Pass cookies from HttpURLConnection (java.net.CookieManager) to WebView (android.webkit.CookieManager)

Question

I\'ve seen answers about how this should work with the old DefaultHttpClient but there\'s not a good example for HttpURLConnection

Answer 1

As compared with DefaultHttpClient, there are a few extra steps. The key difference is how to access the existing cookies in HTTPURLConnection:

1. Call CookieHandler.getDefault() and cast the result to java.net.CookieManager.
2. With the cookie manager, call getCookieStore() to access the cookie store.
3. With the cookie store, call get() to access the list of cookies for the given URI.

Here's a complete example:

@Override
protected void onCreate(Bundle savedInstanceState) {
    // Get cookie manager for WebView
    // This must occur before setContentView() instantiates your WebView
    android.webkit.CookieSyncManager webCookieSync =
        CookieSyncManager.createInstance(this);
    android.webkit.CookieManager webCookieManager =
        CookieManager.getInstance();
    webCookieManager.setAcceptCookie(true);

    // Get cookie manager for HttpURLConnection
    java.net.CookieStore rawCookieStore = ((java.net.CookieManager)
        CookieHandler.getDefault()).getCookieStore();

    // Construct URI
    java.net.URI baseUri = null;
    try {
        baseUri = new URI("http://www.example.com");
    } catch (URISyntaxException e) {
        // Handle invalid URI
        ...
    }

    // Copy cookies from HttpURLConnection to WebView
    List cookies = rawCookieStore.get(baseUri);
    String url = baseUri.toString();
    for (HttpCookie cookie : cookies) {
        String setCookie = new StringBuilder(cookie.toString())
            .append("; domain=").append(cookie.getDomain())
            .append("; path=").append(cookie.getPath())
            .toString();
        webCookieManager.setCookie(url, setCookie);
    }

    // Continue with onCreate
    ...
}