WebView threads never stop (WebViewCoreThread, CookieSyncManager, http[0-3])

Question

You should be able to stop / resume these threads by calling the onPause / onResume on the webview.

Those are however hidden, so you will need to do it through reflection. The following code worked for me:

Class.forName("android.webkit.WebView").getMethod("onPause", (Class[]) null).invoke(webView, (Object[]) null);

Where webView is the instance of WebView.

Also see: http://code.google.com/p/android/issues/detail?id=10282