解析Facebook JSON数组

Question

我真的被卡住了。我试图从Facebook查询附近的地方，我实际上得到了json格式的结果。这是我使用的代码。

@Override 

public void getNearbyPlaces(final Session session){ 
     Request request = Request.newPlacesSearchRequest(session, _gpsTracker.getLocation(), 8000, 1, "restaurant", new Request.GraphPlaceListCallback() { 

     @Override 
     public void onCompleted(List<GraphPlace> places, Response response) { 
      ListIterator<GraphPlace> _allplaces = places.listIterator(); 
      while(_allplaces.hasNext()){ 
       String singlePlace = _allplaces.next().toString();   
      } 

      if(response.getError() != null){ 
       Toast.makeText(getActivity(), "Error Occured", Toast.LENGTH_SHORT).show(); 
      } 

     } 
    }); 
    request.executeAsync(); 
} 

，这是结果我得到

GraphObject{graphObjectClass=GraphPlace, state={"id":"196223377081320","category":"Local business","location":{"state":"","zip":"","longitude":32.6246565296,"latitude":0.23724219554666,"country":"Uganda","city":"Kampala","street":""},"category_list":[{"id":"273819889375819","name":"Restaurant"},{"id":"164243073639257","name":"Hotel"}],"name":"Munyonyo Speke Resort"}} 

但是，我没能提取名称，ID和坐标。

Answer 1

您可以使用这样的事情：

@Override 

public void getNearbyPlaces(final Session session){ 

    Request request = Request.newPlacesSearchRequest(session, _gpsTracker.getLocation(), 8000, 1, "restaurant", new Request.GraphPlaceListCallback() { 

     @Override 
     public void onCompleted(List<GraphPlace> places, Response response) { 
      // TODO Auto-generated method stub 
      for (GraphPlace graphPlace : places) { 
       graphPlace.getId(); 
       graphPlace.getName(); 
       graphPlace.getLocation().getLatitude(); 
       graphPlace.getLocation().getLongitude(); 
      } 
      if(response.getError() != null){ 
       Toast.makeText(getActivity(), "Error Occured", Toast.LENGTH_SHORT).show(); 
      } 

     } 
    }); 
    request.executeAsync(); 
}