Checking for registration ID and registering app
This commit is contained in:
Dan Galpin
@@ -15,8 +15,14 @@
|
||||
*/
|
||||
package com.example.android.sunshine.app;
|
||||
|
||||
import android.app.AlertDialog;
|
||||
import android.content.Context;
|
||||
import android.content.Intent;
|
||||
import android.content.SharedPreferences;
|
||||
import android.content.pm.PackageInfo;
|
||||
import android.content.pm.PackageManager;
|
||||
import android.net.Uri;
|
||||
import android.os.AsyncTask;
|
||||
import android.os.Bundle;
|
||||
import android.support.v7.app.ActionBarActivity;
|
||||
import android.util.Log;
|
||||
@@ -26,15 +32,28 @@ import android.view.MenuItem;
|
||||
import com.example.android.sunshine.app.sync.SunshineSyncAdapter;
|
||||
import com.google.android.gms.common.ConnectionResult;
|
||||
import com.google.android.gms.common.GooglePlayServicesUtil;
|
||||
import com.google.android.gms.gcm.GoogleCloudMessaging;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.util.concurrent.atomic.AtomicInteger;
|
||||
|
||||
public class MainActivity extends ActionBarActivity implements ForecastFragment.Callback {
|
||||
|
||||
private final String LOG_TAG = MainActivity.class.getSimpleName();
|
||||
private static final String DETAILFRAGMENT_TAG = "DFTAG";
|
||||
private final static int PLAY_SERVICES_RESOLUTION_REQUEST = 9000;
|
||||
public static final String PROPERTY_REG_ID = "registration_id";
|
||||
private static final String PROPERTY_APP_VERSION = "appVersion";
|
||||
|
||||
/**
|
||||
* Substitute you own sender ID here. This is the project number you got
|
||||
* from the API Console.
|
||||
*/
|
||||
String SENDER_ID = "Your-Sender-ID";
|
||||
|
||||
private boolean mTwoPane;
|
||||
private String mLocation;
|
||||
private GoogleCloudMessaging mGcm;
|
||||
|
||||
@Override
|
||||
protected void onCreate(Bundle savedInstanceState) {
|
||||
@@ -66,12 +85,26 @@ public class MainActivity extends ActionBarActivity implements ForecastFragment.
|
||||
|
||||
SunshineSyncAdapter.initializeSyncAdapter(this);
|
||||
|
||||
if (!checkPlayServices()) {
|
||||
// this is where we could either prompt a user that they should install
|
||||
// the latest version of Google Play Services, or add an error snackbar
|
||||
// that some features won't be available.
|
||||
}
|
||||
// If Google Play Services is not available, some features, such as GCM-powered weather
|
||||
// alerts, will not be available.
|
||||
if (checkPlayServices()) {
|
||||
mGcm = GoogleCloudMessaging.getInstance(this);
|
||||
String regId = getRegistrationId(this);
|
||||
|
||||
if (SENDER_ID.equals("Your-Sender-ID")) {
|
||||
new AlertDialog.Builder(this)
|
||||
.setTitle("Needs Sender ID")
|
||||
.setMessage("GCM will not function in Sunshine until you replace your Sender ID with a Sender ID from the Google Developers Console.")
|
||||
.setPositiveButton(android.R.string.ok, null)
|
||||
.create().show();
|
||||
} else if (regId.isEmpty()) {
|
||||
registerInBackground(this);
|
||||
}
|
||||
} else {
|
||||
Log.i(LOG_TAG, "No valid Google Play Services APK. Weather alerts will be disabled.");
|
||||
// Store regID as null
|
||||
storeRegistrationId(this, null);
|
||||
}
|
||||
}
|
||||
|
||||
@Override
|
||||
@@ -162,4 +195,113 @@ public class MainActivity extends ActionBarActivity implements ForecastFragment.
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Gets the current registration ID for application on GCM service.
|
||||
* <p>
|
||||
* If result is empty, the app needs to register.
|
||||
*
|
||||
* @return registration ID, or empty string if there is no existing
|
||||
* registration ID.
|
||||
*/
|
||||
private String getRegistrationId(Context context) {
|
||||
final SharedPreferences prefs = getGCMPreferences(context);
|
||||
String registrationId = prefs.getString(PROPERTY_REG_ID, "");
|
||||
if (registrationId.isEmpty()) {
|
||||
Log.i(LOG_TAG, "GCM Registration not found.");
|
||||
return "";
|
||||
}
|
||||
|
||||
// Check if app was updated; if so, it must clear the registration ID
|
||||
// since the existing registration ID is not guaranteed to work with
|
||||
// the new app version.
|
||||
int registeredVersion = prefs.getInt(PROPERTY_APP_VERSION, Integer.MIN_VALUE);
|
||||
int currentVersion = getAppVersion(context);
|
||||
if (registeredVersion != currentVersion) {
|
||||
Log.i(LOG_TAG, "App version changed.");
|
||||
return "";
|
||||
}
|
||||
return registrationId;
|
||||
}
|
||||
|
||||
/**
|
||||
* @return Application's {@code SharedPreferences}.
|
||||
*/
|
||||
private SharedPreferences getGCMPreferences(Context context) {
|
||||
// Sunshine persists the registration ID in shared preferences, but
|
||||
// how you store the registration ID in your app is up to you. Just make sure
|
||||
// that it is private!
|
||||
return getSharedPreferences(MainActivity.class.getSimpleName(), Context.MODE_PRIVATE);
|
||||
}
|
||||
|
||||
/**
|
||||
* @return Application's version code from the {@code PackageManager}.
|
||||
*/
|
||||
private static int getAppVersion(Context context) {
|
||||
try {
|
||||
PackageInfo packageInfo = context.getPackageManager()
|
||||
.getPackageInfo(context.getPackageName(), 0);
|
||||
return packageInfo.versionCode;
|
||||
} catch (PackageManager.NameNotFoundException e) {
|
||||
// Should never happen. WHAT DID YOU DO?!?!
|
||||
throw new RuntimeException("Could not get package name: " + e);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Registers the application with GCM servers asynchronously.
|
||||
* <p>
|
||||
* Stores the registration ID and app versionCode in the application's
|
||||
* shared preferences.
|
||||
*/
|
||||
private void registerInBackground(final Context context) {
|
||||
new AsyncTask<Void, Void, Void>() {
|
||||
@Override
|
||||
protected Void doInBackground(Void... params) {
|
||||
String msg = "";
|
||||
try {
|
||||
if (mGcm == null) {
|
||||
mGcm = GoogleCloudMessaging.getInstance(context);
|
||||
}
|
||||
String regId = mGcm.register(SENDER_ID);
|
||||
msg = "Device registered, registration ID=" + regId;
|
||||
|
||||
// You should send the registration ID to your server over HTTP,
|
||||
// so it can use GCM/HTTP or CCS to send messages to your app.
|
||||
// The request to your server should be authenticated if your app
|
||||
// is using accounts.
|
||||
//sendRegistrationIdToBackend();
|
||||
// For this demo: we don't need to send it because the device
|
||||
// will send upstream messages to a server that echo back the
|
||||
// message using the 'from' address in the message.
|
||||
|
||||
// Persist the registration ID - no need to register again.
|
||||
storeRegistrationId(context, regId);
|
||||
} catch (IOException ex) {
|
||||
msg = "Error :" + ex.getMessage();
|
||||
// TODO(joannasmith): If there is an error, don't just keep trying to register.
|
||||
// Require the user to click a button again, or perform
|
||||
// exponential back-off.
|
||||
}
|
||||
return null;
|
||||
}
|
||||
}.execute(null, null, null);
|
||||
}
|
||||
|
||||
/**
|
||||
* Stores the registration ID and app versionCode in the application's
|
||||
* {@code SharedPreferences}.
|
||||
*
|
||||
* @param context application's context.
|
||||
* @param regId registration ID
|
||||
*/
|
||||
private void storeRegistrationId(Context context, String regId) {
|
||||
final SharedPreferences prefs = getGCMPreferences(context);
|
||||
int appVersion = getAppVersion(context);
|
||||
Log.i(LOG_TAG, "Saving regId on app version " + appVersion);
|
||||
SharedPreferences.Editor editor = prefs.edit();
|
||||
editor.putString(PROPERTY_REG_ID, regId);
|
||||
editor.putInt(PROPERTY_APP_VERSION, appVersion);
|
||||
editor.commit();
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user