Talk given at Drupalcamp Bucharest 2011.

1. DRUPAL, ANDROID
AND IPHONE
Badiu Alexandru
Fratu Mihai
Drupalcamp Bucharest 2011

2. ABOUT US
• We work at Adulmec
• We do fine products such as Dealfever, Urbo and
Adulmec
• We sometime build mobile apps
• Ataxi, Urbo, games and soon the Adulmec app
Drupalcamp Bucharest 2011

3. CONNECTI
• You expose some functionality as
REST or some sort of web service
• Your mobile application makes HTTP
calls
• Authentication? Access control?
Drupalcamp Bucharest 2011

4. CONNECTI
• Two ways
• Use the Services module
• Use a custom solution
• Depends on your requirements
Drupalcamp Bucharest 2011

5. FOR
• Adulmec Coupon Redeem - custom
• Urbo - Services
Drupalcamp Bucharest 2011

6. CUSTOM
• Write php pages
• Without Drupal
• Lightweight Drupal
• Full Drupal
• Output XML or JSON
• Make HTTP call and parse result
Drupalcamp Bucharest 2011

7. CUSTOM
• Latest news app
• Shows a list of the latest posts on a
site
• Click on a post, go to the site
Drupalcamp Bucharest 2011

8. <?php
CUSTOM
chdir('../');
require_once './includes/bootstrap.inc';
drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);
$response = array();
$result = db_query_range('SELECT nid, title FROM {node} WHERE type="story" ORDER
BY created DESC', 0, 10);
while ($row = db_fetch_object($result)) {
$response[] = array('title' => $row->title, 'url' => 'node/' . $row->nid);
}
drupal_json($response);
Drupalcamp Bucharest 2011

9. CUSTOM
[
{
"title":"Illum Verto Fere Esse Secundum C
ui Zelus Luctus",
"url":"node/2"
},
{
"title":"Uxor Eu Camur Voco Refero Fere",
"url":"node/7"
},
]
Drupalcamp Bucharest 2011

10. CUSTOM
URI uri = new URI("http://0001.ro/alex/drupalcamp/services/pages/list.php");
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet(uri);
HttpResponse response = client.execute(request);
InputStream is = response.getEntity().getContent();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String result = br.readLine();
adapter.clear();
JSONArray r = new JSONArray(result);
for (int i = 0; i < r.length(); i++) {
JSONObject jitem = r.getJSONObject(i);
SubtitleItem item = new SubtitleItem(jitem.getString("title"),
jitem.getString("url"));
adapter.add(item);
}
adapter.notifyDataSetChanged();
Drupalcamp Bucharest 2011

11. SERVICES
• Creates web services out of Drupal
functions
• Concepts: service and server
• Autenthication plugins
• Pluggable
Drupalcamp Bucharest 2011

12. SERVICES
• Out of the box: Comments, Files,
Menu, Node, Search, System,
Taxonomy, User, Views
• XMLRPC Server
• Key based authentication
Drupalcamp Bucharest 2011

13. SERVICES
• We use XMLRPC in iOS apps
• We use JSON in Android apps
• json_server
• Demo with standard json parser
• GSON and Jackson
• Streaming and mapping
Drupalcamp Bucharest 2011

14. SERVICES
• Drupalcloud for Android
• Custom code for iOS
• drupal-ios-sdk
Drupalcamp Bucharest 2011

15. SERVICES
• Key auth allows you to grant access
just to some specific apps
• Fine-grained: user authentication
• Session id is used in every call
• system.connect
Drupalcamp Bucharest 2011

16. SERVICES
• hash - sha of domain, time and
nonce
• domain
• timestamp
• nonce
• session
Drupalcamp Bucharest 2011

17. SERVICES
• call system.connect - get session
• use session in every call
• call user.login - get new session
• use new session in every call
• call user.logout
• call system.connect - get session
• repeat
Drupalcamp Bucharest 2011

18. SERVICES
• What about saving session across app
launches?
• Save session and timestamp to prefs
after login or connect
• At launch check that the saved session
has not expired
• If not, use that session
• Otherwise system.connect
Drupalcamp Bucharest 2011

19. WTFS
• userLogin returns new session
• no user uid
• no way to set it in the client
• we create our own
• json_server does not work
Drupalcamp Bucharest 2011

20. public void setSessionId(String sessionId) {
SharedPreferences auth = mCtx.getSharedPreferences(mPREFS_AUTH, 0);
SharedPreferences.Editor editor = auth.edit();
editor.putString("sessionid", sessionId);
editor.putLong("sessionid_timestamp", new Date().getTime() / 100);
editor.commit();
}
Drupalcamp Bucharest 2011

21. WTFS
• Services is inconsistent or weird
• You’re already logged in as...
• Error is false or true?
• Where’s the error?
{ "#error": false, "#data": { "#error": true, "#message": "Wrong
username or password." } }
{ "#error": false, "#data": { "sessid":
"02fd1c8a9d37ed9709ba154320340e8a", "user": { "uid": "1", ...
Drupalcamp Bucharest 2011

22. DRUPALCL
client = new JSONServerClient(this,
getString(R.string.sharedpreferences_name),
getString(R.string.SERVER), getString(R.string.API_KEY),
getString(R.string.DOMAIN), getString(R.string.ALGORITHM),
Long.parseLong(getString(R.string.SESSION_LIFETIME)));
<string name="app_name">AndroidDemo</string>
<string name="sharedpreferences_name">AndroidDemoPrefs</string>
<string name="SERVER">http://0001.ro/alex/drupalcamp/services/
services/json</string>
<string name="API_KEY">85255b11393bc0ee19d29758a043a698</string>
<string name="DOMAIN">http://mobile.0001.ro</string>
<string name="ALGORITHM">HmacSHA256</string>
<string name="SESSION.LIFETIME">1209600</string>
Drupalcamp Bucharest 2011

23. DRUPALCL
• Has some methods built in
• Just parse the response
• For other methods do client.call()
Drupalcamp Bucharest 2011

24. DRUPALCL
String result = client.userLogin(userText.getText().toString(),
passText.getText().toString());
JSONObject r = new JSONObject(result).getJSONObject("#data");
boolean error;
try {
error = d.getBoolean("#error");
}
catch (Exception e) {
error = false;
}
if (!error) {
String session = d.getString("sessid");
client.setSessionId(session);
}
else {
finish();
}
Drupalcamp Bucharest 2011

25. DRUPALCL
try {
JSONObject node = new JSONObject();
node.put("type", "story");
node.put("title", title.getText().toString());
node.put("body", body.getText().toString());
BasicNameValuePair[] params = new BasicNameValuePair[1];
params[0] = new BasicNameValuePair("node", node.toString());
String result = client.call("node.save", params);
}
catch (Exception e) {
Log.v("drupalapp", e.toString());
e.printStackTrace();
}
Drupalcamp Bucharest 2011

26. RESOURCE
• https://github.com/skyred/
DrupalCloud
• https://github.com/workhabitinc/
drupal-ios-sdk
• http://commons.apache.org/codec/
• http://drupal.org/project/services
• http://drupal.org/project/
Drupalcamp Bucharest 2011

27. THANK
andu@ctrlz.ro
http://ctrlz.ro
Drupalcamp Bucharest 2011