Handling Push Notification on iOS - ios

Question

Currently I'm working on handling push notification and I get bug when the first notification success received and shows me the destination view controller. But for the second and the rest the application crash. I get the problem is the app doesn't receive the parameter that should get from push notification.
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];
}
}
The error like this:
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[CRDetailViewController loadDataCustomerRecommendationFromPushNotif:]: unrecognized selector sent to instance 0x14756d180'

Answer 1

The topViewController of your first navigation controller (tab one) is not HomeViewControlled but CRDetailViewController. As you can see the error message says '-[CRDetailViewController loadDataCustomerRecommendationFromPushNotif:]: unrecognized selector sent to instance 0x14756d180'
You probably want your HomeViewController to handle that information, because that view controller is the one implementing your loadDataCustomerRecommendationFromPushNotif method.
I guess you should call [navcon popToRootViewControllerAnimated:NO] right before HomeViewController *homeVC = (HomeViewController*)[navcon topViewController];
Something like this, probably:
UINavigationController *navcon = (UINavigationController*)[tabBarVC.viewControllers firstObject];
[navcon popToRootViewControllerAnimated:NO]
HomeViewController *homeVC = (HomeViewController*)[navcon topViewController];