android WebView cookies expires when exit app

As the CookieSyncManager.getInstance().sync(); is deprecated Itried to maintain cookies forever in my application using new command flush() :

webview.setWebViewClient(new WebViewClient() {          @Override          public void onPageFinished(WebView view, String url) {              CookieManager.getInstance().setAcceptCookie(true);              CookieManager.getInstance().acceptCookie();              CookieManager.getInstance().acceptThirdPartyCookies(webview);              CookieManager.getInstance().flush();          }          // and more settings for webview     }  

But every time I open the app it seems that previous cookies were expired. Do those options help preserving cookies? And Should I put them in onPageFinished?

Besides I have to say that the cookies are working fine on the target website and are set to live for 100 days. Also minSdkVersion is 21 and targetSdkVersion is 29.

https://stackoverflow.com/questions/65376446/android-webview-cookies-expires-when-exit-app December 20, 2020 at 10:32AM