iOS Push notification Not working

Question

I have to implement push notification service to my application, So i had created App ID with push notification enabled in production. there very first time when install the application in my device the push notification allow and don't allow pop-up comes and if it click all . it is not generating the push notification. next next time when i launched it won't ask for any pop up and i'm not able to generate device token, Please help me in this.

Thanks, Nikhil.CH

Answer 1

First of all, Once you have responded to Push Notifications Permissions Alert details gets saved. To reset that and experience the alert once again follow these steps:

1. Delete your app from the device.

2. Turn the device off completely and turn it back on.

3. Go to Settings > General > Date & Time and set the date ahead a day or more.

4. Turn the device off completely again and turn it back on.

Now, here is step by step process on registering to push notification on iOS app:

Step 1: Ask iOS Push Notification settings on device for the app:

if ([[UIApplication sharedApplication] respondsToSelector:@selector(registerUserNotificationSettings:)]) {
    [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIRemoteNotificationTypeSound|UIRemoteNotificationTypeAlert) categories:nil]];
} else {
    [[UIApplication sharedApplication] registerForRemoteNotificationTypes:UIRemoteNotificationTypeAlert|UIRemoteNotificationTypeSound];
}

Step 2: Register for notification on the delegate call back from above method call

- (void)application:(UIApplication *)iApplication didRegisterUserNotificationSettings:(UIUserNotificationSettings *)iNotificationSettings {
    [iApplication registerForRemoteNotifications];
}

Step 3: Implement following methods to receive and save the token called from above method

- (void)application:(UIApplication *)iApplication didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)iDeviceToken
- (void)application:(UIApplication *)iApplication didFailToRegisterForRemoteNotificationsWithError:(NSError *)iError

If you are not getting push token then error method didFailToRegisterForRemoteNotificationsWithError must give you some useful information.

Answer 2

First you need to be sure that you are getting the token or an error after displaying the "allow" popup. Methods to register notification had a breaking change in iOS8, and if you use old one it will fail silently.
Here a snippet:

 if ([application respondsToSelector:@selector(registerUserNotificationSettings:)])
{
        // iOS 8
        [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];
}
else{
//.. the old one
}

Most of time that something fails can be due to wrong prov profiles and certificates matching, or because you are testing behind a firewall or VPN.
To test them I use PUSHER a wonderful software.