Android Cloud To Device Messaging
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This document discusses push notifications and Android Cloud to Device Messaging (C2DM). It explains that C2DM allows servers to send lightweight messages to Android apps even when the apps are not actively running. The document provides steps for apps to register with C2DM, receive registration IDs, get messages, and handle the messages within the app. Code snippets demonstrate integrating C2DM into the Android manifest and implementing a C2DM receiver.
Android Cloud To Device Messaging
- 1. Fernando Cejas - @fernando_cejas Fernando García - @fegabe
- 2. Introduction What’s Push? Push vs. Poll Cloud to device messaging Android Implementation Build your app ? F.A.Q
- 3. “fastDove Push” Who we are? App for this demo http://bit.ly/ac2dm_sample
- 4. Push technology, or server push, describes a style of Internet- based communication where the request for a given transaction is initiated by the publisher or central server. Harder to implement Less battery consumption Constant connection
- 5. Push me your news! Any news? No! Any news? No! Any news? No! New News! content! Any news? Yes! (News) Transfer content as soon as available Save device battery Reduce data traffic for user
- 6. HaIt allows third-party application servers to send lightweight messages to their Android applications C2DM makes no guarantees about delivery or the order of messages Anapplication on an Android device doesn’t need to be running to receive messages
- 7. Itdoes not provide any built-in user interface or other handling for message data Itrequires devices running Android 2.2 or higher that also have the Market application installed Ituses an existing connection for Google services
- 8. 1. Register device for Push 3. Device receives message 2. App server send message 4. Unregister device
- 9. Requesting a Registration ID C2DMessaging.register(this, "sender@gmail.com");
- 10. Receiving the Registration ID public class C2DMReceiver extends C2DMBaseReceiver { public C2DMReceiver() { super("sender@gmail.com"); } @Override public void onRegistered(Context context, String registrationId) { // TODO send registration ID to the app server } ... }
- 11. Receiving Messages public class C2DMReceiver extends C2DMBaseReceiver { ... @Override protected void onMessage(Context context, Intent intent) { String payload = intent.getStringExtra("payload"); // TODO handle the message } }
- 12. Android Manifest <application> ... <!-- required for AC2DM --> <service android:name="com.fastdove.sample.ac2dm.C2DMReceiver" /> <receiver android:name="com.google.android.c2dm.C2DMBroadcastReceiver" android:permission="com.google.android.c2dm.permission.SEND"> <intent-filter> <action android:name="com.google.android.c2dm.intent.REGISTRATION" /> <category android:name="com.fastdove.sample.ac2dm" /> </intent-filter> <intent-filter> <action android:name="com.google.android.c2dm.intent.RECEIVE" /> <category android:name="com.fastdove.sample.ac2dm" /> </intent-filter> </receiver> <!-- END required for AC2DM --> </application>
- 13. Android Manifest <application> ... </application> <!-- required for AC2DM --> <permission android:name="com.fastdove.notifications.demo.permission.C2D_MESSAGE" android:protectionLevel="signature" /> <uses-permission android:name="com.fastdove.notifications.demo.permission.C2D_MESSAGE" /> <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.WAKE_LOCK" /> <!-- END required for AC2DM -->
- 14. Request Authorization Token $ curl https://www.google.com/accounts/ClientLogin -d accountType=GOOGLE -d source=Google-cURL-Example -d service=ac2dm -d Email=sender@gmail.com -d "Passwd=***" Send Message $ curl --header "Authorization: GoogleLogin auth=authorization_id" "https://android.apis.google.com/c2dm/send" -d registration_id=device_registration_id -d "data.payload=your message" -d collapse_key=something
- 17. http://www.fastdove.com/ @fastdove @fastdovedev info@fastdove.com Fernando Cejas - @fernando_cejas Fernando García - @fegabe
- 18. Say thanks to the people I got information from: @johanni @vogella