处理 iOS 上的推送通知

Question

目前我正在处理推送通知，当收到第一个通知成功并向我显示目标视图控制器时，我遇到了错误。但是对于第二个和其他应用程序崩溃。我得到的问题是应用程序没有收到应该从推送通知中获取的参数。

AppDelegate.m

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
    //[PFPush handlePush:userInfo];

    NSLog(@"didReceiveRemoteNotification userInfo=%@", userInfo);

    if(application.applicationState == UIApplicationStateActive)
    {
        NSDictionary *aps = userInfo[@"aps"];
        NSString *alertTitle = @"";

        if([userInfo[@"page"] isEqualToString:@"ga"])
        {
            alertTitle = @"General Advisory";
        }
        else if ([userInfo[@"page"] isEqualToString:@"cr"])
        {
            alertTitle = @"Customer Recommendation";
        }


        UIAlertView *alert = [[UIAlertView alloc]
                              initWithTitle:alertTitle
                              message:[aps objectForKey:@"alert"]
                              delegate:self
                              cancelButtonTitle:@"Close"
                              otherButtonTitles:nil];
        [alert addButtonWithTitle:@"View"];
        //set tag to id
        alert.tag = [userInfo[@"id"] intValue];
        [alert show];
    }
    else if(application.applicationState == UIApplicationStateInactive)
    {
        [self movePageAfterReceiveNotification:userInfo[@"page"] withId:userInfo[@"id"]];
    }
}

- (void)movePageAfterReceiveNotification:(NSString *)page withId:(NSString *)pageId
{
    UIViewController *topController = [UIApplication sharedApplication].keyWindow.rootViewController;
    UITabBarController *tabBarVC = (UITabBarController*)topController.presentedViewController;

    if (tabBarVC.selectedIndex > 0)
    {
        [tabBarVC setSelectedIndex:0];
    }
    UINavigationController *navcon = (UINavigationController*)[tabBarVC.viewControllers firstObject];
    HomeViewController *homeVC = (HomeViewController*)[navcon topViewController];

    NSLog(@"Page: %@",page);
    NSLog(@"ID: %@",pageId);

    if ([page isEqualToString:@"ga"])
    {
        //redirect to homeVC 
        [homeVC loadDataGeneralAdvisoryFromPushNotif:pageId];
    }
    else if ([page isEqualToString:@"cr"])
    {
        //redirect to homeVC
        [homeVC loadDataCustomerRecommendationFromPushNotif:pageId];
    }

}

这样的错误：

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[CRDetailViewController loadDataCustomerRecommendationFromPushNotif:]: unrecognized selector sent to instance 0x14756d180'

Answer 1

您的第一个导航控制器（第一个选项卡）的 topViewController 不是 HomeViewControlled，而是 CRDetailViewController。如您所见，错误消息显示 '-[CRDetailViewController loadDataCustomerRecommendationFromPushNotif:]: unrecognized selector sent to instance 0x14756d180'

您可能希望 HomeViewController 处理该信息，因为该视图控制器是实现您的 loadDataCustomerRecommendationFromPushNotif 方法的控制器。

我想你应该在 HomeViewController *homeVC = (HomeViewController*)[navcon topViewController];

之前调用 [navcon popToRootViewControllerAnimated:NO]

大概是这样的：

UINavigationController *navcon = (UINavigationController*)[tabBarVC.viewControllers firstObject];
[navcon popToRootViewControllerAnimated:NO]
HomeViewController *homeVC = (HomeViewController*)[navcon topViewController];

处理 iOS 上的推送通知

Handling Push Notification on iOS

objective-c

ios