Shortened interval to resend event when connectivity was missing, Added the ConnectivityChangedReceiver that listens for OS broadcasts about connectivity when the connectivity was lost

mobile/com.sap.sailing.racecommittee.app/AndroidManifest.xml

@@ -66,8 +66,11 @@
                 <action android:name="com.sap.sailing.racecommittee.app.action.sendEvent" />
             </intent-filter>
         </service>
-        
-        
+        <receiver android:name=".receiver.ConnectivityChangedReceiver">
+            <intent-filter>
+                <action android:name="android.net.conn.CONNECTIVITY_CHANGE"/>
+            </intent-filter>
+        </receiver>
         
     </application>
 

mobile/com.sap.sailing.racecommittee.app/src/com/sap/sailing/racecommittee/app/receiver/ConnectivityChangedReceiver.java

@@ -0,0 +1,52 @@
+/**
+ * 
+ */
+package com.sap.sailing.racecommittee.app.receiver;
+
+import android.content.BroadcastReceiver;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
+
+import com.sap.sailing.racecommittee.app.R;
+
+public class ConnectivityChangedReceiver extends BroadcastReceiver {
+
+    /* (non-Javadoc)
+     * @see android.content.BroadcastReceiver#onReceive(android.content.Context, android.content.Intent)
+     */
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        NetworkInfo networkInfo = (NetworkInfo)intent.getParcelableExtra(ConnectivityManager.EXTRA_NETWORK_INFO);
+        if (!networkInfo.isConnected())
+            return;
+        Intent sendSavedIntent = new Intent(context.getResources().getString(R.string.intentActionSendSavedIntents));
+        context.startService(sendSavedIntent);
+
+        disable(context);
+    }
+
+    /**
+     * disables the Connectivity Changed Receiver as there is currently connectivity
+     * @param context the context to work on
+     */
+    public static void disable(Context context) {
+        ComponentName receiver = new ComponentName(context, ConnectivityChangedReceiver.class);
+        PackageManager packageManager = context.getPackageManager();
+        packageManager.setComponentEnabledSetting(receiver, PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP);
+    }
+
+    /**
+     * enables the Connectivity Changed Receiver to listen on connectivity changes as there is currently no connectivity
+     * @param context the context to work on
+     */
+    public static void enable(Context context) {
+        ComponentName receiver = new ComponentName(context, ConnectivityChangedReceiver.class);
+        PackageManager packageManager = context.getPackageManager();
+        packageManager.setComponentEnabledSetting(receiver, PackageManager.COMPONENT_ENABLED_STATE_ENABLED, PackageManager.DONT_KILL_APP);
+    }
+
+}

mobile/com.sap.sailing.racecommittee.app/src/com/sap/sailing/racecommittee/app/services/sending/EventSendingService.java

@@ -21,6 +21,7 @@ import com.sap.sailing.racecommittee.app.data.DataManager;
 import com.sap.sailing.racecommittee.app.data.ReadonlyDataManager;
 import com.sap.sailing.racecommittee.app.domain.ManagedRace;
 import com.sap.sailing.racecommittee.app.logging.ExLog;
+import com.sap.sailing.racecommittee.app.receiver.ConnectivityChangedReceiver;
 import com.sap.sailing.racecommittee.app.services.sending.EventSenderTask.EventSendingListener;
 
 /*
@@ -145,7 +146,7 @@ public class EventSendingService extends Service implements EventSendingListener
     private void handleSendEvents(Intent intent) {
         if (!isConnected()) {
             persistenceManager.persistIntent(intent);
-            //ConnectivityChangedReceiver.enable(this);
+            ConnectivityChangedReceiver.enable(this);
         } else {
             sendEvent(intent);
         }
@@ -181,7 +182,7 @@ public class EventSendingService extends Service implements EventSendingListener
             persistenceManager.persistIntent(intent);
             if (!isHandlerSet) {
                 SendDelayedEventsCaller delayedCaller = new SendDelayedEventsCaller(this);
-                handler.postDelayed(delayedCaller, 1000 * 60 * 1);
+                handler.postDelayed(delayedCaller, 1000 * 30); //after 30 sec, try the sending again
                 isHandlerSet = true;
             }
         } else {