Android Maps Api V2にonFirstFixメソッドのような機能はありますか？

Question

新しい地図APIでmyLocationビューをsetMyLocationEnabledから有効にすることができます。

最初のバージョンのApiには、runOnFirstFixというメソッドがあり、場所が見つかるとそのマップをユーザーの場所にアニメーション表示することができました。私はApiバージョン2のリスナーやそのような場所を見つけることができません。

ユーザーがいったんアクションを実行するソリューションはありますか？

Answer 1

Google Maps Android API V2にはLocationSourceがあります。ドキュメントから：

"GoogleMapオブジェクトには、my-locationレイヤのロケーションプロバイダが組み込まれていますが、このインターフェイスを実装する別のもので置き換えることができます。"私はあなたがLocationSource.OnLocationChangedListener

と一緒にそれを使用する必要があります想像

LocationSource

更新

それを考え出しました。 runOnFirstFixと似たような操作をしたい場合は、ユーザーの場所が利用できるようになるまで待ってから、その場所に中心を置くように地図をアニメーション化する基本的な例を示します。その場所は、画面をオフに行くとき、あなたがユーザの位置にマップを中心に興味があれば（MyLocationOverlayが古いAPIでないように）

public class MyLocationMapFragmentActivity extends FragmentActivity implements LocationListener, LocationSource 
{ 
/** 
* Note that this may be null if the Google Play services APK is not available. 
*/ 
private GoogleMap mMap; 

private OnLocationChangedListener mListener; 
private LocationManager locationManager; 

private Context mContext; 

@Override 
protected void onCreate(Bundle savedInstanceState) 
{ 
    super.onCreate(savedInstanceState); 

    setContentView(R.layout.basic_map); 

    this.mContext = this; 

    locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); 

    //You may want to pass a different provider in as the first arg here 
    //depending on the location accuracy that you desire 
    //see LocationManager.getBestProvider() 
    Criteria locationCriteria = new Criteria(); 
    locationCriteria.setAccuracy(Criteria.ACCURACY_FINE); 
    locationManager.requestLocationUpdates(locationManager.getBestProvider(locationCriteria, true), 1L, 2F, this); 

    setUpMapIfNeeded(); 
} 

@Override 
public void onPause() 
{ 
    if(locationManager != null) 
    { 
     locationManager.removeUpdates(this); 
    } 

    super.onPause(); 
} 

@Override 
public void onResume() 
{ 
    super.onResume(); 

    setUpMapIfNeeded(); 

    if(locationManager != null) 
    { 
     mMap.setMyLocationEnabled(true); 
    } 
} 


/** 
* Sets up the map if it is possible to do so (i.e., the Google Play services APK is correctly 
* installed) and the map has not already been instantiated.. This will ensure that we only ever 
* call {@link #setUpMap()} once when {@link #mMap} is not null. 
* <p> 
* If it isn't installed {@link SupportMapFragment} (and 
* {@link com.google.android.gms.maps.MapView 
* MapView}) will show a prompt for the user to install/update the Google Play services APK on 
* their device. 
* <p> 
* A user can return to this Activity after following the prompt and correctly 
* installing/updating/enabling the Google Play services. Since the Activity may not have been 
* completely destroyed during this process (it is likely that it would only be stopped or 
* paused), {@link #onCreate(Bundle)} may not be called again so we should call this method in 
* {@link #onResume()} to guarantee that it will be called. 
*/ 
private void setUpMapIfNeeded() { 
    // Do a null check to confirm that we have not already instantiated the map. 
    if (mMap == null) 
    { 
     // Try to obtain the map from the SupportMapFragment. 
     mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.basicMap)).getMap(); 
     // Check if we were successful in obtaining the map. 

     //This is how you register the LocationSource 
     mMap.setLocationSource(this); 

     if (mMap != null) 
     { 
      setUpMap(); 
     } 
    } 
} 

/** 
* This is where we can add markers or lines, add listeners or move the camera. In this case, we 
* just add a marker near Africa. 
* <p> 
* This should only be called once and when we are sure that {@link #mMap} is not null. 
*/ 
private void setUpMap() 
{ 
    mMap.setMyLocationEnabled(true); 
} 

@Override 
public void activate(OnLocationChangedListener listener) 
{ 
    mListener = listener; 
} 

@Override 
public void deactivate() 
{ 
    mListener = null; 
} 

@Override 
public void onLocationChanged(Location location) 
{ 
    if(mListener != null) 
    { 
     mListener.onLocationChanged(location); 

     //Move the camera to the user's location once it's available! 
     mMap.animateCamera(CameraUpdateFactory.newLatLng(new LatLng(location.getLatitude(), location.getLongitude()))); 
    } 
} 

@Override 
public void onProviderDisabled(String provider) 
{ 
    // TODO Auto-generated method stub 
    Toast.makeText(this, "provider disabled", Toast.LENGTH_SHORT).show(); 
} 

@Override 
public void onProviderEnabled(String provider) 
{ 
    // TODO Auto-generated method stub 
    Toast.makeText(this, "provider enabled", Toast.LENGTH_SHORT).show(); 
} 

@Override 
public void onStatusChanged(String provider, int status, Bundle extras) 
{ 
    // TODO Auto-generated method stub 
    Toast.makeText(this, "status changed", Toast.LENGTH_SHORT).show(); 
} 
} 

アップデート2

、参照this answer

またはこのブログの投稿：Google Maps Android API V2 MyLocation LocationSource and event handling