iOS8 Push Notifications Tricks (Category)

UIApplication+Notifications.h

#import <UIKit/UIKit.h>

@interface UIApplication (Notifications)

- (void) registerForAllNotificationTypes;

@end

UIApplication+Notifications.m

#import "UIApplication+Notifications.h"

@implementation UIApplication (Notifications)

- (UIUserNotificationSettings*) createUserNotificationSettings
{
    UIUserNotificationType userNotificationTypes =  ( UIUserNotificationTypeSound
                                                    | UIUserNotificationTypeAlert
                                                    | UIUserNotificationTypeBadge);
    
    return [UIUserNotificationSettings settingsForTypes:userNotificationTypes
                                             categories:nil];
}

- (void) registerForAllNotificationTypes
{
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_8_0
    if ([self respondsToSelector:@selector(registerUserNotificationSettings:)]) {
        [self registerUserNotificationSettings:[self createUserNotificationSettings]];
        [self registerForRemoteNotifications];
    } else
#endif
    {
        [self registerForRemoteNotificationTypes: UIRemoteNotificationTypeBadge
                                                | UIRemoteNotificationTypeAlert
                                                | UIRemoteNotificationTypeSound];
    }
}

@end

ZAppDelegate.m

#import "UIApplication+Notifications.h"

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

    [application registerForAllNotificationTypes];

    // some other logic can be here

    return YES;
}

- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {

    // now you have deviceToken
}