在iOS前台应用程序时获取推送通知-移动开发问题

Get push notification while App in foreground iOS(在iOS前台应用程序时获取推送通知)

本文介绍了在iOS前台应用程序时获取推送通知的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

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

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

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.

解决方案

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

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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