Q:

Android HTTP exception

I am using following code to log in to Dropbox, but it throws an exception.
Code:
    HttpClient client = new DefaultHttpClient();
    HttpPost post = new HttpPost("https://www.dropbox.com/login");

    // set values you'd like to send
    List pairs = new ArrayList();
    pairs.add(new BasicNameValuePair("login_email", "my email id"));
    pairs.add(new BasicNameValuePair("login_password", "******"));
    /*'login_email' and 'login_password' i found html form fields name by viewing the page source of https://www.dropbox.com/login */

    try {
        post.setEntity(new UrlEncodedFormEntity(pairs));
        // set ResponseHandler to handle String responses
        ResponseHandler<String> responseHandler = new BasicResponseHandler();
        String response = client.execute(post, responseHandler);
        Log.v("HttpPost", "Response: " + response);
        if (response.contains("SUCCESS")){
            // express your joy here!
        } else {
            // pop a sad Toast message here...
        }
    } catch (Exception e) {
        Log.e("", String.valueOf(e));
    }
}

Logcat
         11-14 23:17:35.734: E/Trace(900): error opening trace file: No such file or directory (2)
         11-14 23:17:38.793: D/dalvikvm(900): GC_CONCURRENT freed 251K, 4% free 8194K/8519K, paused 126ms+9ms, total 234ms
         11-14 23:17:39.895: E/(900): org.apache.http.client.HttpResponseException: Forbidden
         11-14 23:17:40.364: I/Choreographer(900): Skipped 75 frames!  The application may be doing too much work on its main thread.
         11-14 23:17:40.394: D/gralloc_goldfish(900): Emulator without GPU emulation detected.
         11-14 23:17:40.784: I/Choreographer(900): Skipped 62 frames!  The application may be doing too much work on its main thread.
         11-14 23:17:43.614: W/chromium(900): external/chromium/net/disk_cache/backend_impl.cc:1829: [1114/231743:WARNING:backend_impl.cc(1829)] Destroying invalid entry.

A:

I/Choreographer(900): Skipped 75 frames!  The application may be doing too much work on its main thread.

It is always suggested to do Network activity on separate thread instead of main thread by using AsyncTask.
Here is android tutorial on Connecting to the Network

