#3 : Added Location Button and current Location Services

app/src/main/AndroidManifest.xml

@@ -8,7 +8,6 @@
          location permissions for the 'MyLocation' functionality. 
     -->
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
-
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"

app/src/main/java/com/pulkit4tech/privy/MainActivity.java

@@ -9,6 +9,7 @@
 public class MainActivity extends AppCompatActivity {
 
     private PrivyMapsActivity mapFragement;
+    public static final String DEBUG = "DEBUGGER";
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -21,4 +22,10 @@ protected void onCreate(Bundle savedInstanceState) {
             startActivity(intent);
         }
     }
+
+    @Override
+    protected void onStop() {
+        super.onStop();
+        this.finish();
+    }
 }

app/src/main/java/com/pulkit4tech/privy/PrivyMapsActivity.java

@@ -1,24 +1,45 @@
 package com.pulkit4tech.privy;
 
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.location.Criteria;
+import android.location.Location;
+import android.location.LocationManager;
 import android.os.Bundle;
+import android.support.v4.app.ActivityCompat;
 import android.support.v7.app.ActionBarActivity;
+import android.util.Log;
+import android.widget.Toast;
 
 import com.google.android.gms.maps.CameraUpdateFactory;
 import com.google.android.gms.maps.GoogleMap;
 import com.google.android.gms.maps.OnMapReadyCallback;
 import com.google.android.gms.maps.SupportMapFragment;
 import com.google.android.gms.maps.model.BitmapDescriptorFactory;
 import com.google.android.gms.maps.model.LatLng;
+import com.google.android.gms.maps.model.Marker;
 import com.google.android.gms.maps.model.MarkerOptions;
+import com.pulkit4tech.privy.Utilities.LocationServices;
+import com.pulkit4tech.privy.data.LocationData;
+
+import static com.pulkit4tech.privy.MainActivity.DEBUG;
 
 public class PrivyMapsActivity extends ActionBarActivity implements OnMapReadyCallback {
 
     private GoogleMap mMap;
+    private Context mContext;
+    private Marker myLocationMarker;
+
+    // My Location
+    private LocationData myLocationData;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_privy_maps);
+
+        mContext = this;
+
         // Obtain the SupportMapFragment and get notified when the map is ready to be used.
         SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                 .findFragmentById(R.id.privyMapActivity);
@@ -38,13 +59,68 @@ protected void onCreate(Bundle savedInstanceState) {
     @Override
     public void onMapReady(GoogleMap googleMap) {
         mMap = googleMap;
+        setUpMapInfo();
+        addMarkers();
+    }
+
+
+    private void addMarkers() {
 
         // Add a test marker in Delhi and move the camera
         LatLng delhi = new LatLng(28.633011, 77.219373);
-        mMap.addMarker(new MarkerOptions().position(delhi).anchor(.5f,.5f).title("Marker in Home"));
-        mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(delhi,10.0f));
+        mMap.addMarker(new MarkerOptions().position(delhi).anchor(.5f, .5f).title("Marker in Home"));
+        mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(delhi, 15.0f));
 
         LatLng delhi2 = new LatLng(28.633511, 77.219444);
-        mMap.addMarker(new MarkerOptions().position(delhi2).anchor(.5f,.5f).title("Test Marker in Home2").icon(BitmapDescriptorFactory.fromResource(R.mipmap.ic_launcher)));
+        mMap.addMarker(new MarkerOptions().position(delhi2).anchor(.5f, .5f).title("Test Marker in Home2").icon(BitmapDescriptorFactory.fromResource(R.mipmap.ic_launcher)));
+
+    }
+
+    private void setUpMapInfo() {
+
+        if(!checkLocationEnabledPermission())
+            return;
+
+
+        getMyCurrentLocation();
+
+    }
+
+    private void getMyCurrentLocation(){
+        mMap.setOnMyLocationButtonClickListener(new GoogleMap.OnMyLocationButtonClickListener() {
+            @Override
+            public boolean onMyLocationButtonClick() {
+                LocationServices locationService = new LocationServices(mContext);
+                myLocationData = locationService.getCurrentLocation();
+                if(myLocationData!=null) {
+
+                    // checking for previous marker and if present, replacing it with new marker
+                    if(myLocationMarker!=null){
+                        myLocationMarker.remove();
+                    }
+
+                    myLocationMarker = mMap.addMarker(new MarkerOptions().position(myLocationData.getLatLng()).title("My Location"));
+                    mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(myLocationData.getLatLng(), 15.0f));
+                    Log.d(DEBUG, myLocationData.getLatLng().toString());
+                }
+                return true;
+            }
+        });
+    }
+
+    private boolean checkLocationEnabledPermission() {
+        if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
+            // TODO: Consider calling
+            //    ActivityCompat#requestPermissions
+            // here to request the missing permissions, and then overriding
+            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
+            //                                          int[] grantResults)
+            // to handle the case where the user grants the permission. See the documentation
+            // for ActivityCompat#requestPermissions for more details.
+
+            return false;
+        }
+        mMap.setMyLocationEnabled(true);
+        return true;
     }
 }

app/src/main/java/com/pulkit4tech/privy/Utilities/LocationServices.java

@@ -0,0 +1,88 @@
+package com.pulkit4tech.privy.Utilities;
+
+import android.Manifest;
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.location.Criteria;
+import android.location.Location;
+import android.location.LocationManager;
+import android.location.LocationListener;
+import android.os.Bundle;
+import android.support.v4.app.ActivityCompat;
+import android.util.Log;
+import android.widget.Toast;
+
+
+import com.google.android.gms.maps.model.LatLng;
+
+import com.pulkit4tech.privy.data.LocationData;
+
+import static android.content.Context.LOCATION_SERVICE;
+import static com.pulkit4tech.privy.MainActivity.DEBUG;
+
+/**
+ * Created by pulkit on 01/01/17.
+ */
+
+public class LocationServices implements LocationListener {
+
+    private Context mContext;
+    private LocationData myLocation;
+
+    public LocationServices(Context context) {
+        mContext = context;
+    }
+
+    public LocationData getCurrentLocation() {
+        LocationManager locationManager = (LocationManager) mContext.getSystemService(LOCATION_SERVICE);
+        Criteria criteria = new Criteria();
+        criteria.setAccuracy(Criteria.ACCURACY_COARSE);
+        criteria.setAltitudeRequired(false);
+        criteria.setBearingRequired(false);
+        criteria.setCostAllowed(true);
+        criteria.setPowerRequirement(Criteria.POWER_MEDIUM);
+        String bestProvider = locationManager.getBestProvider(criteria, true);
+        if (ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
+            // TODO: Consider calling
+            //    ActivityCompat#requestPermissions
+            // here to request the missing permissions, and then overriding
+            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
+            //                                          int[] grantResults)
+            // to handle the case where the user grants the permission. See the documentation
+            // for ActivityCompat#requestPermissions for more details.
+            return myLocation;
+        }
+        Location location = locationManager.getLastKnownLocation(bestProvider);
+        locationManager.requestLocationUpdates(bestProvider, 1000, 0, this);
+        if (location != null) {
+            onLocationChanged(location);
+        }
+        return myLocation;
+    }
+
+
+    @Override
+    public void onLocationChanged(Location location) {
+
+        double latitude = location.getLatitude();
+        double longitude = location.getLongitude();
+        LatLng latLng = new LatLng(latitude, longitude);
+        myLocation = new LocationData();
+        myLocation.setLatLng(latLng);
+    }
+
+    @Override
+    public void onStatusChanged(String s, int i, Bundle bundle) {
+
+    }
+
+    @Override
+    public void onProviderEnabled(String s) {
+
+    }
+
+    @Override
+    public void onProviderDisabled(String s) {
+        Toast.makeText(mContext,"Provider Disabled",Toast.LENGTH_SHORT).show();
+    }
+}

app/src/main/java/com/pulkit4tech/privy/data/LocationData.java

@@ -0,0 +1,28 @@
+package com.pulkit4tech.privy.data;
+
+import com.google.android.gms.maps.model.LatLng;
+
+/**
+ * Created by pulkit on 01/01/17.
+ */
+
+public class LocationData {
+    private LatLng latLng;
+    private String Description;
+
+    public LatLng getLatLng() {
+        return latLng;
+    }
+
+    public void setLatLng(LatLng latLng) {
+        this.latLng = latLng;
+    }
+
+    public String getDescription() {
+        return Description;
+    }
+
+    public void setDescription(String description) {
+        Description = description;
+    }
+}