我正在尝试在Android应用中使用Google map API v2显示简单地图。我正在遵循Map API Documentation指示。但我认为onMapReady
并不是出于某种原因。我正在使用google-play-services_lib
版本6587000
。我相信,我的手机有google-play-services_lib
版6587038
。
Google地图正在使用初始控件。有人可以帮我纠正这个错误吗?
public class MapDisplay extends FragmentActivity
implements OnMapReadyCallback {
private GoogleMap mMap;
private Location mCurrentLocation;
private MarkerOptions mMarkerOptions ;
private MapFragment mMapFragment;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.location_map);
/** not needed
mMapFragment = MapFragment.newInstance();
FragmentTransaction fragmentTransaction =
getFragmentManag
er().beginTransaction();
fragmentTransaction.add(R.id.map, mMapFragment);
fragmentTransaction.commit();*/
/**corrected code*/
MapFragment mapFragment = (MapFragment) getFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
}
@Override
public void onMapReady(GoogleMap map) {
toast("Map ready");
Log.d("--***** MAP ","::Map ready");
LatLng sydney = new LatLng(-33.867, 151.206);
map.setMyLocationEnabled(true);
map.moveCamera(CameraUpdateFactory.newLatLngZoom(sydney, 13));
map.addMarker(new MarkerOptions()
.title("Sydney")
.snippet("The most populous city in Australia.")
.position(sydney));
}
private void toast(String text){
Toast toast = Toast.makeText(this, text, Toast.LENGTH_SHORT);
toast.show();
}
}
location_map.xml文件
<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
android:name="com.google.android.gms.maps.MapFragment"
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
答案 0 :(得分:71)
AFAIK onMapReady()
是通过getMapAsync()
上MapFragment
的来电触发的,我看不到你在哪里打电话。
答案 1 :(得分:11)
要致电OnMapReady(GoogleMap map)
,请将以下内容附加到onCreate(...)
方法:
MapFragment mapFragment = (MapFragment)
getFragmentManager().findFragmentById(R.id.map);
然后,添加:
// This calls OnMapReady(..). (Asynchronously)
mapFragment.getMapAsync(MapDisplay.this);
答案 2 :(得分:0)
添加:
mMap = map
onMapReady