location

android/GPSMapDemo/app/src/main/java/ee/taltech/mobile2020/gpsmapdemo/MapsActivity.kt

@@ -5,6 +5,7 @@ import android.content.Context
 import android.content.pm.PackageManager
 import android.location.Criteria
 import android.location.Location
+import android.location.LocationListener
 import android.location.LocationManager
 import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
@@ -18,7 +19,7 @@ import com.google.android.gms.maps.SupportMapFragment
 import com.google.android.gms.maps.model.LatLng
 import com.google.android.gms.maps.model.MarkerOptions
 
-class MapsActivity : AppCompatActivity(), OnMapReadyCallback {
+class MapsActivity : AppCompatActivity(), OnMapReadyCallback, LocationListener {
 
     private lateinit var mMap: GoogleMap
 
@@ -29,15 +30,14 @@ class MapsActivity : AppCompatActivity(), OnMapReadyCallback {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_maps)
-        // Obtain the SupportMapFragment and get notified when the map is ready to be used.
-        val mapFragment = supportFragmentManager
-                .findFragmentById(R.id.map) as SupportMapFragment
-        mapFragment.getMapAsync(this)
 
         locationManager = getSystemService(Context.LOCATION_SERVICE) as LocationManager
         var criteria = Criteria()
 
         provider = locationManager.getBestProvider(criteria, true)
+
+        Log.d("Provider", provider);
+
         if (provider != null){
             if (
                     ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
@@ -49,6 +49,12 @@ class MapsActivity : AppCompatActivity(), OnMapReadyCallback {
 
         }
 
+
+        // Obtain the SupportMapFragment and get notified when the map is ready to be used.
+        val mapFragment = supportFragmentManager
+                .findFragmentById(R.id.map) as SupportMapFragment
+        mapFragment.getMapAsync(this)
+
     }
 
     /**
@@ -69,7 +75,48 @@ class MapsActivity : AppCompatActivity(), OnMapReadyCallback {
             markerLatLng = LatLng(location!!.latitude, location!!.longitude)
         }
         mMap.addMarker(MarkerOptions().position(markerLatLng).title("Marker"))
+
+        mMap.moveCamera(CameraUpdateFactory.zoomTo(15f));
+
         mMap.moveCamera(CameraUpdateFactory.newLatLng(markerLatLng))
 
     }
+
+    override fun onResume() {
+        super.onResume()
+        if (locationManager != null && provider != null){
+            if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
+                return
+            }
+            locationManager.requestLocationUpdates(provider, 400, 1f, this)
+        }
+    }
+
+    override fun onPause() {
+        super.onPause()
+        if (locationManager != null && provider != null){
+            if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
+                return
+            }
+            locationManager.removeUpdates( this)
+        }
+    }
+
+    override fun onLocationChanged(location: Location?) {
+        if (mMap == null) return
+        var markerLatLng = LatLng(location!!.latitude, location!!.longitude)
+        mMap.moveCamera(CameraUpdateFactory.newLatLng(markerLatLng))
+    }
+
+    override fun onStatusChanged(provider: String?, status: Int, extras: Bundle?) {
+        TODO("Not yet implemented")
+    }
+
+    override fun onProviderEnabled(provider: String?) {
+        TODO("Not yet implemented")
+    }
+
+    override fun onProviderDisabled(provider: String?) {
+        TODO("Not yet implemented")
+    }
 }
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