Android C2DM Presentation at O'Reilly AndroidOpen Conference
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Explains how to use Android C2DM.
![Pushing bits from the cloud - Android and Push Notification (C2DM) ,[object Object]](https://image.slidesharecdn.com/androidopenpushingbitsc2dm-pptx-111010171921-phpapp02/85/android-c2dm-presentation-at-oreilly-androidopen-conference-1-320.jpg)
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Android C2DM Presentation at O'Reilly AndroidOpen Conference
- 2. Independent Eclipse and Android Consultant and Trainer Team Lead and Android developer at SAP AG Maintains http://www.vogella.de Java, Eclipse and Android related Tutorials with ~30 000 visitors per day @vogella About me
- 3. Why is push good? Androids C2DM The server side
- 4. Data in the Cloud Mobile Phone The challenge
- 5. Internet creates value for your application
- 6. How to get data updates?
- 7. Getting the data Polling Pushing
- 8. Polling is easy to implement Data? No Data? No Data? NO Data? NOOOOO!!! Data? Yes
- 10. An average battery has approx. 820 – 1150 mAh power
- 12. Nobody likes apps which reduce the battery life of the phone
- 13. Nobody likes apps with stale data
- 14. Pushing Server informs the phone once new data is available
- 15. Androids C2DM
- 16. Why should a constant push connection consume less energy?
- 18. Cloud to Device Messaging Available for Android 2.2 (Beta – Invite only) Requires the Market available on the device Use existing Google connections Use AlarmManager to keep the connection (Heartbeat)
- 19. What components do you need?
- 20. Android App
- 23. Trust - Everyone needs to know each other
- 24. Registration of the Server with Google Googles C2DM Server Your application server HTTP POST Token
- 25. Registration of the mobile device Googles C2DM Server Android App Request registration ID Unique registration ID Server might send new registration ID
- 26. Let my server know Android App Sends Registration ID to server Server stores the registration ID
- 27. Now my server is registered with Google AND has at least one device it can send message to
- 28. C2DM is ready to be used
- 29. Sending messages New HTTP Post message with registration id and authentication token * 200 – ok (with id==ok) 404 – get no auth token 503 – Retry with backoff
- 30. I hope Google treats my data confidential
- 31. Real Data is fetched from my server Sends notification message to device Reads the real data from server
- 32. Enforced by the message limit C2DM push can send 1024 bytes of data
- 34. Further points Best effort delivery: Google will try to deliver all messages but some might get lost collapse_key to ensure that old messages are overritten Message limit per sender, approx. 200 000
- 35. Server implementation can be anything curl, PHP, Python, C#, Scala,....
- 36. Android Developers like Java the Programming language
- 37. Your Java application server
- 38. from Guillaume Laforge and Patrick Chanezon http://www.slideshare.net/glaforge/google-app-engine-java-groovy-baby
- 39. Deployment of Java web application is....
- 40. Google App Engine Scalable Infrastructure GAE allows you to host webapplications on the Google infrastructure.
- 42. It automatically scales up and down Computing power over time
- 45. Building the app
- 49. Futher information C2DM Tutorial http://www.vogella.de/articles/AndroidCloudToDeviceMessaging/article.html Google App Engine Tutorial http://www.vogella.de/articles/GoogleAppEngineJava/article.html Chrome to Phone Example http://code.google.com/p/chrometophone/