我按照demo写的代码。请问推送没有声音是为什呢？

  if ([[UIDevice currentDevice].systemVersion floatValue] >= 10.0) {
//#ifdef __IPHONE_10_0
    JPUSHRegisterEntity * entity = [[JPUSHRegisterEntity alloc] init];
    entity.types = UNAuthorizationOptionAlert|UNAuthorizationOptionBadge|UNAuthorizationOptionSound;
    [JPUSHService registerForRemoteNotificationConfig:entity delegate:self];
//#endif
    }else if ([[UIDevice currentDevice].systemVersion floatValue] >= 8.0) {
        //可以添加自定义categories
        [JPUSHService registerForRemoteNotificationTypes:(UIUserNotificationTypeBadge |
                                                          UIUserNotificationTypeSound |
                                                          UIUserNotificationTypeAlert)
                                              categories:nil];

    }else {
        //categories 必须为nil
        [JPUSHService registerForRemoteNotificationTypes:(UIRemoteNotificationTypeBadge |
                                                          UIRemoteNotificationTypeSound |
                                                          UIRemoteNotificationTypeAlert)
                                              categories:nil];
    }