Start the foreground service when users start live location sharing.

vector/src/main/java/im/vector/app/features/location/LocationSharingFragment.kt

@@ -16,11 +16,13 @@
 
 package im.vector.app.features.location
 
+import android.content.Intent
 import android.graphics.drawable.Drawable
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import androidx.core.content.ContextCompat
 import androidx.core.view.isGone
 import androidx.lifecycle.lifecycleScope
 import com.airbnb.mvrx.fragmentViewModel
@@ -83,9 +85,10 @@ class LocationSharingFragment @Inject constructor(
 
         viewModel.observeViewEvents {
             when (it) {
-                LocationSharingViewEvents.Close                     -> locationSharingNavigator.quit()
-                LocationSharingViewEvents.LocationNotAvailableError -> handleLocationNotAvailableError()
-                is LocationSharingViewEvents.ZoomToUserLocation     -> handleZoomToUserLocationEvent(it)
+                LocationSharingViewEvents.Close                       -> locationSharingNavigator.quit()
+                LocationSharingViewEvents.LocationNotAvailableError   -> handleLocationNotAvailableError()
+                is LocationSharingViewEvents.ZoomToUserLocation       -> handleZoomToUserLocationEvent(it)
+                is LocationSharingViewEvents.StartLiveLocationService -> handleStartLiveLocationService(it)
             }.exhaustive
         }
     }
@@ -177,6 +180,17 @@ class LocationSharingFragment @Inject constructor(
         views.mapView.zoomToLocation(event.userLocation.latitude, event.userLocation.longitude)
     }
 
+    private fun handleStartLiveLocationService(event: LocationSharingViewEvents.StartLiveLocationService) {
+        Intent(requireContext(), LocationSharingService::class.java)
+                .apply {
+                    putExtra(LocationSharingService.EXTRA_SESSION_ID, event.sessionId)
+                    putExtra(LocationSharingService.EXTRA_ROOM_ID, event.roomId)
+                }
+                .also {
+                    ContextCompat.startForegroundService(requireContext(), it)
+                }
+    }
+
     private fun initOptionsPicker() {
         // set no option at start
         views.shareLocationOptionsPicker.render()

vector/src/main/java/im/vector/app/features/location/LocationSharingService.kt

@@ -16,12 +16,45 @@
 
 package im.vector.app.features.location
 
-import android.app.Service
 import android.content.Intent
 import android.os.IBinder
+import dagger.hilt.android.AndroidEntryPoint
+import im.vector.app.core.services.VectorService
+import im.vector.app.features.notifications.NotificationUtils
+import timber.log.Timber
+import javax.inject.Inject
+
+@AndroidEntryPoint
+class LocationSharingService : VectorService() {
+
+    @Inject lateinit var notificationUtils: NotificationUtils
+
+    private var sessionId: String? = null
+    private var roomId: String? = null
+
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        sessionId = intent?.getStringExtra(EXTRA_SESSION_ID)
+        roomId = intent?.getStringExtra(EXTRA_ROOM_ID)
+
+        Timber.d("LocationSharingService $sessionId - $roomId")
+
+        if (sessionId == null || roomId == null) {
+            stopForeground(true)
+            stopSelf()
+        }
+
+        val notification = notificationUtils.buildLiveLocationSharingNotification()
+        startForeground(roomId!!.hashCode(), notification)
+
+        return START_STICKY
+    }
 
-class LocationSharingService : Service() {
     override fun onBind(intent: Intent?): IBinder? {
         return null
     }
+
+    companion object {
+        const val EXTRA_SESSION_ID = "EXTRA_SESSION_ID"
+        const val EXTRA_ROOM_ID = "EXTRA_ROOM_ID"
+    }
 }

vector/src/main/java/im/vector/app/features/location/LocationSharingViewEvents.kt

@@ -22,4 +22,5 @@ sealed class LocationSharingViewEvents : VectorViewEvents {
     object Close : LocationSharingViewEvents()
     object LocationNotAvailableError : LocationSharingViewEvents()
     data class ZoomToUserLocation(val userLocation: LocationData) : LocationSharingViewEvents()
+    data class StartLiveLocationService(val sessionId: String, val roomId: String) : LocationSharingViewEvents()
 }

vector/src/main/java/im/vector/app/features/location/LocationSharingViewModel.kt

@@ -160,8 +160,10 @@ class LocationSharingViewModel @AssistedInject constructor(
     }
 
     private fun handleStartLiveLocationSharingAction() {
-        // TODO start sharing live location and update view state
-        Timber.d("live location sharing started")
+        _viewEvents.post(LocationSharingViewEvents.StartLiveLocationService(
+                sessionId = session.sessionId,
+                roomId = room.roomId
+        ))
     }
 
     override fun onLocationUpdate(locationData: LocationData) {

vector/src/main/java/im/vector/app/features/notifications/NotificationUtils.kt

@@ -521,6 +521,18 @@ class NotificationUtils @Inject constructor(private val context: Context,
         return builder.build()
     }
 
+    /**
+     * Creates a notification that indicates the application is retrieving location even if it is in background or killed.
+     */
+    fun buildLiveLocationSharingNotification(): Notification {
+        return NotificationCompat.Builder(context, SILENT_NOTIFICATION_CHANNEL_ID)
+                .setContentTitle(stringProvider.getString(R.string.live_location_sharing_notification_title))
+                .setContentText(stringProvider.getString(R.string.live_location_sharing_notification_description))
+                .setSmallIcon(R.drawable.ic_location_pin)
+                .setCategory(NotificationCompat.CATEGORY_LOCATION_SHARING)
+                .build()
+    }
+
     fun buildDownloadFileNotification(uri: Uri, fileName: String, mimeType: String): Notification {
         return NotificationCompat.Builder(context, SILENT_NOTIFICATION_CHANNEL_ID)
                 .setGroup(stringProvider.getString(R.string.app_name))

vector/src/main/res/values/strings.xml

@@ -2946,6 +2946,8 @@
     <string name="settings_enable_location_sharing_summary">Once enabled you will be able to send your location to any room</string>
     <string name="labs_render_locations_in_timeline">Render user locations in the timeline</string>
     <string name="location_timeline_failed_to_load_map">Failed to load map</string>
+    <string name="live_location_sharing_notification_title">${app_name} Live Location</string>
+    <string name="live_location_sharing_notification_description">Location sharing is in progress</string>
 
     <string name="message_bubbles">Show Message bubbles</string>