11package softwaremobility .darkgeat .sunshine ;
22
3+ import android .content .Context ;
34import android .content .Intent ;
45import android .content .SharedPreferences ;
6+ import android .content .pm .PackageInfo ;
7+ import android .content .pm .PackageManager ;
58import android .net .Uri ;
9+ import android .os .AsyncTask ;
610import android .preference .PreferenceManager ;
711import android .support .v7 .app .ActionBarActivity ;
812import android .os .Bundle ;
13+ import android .support .v7 .app .AlertDialog ;
14+ import android .util .Log ;
915import android .view .Menu ;
1016import android .view .MenuItem ;
1117
18+ import com .google .android .gms .common .ConnectionResult ;
19+ import com .google .android .gms .common .GooglePlayServicesUtil ;
20+ import com .google .android .gms .gcm .GoogleCloudMessaging ;
21+
22+ import java .io .IOException ;
23+ import java .sql .Connection ;
24+
1225import softwaremobility .darkgeat .sunshine .sync .SyncAdapter ;
1326
1427
@@ -17,12 +30,20 @@ public class MainActivity extends ActionBarActivity implements ForecastFragment.
1730 private String mLocation ;
1831 private boolean mTwoPane ;
1932 public static final String DETAILFRAGMENT_TAG = "DetailFragmentTAG" ;
33+ public static final String LOG_TAG = MainActivity .class .getSimpleName ();
34+ public static final String PROPERTY_REG_ID = "registration_id" ;
35+ private static final String PROPERTY_APP_VERSION = "appVersion" ;
36+ private static final int PLAY_SERVICES_RESOLUTION_REQUEST = 9000 ;
37+ private String SENDER_ID ;
38+ private GoogleCloudMessaging mGcm ;
2039
2140 @ Override
2241 protected void onCreate (Bundle savedInstanceState ) {
2342 super .onCreate (savedInstanceState );
2443 setContentView (R .layout .activity_main );
2544
45+ SENDER_ID = getString (R .string .projectIdNumber );
46+
2647 if (findViewById (R .id .detail_container ) != null ){
2748 mTwoPane = true ;
2849 if (savedInstanceState == null ){
@@ -34,6 +55,38 @@ protected void onCreate(Bundle savedInstanceState) {
3455 mTwoPane = false ;
3556 }
3657 SyncAdapter .initializeSyncAdapter (this );
58+ if (checkPlayServices ()) {
59+ mGcm = GoogleCloudMessaging .getInstance (this );
60+ String regId = getRegistrationId (this );
61+
62+ if (SENDER_ID .equals (getString (R .string .projectIdNumber ))) {
63+ new AlertDialog .Builder (this )
64+ .setTitle ("Needs Sender ID" )
65+ .setMessage ("GCM will not function in Sunshine until you replace your Sender ID with a Sender ID from the Google Developers Console." )
66+ .setPositiveButton (android .R .string .ok , null )
67+ .create ().show ();
68+ } else if (regId .isEmpty ()) {
69+ registerInBackground (this );
70+ }
71+ } else {
72+ Log .i (LOG_TAG , "No valid Google Play Services APK. Weather alerts will be disabled." );
73+ // Store regID as null
74+ storeRegistrationId (this , null );
75+ }
76+ }
77+
78+ private boolean checkPlayServices () {
79+ int resultCode = GooglePlayServicesUtil .isGooglePlayServicesAvailable (this );
80+ if (resultCode != ConnectionResult .SUCCESS ){
81+ if (GooglePlayServicesUtil .isUserRecoverableError (resultCode )){
82+ GooglePlayServicesUtil .getErrorDialog (resultCode ,this ,PLAY_SERVICES_RESOLUTION_REQUEST ).show ();
83+ }else {
84+ Log .i (LOG_TAG ,"This device is not supported." );
85+ finish ();
86+ }
87+ return false ;
88+ }
89+ return true ;
3790 }
3891
3992
@@ -105,4 +158,68 @@ public void onItemSelected(Uri dateUri) {
105158 startActivity (intent );
106159 }
107160 }
161+
162+ private void registerInBackground (final Context context ){
163+ new AsyncTask <Void ,Void ,Void >(){
164+
165+ @ Override
166+ protected Void doInBackground (Void ... params ) {
167+ String msg = "" ;
168+ try {
169+ if (mGcm == null ){
170+ mGcm = GoogleCloudMessaging .getInstance (context );
171+ }
172+ String regId = mGcm .register (SENDER_ID );
173+ msg = "Device registered, registration ID = " + regId ;
174+
175+ storeRegistrationId (context ,regId );
176+ Log .d (LOG_TAG , msg );
177+ }catch (IOException e ){}
178+ return null ;
179+ }
180+ }.execute ();
181+ }
182+
183+ private String getRegistrationId (Context context ){
184+ final SharedPreferences preferences = getGCMPreferences ();
185+ String registrationId = preferences .getString (PROPERTY_REG_ID ,"" );
186+ if (registrationId .isEmpty ()){
187+ Log .i (LOG_TAG ,"GCM Registration not Found" );
188+ return "" ;
189+ }
190+ int registeredVersion = preferences .getInt (PROPERTY_APP_VERSION ,Integer .MIN_VALUE );
191+ int currentVersion = getAppVersion (context );
192+ if (registeredVersion != currentVersion ){
193+ Log .i (LOG_TAG ,"App version changed." );
194+ return "" ;
195+ }
196+ return registrationId ;
197+ }
198+
199+ private void storeRegistrationId (Context context , String regId ) {
200+ final SharedPreferences preferences = getGCMPreferences ();
201+ int appVersion = getAppVersion (context );
202+ Log .i (LOG_TAG , "Saving regId on app version " + appVersion );
203+ SharedPreferences .Editor editor = preferences .edit ();
204+ editor .putString (PROPERTY_REG_ID ,regId );
205+ editor .putInt (PROPERTY_APP_VERSION , appVersion );
206+ editor .commit ();
207+ }
208+
209+ public static int getAppVersion (Context context ) {
210+ try {
211+ PackageInfo packageInfo = context .getPackageManager ().getPackageInfo (context .getPackageName (),0 );
212+ return packageInfo .versionCode ;
213+ } catch (PackageManager .NameNotFoundException e ) {
214+ e .printStackTrace ();
215+ throw new RuntimeException ("Could not get package name: " + e );
216+ }
217+ }
218+
219+ private SharedPreferences getGCMPreferences () {
220+ // Sunshine persists the registration ID in shared preferences, but
221+ // how you store the registration ID in your app is up to you. Just make sure
222+ // that it is private!
223+ return getSharedPreferences (LOG_TAG , Context .MODE_PRIVATE );
224+ }
108225}
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