I can not get registration ID from Android GCM

Question

Although I try other answer about this problem, it can't be solved. Sender ID is correct, permissions are added, API key is true.

I use this post for creating the project: http://developer.android.com/guide/google/gcm/gs.html#server-app

    GCMRegistrar.checkDevice(this);
    GCMRegistrar.checkManifest(this);
    String regId = GCMRegistrar.getRegistrationId(this);
    if (regId.equals("")) {
      GCMRegistrar.register(this, SENDER_ID);
      regId = GCMRegistrar.getRegistrationId(this);
    } else {
      Log.v(TAG, "Already registered");
    }
    String did = getDeviceID();

it returns empty string.

Please give more detail on your problem. What returned empty string? What were the logcat output after GCMRegistrar.register is called? — azgolfer, Jul 30 '12 at 03:45
thank you @azgolfer it is solved but now i can't send regid and device id to servlet, they seems null at servlet. Do you have any code about it. — Anil Kocabiyik, Jul 30 '12 at 11:56
I used first answer here: http://stackoverflow.com/questions/3505930/make-an-http-request-with-android I use extended AsyncTask. — Anil Kocabiyik, Jul 30 '12 at 12:04
@azgolfer logcat output 08-03 09:24:21.974: V/GCMRegistrar(14590): Registering receiver 08-03 09:24:21.974: D/GCMRegistrar(14590): resetting backoff for com.example.ilkgcm 08-03 09:24:21.984: V/GCMRegistrar(14590): Registering app com.example.ilkgcm of senders "my_sender_id" 08-03 09:24:36.248: A/libc(14590): Fatal signal 6 (SIGABRT) at 0x0000012f (code=0) — Anil Kocabiyik, Aug 03 '12 at 06:26
when GCMRegistrar.register is called, logcat output as above. Fatal signal appears in 10-15 seconds. — Anil Kocabiyik, Aug 03 '12 at 06:31
@user1451549 If your question was answered you should accept the answer... — Amir Uval, Sep 20 '12 at 20:27

Amir Uval · Accepted Answer · 2019-03-31T11:49:41.273

49

Do you have GCMIntentService defined correctly at the root package of your app?

<receiver android:name="com.google.android.gcm.GCMBroadcastReceiver" android:permission="com.google.android.c2dm.permission.SEND" >

  <intent-filter>
    <action android:name="com.google.android.c2dm.intent.RECEIVE" />
    <action android:name="com.google.android.c2dm.intent.REGISTRATION" />
    <category android:name="my_app_package" />
  </intent-filter>
</receiver>

Make sure that "my_app_package" is identical to the main package of your app, or your id will return an empty string.

Also notice that

    GCMRegistrar.register(this, "...");

is asynchronous. Therefore, calling GCMRegistrar.getRegistrationId(this) immediately after that is not reliable, so you should avoid it.

The id will arrive via broadcast callback to your GCMIntentService, as a part of the registration procedure. from there you can then store the gcm/fcm key anywhere you like, and use it in other parts of the application (usually on the server).

edited Mar 31 '19 at 11:49

answered Jul 31 '12 at 08:34

Amir Uval

14,425
4
50
74

for the callback? It's quite immediate. It's involving a communication with a system process, and the callback is coming from there. If you wait and it doesn't arrive it means something is wrong in your setup – Amir Uval Aug 02 '12 at 19:39
is it necessary to place the class in root package? – stinepike Jun 24 '13 at 07:15
3

It appears so, though it's not documented. My first attempt with GCM was not on the default package, and it failed. It worked when moved to root. – Amir Uval Jun 24 '13 at 11:18
Thanks, it helped alot. It's not documented but as per your suggestion GCM class should be on root package. – surhidamatya Nov 25 '13 at 08:12

EvanBlack · Answer 2 · 2014-04-14T13:05:26.497

11

If your application launches first time, you have to wait for OnRegistered callback on your GCMIntentService.java file.

GCMRegistrar.register(this, SENDER_ID);
// Android does NOT wait for registration ends and executes immediately line below
// So your regId will be empty.
regId = GCMRegistrar.getRegistrationId(this);

GCMIntentService.java:

@Override
protected void onRegistered(Context c, String regId) {
    // You can get it here!
}

Edit: Newer version of GCM library (which bundled with google play services library) waits for response and returns the Registration ID. So this answer is for older GCM libraries.

edited Apr 14 '14 at 13:05

answered Feb 15 '13 at 12:06

EvanBlack

759
8
25

Thanks...Exactly first time not getting regId is empty and after then again lunch this apps we would get the regID but this steps follow then I would first time apps lunch and get this gcm token..!!!:) – Najib.Nj Apr 28 '14 at 05:46

score 5 · Answer 3 · answered Feb 20 '14 at 05:48

I have same problem after 1 day struggle I find solution. First i Put my GCM Related Code in To My Main Package and make change according to My Package in androidManifest.xml

i give you simple example. My project name is GCMExample and i have Three package 1. com.examle.GCMExample(Main Package) , 2. com.examle.GCMExample.activity(Second Package) , 3. com.example.GCMExample.adapter(Third Package)

I am not Getting Registration Id When My GCM Related Class File Into My Second Package

My GCM Related class like 1. GCMIntentService , 2. ServerUtilities , 3. CommonUtilities 4. WakeLocker put Into My Main Package com.example.GCMExample

also my androidManifest.xml

     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.GET_ACCOUNTS" />
     <uses-permission android:name="android.permission.WAKE_LOCK" />
     <uses-permission android:name="android.permission.VIBRATE" />

     <permission android:name="com.example.GCMExample.permission.C2D_MESSAGE"
        android:protectionLevel="signature" />

     <uses-permission android:name="com.example.GCMExample.C2D_MESSAGE" />

    <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<receiver
        android:name="com.google.android.gcm.GCMBroadcastReceiver"
        android:permission="com.google.android.c2dm.permission.SEND" >
        <intent-filter>
        <!-- Receives the actual messages. -->
        <action android:name="com.google.android.c2dm.intent.RECEIVE" />
        <!-- Receives the registration id. -->
        <action android:name="com.google.android.c2dm.intent.REGISTRATION" />

        <category android:name="com.example.GCMExample" />
      </intent-filter>
</receiver>  

<service android:name="com.example.GCMExample.GCMIntentService" />

Patel Dhaval, your magical answer save my day but this is very strange :) Thanks for your great help! (Thumbs up) — Saad Bilal, Dec 24 '14 at 10:52

score 2 · Answer 4 · answered Oct 02 '12 at 09:51

2

Registering app com.example.ilkgcm of senders "my_sender_id" -- This error suggests you haven't changed your 'my_sender_id' to a valid sender id which would be a 12-letter code.

answered Oct 02 '12 at 09:51

divanshu

335
1
5
12

score 1 · Answer 5 · answered Jun 28 '13 at 22:49

1

If you are not getting response from the registration.one of the main reason is your manifest file is not configured correctly...especially give the "package_name"(your app package name like com.xxx.yyy) in the and correctly.

answered Jun 28 '13 at 22:49

Vinoth Prakash K

11
1

score 1 · Answer 6 · answered Jul 28 '13 at 21:25

1

For example your receiver class name is : "MyCustomIntentService.java" , just change this name as "GCMIntentService.java" then try it again. This is simple solution. Just change your file name on the SRC area.

answered Jul 28 '13 at 21:25

Twinsens

417
6
23

I can not get registration ID from Android GCM

6 Answers6

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