幕上显示通知，无论应用程序是在后台还是前台。我厌倦了寻找解决方案。非常感谢任何帮助。

I want to show notification on notification screen independent of whether app is in background or foreground. I am tired by searching for a solution. Any help is greatly appreciated.

推荐答案

如果应用程序在前台运行，iOS将不会显示通知横幅/警报。这是设计的。但是我们可以通过使用 UILocalNotification 来实现它，如下所示

If the application is running in the foreground, iOS won't show a notification banner/alert. That's by design. But we can achieve it by using UILocalNotification as follows

• 检查是否应用程序在接收远程
  
  通知时处于活动状态。如果处于活动状态，则触发UILocalNotification。

• Check whether application is in active state on receiving a remote
  notification. If in active state fire a UILocalNotification.

if (application.applicationState == UIApplicationStateActive ) {

    UILocalNotification *localNotification = [[UILocalNotification alloc] init];
    localNotification.userInfo = userInfo;
    localNotification.soundName = UILocalNotificationDefaultSoundName;
    localNotification.alertBody = message;
    localNotification.fireDate = [NSDate date];
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
}

SWIFT：

if application.applicationState == .active {
    var localNotification = UILocalNotification()
    localNotification.userInfo = userInfo
    localNotification.soundName = UILocalNotificationDefaultSoundName
    localNotification.alertBody = message
    localNotification.fireDate = Date()
    UIApplication.shared.scheduleLocalNotification(localNotification)
}

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