iphone - 当我的应用程序处于后台时，只有当我触摸顶部通知横幅并且在我单击应用程序图标时不工作时才会处理推送通知

Question

我已经实现了 application:didReceiveRemoteNotification: 以在收到推送通知时将数据存储在我的应用程序中。
但是，当我的应用程序处于后台并且我收到通知时，只有当我触摸出现在顶部的通知横幅时才会存储数据:

相反，如果我触摸应用程序图标将其重新打开，则不会存储通知的内容:

application:didReceiveRemoteNotification: 仅在我将通知横幅推到顶部时调用。

我使用了 applicationWillEnterForeground 和 didFinishLaunchingWithOptions 方法，在单击应用程序图标并调试其进入 applicationWillEnterForeground 时控制无处可去。这是 didFinishLaunchingWithOptions 和 applicationWillEnterForeground 和 didReceiveRemoteNotification 的代码。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
    // Override point for customization after application launch.
    self.viewController = [[[ViewController alloc] initWithNibName:@"ViewController" bundle:nil] autorelease];
    self.window.rootViewController = self.viewController;
    [self.window makeKeyAndVisible];
    self.isForeground = YES;

    // Let the device know we want to receive push notifications
    [[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];
    storage= [[NSMutableArray alloc]init];
    if (launchOptions != nil) {
        // launched from notification item click
        NSDictionary *userInfo = [launchOptions objectForKey: UIApplicationLaunchOptionsRemoteNotificationKey];
        if (userInfo != nil) [self HandleNotification:userInfo];
    }
    return YES;
}

- (void)applicationWillEnterForeground:(UIApplication *)application {
    // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
    isForeground = YES;
    NSArray *subviews = [window subviews];
    for (int i = 0; i < [subviews count]; i++) {
        [[subviews objectAtIndex:i] removeFromSuperview];
    }
    //[self.window addSubview:tabBarController.view];
    [self.window makeKeyAndVisible];
    self.viewController = [[[ViewController alloc] initWithNibName:@"ViewController" bundle:nil] autorelease];
    self.window.rootViewController = self.viewController; 
}

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
    [self HandleNotification:userInfo]; 
}

- (void)HandleNotification:(NSDictionary *)userInfo {
    ApiWrapper *wrapper = [[ApiWrapper alloc] init];
    NSString *dteStr = [[NSString alloc] init];
    NSDate *nowdate = [NSDate date];
    NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
    //[dateFormat setTimeZone:[NSTimeZone timeZoneWithName:@"Europe/London"]];
    [dateFormat setDateFormat:@"dd/MM/yyyy HH:mm:ss"];
    dteStr = [dateFormat stringFromDate:nowdate];
    [dateFormat release];

    NSString *notifId = [userInfo objectForKey:@"NotificationId"];
    NSData *test = self.strTest;
    NSString *strToken = [NSString stringWithFormat:@"%@", test];
    strToken = [strToken substringWithRange:NSMakeRange(1, [strToken length] - 2)];     

    [wrapper deviceResponse:notifId:dteStr:strToken];

    NSLog(@".....user info%@", userInfo);
    NSDictionary *pushInfo = [userInfo  objectForKey:@"aps"];
    NSString *alertstring = [pushInfo objectForKey:@"alert"];
    NSLog(@"Alertstring: %@", alertstring);

    [UIApplication sharedApplication].applicationIconBadgeNumber = [[[userInfo objectForKey:@"aps"] objectForKey: @"badgecount"] intValue];

    MLNotifMessage *objNotif = [[MLNotifMessage alloc] init];
    objNotif.notifText = alertstring;    
    NSDate *nowdate1 = [NSDate date];
    NSDateFormatter *dateFormat1 = [[NSDateFormatter alloc] init];
    //[dateFormat setTimeZone:[NSTimeZone timeZoneWithName:@"Europe/London"]];
    [dateFormat1 setDateFormat:@"dd/MM/yyyy HH:mm:ss"];
    objNotif.datenow = [dateFormat1 stringFromDate:nowdate1];
    [dateFormat1 release];

    NSLog(@"Date in delegate class is %@", objNotif.datenow);
    [storage addObject:objNotif];    

    if (self.isForeground) {
        NSArray *subviews = [window subviews];
        for (int i = 0; i < [subviews count]; i++) {
            [[subviews objectAtIndex:i] removeFromSuperview];
        }
        [self.window makeKeyAndVisible];
        self.viewController = [[[ViewController alloc] initWithNibName:@"ViewController" bundle:nil] autorelease];
        self.window.rootViewController = self.viewController;
    }
}

Answer 1

如果单击主屏幕上的应用程序图标，则无法获取推送通知的数据。 但也有办法，您可以在应用程序进入前台时向您的服务器发送一个小负载，然后要求服务器立即发送推送通知。

Also take a look at this : your question is possibly duplicate of it.

希望对你有帮助。