- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    ...
    
    if (SYSTEM_VERSION >= 8.0) {
        //ios8注册推送
        UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:(UIRemoteNotificationTypeBadge
                                                                                             |UIRemoteNotificationTypeSound
                                                                                             |UIRemoteNotificationTypeAlert) categories:nil];
        [[UIApplication sharedApplication] registerUserNotificationSettings:settings];
    }
    else
    {
        [[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeBadge|UIRemoteNotificationTypeSound|UIRemoteNotificationTypeAlert)];
    }
    ...
}

2、推送代理

///iOS8
- (void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings
{
#if !TARGET_IPHONE_SIMULATOR
    //register to receive notifications
    [application registerForRemoteNotifications];
#endif
}

- (void)application:(UIApplication *)application handleActionWithIdentifier:(NSString *)identifier forRemoteNotification:(NSDictionary *)userInfo completionHandler:(void(^)())completionHandler
{
#if !TARGET_IPHONE_SIMULATOR
    //处理自定义通知
    if ([identifier isEqualToString:@"customAction1"]){
    }
    else if ([identifier isEqualToString:@"customAction2"]){
    }
#endif
}


- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error {
#if !TARGET_IPHONE_SIMULATOR
	DLog(@"Error in registration. Error: %@", error);
    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:NSLocalizedString(@"Push notification registering error", nil) message:[error localizedDescription] delegate:self cancelButtonTitle:NSLocalizedString(@"OK", nil) otherButtonTitles:nil];
    [alertView show];
    [alertView release];
#endif
}

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
#if !TARGET_IPHONE_SIMULATOR
    //处理通知
#endif
}