registerForRemoteNotificationTypes: is not supported in iOS 8.0 and

注册模式:

if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0) {
        [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings
                                                                             settingsForTypes:(UIUserNotificationTypeSound |
                                                                                               UIUserNotificationTypeAlert |
                                                                                               UIUserNotificationTypeBadge)
                                                                             categories:nil]];
        [[UIApplication sharedApplication] registerForRemoteNotifications];

    }
    else {
        [[UIApplication sharedApplication]registerForRemoteNotificationTypes:UIRemoteNotificationTypeAlert|
                                                                            UIRemoteNotificationTypeBadge|
                                                                            UIRemoteNotificationTypeSound];
    }

同理推断消息推送是否打开也有变化

UIRemoteNotificationType types;
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0)
    types = [[UIApplication sharedApplication] currentUserNotificationSettings].types;
else
    types = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];
return (types & UIRemoteNotificationTypeAlert);

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