I followed the example from developers.google.com and create simple services for retrieve Token and messages from GCM.
Class for token receive
public class RegistrationIntentService extends IntentService {
private static final String TAG = "RegIntentService";
private static final String[] TOPICS = {"global"};
private String projectNumber = "gcm-test-xxxxx";
public RegistrationIntentService() {
super(TAG);
}
@Override
protected void onHandleIntent(Intent intent) {
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
try {
InstanceID instanceID = InstanceID.getInstance(this);
String token = instanceID.getToken(projectNumber,
GoogleCloudMessaging.INSTANCE_ID_SCOPE, null);
sendRegistrationToServer(token);
subscribeTopics(token);
sharedPreferences.edit().putBoolean(QuickstartPreferences.SENT_TOKEN_TO_SERVER, true).apply();
} catch (IOException e) {
Log.d(TAG, "Failed to complete token refresh", e);
sharedPreferences.edit().putBoolean(QuickstartPreferences.SENT_TOKEN_TO_SERVER, false).apply();
}
Intent registrationComplete = new Intent(QuickstartPreferences.REGISTRATION_COMPLETE);
LocalBroadcastManager.getInstance(this).sendBroadcast(registrationComplete);
}
private void subscribeTopics(String token) {
}
private void sendRegistrationToServer(String token) throws IOException {
GcmPubSub pubSub = GcmPubSub.getInstance(this);
for (String topic : TOPICS) {
pubSub.subscribe(token, "/topics/" + topic, null);
}
}
}
This class works fine, I can retrieve token and do what i want with it.
I am starting this class as a service from MainActivity
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
startService(new Intent(this, RegistrationIntentService.class));
}
}
Also i have class for retrieving messages from GCM. This class don't work at all.
public class MyGcmListenerService extends GcmListenerService {
String TAG = "MyGcmListenerService";
@Override
public void onMessageReceived(String from, Bundle data) {
String message = data.getString("message");
Log.d(TAG, "From: " + from);
Log.d(TAG, "Message: " + message);
}
}
All this stuff was registered in manifest.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="gcm_test.app">
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme">
<activity
android:name=".MainActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
<receiver
android:name="com.google.android.gms.gcm.GcmReceiver"
android:exported="true"
android:permission="com.google.android.c2dm.permission.SEND" >
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<category android:name="gcm_test.app" />
</intent-filter>
</receiver>
<service
android:name=".gcm.MyGcmListenerService"
android:exported="false">
<intent-filter>
<action android:name="com.google.android.c2dm.intent.RECEIVE"/>
</intent-filter>
</service>
<service
android:name=".gcm.RegistrationIntentService"
android:exported="false">
</service>
</application>
</manifest>
I send messages with postman.
POST https://android.googleapis.com/gcm/send
headers
Content-Type:application/json
Authorization:key= keyFromGoogleDevelopersConsole
{
"to" : "/topics/global",
"data":{
"message": "Hello world!!!"
}
}
After send I receive 200 OK and message ID, but phone did not receive any messages.
What I am doing is wrong? How receive my messages?
I have changed SenderID to numbers from Developers Console but it did not help me. Aslo I have noticed Errors in debug console:
11-21 17:32:58.014 31813-31813/gcm_test.app E/dalvikvm﹕ Could not find class 'android.app.Notification$BigTextStyle', referenced from method com.google.android.gms.common.GooglePlayServicesUtil.zza
11-21 17:32:58.024 31813-31813/gcm_test.app E/dalvikvm﹕ Could not find class 'android.os.UserManager', referenced from method com.google.android.gms.common.GooglePlayServicesUtil.zzap
11-21 17:32:58.027 31813-31813/gcm_test.app E/dalvikvm﹕ Could not find class 'android.app.AppOpsManager', referenced from method com.google.android.gms.common.GooglePlayServicesUtil.zzb
I thought this service that retrives the messages need somehow register or start. But when I run it like simple service it crashes.
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