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POShould i require a new token every time i launch my Android App?
 

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  1. POShould i require a new token every time i launch my Android App?
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    <p>I know that in Android as in iOS and WP7 (<a href="https://stackoverflow.com/questions/16422177/in-which-mobile-platforms-the-push-token-is-not-permanent">In which mobile platforms the “push token” is not permanent?)</a> the push token provided to the device <em>CAN</em> change.</p> <p>That means we should handle this by requiring a new token ,at least every time our application launches.</p> <p><em>However</em> , this comes to complete contradiction to what i 've found so far in googles tutorials.(I cant remember where exactly i 've found this code , but i am pretty sure it was provided by google) The code looks like this :</p> <pre><code> //registering for push GCMRegistrar.checkDevice(this); GCMRegistrar.checkManifest(this); final String regId = GCMRegistrar.getRegistrationId(this); if (regId.equals("")) { GCMRegistrar.register(this, SENDER_ID); Log.i("****************","I just Registered!!"); } else { Log.i("****************","Already registered"); } </code></pre> <p>The code above will execute the <code>GCMRegistrar.register(this, SENDER_ID);</code> line only once , the first time that the application launches. But i guess this ir wrong right? Because if the token changes , there is not way that our application will see that as it requires a token only once..</p> <h2>EDIT</h2> <hr> <p>Actually i just found where exactly was that code. Take a look here : <a href="http://developer.android.com/google/gcm/gs.html" rel="nofollow noreferrer">Get Started Guide</a></p> <p>I am quoting :</p> <p><strong><em>In the onCreate() method, add the following code:</em></strong></p> <pre><code>GCMRegistrar.checkDevice(this); GCMRegistrar.checkManifest(this); final String regId = GCMRegistrar.getRegistrationId(this); if (regId.equals("")) { GCMRegistrar.register(this, SENDER_ID); } else { Log.v(TAG, "Already registered"); } </code></pre> <p>When you register the device , the <code>onRegistered(Context context, String regId):</code> function is called. About this function the tutorial says :</p> <p><strong>onRegistered(Context context, String regId):</strong> <em>Called after a registration intent is received, passes the registration ID assigned by GCM to that device/application pair as parameter. Typically, you should send the regid to your server so it can use it to send messages to this device.</em></p> <p>So it says that i should send this id to my server. But the code before showed us that this function will be called just once ! So what happens when the token changes? How am i going to refresh it , to my server ? I think i should run this function every time the app launches ...</p> <p>Am i missing something here? Is the code wrong? Any thought would be helpful :)</p>
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