Switched to android.location api, removed google play services dependency

app/build.gradle

@@ -85,7 +85,4 @@ dependencies {
 
     // predict4java
     implementation "com.github.davidmoten:predict4java:$predict4java"
-
-    // location
-    implementation "com.google.android.gms:play-services-location:$google_play"
 }

app/src/main/java/com/rtbishop/look4sat/MainViewModel.kt

@@ -22,7 +22,7 @@ package com.rtbishop.look4sat
 import android.app.Application
 import android.content.Context
 import android.content.SharedPreferences
-import android.location.Location
+import android.location.LocationManager
 import android.util.Log
 import androidx.core.content.edit
 import androidx.lifecycle.AndroidViewModel
@@ -32,7 +32,6 @@ import androidx.lifecycle.viewModelScope
 import com.github.amsacode.predict4java.GroundStationPosition
 import com.github.amsacode.predict4java.SatNotFoundException
 import com.github.amsacode.predict4java.TLE
-import com.google.android.gms.location.FusedLocationProviderClient
 import com.rtbishop.look4sat.predict4kotlin.PassPredictor
 import com.rtbishop.look4sat.repo.Repository
 import com.rtbishop.look4sat.repo.SatPass
@@ -79,7 +78,7 @@ class MainViewModel(application: Application) : AndroidViewModel(application) {
     private var calculationJob: Job? = null
 
     @Inject
-    lateinit var locationClient: FusedLocationProviderClient
+    lateinit var locationManager: LocationManager
     @Inject
     lateinit var preferences: SharedPreferences
     @Inject
@@ -109,8 +108,11 @@ class MainViewModel(application: Application) : AndroidViewModel(application) {
         _gsp.postValue(GroundStationPosition(lat, lon, alt))
     }
 
-    fun getCurrentLocation() {
-        locationClient.lastLocation.addOnSuccessListener { location: Location? ->
+    fun updateLocation() {
+        val passiveProvider = LocationManager.PASSIVE_PROVIDER
+        try {
+            val location = locationManager.getLastKnownLocation(passiveProvider)
+
             val lat = location?.latitude ?: 0.0
             val lon = location?.longitude ?: 0.0
             val alt = location?.altitude ?: 0.0
@@ -123,6 +125,8 @@ class MainViewModel(application: Application) : AndroidViewModel(application) {
             }
             _gsp.postValue(GroundStationPosition(lat, lon, alt))
             _debugMessage.postValue(app.getString(R.string.update_loc_success))
+        } catch (e: SecurityException) {
+            _debugMessage.postValue(app.getString(R.string.err_no_permissions))
         }
     }
 

app/src/main/java/com/rtbishop/look4sat/di/AndroidModule.kt

@@ -21,9 +21,8 @@ package com.rtbishop.look4sat.di
 
 import android.content.Context
 import android.content.SharedPreferences
+import android.location.LocationManager
 import androidx.preference.PreferenceManager
-import com.google.android.gms.location.FusedLocationProviderClient
-import com.google.android.gms.location.LocationServices
 import dagger.Module
 import dagger.Provides
 import javax.inject.Singleton
@@ -39,7 +38,7 @@ class AndroidModule {
 
     @Singleton
     @Provides
-    fun provideLocationClient(context: Context): FusedLocationProviderClient {
-        return LocationServices.getFusedLocationProviderClient(context)
+    fun provideLocationManager(context: Context): LocationManager {
+        return context.getSystemService(Context.LOCATION_SERVICE) as LocationManager
     }
 }

app/src/main/java/com/rtbishop/look4sat/ui/MainActivity.kt

@@ -169,7 +169,7 @@ class MainActivity : AppCompatActivity() {
                 ActivityCompat.requestPermissions(this, arrayOf(permLocation), permLocationCode)
             }
         } else {
-            viewModel.getCurrentLocation()
+            viewModel.updateLocation()
         }
     }
 
@@ -177,7 +177,7 @@ class MainActivity : AppCompatActivity() {
         when (reqCode) {
             permLocationCode -> {
                 if (res.isNotEmpty() && res[0] == permGranted) {
-                    viewModel.getCurrentLocation()
+                    viewModel.updateLocation()
                 }
             }
         }

build.gradle

@@ -61,6 +61,4 @@ ext {
     dagger = '2.25.2'
 
     predict4java = '1.3.1'
-
-    google_play = '17.0.0'
 }