如何在谷歌地图上显示经纬度

Question

我将经度和纬度数据从一个活动传递到另一个活动，并且它是成功的，但是我如何在收到此数据后将其作为位置显示在谷歌地图上，这样用户将在谷歌 map 中看到位置，看不到数量经度和纬度。

注意我通过使用getExtra()和putExtra()传递数据

如果有人知道解决方案，请帮助我

button2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                Intent intent = new Intent(Main3Activity.this, MapsActivity.class);

               intent.putExtra("Latitude", Latitude);
               intent.putExtra("Longitude", Longitude);
                startActivity(intent);
            }
        });

public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {

    private GoogleMap mMap;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_maps);
        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);
    Intent i = getIntent();
        final String Latitude=i.getStringExtra("Latitude");
        final String Longitude=i.getStringExtra("Longitude");
    }

    @Override
    public void onMapReady(GoogleMap googleMap) {
        mMap = googleMap;

        LatLng sydney = new LatLng(-34, 151);
        mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
        mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
    }
}

Answer 1

改变

final Double Latitude=i.getStringExtra("Latitude");
        final Double Longitude=i.getStringExtra("Longitude");

至

final String Latitude=i.getDoubleExtra("Latitude");
        final String Longitude=i.getDoubleExtra("Longitude");

更改LatLng sydney = new LatLng(-34, 151); 到LatLng sydney = new LatLng(Latitude, Longitude);

试试这个代码：

public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {

    private GoogleMap mMap;
Double Latitude=0.0;
    Double Longitude=0.0;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_maps);
        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
            .findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);
        Intent i = getIntent();
        Latitude=i.getDoubleExtra("Latitude",0.0);
    Longitude=i.getDoubleExtra("Longitude",0.0);
    }

    @Override
    public void onMapReady(GoogleMap googleMap) {
        mMap = googleMap;

        LatLng sydney = new LatLng(Latitude, Longitude);
        mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
        mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
    }
}