feature 25 - device location

.gitignore

@@ -41,6 +41,8 @@ captures/
 .idea/dictionaries
 .idea/libraries
 .idea/caches
+.idea/misc.xml
+.idea/modules.xml
 
 # Keystore files
 # Uncomment the following line if you do not want to check your keystore files in.

app/build.gradle

@@ -43,8 +43,14 @@ dependencies {
     implementation "org.koin:koin-android-viewmodel:$koin_version"
 
     implementation 'com.android.support:recyclerview-v7:28.0.0'
-    implementation 'com.google.android.gms:play-services-maps:16.1.0'
-    implementation 'com.google.android.gms:play-services-location:11.8.0'
+
+    implementation 'com.google.android.gms:play-services-maps:17.0.0'
+    implementation 'com.google.android.gms:play-services-gcm:17.0.0'
+    implementation 'com.google.android.gms:play-services-location:17.0.0'
+
+    implementation 'com.google.firebase:firebase-firestore:21.2.0'
+    implementation 'com.google.firebase:firebase-core:17.2.0'
+    implementation 'androidx.lifecycle:lifecycle-extensions:2.1.0'
 
     implementation 'com.google.firebase:firebase-firestore:21.2.0'
     implementation 'com.google.firebase:firebase-core:17.2.0'

app/src/main/java/com/discordtime/gpts/maps/view/MapViewFragment.kt

@@ -1,34 +1,34 @@
 package com.discordtime.gpts.maps.view
 
-import android.annotation.SuppressLint
 import android.content.Context
-import android.graphics.Bitmap
-import android.graphics.Canvas
+import android.location.Location
 import android.os.Bundle
 import android.util.Log
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import androidx.core.content.ContextCompat
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.Observer
-import androidx.lifecycle.ViewModelProvider
-import androidx.lifecycle.ViewModelProviders
 import com.discordtime.gpts.R
+import com.discordtime.gpts.maps.viewmodel.LocationListener
+import com.discordtime.gpts.maps.viewmodel.LocationManager
 import com.discordtime.gpts.maps.viewmodel.MapViewModel
+import com.discordtime.gpts.tools.Constants
+import com.google.android.gms.maps.CameraUpdateFactory
 import com.google.android.gms.maps.GoogleMap
 import com.google.android.gms.maps.MapView
 import com.google.android.gms.maps.OnMapReadyCallback
-import com.google.android.gms.maps.CameraUpdateFactory
-import com.google.android.gms.maps.model.*
-import com.google.firebase.FirebaseApp
+import com.google.android.gms.maps.model.CameraPosition
+import com.google.android.gms.maps.model.LatLng
 import org.koin.android.viewmodel.ext.android.viewModel
 
-class MapViewFragment : Fragment(), OnMapReadyCallback {
+class MapViewFragment : Fragment(), OnMapReadyCallback, LocationListener {
 
     private val mapViewModel: MapViewModel by viewModel()
+    private lateinit var mContext: Context
     private lateinit var mMapView: MapView
-    private lateinit var googleMap: GoogleMap
+    private lateinit var mGoogleMap: GoogleMap
+    private lateinit var mLocationManager: LocationManager
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
         return inflater.inflate(R.layout.fragment_maps, container, false)
@@ -41,27 +41,42 @@ class MapViewFragment : Fragment(), OnMapReadyCallback {
         mMapView.onCreate(savedInstanceState)
         mMapView.onResume()
         mMapView.getMapAsync(this)
+
+        mLocationManager = LocationManager(mContext, this)
+        mLocationManager.startLocationUpdates()
+    }
+
+    override fun onAttach(context: Context) {
+        super.onAttach(context)
+        mContext = context
     }
 
-    @SuppressLint("MissingPermission")
     override fun onMapReady(gMap: GoogleMap) {
-        googleMap = gMap
-        googleMap.isMyLocationEnabled
+        mGoogleMap = gMap
+        mGoogleMap.isMyLocationEnabled = true //enables location button (blue)
+        mGoogleMap.uiSettings.isCompassEnabled = false
+        mGoogleMap.uiSettings.isRotateGesturesEnabled = false
+        mGoogleMap.uiSettings.isTiltGesturesEnabled = false
 
-        // test
+         //test
         mapViewModel.getMarkedPlaces().observe(this, Observer {
             it.forEach {
                     place ->
                 Log.d("MapViewFragment","${place.name}")
                 mapViewModel.addMarker(place, gMap, view!!.context)
             }
         })
+    }
 
-        // For dropping a marker at a point on the Map
-        val recife = LatLng(-8.055747, -34.871044)
+    override fun onLocationChanged(location: Location) {
+        val currentLocation = LatLng(location.latitude, location.longitude)
 
         // For zooming automatically to the location of the marker
-        val cameraPosition = CameraPosition.Builder().target(recife).zoom(12f).build()
-        googleMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition))
+        val cameraPosition = CameraPosition.Builder()
+            .target(currentLocation)
+            .zoom(Constants.CAMERA_MAPS_ZOOM)
+            .build()
+
+        mGoogleMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition))
     }
 }

app/src/main/java/com/discordtime/gpts/maps/viewmodel/LocationListener.kt

@@ -0,0 +1,8 @@
+package com.discordtime.gpts.maps.viewmodel
+
+import android.location.Location
+
+interface LocationListener {
+
+    fun onLocationChanged(location: Location)
+}

app/src/main/java/com/discordtime/gpts/maps/viewmodel/LocationManager.kt

@@ -0,0 +1,47 @@
+package com.discordtime.gpts.maps.viewmodel
+
+import android.content.Context
+import android.location.Location
+import android.os.Looper
+import com.google.android.gms.location.*
+
+class LocationManager(val mContext: Context, private val locationListener: LocationListener) {
+
+    private val UPDATE_INTERVAL: Long = 2 * 60 * 1000 //2 mins
+    private val FASTEST_INTERVAL: Long = 40 * 1000 //40 segs
+
+    private val mLocationRequest = LocationRequest()
+    private lateinit var mFusedLocationProviderClient: FusedLocationProviderClient
+
+    fun startLocationUpdates() {
+        //updates properties
+        mLocationRequest.priority = LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY
+        mLocationRequest.interval = UPDATE_INTERVAL
+        mLocationRequest.fastestInterval = FASTEST_INTERVAL
+
+        var builder = LocationSettingsRequest.Builder()
+        builder.addLocationRequest(mLocationRequest)
+        var locationSettingsRequest = builder.build()
+
+        //checks if location settings are satisfied
+        var settingsClient = LocationServices.getSettingsClient(mContext)
+        settingsClient.checkLocationSettings(locationSettingsRequest)
+
+        mFusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(mContext)
+        mFusedLocationProviderClient.requestLocationUpdates(mLocationRequest, object : LocationCallback() {
+            override fun onLocationResult(locationResult: LocationResult?) {
+                onLocationChanged()
+            }
+
+        }, Looper.myLooper())
+    }
+
+    private fun onLocationChanged() {
+        //var msg = "location changed: " + location?.latitude + ", " + location?.longitude
+        //Toast.makeText(mContext, msg, Toast.LENGTH_SHORT).show()
+
+        mFusedLocationProviderClient.lastLocation.addOnSuccessListener { location: Location ->
+            locationListener.onLocationChanged(location)
+        }
+    }
+}

app/src/main/java/com/discordtime/gpts/tools/Constants.kt

@@ -10,5 +10,8 @@ object Constants {
     //Value used for location permission
     const val PERMISSION_REQUEST_LOCATION_CODE = 99
 
+    //maps camera default zoom
+    const val CAMERA_MAPS_ZOOM = 18.5f
+
     const val PLACES_COLLECTION = "places"
 }