iOS 在后台推送通知操作

Question

我对推送通知有疑问。当有人点击通知时，我想调用一些方法。 当应用不是 运行 时，它很简单 (application:didFinishLaunchWithOptions call method)。但是当应用程序在后台 运行 时，我必须在点击后调用方法，而不是在收到通知后调用方法 (didReceiveRemoteNotification)。

我不知道该怎么做。

有什么方法可以在应用程序处于后台时检查是否点击了通知？

Answer 1

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{

    if (launchOptions)
    { //launchOptions is not nil

        NSDictionary *userInfo = [launchOptions valueForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
        NSDictionary *apsInfo = [userInfo objectForKey:@"aps"];
        userInfoDic = userInfo;

        if (apsInfo)
        { //apsInfo is not nil
            [self performSelector:@selector(postNotificationToPresentPushMessagesVC)
                       withObject:nil
                       afterDelay:1];
        }
    }

    return YES;
}



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

    {
               UIApplicationState state = [app applicationState];

        if (state == UIApplicationStateBackground)
        {
             [self postNotificationToPresentPushMessagesVC];
        }

        else
        {
         ...
        }
    }

-(void)postNotificationToPresentPushMessagesVC
{    
    [[NSNotificationCenter defaultCenter]postNotificationName:@"recievePush" object:userInfoDic];
}