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public class MainActivity extends AppCompatActivity {

SupportMapFragment supportMapFragment;
    FusedLocationProviderClient client;
    FirebaseDatabase database = FirebaseDatabase.getInstance();
    private JSONArray result;

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

supportMapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.google_map);

client = LocationServices.getFusedLocationProviderClient(this);

//pozwolenie dostepu
        if(ActivityCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED){
            getCurrentLocation();
        }else{
            ActivityCompat.requestPermissions(MainActivity.this,new String[]{Manifest.permission.ACCESS_FINE_LOCATION},44);
        }

getData();

}

private void getCurrentLocation() {
        Task<Location> task = client.getLastLocation();
        task.addOnSuccessListener(new OnSuccessListener<Location>() {
            @Override
            public void onSuccess(final Location location) {
                if(location != null){
                    supportMapFragment.getMapAsync(new OnMapReadyCallback() {
                        @Override
                        public void onMapReady(GoogleMap googleMap) {
                            LatLng latLng = new LatLng(location.getLatitude(),location.getLongitude());

MarkerOptions options = new MarkerOptions().position(latLng).title("Here");
                            googleMap.animateCamera(CameraUpdateFactory.newLatLngZoom(latLng,10));//zoom
                            googleMap.addMarker(options);

}
                    });
                }
            }
        });
    }

@Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if(requestCode == 44){
            if(grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
                getCurrentLocation();
            }
        }
    }

public void getData(){
        String URL = "https://comshare.herokuapp.com/v1/locations/";
        RequestQueue requestQueue= Volley.newRequestQueue(getApplicationContext());
        StringRequest stringRequest = new StringRequest(Request.Method.GET, URL, new Response.Listener<String>() {
            @Override
            public void onResponse(String response) {
                Log.d("JSONResult", response.toString());
                JSONObject j = null;
                try {
                    for (int i = 0; i < result.length(); i++) {
                        JSONObject jsonObject1 = result.getJSONObject(i);
                        String lat_i = jsonObject1.getString("1");
                        String long_i = jsonObject1.getString("2");

//googleMap.addMarker(new MarkerOptions()
                        //      .position(new LatLng(Double.parseDouble(lat_i) , Double.parseDouble(long_i)))
                        //    .title(Double.valueOf(lat_i).toString() + "," + Double.valueOf(long_i).toString())
                        //  .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_ROSE))
                        //);

}

} catch (JSONException e) {
                    e.printStackTrace();
                }
            }

}, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                error.printStackTrace();
                Toast.makeText(MainActivity.this,error.getMessage(),Toast.LENGTH_LONG).show();
            }
        }
        );

int socketTimeout = 10000;
        RetryPolicy policy = new DefaultRetryPolicy(socketTimeout, DefaultRetryPolicy.DEFAULT_MAX_RETRIES, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT);
        stringRequest.setRetryPolicy(policy);
        requestQueue.add(stringRequest);

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