多边形未闭合

Question

求助，我正在尝试绘制一个多边形，我的多边形没有闭合而且我的坐标是正确的。最后一点不与其他点连接形成多边形。我不确定我做错了什么。谢谢

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;

import android.view.Gravity;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.ZoomButton;

import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import android.app.AppOpsManager;


 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.google.android.gms.appindexing.Action;
 import com.google.android.gms.appindexing.AppIndex;
 import com.google.android.gms.common.api.GoogleApiClient;
 import com.google.android.gms.maps.model.Polygon;
 import com.google.android.gms.maps.model.PolygonOptions;
 import com.google.android.gms.maps.model.Polyline;
 import com.google.android.gms.maps.model.PolylineOptions;

  import java.util.Map;


 public class MapsActivity extends FragmentActivity implements   OnMapReadyCallback {

private GoogleMap mMap;


@Override
protected void onCreate(Bundle savedinstancestate) {
    super.onCreate(savedinstancestate);
    setContentView(R.layout.activity_maps);

    final Button button1 = (Button) findViewById(R.id.buttonMaps);
    final Button button2 = (Button) findViewById(R.id.buttonMaps2);
    final Button button3 = (Button) findViewById(R.id.buttonMaps3);
    final Button button4 = (Button) findViewById(R.id.buttonMaps4);
    final Button button5 = (Button) findViewById(R.id.buttonMaps5);
    final Button button6 = (Button) findViewById(R.id.buttonMaps6);
    final Button button7 = (Button) findViewById(R.id.buttonMaps7);
    final Button button8 = (Button) findViewById(R.id.buttonMaps8);
    final Button button9 = (Button) findViewById(R.id.buttonMaps9);
    final Button button10 = (Button) findViewById(R.id.buttonMaps10);


    button2.setVisibility(View.INVISIBLE);
    button3.setVisibility(View.INVISIBLE);
    button4.setVisibility(View.INVISIBLE);
    button5.setVisibility(View.INVISIBLE);
    button6.setVisibility(View.INVISIBLE);
    button7.setVisibility(View.INVISIBLE);
    button8.setVisibility(View.INVISIBLE);
    button9.setVisibility(View.INVISIBLE);
    button10.setVisibility(View.INVISIBLE);


    button1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {


            mMap.clear();
            if (button1.isShown()) {

                Polygon polygon = mMap.addPolygon(new PolygonOptions()
                        .add(new LatLng(6.519,3.368),new LatLng(6.520,3.376), new LatLng(6.522, 3.378), new LatLng(6.523,3.382), new LatLng(6.524,3.390), new LatLng(6.524, 3.999),new LatLng(6.523, 3.406),new LatLng(6.520, 3.404),new LatLng(6.518, 3.406),new LatLng(6.516, 3.407),new LatLng(6.511, 3.409), new LatLng(6.509, 3.410),new LatLng(6.504, 3.410), new LatLng(6.501, 3.407), new LatLng(6.497, 3.402),new LatLng(6.494, 3.399),new LatLng(6.492, 3.397),new LatLng(6.487, 3.397),new LatLng(6.484, 3.398),new LatLng(6.481, 3.396),new LatLng(6.477, 3.395),new LatLng(6.475, 3.395),new LatLng(6.472, 3.395),new LatLng(6.468, 3.394),new LatLng(6.467, 3.387),new LatLng(6.463, 3.381),new LatLng(6.467, 3.379),new LatLng(6.468, 3.377),new LatLng(6.469, 3.374),new LatLng(6.468, 3.370),new LatLng(6.467, 3.365),new LatLng(6.472, 3.364),new LatLng(6.475, 3.365),new LatLng(6.478, 3.366),new LatLng(6.479, 3.367),new LatLng(6.481, 3.369),new LatLng(6.481, 3.372),new LatLng(6.481, 3.376),new LatLng(6.480, 3.381),new LatLng(6.482, 3.384),new LatLng(6.519,3.368))
                        .strokeColor(Color.BLUE)
                        .geodesic(true));

                mMap.addMarker(new MarkerOptions().position(new LatLng(6.5084, 3.3842)).title("Lagos Mainland").snippet("My Location").icon(BitmapDescriptorFactory.fromResource(R.mipmap.ic_launcher)));
                button2.setVisibility(View.VISIBLE);
                button3.setVisibility(View.VISIBLE);
                button4.setVisibility(View.VISIBLE);
                button5.setVisibility(View.VISIBLE);
                button6.setVisibility(View.VISIBLE);
                button7.setVisibility(View.VISIBLE);
                button8.setVisibility(View.VISIBLE);
                button9.setVisibility(View.VISIBLE);
                button10.setVisibility(View.VISIBLE);



            }
        }

    });

Answer 1

多边形绘制正确。问题出在 new LatLng(6.524, 3.999) 点。如果您为每个 LatLng 添加标记，您就可以观看它。

尝试一下，希望对您有所帮助。

mMap.addMarker(new MarkerOptions().position(new LatLng(6.524, 3.999)).title("E"));

mMap.addMarker(new MarkerOptions().position(new LatLng(6.519,3.368) ).title("P01"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.520,3.376) ).title("P02"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.522, 3.378)).title("P03"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.523,3.382) ).title("P04"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.524,3.390) ).title("P05"));
//Point far
mMap.addMarker(new MarkerOptions().position(new LatLng(6.524, 3.999)).title("P06")); //point far

mMap.addMarker(new MarkerOptions().position(new LatLng(6.523, 3.406)).title("P07"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.520, 3.404)).title("P08"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.518, 3.406)).title("P09"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.516, 3.407)).title("P10"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.511, 3.409)).title("P11"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.509, 3.410)).title("P12"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.504, 3.410)).title("P13"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.501, 3.407)).title("P14"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.497, 3.402)).title("P15"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.494, 3.399)).title("P16"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.492, 3.397)).title("P17"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.487, 3.397)).title("P18"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.484, 3.398)).title("P19"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.481, 3.396)).title("P20"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.477, 3.395)).title("P21"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.475, 3.395)).title("P22"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.472, 3.395)).title("P23"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.468, 3.394)).title("P24"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.467, 3.387)).title("P25"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.463, 3.381)).title("P26"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.467, 3.379)).title("P27"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.468, 3.377)).title("P28"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.469, 3.374)).title("P29"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.468, 3.370)).title("P30"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.467, 3.365)).title("P31"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.472, 3.364)).title("P32"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.475, 3.365)).title("P33"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.478, 3.366)).title("P34"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.479, 3.367)).title("P35"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.481, 3.369)).title("P36"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.481, 3.372)).title("P37"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.481, 3.376)).title("P38"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.480, 3.381)).title("P39"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.482, 3.384)).title("P40"));
mMap.addMarker(new MarkerOptions().position(new LatLng(6.519,3.368) ).title("P41"));

多边形未闭合

Polygon is not closed

java

android

google-maps

polygon