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POGoogle Spreadsheet API update \ edit with protocol
 

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    <p>I'm trying to implement some basic functionality for Google Spreadsheets, using the protocol specification with requests.</p> <p>The reason i'm doing this because it is for Android, and gdata-java library doesn't really work and the alpha android one doesn't really cut it. I managed to implement authentication, and get for lists, and delete, but for editing \ updating a row i can't really wrap my mind around it.</p> <p>For example i want to change the contents of a cell <a href="http://code.google.com/apis/spreadsheets/data/2.0/developers_guide_protocol.html#UpdatingCells" rel="nofollow noreferrer">here</a> is the specification for the protocol</p> <p>From my understanding of it, i have to send some sort of atom or xml formatted request to the edit URL. I never sent such type of requests.</p> <p>I also found <a href="http://www.devcomments.com/I-need-to-insert-update-delete-events-in-google-calendar-using-to112717.htm" rel="nofollow noreferrer">this</a>, which gives a clue on how it should be done (also an unanswered question on a forum), but didn't really managed it.</p> <p>Here is my authentication function if you need it, so you don't implement it again, if you want to try and code it.</p> <pre><code>/** * Logs in to the Google service using the ClientLogin HttpRequest API and returns an authentification token */ private String getAuthToken() { HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost(CLIENT_LOGIN_ADDRESS); List&lt;NameValuePair&gt; nameValuePairs = new ArrayList&lt;NameValuePair&gt;(); nameValuePairs.add(new BasicNameValuePair("accountType", "GOOGLE")); nameValuePairs.add(new BasicNameValuePair("Email", "username@gmail.com")); nameValuePairs.add(new BasicNameValuePair("Passwd", "password")); nameValuePairs.add(new BasicNameValuePair("service", "wise")); nameValuePairs.add(new BasicNameValuePair("source", SERVICE_NAME)); try { httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); } catch (UnsupportedEncodingException e) { //Log.e("ERROR", "UnsupportedEncodingException"); } //Log.v("TEST", "Executing request " + httppost.getURI()); ResponseHandler&lt;String&gt; responseHandler = new BasicResponseHandler(); String responseBody = null; try { responseBody = httpclient.execute(httppost, responseHandler); } catch (ClientProtocolException e) { //Log.e("ERROR", "ClientProtocolException"); } catch (IOException e) { //Log.e("ERROR", "IOException"); } //Log.v("TEST", "response:" + responseBody); String[] vals = responseBody.split("\n")[2].split("="); String auth_string = vals[1]; //Log.v("TEST", "auth_token:" + vals[1]); return auth_string; } </code></pre> <p>Here is what i'm trying as the update function, note, edit URL's are for my document won't work if you try it, it's just for an iea on what i have so far : </p> <pre><code>/** * Ignore this i use it for testing */ public void justTesting() { String url = "http://spreadsheets.google.com/feeds/cells/tl7RKkCaAxvO1f3U9Y8k5Dw/od6/private/full/R2C1/1q0cdh"; HttpClient httpclient = new DefaultHttpClient(); HttpPut httpput = new HttpPut(url); httpput.addHeader(new BasicHeader("Authorization", "GoogleLogin auth=" + getAuthToken())); httpput.addHeader(new BasicHeader("GData-Version", "2.0")); HttpEntity he = null; String messageBody = "&lt;entry&gt;"+ "&lt;id&gt;https://spreadsheets.google.com/feeds/cells/tl7RKkCaAxvO1f3U9Y8k5Dw/od6/private/full/R2C1&lt;/id&gt;"+ "&lt;link rel=\"edit\" type=\"application/atom+xml\""+ " href=\"https://spreadsheets.google.com/feeds/cells/tl7RKkCaAxvO1f3U9Y8k5Dw/od6/private/full/R2C1\"/&gt;"+ "&lt;gs:cell row=\"2\" col=\"2\" inputValue=\"300\"/&gt;"+ "&lt;/entry&gt;"; try { he = new StringEntity(messageBody); } catch (UnsupportedEncodingException e) { //Log.e("ERROR", "UnsupportedEncodingException"); } httpput.setEntity(he); try { HttpResponse hr = httpclient.execute(httpput); //Log.d("DEBUG", "sl : " + hr.getStatusLine()); } catch (ClientProtocolException e) { //Log.e("ERROR", "ClientProtocolException"); } catch (IOException e) { //Log.e("ERROR", "IOException"); } //Log.v("TEST", "executed"); } </code></pre> <p>This currently gives a 400 Bad request. Also I'm trying to achieve this using Apache HttpClient. </p> <p>Does anyone have any idea on how this might be achieved \ implemented \ how what request i should send?</p> <p>Thanks, your help will be greatly appreciated.</p> <hr> <p>I made some progress and wrote this : </p> <pre><code>public void justTesting() { String url = "https://spreadsheets.google.com/feeds/cells/tl7RKkCaAxvO1f3U9Y8k5Dw/od6/private/full/R2C1"; HttpClient httpclient = new DefaultHttpClient(); HttpPut httpput = new HttpPut(url); httpput.addHeader(new BasicHeader("Authorization", "GoogleLogin auth=" + getAuthToken())); httpput.addHeader(new BasicHeader("GData-Version", "3.0")); HttpEntity he = null; String messageBody = "&lt;entry xmlns='http://www.w3.org/2005/Atom' xmlns:gs='http://schemas.google.com/spreadsheets/2006'&gt; &lt;id&gt;http://spreadsheets.google.com/feeds/cells/tl7RKkCaAxvO1f3U9Y8k5Dw/od6/private/full/R2C1 &lt;/id&gt; &lt;gs:cell row='2' col='1' inputValue='mouuuuuuuuusee'/&gt; &lt;/entry&gt;"; //RequestEntity requestEntity = new StringRequestEntity(xml.toString(), "application/atom+xml", "UTF-8"); try { he = new StringEntity(messageBody); } catch (UnsupportedEncodingException e) { Log.e("ERROR", "UnsupportedEncodingException"); } httpput.addHeader("Content-Type", "application/atom+xml"); httpput.setEntity(he); try { HttpResponse hr = httpclient.execute(httpput); Log.d("DEBUG", "sl : " + hr.getStatusLine()); } catch (ClientProtocolException e) { Log.e("ERROR", "ClientProtocolException"); } catch (IOException e) { Log.e("ERROR", "IOException"); } Log.v("TEST", "executed"); } </code></pre> <p>Now it gives me a 403 Forbidden. Any idea why?</p>
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