安卓谷歌地圖V2完成加載事件或回調

Question

我想在谷歌地圖加載（地圖已填充）之後做些什麼來實現呢？

Answer 1

如qubz所述，ViewTreeObserver可用於在地圖加載完成後實現回調，因此用戶將獲得例如啓動後的正確位置：

@Override 
public void onCreate(Bundle savedInstanceState) { 
    // This is a small hack to enable a onMapLoadingCompleted-functionality to the user. 
    final View mapView = getSupportFragmentManager().findFragmentById(R.id.google_map_fragment).getView(); 
    if (mapView.getViewTreeObserver().isAlive()) { 
     mapView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() { 
      @SuppressWarnings("deprecation") 
      // We use the new method when supported 
      @SuppressLint("NewApi") 
      // We check which build version we are using. 
      @Override 
      public void onGlobalLayout() { 
       if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) { 
        mapView.getViewTreeObserver().removeGlobalOnLayoutListener(this); 
       } else { 
        mapView.getViewTreeObserver().removeOnGlobalLayoutListener(this); 
       } 
       // Send notification that map-loading has completed. 
       onMapFinishedLoading(); 
      } 
     }); 
    } 
} 

protected void onMapFinishedLoading() { 
    // Do whatever you want to do. Map has completed loading at this point. 
    Log.i(TAG, "Map finished loading."); 
    GoogleMap mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.google_map_fragment)) 
        .getMap(); 
    mMap.moveCamera(CameraUpdateFactory.zoomIn()); 
}