Android WebView removeCookie

Question

Android use CookieManager to manage cookies. But there only have one method 'removeAllCookies()' to remove cookie and this removed all cookies. Now I want to remove a cookie associated with a specified url only, and other cookies don't be removed. In this situation, how can I do?

Answer 1

I made some minor changes in @summerxiaqing's answer and I checked it works. (Added https, changed empty check to TextUtils.isEmpty, passed CookieManager by argument)

     public static void clearCookieByUrl(String url, CookieManager pCookieManager, CookieSyncManager pCookieSyncManager) {
        Uri uri = Uri.parse(url);
        String host = uri.getHost();
        clearCookieByUrlInternal(url,pCookieManager,pCookieSyncManager);
        clearCookieByUrlInternal("http://." + host,pCookieManager,pCookieSyncManager);
        clearCookieByUrlInternal("https://." + host,pCookieManager,pCookieSyncManager);
    }

     private static void clearCookieByUrlInternal(String url, CookieManager pCookieManager, CookieSyncManager pCookieSyncManager) {
        if (TextUtils.isEmpty(url)) {
            return;
        }
        String cookieString = pCookieManager.getCookie(url);
        Vector<String> cookie = getCookieNamesByUrl(cookieString);
        if (cookie == null || cookie.isEmpty()) {
            return;
        }
        int len = cookie.size();
        for (int i = 0; i < len; i++) {
            pCookieManager.setCookie(url, cookie.get(i) + "=-1");
        }
        pCookieSyncManager.sync();
    }

    private static Vector<String> getCookieNamesByUrl(String cookie) {
        if (TextUtils.isEmpty(cookie)) {
            return null;
        }
        String[] cookieField = cookie.split(";");
        int len = cookieField.length;
        for (int i = 0; i < len; i++) {
            cookieField[i] = cookieField[i].trim();
        }
        Vector<String> allCookieField = new Vector<String>();
        for (int i = 0; i < len; i++) {
            if (TextUtils.isEmpty(cookieField[i])) {
                continue;
            }
            if (!cookieField[i].contains("=")) {
                continue;
            }
            String[] singleCookieField = cookieField[i].split("=");
            allCookieField.add(singleCookieField[0]);
        }
        if (allCookieField.isEmpty()) {
            return null;
        }
        return allCookieField;
    }

Inside the Activity

mContext = getApplicationContext();
CookieManager mCookieManager = CookieManager.getInstance();
CookieSyncManager mCookieSyncManager = CookieSyncManager.createInstance(mContext);
clearCookieByUrl("http://example.com", mCookieManager, mCookieSyncManager);