Fixed satellite track exception crash

app/src/main/java/com/rtbishop/look4sat/framework/LocationSource.kt

@@ -1,3 +1,20 @@
+/*
+ * Look4Sat. Amateur radio satellite tracker and pass predictor.
+ * Copyright (C) 2019-2021 Arty Bishop (bishop.arty@gmail.com)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
 package com.rtbishop.look4sat.framework
 
 import android.Manifest

app/src/main/java/com/rtbishop/look4sat/framework/PreferencesSource.kt

@@ -68,6 +68,11 @@ class PreferencesSource @Inject constructor(
         }
     }
 
+    fun updatePosition(latitude: Double, longitude: Double) {
+        val stationPosition = GeoPos(latitude, longitude)
+        saveStationPosition(stationPosition)
+    }
+
     fun updatePositionFromGPS(): Boolean {
         return try {
             val location = locationManager.getLastKnownLocation(LocationManager.PASSIVE_PROVIDER)

app/src/main/java/com/rtbishop/look4sat/presentation/mapScreen/MapFragment.kt

@@ -118,7 +118,7 @@ class MapFragment : Fragment(R.layout.fragment_map) {
                     textLabelFontSize = 24
                     textLabelBackgroundColor = Color.TRANSPARENT
                     textLabelForegroundColor =
-                        ContextCompat.getColor(requireContext(), R.color.themeLight)
+                        ContextCompat.getColor(requireContext(), R.color.themeAccent)
                     setTextIcon(it.key.params.name)
                     setAnchor(Marker.ANCHOR_CENTER, Marker.ANCHOR_CENTER)
                     try {

app/src/main/java/com/rtbishop/look4sat/presentation/settingsScreen/SettingsFragment.kt

@@ -18,8 +18,12 @@
 package com.rtbishop.look4sat.presentation.settingsScreen
 
 import android.Manifest
+import android.content.Context
 import android.content.Intent
 import android.content.pm.PackageManager
+import android.location.Location
+import android.location.LocationListener
+import android.location.LocationManager
 import android.net.Uri
 import android.os.Bundle
 import android.text.method.LinkMovementMethod
@@ -42,7 +46,7 @@ import dagger.hilt.android.AndroidEntryPoint
 import javax.inject.Inject
 
 @AndroidEntryPoint
-class SettingsFragment : Fragment(R.layout.fragment_settings) {
+class SettingsFragment : Fragment(R.layout.fragment_settings), LocationListener {
 
     @Inject
     lateinit var preferences: PreferencesSource
@@ -173,11 +177,13 @@ class SettingsFragment : Fragment(R.layout.fragment_settings) {
     }
 
     private fun updatePositionFromGPS() {
-        val locPermString = Manifest.permission.ACCESS_FINE_LOCATION
-        val locPermResult = ContextCompat.checkSelfPermission(requireContext(), locPermString)
-        if (locPermResult == PackageManager.PERMISSION_GRANTED) {
-            if (preferences.updatePositionFromGPS()) {
-                showSnack(getString(R.string.pref_pos_success))
+        val manager = requireContext().getSystemService(Context.LOCATION_SERVICE) as LocationManager
+        val provider = LocationManager.NETWORK_PROVIDER
+        val permission = Manifest.permission.ACCESS_COARSE_LOCATION
+        val result = ContextCompat.checkSelfPermission(requireContext(), permission)
+        if (result == PackageManager.PERMISSION_GRANTED) {
+            if (manager.isProviderEnabled(provider)) {
+                manager.requestLocationUpdates(provider, 0L, 0f, this)
             } else {
                 showSnack(getString(R.string.pref_pos_gps_null))
             }
@@ -204,4 +210,13 @@ class SettingsFragment : Fragment(R.layout.fragment_settings) {
         _binding = null
         super.onDestroyView()
     }
+
+    override fun onLocationChanged(location: Location) {
+        val manager = requireContext().getSystemService(Context.LOCATION_SERVICE) as LocationManager
+        manager.removeUpdates(this)
+        val latitude = location.latitude.round(4)
+        val longitude = location.longitude.round(4)
+        preferences.updatePosition(latitude, longitude)
+        showSnack(getString(R.string.pref_pos_success))
+    }
 }