如何将关键字转换为Latitude经度Google地图[Android]

implementation 'com.google.android.gms:play-services-maps:17.0.0'

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

<fragment
    android:id="@+id/map_fragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    class="com.google.android.gms.maps.MapFragment" />

import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.os.Bundle;
import android.widget.Toast;

import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.OnMapReadyCallback;

import java.io.IOException;
import java.util.List;

public class MainActivity extends AppCompatActivity implements OnMapReadyCallback {
    private GoogleMap googleMap;
    private Geocoder geocoder;

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

        MapFragment mapFragment = (MapFragment) getFragmentManager().findFragmentById(R.id.map_fragment);
        mapFragment.getMapAsync(this);

        geocoder = new Geocoder(this);
    }

    @Override
    public void onMapReady(GoogleMap map) {
        googleMap = map;
        
        try {
            List<Address> addresses = geocoder.getFromLocationName("关键字", 1);
            if (addresses != null && addresses.size() > 0) {
                Address address = addresses.get(0);
                double latitude = address.getLatitude();
                double longitude = address.getLongitude();
                
                Toast.makeText(this, "纬度：" + latitude + "，经度：" + longitude, Toast.LENGTH_SHORT).show();
                
                // 在地图上添加标记
                googleMap.addMarker(new MarkerOptions()
                        .position(new LatLng(latitude, longitude))
                        .title("位置"));
                
                // 将地图中心移动到标记处
                googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(latitude, longitude), 15));
            } else {
                Toast.makeText(this, "未找到匹配的地址", Toast.LENGTH_SHORT).show();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}