[안드로이드/android] WebView cache, cookie 삭제하기

WebView의 캐쉬와 쿠키를 삭제하는 방법

1. cookie를 지우기 위한 clearCookies() 추가

@SuppressWarnings("deprecation")
    public static void clearCookies(Context context)
    {

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP_MR1) {
            Log.d(C.TAG, "Using clearCookies code for API >=" + String.valueOf(Build.VERSION_CODES.LOLLIPOP_MR1));
            CookieManager.getInstance().removeAllCookies(null);
            CookieManager.getInstance().flush();
        } else
        {
            Log.d(C.TAG, "Using clearCookies code for API <" + String.valueOf(Build.VERSION_CODES.LOLLIPOP_MR1));
            CookieSyncManager cookieSyncMngr=CookieSyncManager.createInstance(context);
            cookieSyncMngr.startSync();
            CookieManager cookieManager=CookieManager.getInstance();
            cookieManager.removeAllCookie();
            cookieManager.removeSessionCookie();
            cookieSyncMngr.stopSync();
            cookieSyncMngr.sync();
        }
    }

2. 아래와 같이 WebView의 cache를 지워주고, 위에서 만든 clearCookies를 불러주자

mWebView.clearCache(true);
mWebView.clearHistory();

U.clearCookies(getActivity());

mWebView.loadUrl(authorizeURL);