Question

嘿，我是iPhone新手，我一直在尝试使用Apple推送通知。基本上，我想要做的是当用户点击收到的推送通知消息时，我需要打开一个特定的视图控制器，它对我有用。我添加了自定义数据和关键参数＆＃34; type＆＃34;到我的有效载荷JSON。

这是我的有效载荷JSON：

{"aps":{"alert":"This is testing message","type":"Notify","badge":1,"sound":"default"}}

这是我的代码：

@synthesize viewControllerNotify;

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    [[UIApplication sharedApplication] setApplicationIconBadgeNumber:0];
    [[UIApplication sharedApplication] cancelAllLocalNotifications];

    [[UIApplication sharedApplication] registerForRemoteNotificationTypes:
     (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];

    screenBounds = [[UIScreen mainScreen] bounds];

    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

    if (launchOptions != nil) {
        //Launched from push notification

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

        NSMutableString *notificationType = [apsInfo objectForKey:@"type"];

        //For redirect to the view
        if([notificationType isEqualToString:@"Notify"]){

            //Notify updates
            UpdatesViewController *uvc1 = [[UpdatesViewController alloc] initWithNibName:@"UpdatesViewController" bundle:nil];

            self.viewControllerNotify = uvc1;
        }

        else if([notificationType isEqualToString:@"Voting"] || [notificationType isEqualToString:@"QA"]){

            //Voting & QA
            VotingQAViewController *votingQAViewController = [[VotingQAViewController alloc] initWithNibName:@"VotingQAViewController" bundle:nil];

            self.viewControllerNotify = votingQAViewController;
        }

        else if([notificationType isEqualToString:@"Survey"] || [notificationType isEqualToString:@"Quiz"]){

            //Survey & Quizzes
            SurveysViewController *surveysViewController = [[SurveysViewController alloc] initWithNibName:@"SurveysViewController" bundle:nil];

            self.viewControllerNotify = surveysViewController;
        }

        UINavigationController *nav=[[UINavigationController alloc]initWithRootViewController:self.viewControllerNotify];
        self.window.rootViewController = nav;
        [nav setNavigationBarHidden:YES];

    }
    else{
        //Normal Launch
        if(screenBounds.size.height == 568) {//iPhone5
            splashViewController = [[SplashViewController alloc] initWithNibName:@"SplashViewController_5" bundle:nil];
        }
        else{
            splashViewController = [[SplashViewController alloc] initWithNibName:@"SplashViewController" bundle:nil];
        }

        UINavigationController *nav=[[UINavigationController alloc]initWithRootViewController:splashViewController];
        self.window.rootViewController = nav;
        [nav setNavigationBarHidden:YES];

    }

    [self.window makeKeyAndVisible];
    return YES;
}

- (void)application:(UIApplication*)application didReceiveRemoteNotification:(NSDictionary*)userInfo
{
    NSDictionary *aps = (NSDictionary *)[userInfo objectForKey:@"aps"];
    int badge = [[aps objectForKey:@"badge"] intValue];
    NSMutableString *notificationType = [aps objectForKey:@"type"];

    NSLog(@"Number of badge is = %d", badge);
    NSLog(@"notification type is = %@", notificationType);

    //For redirect to the view
    if([notificationType isEqualToString:@"Notify"]){

        //Notify updates
        UpdatesViewController *uvc1 = [[UpdatesViewController alloc] initWithNibName:@"UpdatesViewController" bundle:nil];
        self.viewControllerNotify = uvc1;
    }

    else if([notificationType isEqualToString:@"Voting"] || [notificationType isEqualToString:@"QA"]){

        //Voting & QA
        VotingQAViewController *votingQAViewController = [[VotingQAViewController alloc] initWithNibName:@"VotingQAViewController" bundle:nil];

        self.viewControllerNotify = votingQAViewController;
    }

    else if([notificationType isEqualToString:@"Survey"] || [notificationType isEqualToString:@"Quiz"]){

        //Survey & Quizzes
        SurveysViewController *surveysViewController = [[SurveysViewController alloc] initWithNibName:@"SurveysViewController" bundle:nil];

        self.viewControllerNotify = surveysViewController;
    }

    [[UIApplication sharedApplication] setApplicationIconBadgeNumber:0];
    [[UIApplication sharedApplication] cancelAllLocalNotifications];

    UINavigationController *nav=[[UINavigationController alloc]initWithRootViewController:self.viewControllerNotify];
    self.window.rootViewController = nav;
    [nav setNavigationBarHidden:YES];
    [self.window makeKeyAndVisible];
}

我的问题是：这是收到推送通知时重定向到视图控制器的正确方法吗？

使用上面的代码，它在forground和后台模式下成功地代表Notification类型（通知有效负载json的自定义键）重定向到视图控制器类，但重定向的View Controller后退按钮不起作用。我不知道我在哪里做错了。如果有人知道那么请帮助我。感谢。

Answer 1

后退按钮不起作用，因为您将目标视图设置为根视图。您应该构建完整的导航堆栈，即通常，如果您将导航视图控制器作为根视图控制器，则应首先创建该导航堆栈，然后构建根和叶视图之间的所有视图控制器。

例如，如果MainViewController将是您的正常启动视图，并且UpdatesViewController的后退按钮应该导致MainViewController，您可以这样做：

MainViewController *mainVC = [[MainViewController alloc] initWithNibName:@"MainViewController" bundle:nil];
UpdatesViewController *updatesVC = [[UpdatesViewController alloc] initWithNibName:@"UpdatesViewController" bundle:nil];

UINavigationController *navVC=[[UINavigationController alloc]initWithRootViewController:mainVC];      
[navVC setViewControllers:@[mainVC, updatesVC] animated:NO];

self.window.rootViewController = navVC;

Answer 2

更好您可以使用NSNotificationCentre中的didReceiveRemoteNotification发布通知，并接收有关其他课程的通知。这样您就可以从当前视图控制器推送所需的视图控制器（无需设置为根视图控制器）。然后后退按钮就可以了。

对于前。

[[NSNotificationCenter defaultCenter] postNotificationName:kMesssagePushNotification object:nil userInfo:userInfo];

Answer 3

您有两次机会访问通知数据。

如果您在应用未启动时收到通知，请点击通知，您将通过以下功能获取通知数据：

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

使用

launchOptions[UIApplicationLaunchOptionsRemoteNotificationKey]

访问通知数据并打开您期望的视图控制器。

如果您的应用开启时收到通知，但您的应用可能位于后台或前台。如果是前一种情况，您将收到通知中心的通知，您的应用程序将在您点击通知后调用以下功能：

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

如果是后一种情况，你的应用程序将直接调用该函数。你可以使用流动的代码区分它们：

UIApplicationState state = [[UIApplication sharedApplication] applicationState];
if (state == UIApplicationStateBackground || state == UIApplicationStateInactive){
    //notification is received when your app is in background
    //open the view controller you expected
}else if(state == UIApplicationStateActive){
    //notification is received when your app is in foreground
    //do nothing
}

对不起我的英语池，希望有帮助〜

在iOS中收到APNS时在打开视图控制器中出现问题

3 个答案: