CookieSyncManager not working

[devkhpark]

I want to sharing session between httpclient and webview. I'm already used to 'CookieSyncManager' in webview. and, it's work perfectly.

But, in this case, 'CookieSyncManager' is not working. Of course, I changed to ChromeCookieManager for setting cookie on that browser. maybe, CookieSyncManager allows of only maintaining session in webview.
I'm struggling to solve this problem. so, how can I do that?