<< Broadcast Receiver class>>
public class GCMBroadcastReceiver extends WakefulBroadcastReceiver{
public static final String Key_Type = "Type";public static final String Key_Command = "CMD";
public static final String Key_Msg = "MSG";
@Override
public void onReceive(Context context, Intent intent) {Log.i("GCMBroadcastReceiver.onReceive","new message is received.");
Bundle extras = intent.getExtras();
String action = intent.getAction();
if(extras != null){
GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(context);String messageType = gcm.getMessageType(intent);
// read data from gcm
String type = intent.getStringExtra(Key_Type);
String command = intent.getStringExtra(Key_Command);String msg = intent.getStringExtra(Key_Msg);
// TODO you can add some specific code to do....
// You can start new service to do some works.
// startWakefulService(context, (intent.setComponent(comp)));
// see the artical in google developer's guide http://developer.android.com/google/gcm/client.html#sample-receive
}
}
}
7. Setup in AndroidManifast.xml file.(Client)
The instuction under ... http://developer.android.com/google/gcm/client.html#manifest
<manifest package="com.example.gcm" ...>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.WAKE_LOCK" /> <!-- I didn't add this permission -->
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<permission android:name="com.example.gcm.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
<uses-permission android:name="com.example.gcm.permission.C2D_MESSAGE" />
<application ...>
<receiver
android:name=".GcmBroadcastReceiver"
android:permission="com.google.android.c2dm.permission.SEND" >
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<category android:name="com.example.gcm" />
</intent-filter>
</receiver>
<service android:name=".GcmIntentService" /> <!-- if you created service to handle gcm messages you should add this service-->
</application>8. Implement GCM message sender.(Server)
- This is the PHP function to send gcm message to GCM connecton server.
- You can also send gcm message to GCM connection server from you android app.
- As you may not need it if you have a server to send the message, I will not add the codes. :-)
- I used Curl... and you can use the lib with comment off this extesion in php.ini, if you installed latest WAMP server.
- extension=php_curl.dll
function sendGCMMessage_($data, $registrationIDs)
{ $apiKey = 'GsfgaSFc13-2reIDSD4qK_3_dfghspVWDSxEAA'; // this is the brower key you generated in 3. Creating a Google API project and obtaining an API Key.
$senderId = "153023456724"; // this is the project code you generated in 3. Creating a Google API project and obtaining an API Key.
$url = 'https://android.googleapis.com/gcm/send';
$fields = array(
'delay_while_idle' => False, // If you want to receive message when the phone is idle, you have to set this 'False'. You can set this 'True' to save the battery.
'time_to_live' => 108,
'collapse_key' => 'score_update',
'registration_ids' => $registrationIDs,
'data' => $data,
);
$headers = array(
'Authorization: key=' . $apiKey,
'Sender: id=' . $senderId,
'Content-Type: application/json'
);
// Open connection
$ch = curl_init();
// Set the URL, number of POST vars, POST data
curl_setopt( $ch, CURLOPT_URL, $url);
curl_setopt( $ch, CURLOPT_POST, true);
curl_setopt( $ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode( $fields));
$result = curl_exec($ch);
return $result;
}
- how to call the function?? It is quite easy.
$registrationIDs = array("APA91bEr6sdfjJzIsdfO76YsdfsvQ5NGago9JvRYod0v-n...", "APA91bEr6zWLWizsdfMO76YVRdfsfQ5NGagdfYod0vdsf...");
// The registeration id you obtained in 5. Implement GCM register code.(Client). You can add multiful registeration ids.
$data = array("Type" => "My Type", "CMD" => 'My Command', "MSG" => "My Message" );
// You should add the same key value pairs just the same as you will receive in you client app you implemented in 6. Implement GCM receiver code.(Client).
$result = sendGCMMessage_($data, $registrationIDs);
