first of all, can someone please explain how does CookieManager.getInstance() work? I don't really get how I can get the session from webview? Lets say if I have this
CookieSyncManager.createInstance(WebviewPage.this);
CookieManager cookieManager = CookieManager.getInstance();
Do I get the session from the class named WebviewPage? but what if I named my actual WebView to webview, how can cookieManager get the session of webview? not even talk about if I had two WebView, webview1 and webview2. How do I know which session that was stored in cookieManager??
My main question is...I have two activities and one webview in each activity. How can I get the session from Activity A and pass it to the webview in Activity B?
Thanks!!!
As far as I know, you don't need to set cookie for webview2.
webview2 will automatically use the cookies from webview1.
CookieManager seems to be a singleton, so when you call getInstance() you always get the same instance. So if webview 1 set some cookies on the CookieManager, or if you set it your self using set Cookie, all other webviews should get the same cookies as well.
Related
i have cookies,want to send the cookie to WebView,how i can do?
i use JSOUP to get cookies from login page and i use the follow code but not working
webview.LoadUrl(URL, Cookies)
I had to do something like this a couple of weeks ago. I ditched the webview though and used a recyclerview for the info because of data and ram consumption.
res = Jsoup.connect(url)
.data("user", user, "passwrd", pass)
.method(Connection.Method.POST)
.execute();
String sessionId = res.cookie("PHPSESSID");
The code up there is actually from Jsoup's creator himself on how to store cookies. Then its a matter of setting the cookiemanager to these cookies.
CookieManager cookieManager = CookieManager.getInstance();
cookieManager.setAcceptCookie(true);
cookieManager.setCookie(url,String.format("%s=%s",
"PHPSESSID", sessionId));
Then I just loaded the webview. I think a really important line here is formatting the string in the second parameter of the setCookie() method to match how the cookie is actually a Map with a key and value of PHPSESSID and the cookies characters. PHPSESSID is the id name that shows up for me in the cookie.
Lets prepare for cookie storing:
CookieSyncManager.createInstance(getApplicationContext());
CookieSyncManager.getInstance().startSync();
CookieManager.getInstance().setAcceptCookie(true);
Then I'm putting manually some cookies, lets say PHPSESSID and RANDOM
CookieManager.getInstance().setCookie("domain.com", "PHPSESSID="+phpSession);
CookieManager.getInstance().setCookie("domain.com", "RANDOM="+random);
lets check is it working using:
CookieManager.getInstance().getCookie("domain.com");
and got
PHPSESSID=dba4ff392agd39b5951d10a91a0a7b56; RANDOM=266284790:1466147978:c91d0896bac59e0b
Everything looks good, but when I navigate in may app to one of WebView Activities, which are opening same domain website also setting cookies, then when I print cookie like above it looks like this:
PHPSESSID=dba4ff392agd39b5951d10a91a0a7b56;
RANDOM=266284790:1466147978:c91d0896bac59e0b;
PHPSESSID=9ecb5156cf8fc3190fbc69fd13393243;
RANDOM=265078219%3A1463147975%3Ad0448d163e9b2123
duplicated entries... when after that I manually set again e.g. RANDOM with setCookie:
PHPSESSID=dba4ff392agd39b5951d10a91a0a7b56;
RANDOM=111111111:2222222222:33333336bac59e0b;
PHPSESSID=9ecb5156cf8fc3190fbc69fd13393243;
RANDOM=265078219%3A1463147975%3Ad0448d163e9b2123
values set by WebView are not overwritten, only my "manually" entered... how to force WebView to use my earlier set cookie OR overwrite already set?
As in the MDN docs about Set-Cookie you can see many different kinds of cookie values, a cookie can be set to particular Path
cookie-name=cookie-value; Path=path-value
And in CookieManager.setCookie void setCookie (String url, String value), the android reference says:
Sets a cookie for the given URL. Any existing cookie with the same host, path and name will be replaced with the new cookie. The cookie being set will be ignored if it is expired.
In my opinion, the reason that you have duplicate entries is because the cookie values were in different Path. So if you want to overwrite you should make sure host path name are the same.
private void setCookieManager(String auth_token) {
CookieSyncManager manager = CookieSyncManager.createInstance(this);
CookieManager cookieManager = CookieManager.getInstance();
cookieManager.setAcceptCookie(true);
cookieManager.removeSessionCookie();
cookieManager.setCookie(auth_token);
manager.sync();
}
I think you just didn't setup your cookie manager properly. Give this a try
How do I enable cookies in a webview?
I tried to use
CookieManager.getInstance().setAcceptCookie(true);
just before calling WebView.loadUrl() and it doesn't work as I get an HTML page error from a website saying cookies need to be enabled.
How does cookieManager know which webview to enable cookies?
Say if I had an activity with two webviews in the screen and I only wanted one of those webviews to enable cookies, how is that possible using a CookieManager?
I feel like I am missing something. I could not find a method like webView.setCookieManager or Cookiemanager.setWebView(webview).
You should consider that
CookieManager.getInstance().setAcceptCookie(true);
doesn't work from lollipop(API21) and above. You should check and use appropriate function for that case:
if (android.os.Build.VERSION.SDK_INT >= 21) {
CookieManager.getInstance().setAcceptThirdPartyCookies(mWebView, true);
} else {
CookieManager.getInstance().setAcceptCookie(true);
}
CookieManager.getInstance() is the CookieManager instance for your entire application.
Hence, you enable or disable cookies for all the webviews in your application.
Normally it should work if your webview is already initialized:
http://developer.android.com/reference/android/webkit/CookieManager.html#getInstance()
Maybe you call CookieManager.getInstance().setAcceptCookie(true); before you initialize your webview and this is the problem?
I have an application on appspot that works fine through regular browser, however when used through Android WebView, it cannot set and read cookies. I am not trying to get cookies "outside" this web application BTW, once the URL is visited by WebView, all processing, ids, etc. can stay there, all I need is session management inside that application. First screen also loads fine, so I know WebView + server interactivity is not broken.
I looked at WebSettings class, there was no call like setEnableCookies.
I load url like this:
public class MyActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
WebView webview = new WebView(this);
setContentView(webview);
webview.loadUrl([MY URL]);
}
..
}
Any ideas?
If you are using Android Lollipop i.e. SDK 21, then:
CookieManager.getInstance().setAcceptCookie(true);
won't work. You need to use:
CookieManager.getInstance().setAcceptThirdPartyCookies(webView, true);
I ran into same issue and the above line worked as a charm.
From the Android documentation:
The CookieSyncManager is used to synchronize the browser cookie
store between RAM and permanent storage. To get the best performance,
browser cookies are saved in RAM. A separate thread saves the cookies
between, driven by a timer.
To use the CookieSyncManager, the host application has to call the
following when the application starts:
CookieSyncManager.createInstance(context)
To set up for sync, the host application has to call
CookieSyncManager.getInstance().startSync()
in Activity.onResume(), and call
CookieSyncManager.getInstance().stopSync()
in Activity.onPause().
To get instant sync instead of waiting for the timer to trigger, the
host can call
CookieSyncManager.getInstance().sync()
The sync interval is 5 minutes, so you will want to force syncs
manually anyway, for instance in onPageFinished(WebView, String). Note
that even sync() happens asynchronously, so don't do it just as your
activity is shutting down.
Finally something like this should work:
// use cookies to remember a logged in status
CookieSyncManager.createInstance(this);
CookieSyncManager.getInstance().startSync();
WebView webview = new WebView(this);
webview.getSettings().setJavaScriptEnabled(true);
setContentView(webview);
webview.loadUrl([MY URL]);
I figured out what's going on.
When I load a page through a server side action (a url visit), and view the html returned from that action inside a Webview, that first action/page runs inside that Webview. However, when you click on any link that are action commands in your web app, these actions start a new browser. That is why cookie info gets lost because the first cookie information you set for Webview is gone, we have a seperate program here.
You have to intercept clicks on Webview so that browsing never leaves the app, everything stays inside the same Webview.
WebView webview = new WebView(this);
webview.setWebViewClient(new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
view.loadUrl(url); //this is controversial - see comments and other answers
return true;
}
});
setContentView(webview);
webview.loadUrl([MY URL]);
This fixes the problem.
My problem is cookies are not working "within" the same session. –
Burak: I had the same problem. Enabling cookies fixed the issue.
CookieManager.getInstance().setAcceptCookie(true);
CookieManager.getInstance().setAcceptCookie(true); Normally it should work if your webview is already initialized
or try this:
CookieSyncManager.createInstance(this);
CookieManager cookieManager = CookieManager.getInstance();
cookieManager.removeAllCookie();
cookieManager.setAcceptCookie(true);
I'm trying to set some cookies on my WebView to open a browser with the same session that I have on my app.
I read a lot of answers but they don't work for me. The only solution I've found is in the loadUrl, hardcode the cookie data in extraHeaders, but as expected this only works for this requests, and doesn't maintain the session.
The code that I have is:
CookieSyncManager cookieSyncManager = CookieSyncManager.createInstance(mWebView.getContext());
CookieManager cookieManager = CookieManager.getInstance();
cookieManager.setAcceptCookie(true);
cookieManager.removeSessionCookie();
cookieManager.setCookie("http://xx.xxx.example.com","mid="+MySession.GetSession().sessionId+" ; Domain=.example.com");
cookieSyncManager.sync();
String cookie = cookieManager.getCookie("http://xx.xxx.example.com");
Log.d(LOGTAG, "cookie ------>"+cookie);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.setWebViewClient(new TuWebViewClient());
mWebView.loadUrl("http://xx.xx.example.com");
getCookie() returns the correct data, but when I read the cookies from the server, those are empty. What is wrong? Please advise.
Thank you!!!
Solved!!!! the problem is with the webView, I dont know what happend, but If I create the
WebView webView = new WebView(Activity.this);
it works. If I read the webview from activity with findViewById() it doesn't work.
Also if you need to set a list of cookies that you received previously from a website.
All you have to do is use a for-loop to go through and set all of them . It helped me to solve the situation
CookieSyncManager cookieSyncManager = CookieSyncManager.createInstance(mWebView.getContext());
...
cookieSyncManager.sync();
is the cause of problem. You should do like this:
CookieSyncManager.createInstance(mWebView.getContext());
...
CookieSyncManager.getInstance().sync();
And there will be no need to manually create WebView...