1. www.openintents.org support@openintents.org Droidcon London 2010,
28 October 2010
OpenIntents, Open Apps and
Dependencies
Friedger Müffke
@fmdroid
#openintents

2. No monoliths ..
but interconnected
components
All apps are equal!

3. OpenIntents.org
●
Discussion group since 2007
●
All about open applications and interoperability
●
Open source
●
List of Android libraries
●
Intents registry
●
Backed by OpenIntents UG
(haftungsbeschränkt)
– Closed source apps
– Organizer of droidcon

4. Intent registry
www.openintents.org
Browse and find
intents, actions,
applications, URIs,
extras
Promote your own
intents and applications
Listen to talk tomorrow
As of October 2010:
>50 registered intents
Reuse components!
Don't reinvent the wheel!

5. Dependency Manager
Application
with
dependencies
Dependency Manager
Appstore 1
with Content Provider Appstore 2
with Content
Provider
Content
Provider
of OI Website
1. Unresolvable
Intent
2. Resolve Intent
3. Provide
Intent Filter
Info
UI for Choosing App
4. User chooses app

6. App with Dependencies
<meta-data android:name =
"org.openintents.dm.dependency-client"
android:resource =
"@xml/mandatory"/>
<dependencies xmlns:dm =
"http://schemas.openintents.org/android/dependency-manager/1.0/client">
<!-- Implicit Intent -->
<intent dm:component-type="activity">
<action dm:name="android.intent.action.BAZ" />
<category dm:name="android.intent.category.FOO" />
<category dm:name="android.intent.category.QUUX" />
<data dm:uri="http://foo.bar.org/" />
</intent>
<!-- Implicit Intent with mime-type -->
<intent dm:component-type="service">
<action dm:name="foo.bar.QuuxService" />
<data dm:mimeType="text/plain" />
</intent>
<!-- Explicit Intent -->
<intent dm:component-type="receiver">
<component dm:name="foo.bar/.BazReceiver" />
</intent>
Manifest
mandatory.xml

7. Dependency Source
Content Provider
– Declaration in Manifest.xml
<meta-data android:name=
"org.openintents.dm.dependency-source"
android:resource=
"@xml/dependency_source"/>
– dependency_source.xml
<dependency-source xmlns:dm=
"http://schemas.openintents.org/android/dependency-
manager/1.0/source"
dm:authority="org.openintents.dm.teststore"/>
– Contract for Dependency Source

8. Open Apps (1)
● Declare intent filters in your Manifest
● Publish your intent filters on
open-android-apps.appspot.com
● Explore intents and which apps do offer the
corresponding functionality

9. Open Apps (2)
In the future
– Mark as inappropriate
– Integration in dependency manager
– Link to Intents Registry
– Eclipse Integration

10. Participate!
● Tonight during the hackathon
● OpenIntents repository at Google code
● Android is open as are these issues
– Issue 4716: Support package dependency
through uses-intent in Manifest
– Issue 3217: Support
PackageManager.GET_INTENT_FILTERS
– Issue 4159: Market should allow developers to list
extension points for their apps

11. More info
Web site:
www.openintents.org
Developer group:
http://groups.google.com/group/openintents
Code repository:
http://openintents.googlecode.com