ios - 本地通知横幅和声音在前台 Objective-C 中不起作用

Question

我正在尝试对我的应用实现本地通知，我实现了本地通知，但问题是......我没有收到通知横幅和声音 当我的应用位于前台时。但当我的应用程序处于后台时，它运行良好。如何将通知横幅和声音置于前台。这可能吗？

这是我的一段代码...

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Handle launching from a notification
    UILocalNotification *locationNotification = [launchOptions objectForKey:UIApplicationLaunchOptionsLocalNotificationKey];
    if (locationNotification) {
        // Set icon badge number to zero
            application.applicationIconBadgeNumber = 0;
    }
}

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

    if (application.applicationState == UIApplicationStateActive ) {
        NSLog(@"it entered active push");

        UILocalNotification *localNotification = [[UILocalNotification alloc] init];
        localNotification.userInfo = userInfo;
        localNotification.soundName = UILocalNotificationDefaultSoundName;
        localNotification.alertBody = userInfo[@"aps"][@"alert"][@"body"];
        localNotification.alertLaunchImage= userInfo[@"acme1"];
        localNotification.fireDate = [NSDate date];
        localNotification.applicationIconBadgeNumber = 1;
        [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
    }
}


- (void)applicationWillEnterForeground:(UIApplication *)application
{
    // Remove the badge number
    application.applicationIconBadgeNumber = 0;
}

-(void)application:(UIApplication*)application didReceiveLocalNotification:(UILocalNotification *)notification{

    UIApplicationState state = [application applicationState];
    if (state == UIApplicationStateActive) {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Reminder"
                                                        message:notification.alertBody
                                                       delegate:self cancelButtonTitle:@"OK"
                                              otherButtonTitles:nil];
        [alert show];
    }

    // Set icon badge number to zero
    application.applicationIconBadgeNumber = 0;

}

Answer 1

如果应用处于事件状态，您将收到 application:didReceiveLocalNotification: 仅在应用委托(delegate)中的通知。在那里，您可以显示自定义横幅，如在 View 层次结构中显示的顶层 View Controller 上的 View 。只需在应用程序打开时查看 whatsapp 通知即可