How to get RegistrationID using GCM in android

Question

I am trying to do push notification in android using GCM  I read the Google docs for GCM and their demo application  I created the client side program mentioned here  http   android amolgupta in   But i am not getting registration ID  Also I am not getting some points like    do i need to server program too with this on Google demo app they mention that i need to change api key at  samples gcm-demo-server WebContent WEB-INF classes api key  is it necessary to do it every time as i am creating new project    Can any one provide me proper project other than google provided so that i clear my concepts   Any help will be appreciated

User · Answer

Use this code to get Registration ID using GCM

String regId = "", msg = "";

public void getRegisterationID() {

    new AsyncTask() {
        @Override
        protected Object doInBackground(Object...params) {

            String msg = "";
            try {
                if (gcm == null) {
                    gcm = GoogleCloudMessaging.getInstance(Login.this);
                }
                regId = gcm.register(YOUR_SENDER_ID);
                Log.d("in async task", regId);

                // try
                msg = "Device registered, registration ID=" + regId;

            } catch (IOException ex) {
                msg = "Error :" + ex.getMessage();
            }
            return msg;
        }
    }.execute(null, null, null);
 }

and don't forget to write permissions in manifest...
I hope it helps!

User · Answer

Here I have written a few steps for How to Get RegID and Notification starting from scratch  Create Register App on Google Cloud Setup Cloud SDK with Development Configure project for GCM Get Device Registration ID Send Push Notifications Receive Push Notifications  You can find a complete tutorial here   Getting Started with Android Push Notification   Latest Google Cloud Messaging  GCM  - step by step complete tutorial   Code snippet to get Registration ID  Device Token for Push Notification   Configure project for GCM  Update AndroidManifest file To enable GCM in our project we need to add a few permissions to our manifest file  Go to AndroidManifest xml and add this code  Add Permissions  lt uses-permission android name  quot android permission INTERNET     gt   lt uses-permission android name  quot android permission GET ACCOUNTS quot    gt   lt uses-permission android name  quot android permission WAKE LOCK quot    gt    lt uses-permission android name  quot android permission VIBRATE quot    gt    lt uses-permission android name     permission RECEIVE quot    gt   lt uses-permission android name     lt your package name here gt  permission C2D MESSAGE quot    gt   lt permission android name     lt your package name here gt  permission C2D MESSAGE quot          android protectionLevel  quot signature quot    gt   Add GCM Broadcast Receiver declaration in your application tag   lt application          lt receiver             android name  quot  GcmBroadcastReceiver quot              android permission  quot com google android c2dm permission SEND quot     gt               lt intent-filter   gt                   lt action android name  quot com google android c2dm intent RECEIVE quot    gt                   lt category android name  quot  quot    gt               lt  intent-filter   gt            lt  receiver   gt         lt application  gt   Add GCM Service declaration  lt application       lt service android name  quot  GcmIntentService quot    gt   lt application  gt    Get Registration ID  Device Token for Push Notification  Now Go to your Launch Splash Activity Add Constants and Class Variables private final static int PLAY SERVICES RESOLUTION REQUEST   9000  public static final String EXTRA MESSAGE    quot message quot   public static final String PROPERTY REG ID    quot registration id quot   private static final String PROPERTY APP VERSION    quot appVersion quot   private final static String TAG    quot LaunchActivity quot   protected String SENDER ID    quot Your sender id quot   private GoogleCloudMessaging gcm  null  private String regid   null  private Context context  null   Update OnCreate and OnResume methods  Override protected void onCreate Bundle savedInstanceState        super onCreate savedInstanceState       setContentView R layout activity launch       context   getApplicationContext        if  checkPlayServices              gcm   GoogleCloudMessaging getInstance this           regid   getRegistrationId context            if  regid isEmpty                  registerInBackground              else               Log d TAG   quot No valid Google Play Services APK found  quot                        Override protected void onResume         super onResume        checkPlayServices             Implement GCM Required methods Add below methods in LaunchActivity   private boolean checkPlayServices         int resultCode   GooglePlayServicesUtil isGooglePlayServicesAvailable this       if  resultCode    ConnectionResult SUCCESS            if  GooglePlayServicesUtil isUserRecoverableError resultCode                 GooglePlayServicesUtil getErrorDialog resultCode  this                  PLAY SERVICES RESOLUTION REQUEST  show              else               Log d TAG   quot This device is not supported - Google Play Services  quot                finish                      return false            return true     private String getRegistrationId Context context        final SharedPreferences prefs   getGCMPreferences context       String registrationId   prefs getString PROPERTY REG ID   quot  quot        if  registrationId isEmpty              Log d TAG   quot Registration ID not found  quot            return  quot  quot             int registeredVersion   prefs getInt PROPERTY APP VERSION  Integer MIN VALUE       int currentVersion   getAppVersion context       if  registeredVersion    currentVersion            Log d TAG   quot App version changed  quot            return  quot  quot             return registrationId     private SharedPreferences getGCMPreferences Context context        return getSharedPreferences LaunchActivity class getSimpleName            Context MODE PRIVATE      private static int getAppVersion Context context        try           PackageInfo packageInfo   context getPackageManager                getPackageInfo context getPackageName    0           return packageInfo versionCode        catch  NameNotFoundException e            throw new RuntimeException  quot Could not get package name   quot    e             private void registerInBackground         new AsyncTask              Override         protected Object doInBackground Object   params                String msg    quot  quot               try                   if  gcm    null                        gcm   GoogleCloudMessaging getInstance context                                     regid   gcm register SENDER ID                   Log d TAG   quot                                          quot                    Log d TAG   quot Current Device s Registration ID is   quot    msg                 catch  IOException ex                    msg    quot Error   quot    ex getMessage                              return null                    protected void onPostExecute Object result                  to do here                  execute null  null  null       Note   please store REGISTRATION KEY  it is important for sending PN Message to GCM  Also keep in mind  this key will be unique for all devices and GCM will send Push Notifications by REGISTRATION KEY only

User · Answer

In response to your first question  Yes  you have to run a server app to send the messages  as well as a client app to receive them   In response to your second question  Yes  every application needs its own API key   This key is for your server app  not the client

[android] How to get RegistrationID using GCM in android

Examples related to android

Examples related to push-notification

Examples related to google-cloud-messaging