Set a cookie to a webView in Android

Question

I\'m getting a HttpResponse from a server when checking if a username or password is correct. When I load the url in a webview I want

Answer 1

You'll probably want to take a look at this solution: Android WebView Cookie Problem

Answer 2

Couple of comments which I found out from my experience and gave me headaches:

1. http and https urls are different. Setting a cookie for http://www.example.com is different than setting a cookie for https://www.example.com
2. A slash in the end of the url can also make a difference. In my case https://www.example.com/ works but https://www.example.com does not work.
3. CookieManager.getInstance().setCookie is performing an asynchronous operation. So, if you load a url right away after you set it, it is not guaranteed that the cookies will have already been written. To prevent unexpected and unstable behaviours, use the CookieManager#setCookie(String url, String value, ValueCallback callback) (link) and start loading the url after the callback will be called.

I hope my two cents save some time from some people so you won't have to face the same problems like I did.

Answer 3

You may want to take a look of how I am setting the a webview cookie at :

Android WebView Cookie Problem

Where in my answer you could see how I'm handling this like:

val cookieManager = CookieManager.getInstance()
cookieManager.acceptCookie()
cookieManager.setCookie(domain,"$cookieKey=$cookieValue")
cookieManager.setAcceptThirdPartyCookies(view.webViewTest,true)

Answer 4

Just wanna throw another way how this can be done. Not saying it is the best, but it is a way. You can use JavaScript to set cookies as well. Just override onPageFinished in WebViewClient

new WebViewClient() {

        override fun onPageFinished(view: WebView, url: String) {

                val javascript = """document.cookie = "key=$value""""

                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
                    view.evaluateJavascript(javascript) { s -> Timber.d("Inject: %s", s) }
                } else {
                    view.loadUrl("javascript:" + javascript, null)
                }
        }
}

One thing with this approach: you will have to reload the webView. If anyone knows how to fix that, please comment.

Answer 5

It's quite simple really.

String cookieString = "cookie_name=cookie_value; path=/";
CookieManager.getInstance().setCookie(baseUrl, cookieString);

where cookieString is formatted the same as a more traditional Set-Cookie HTTP header, and baseUrl is the site the cookie should belong to.

Answer 6

You should use it with some loop if you have few items with cookies (like in my case):

val cookies = "key1=someValue1;key2=someValue2;key3=someValue3"
val cookiesList = cookies.split(";")
cookiesList.forEach { item ->
 CookieManager.getInstance().setCookie("http://someHost.com", item)
}

You can't use it like:

CookieManager.getInstance().setCookie("http://someHost.com", "key1=someValue1;key2=someValue2;key3=someValue3")