安卓谷歌地图。按地址添加标记

Question

我在 android 应用程序中添加了 map ，并希望通过地址在 map 上添加标记。有可能的？我已经尝试使用 Geocoder 获取 long 和 lat，但出现错误 Service not Available。

我的代码:

Geocoder geocoder = new Geocoder(getBaseContext());
        List<Address> addresses = null;

        try {
            addresses = geocoder.getFromLocationName(event.getPlace(), 20);
            System.out.println(addresses);
//          for (int i = 0; i < addresses.size(); i++) { // MULTIPLE MATCHES
//
//              Address addr = addresses.get(i);
//
//              double latitude = addr.getLatitude();
//              double longitude = addr.getLongitude(); // DO SOMETHING WITH
//                                                      // VALUES
//
//              System.out.println(latitude);
//              System.out.println(longitude);
//
//          }
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

Answer 1

创建一个将地址转换为 LatLng 的方法:

public LatLng getLocationFromAddress(Context context, String strAddress)
{
    Geocoder coder= new Geocoder(context);
    List<Address> address;
    LatLng p1 = null;

    try
    {
        address = coder.getFromLocationName(strAddress, 5);
        if(address==null)
        {
            return null;
        }
        Address location = address.get(0);
        location.getLatitude();
        location.getLongitude();

        p1 = new LatLng(location.getLatitude(), location.getLongitude());
    }
    catch (Exception e)
    {
        e.printStackTrace();
    }
    return p1;

}

然后，

 @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
    mapFragment.getMapAsync(this);      

}


@Override
public void onMapReady(GoogleMap googleMap) {
    mMap = googleMap;
  LatLng address = getLocationFromAddress(this, yourAddressString(eg. "Street Number, Street, Suburb, State, Postcode");
    mMap.addMarker(new MarkerOptions().position(address).title("Marker in Sydney"));
    mMap.moveCamera(CameraUpdateFactory.newLatLng(address));
}