5

application:didReceiveRemoteNotification:当收到推送通知时，我已经实现在我的应用程序中存储数据。
但是，当我的应用程序在后台并收到通知时，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重新打开它，通知的内容不会被存储：

application:didReceiveRemoteNotification:仅当我将通知横幅推到顶部时才会调用。

我使用过applicationWillEnterForeground和didFinishLaunchingWithOptions方法，在单击应用程序图标并调试其输入applicationWillEnterForeground和控制时无济于事。这是didFinishLaunchingWithOptionsandapplicationWillEnterForeground和的代码didReceiveRemoteNotification。

- (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;
    }
}
4

3 回答 3

1

如果单击主屏幕上的应用程序图标，您将无法获取推送通知的数据。但是有办法，只要应用程序进入前台，您就可以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。

也看看这个：你的问题可能是重复的。

希望这对您有所帮助。

于 2013-06-04T06:21:35.270 回答
0

一般来说，您的应用程序不应该需要推送通知的内容才能正常运行。Apple 甚至不保证会发送推送通知（如果设备不可用，它将丢弃除最新消息之外的所有通知）。

您的应用程序应始终与服务器通信以获取用户数据（或您呈现的任何内容）的权威状态。如果您确实收到推送通知，您当然可以将其用作更新或显示新信息的提示。但是即使用户正常点击您的应用程序图标（因此没有通知），您也应该联系服务器以获取或更新您需要的所有内容。

于 2013-06-04T07:09:01.513 回答
-1

尽管这是一个较老的问题，但它在该主题中的排名很高，并且从 iOS7 开始就有解决方案。

有一个名为application:didReceiveRemoteNotification:fetchCompletionHandler:的方法，即使您的应用程序在后台，它也会被调用。

我遇到的问题是它没有被调用。然后我找到了这篇文章，并意识到我必须在项目的功能中启用“远程通知”才能使其正常工作。

希望这可以帮助。

于 2014-10-22T17:29:32.930 回答