Implement optional foreground service

app/src/main/java/org/traccar/client/MainActivity.java

@@ -40,6 +40,7 @@ public class MainActivity extends PreferenceActivity implements OnSharedPreferen
     public static final String KEY_INTERVAL = "interval";
     public static final String KEY_PROVIDER = "provider";
     public static final String KEY_STATUS = "status";
+    public static final String KEY_FOREGROUND = "foreground";
 
     private boolean firstLaunch; // DELME
 
@@ -81,6 +82,7 @@ public class MainActivity extends PreferenceActivity implements OnSharedPreferen
         preferenceScreen.findPreference(KEY_PORT).setEnabled(enabled);
         preferenceScreen.findPreference(KEY_INTERVAL).setEnabled(enabled);
         preferenceScreen.findPreference(KEY_PROVIDER).setEnabled(enabled);
+        preferenceScreen.findPreference(KEY_FOREGROUND).setEnabled(enabled);
     }
 
     @Override

app/src/main/java/org/traccar/client/TrackingService.java

@@ -16,18 +16,24 @@
 package org.traccar.client;
 
 import android.annotation.TargetApi;
+import android.app.Notification;
+import android.app.PendingIntent;
 import android.app.Service;
 import android.content.Intent;
 import android.os.Build;
 import android.os.IBinder;
+import android.preference.PreferenceManager;
 import android.util.Log;
 
 public class TrackingService extends Service {
 
     private static final String TAG = TrackingService.class.getSimpleName();
+    private static final int NOTIFICATION_ID = 1;
 
     private TrackingController trackingController;
 
+    private boolean foreground;
+
     @Override
     public void onCreate() {
         Log.i(TAG, "service create");
@@ -35,6 +41,8 @@ public class TrackingService extends Service {
 
         trackingController = new TrackingController(this);
         trackingController.start();
+
+        foreground = PreferenceManager.getDefaultSharedPreferences(this).getBoolean(MainActivity.KEY_FOREGROUND, false);
     }
 
     @Override
@@ -46,6 +54,17 @@ public class TrackingService extends Service {
     @Override
     public void onStart(Intent intent, int startId) {
         AutostartReceiver.completeWakefulIntent(intent);
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ECLAIR && foreground) {
+            Intent notificationIntent = new Intent(this, MainActivity.class);
+            PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
+
+            Notification notification = new Notification(android.R.drawable.stat_notify_sync_noanim, null, 0);
+            notification.setLatestEventInfo(
+                    this, getString(R.string.app_name), getString(R.string.settings_status_on_summary), pendingIntent);
+
+            startForeground(NOTIFICATION_ID, notification);
+        }
     }
 
     @TargetApi(Build.VERSION_CODES.ECLAIR)
@@ -60,6 +79,10 @@ public class TrackingService extends Service {
         Log.i(TAG, "service destroy");
         StatusActivity.addMessage(getString(R.string.status_service_destroy));
 
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ECLAIR && foreground) {
+            stopForeground(true);
+        }
+
         if (trackingController != null) {
             trackingController.stop();
         }