iOS8 无法收到APNS问题

在ios8系统可以更新之后，好多人也第一时间更新了ios8，不幸的是，在我们的app内测的时候，用的企业证书ios8 好多用户无法接受APNS消息，这个怎么办？

debug才发现是没有获取到deviceToken，为什么呢？仔细看看代码：

    UIRemoteNotificationType myTypes = UIRemoteNotificationTypeBadge|UIRemoteNotificationTypeAlert|UIRemoteNotificationTypeSound;
    [[UIApplication sharedApplication] registerForRemoteNotificationTypes:myTypes];

 在ios8 之后这个API 变了要这么写：

    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0) {
        UIUserNotificationType myTypes = UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound;
        UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:myTypes categories:nil];
        [[UIApplication sharedApplication] registerUserNotificationSettings:settings];
    }

这样写了感觉已经ok啦，没有想到再试了一次，还是不行，为什么呢？在仔细看了一次document，看来做事不要太急，一定要仔细，看清楚了在写。

 这个都很重要

#ifdef __IPHONE_8_0
- (void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings
{
    //register to receive notifications
    [application registerForRemoteNotifications];
}

- (void)application:(UIApplication *)application handleActionWithIdentifier:(NSString *)identifier forRemoteNotification:(NSDictionary *)userInfo completionHandler:(void(^)())completionHandler
{
    //handle the actions
    if ([identifier isEqualToString:@"declineAction"]){
    }
    else if ([identifier isEqualToString:@"answerAction"]){
    }
}
#endif

  加了上面的代码，这个完美啦，APNS 收到了。