Я пытаюсь искать поблизости такие места, как банки, рестораны, банкоматы внутри рисованной области на картах google в android. Я получаю координаты (широта и долгота) в массиве, но я не могу найти соседние места по этому массиву. Может кто-нибудь мне помочь? Я попытался найти, но не нашел никаких результатов. Отличная помощь будет оценена!
Это мой код области рисования:
public class MainActivity extends FragmentActivity implements OnTouchListener {
private static final String TAG = "polygon";
private GoogleMap mGoogleMap;
private View mMapShelterView;
private GestureDetector mGestureDetector;
private ArrayList<LatLng> mLatlngs = new ArrayList<LatLng>();
private PolylineOptions mPolylineOptions;
private PolygonOptions mPolygonOptions;
// flag to differentiate whether user is touching to draw or not
private boolean mDrawFinished = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mMapShelterView = (View) findViewById(R.id.drawer_view);
mGestureDetector = new GestureDetector(this, new GestureListener());
mMapShelterView.setOnTouchListener(this);
initilizeMap();
//Contains(null);
}
private final class GestureListener extends SimpleOnGestureListener {
@Override
public boolean onDown(MotionEvent e) {
return true;
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
return false;
}
}
/**
* Ontouch event will draw poly line along the touch points
*
*/
@Override
public boolean onTouch(View v, MotionEvent event) {
int X1 = (int) event.getX();
int Y1 = (int) event.getY();
Point point = new Point();
point.x = X1;
point.y = Y1;
LatLng firstGeoPoint = mGoogleMap.getProjection().fromScreenLocation(
point);
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
break;
case MotionEvent.ACTION_MOVE:
if (mDrawFinished) {
X1 = (int) event.getX();
Y1 = (int) event.getY();
point = new Point();
point.x = X1;
point.y = Y1;
LatLng geoPoint = mGoogleMap.getProjection()
.fromScreenLocation(point);
mLatlngs.add(geoPoint);
mPolylineOptions = new PolylineOptions();
mPolylineOptions.color(Color.RED);
mPolylineOptions.width(3);
mPolylineOptions.addAll(mLatlngs);
mGoogleMap.addPolyline(mPolylineOptions);
**Log.d(TAG, "Latitude and longitude: " + mLatlngs);**
}
break;
case MotionEvent.ACTION_UP:
Log.d(TAG, "Poinnts array size " + mLatlngs.size());
mLatlngs.add(firstGeoPoint);
mGoogleMap.clear();
mPolylineOptions = null;
mMapShelterView.setVisibility(View.GONE);
mGoogleMap.getUiSettings().setZoomGesturesEnabled(true);
mGoogleMap.getUiSettings().setAllGesturesEnabled(true);
mPolygonOptions = new PolygonOptions();
mPolygonOptions.fillColor(0x5500ff00);
// mPolygonOptions.fillColor(Color.LTGRAY);
mPolygonOptions.strokeColor(Color.RED);
mPolygonOptions.strokeWidth(5);
mPolygonOptions.addAll(mLatlngs);
mGoogleMap.addPolygon(mPolygonOptions);
mDrawFinished = false;
break;
}
return mGestureDetector.onTouchEvent(event);
}
/**
* Setting up map
*
*/
private void initilizeMap() {
int status = GooglePlayServicesUtil
.isGooglePlayServicesAvailable(getApplicationContext());
if (status == ConnectionResult.SUCCESS) {
if (mGoogleMap == null) {
mGoogleMap = ((SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map)).getMap();
mGoogleMap.setMyLocationEnabled(true);
}
} else if (GooglePlayServicesUtil.isUserRecoverableError(status)) {
// showErrorDialog(status);
} else {
Toast.makeText(this, "No Support for Google Play Service",
Toast.LENGTH_LONG).show();
}
}
/**
* Method gets called on tap of draw button, It prepares the screen to draw
* the polygon
*
* @param view
*/
public void drawZone(View view) {
mGoogleMap.clear();
mLatlngs.clear();
mPolylineOptions = null;
mPolygonOptions = null;
mDrawFinished = true;
mMapShelterView.setVisibility(View.VISIBLE);
mGoogleMap.getUiSettings().setScrollGesturesEnabled(false);
}
public synchronized boolean Contains(Location location) {
boolean isInside = false;
if (mLatlngs.size() > 0) {
LatLng lastPoint = mLatlngs.get(mLatlngs.size() - 1);
double x = location.getLongitude();
for (LatLng point : mLatlngs) {
double x1 = lastPoint.longitude;
double x2 = point.longitude;
double dx = x2 - x1;
if (Math.abs(dx) > 180.0) {
if (x > 0) {
while (x1 < 0)
x1 += 360;
while (x2 < 0)
x2 += 360;
} else {
while (x1 > 0)
x1 -= 360;
while (x2 > 0)
x2 -= 360;
}
dx = x2 - x1;
}
if ((x1 <= x && x2 > x) || (x1 >= x && x2 < x)) {
double grad = (point.latitude - lastPoint.latitude) / dx;
double intersectAtLat = lastPoint.latitude
+ ((x - x1) * grad);
if (intersectAtLat > location.getLatitude())
isInside = !isInside;
}
lastPoint = point;
}
}
return isInside;
}
Я получил массив на mLatlang, теперь я хочу рядом с местами в соответствии с этими координатами не по моему текущему местоположению
