Research on cookies in WebView

1.webview cookie Keep it locally

Project use WebView In fact, it will automatically Cookie Save in local database . The path to save is data/data/package_name/app_WebView/Cookies Though not .db At the end of the , It's actually a .db file , If the validity period is not set , Unless websid,sid Replace , It won't fail

2.webview Medium cookie It will not be cleared as the page closes

conversation cookie stay WebView It will not expire when closed , You have to manage it yourself .

Turn on cookie

        if (android.os.Build.VERSION.SDK_INT >= 21) {
            CookieManager.getInstance().setAcceptThirdPartyCookies(webView, true);
        } else {
            CookieManager.getInstance().setAcceptCookie(true);
        }

1. Set up cookie:

In the parameter URL In the process of use, it is basically the domain name . for example https://www.baidu.com/ You can make www.baidu.com
Cookie The acquisition of the list varies according to the storage method of your own items . For example, using SharedPreferences and HashMap
Pay attention to for loop Conduct setCookie(String url, String value) call . There are blogs on the Internet that use semicolons to splice manually value Values can cause Cookie Cannot be set completely or invalid
Be careful value The value of is to use key=value The complete form of . Document tips the cookie as a string, using the format of the ‘Set-Cookie’ HTTP response header
CookieSyncManager Is an obsolete class ,Api21 in WebView Can automatically synchronize .
CookieSyncManager.getInstance().sync(); An alternative to this method is cookieManager.flush();
Cookie The synchronization method should be in WebView Of setting After set up, call , Otherwise it will not work .
call loadUrl(url); The previous sentence calls this method to Cookie Synchronous operation .
CookieManager cookieManager = CookieManager.getInstance();
cookieManager.setCookie(murl, “username=” + nickName + “;”);//cookies Is in HttpClient From cookie
cookieManager.setCookie(murl, “websid=” + currentUser.getSid() + “;”);//cookies Is in HttpClient From cookie
cookieManager.setCookie(murl, “sid=” + currentUser.getSid() + “;”);//cookies Is in HttpClient From cookie
cookieManager.setCookie(murl, “userid=” + currentUser.getId() + “;”);//cookies Is in HttpClient From cookie
cookieManager.setCookie(murl, “t3kwid=” + currentUser.getId() + “;”);//cookies Is in HttpClient From cookie
cookieManager.setCookie(murl, “uph=” + “;”);//cookies Is in HttpClient From cookie
CookieSyncManager.getInstance().sync();

2. Sync cookie:

    public void onPageFinished(WebView view, String url) {
            CookieManager cookieManager = CookieManager.getInstance();
            String cookieStr = cookieManager.getCookie(url);
            String[] split = cookieStr.split(";");

}

3. eliminate cookie

       CookieManager cookieManagerStore = CookieManager.getInstance();
       cookieManagerStore.removeAllCookie();