An early look at DroidPush API - a push API for Android

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Implementing Push on Android –

The DroidPush API

November 03, 2009

Stefan Alund & Johannes Willig

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DroidPush Droidcamp 3.11.2009

What this session is about

Why Push Delivery?

Push Basics

The DroidPush API

Demo

Discussion

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Why Push Delivery?

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Why push delivery ?

Any news?

No!Any news?

No!

Any news?

No! New content!

Any news?

Yes! (News)

Push me your news!

News!

poll push

› Transfer content as soon as available

› Save device battery

› Reduce data traffic for user

pushpush







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Push efficiency – Why Polling is BAD

Mobile Push

1 hour poll

5 min poll

1 min poll

30 sec poll

0 20 40 60 80 100 120 140

Battery lifetime [h]

1 test run per configuration on a Sony Ericsson C905 device

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Push Basics

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Push delivery basics: Push to Poll

Service ProviderMobile

0. Subscribe for news

ContentServer

PushGateway

1.Provide content access

2. Init Push delivery3. Deliver Push Trigger

4.Request Content

5.Deliver Content

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Trigger Types & Technology

› Trigger types–TCP / UDP connection–Short Message Service

› Push frameworks –MIDP 2.0 Push Registry / WMA–OMA WAP Push–Apple Push Notifications–RIM: Hosted Data Push Service–Google Push (Android)–MQTT Push (Android et.al.)

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SMS Push Technology

› SMS header may contain “app port” field – Dedicated range of free usable port numbers– Port handling not yet supported in Android (1.6)

› Mobile applications can register to a SMS application port– App is automatically started at SMS reception with this port– SMS content is passed to application for further usage

› SMS contains link to content (push to poll)

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G1 Long Polling „Push“ - GMAIL Client Mail ServerPush Server

Keep-alive(Client-initiatied)

Push Notification

Mail Download

Keep-alive(Server-initiatied)

Keep-alive(Client-initiatied)

...

Close Connectionto Mail Server

› GMails are always pushed

› Google Push Mechansim shared by all Google apps

› Long-lived TCP connection („push channel“) used

› Upon mail reception, notification is sent through push channel

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The DROIDPUSH API

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droidpuSh Overview

Dro

idP

us

h A

PI

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Show me the Code

› Import the API (jar)

›Setup Manifest for Push Intents

› Implement your BroadcastReceiver

›Start to Push

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DEMO

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END

http://labs.ericsson.com

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Push ApplicationsPush podcasting

Active wallpaper

Warning! Take cover

Emergency alerts

Pushed Dates