如何在parsequery中執行AND

Question

以下是我嘗試基於3個參數進行查詢的代碼。但是下面的查詢適用於OR邏輯函數。有沒有人有任何線索如何與邏輯功能。我試圖按照文檔中的說明正常列出它們，但它總是返回一個空列表。

public class ResterauntList1 extends Activity { 
    String rValue, cValue, lValue; 
    ArrayAdapter<String> adapter; 
    ProgressDialog mProgressDialog; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_resteraunt_list1); 
     rValue = getIntent().getStringExtra("restrauntName"); 
     cValue = getIntent().getStringExtra("restrauntCuisine"); 
     lValue = getIntent().getStringExtra("restrauntLocation"); 
     populateList(rValue, cValue, lValue); 
    } 

    private void populateList(final String rValue, final String cValue, 
      final String lValue) { 

     ParseQueryAdapter.QueryFactory<ParseObject> factory = new ParseQueryAdapter.QueryFactory<ParseObject>() { 

      @Override 
      @SuppressWarnings({ "unchecked", "rawtypes" }) 
      public ParseQuery create() { 
     ParseQuery<ParseObject> query = new ParseQuery("resdb"); 
     query.whereEqualTo("name", rValue); 
     query.whereEqualTo("cuisine", cValue); 
     query.whereEqualTo("area", lValue); 
       return query; 
      } 
     }; 
     ParseQueryAdapter<ParseObject> adapter = new ParseQueryAdapter<ParseObject>(
       this, factory); 
     adapter.setTextKey("name"); 
     adapter.addOnQueryLoadListener(new OnQueryLoadListener<ParseObject>() { 

      @Override 
      public void onLoading() { 
       mProgressDialog = new ProgressDialog(ResterauntList1.this); 
       mProgressDialog 
         .setTitle("Searching for Restaurants matching your search"); 
       mProgressDialog.setMessage("Loading..."); 
       mProgressDialog.setIndeterminate(false); 
       mProgressDialog.show(); 
      } 

      @Override 
      public void onLoaded(List<ParseObject> objects, Exception e) { 
       mProgressDialog.dismiss(); 
      } 
     }); 

     final ListView listView = (ListView) findViewById(R.id.restListView1); 
     listView.setAdapter(adapter); 
     listView.setOnItemClickListener(new OnItemClickListener() { 
      @Override 
      public void onItemClick(AdapterView<?> parent, View view, 
        int position, long id) { 
       ParseObject object = (ParseObject) listView 
         .getItemAtPosition(position); 
       String Id = object.getObjectId(); 
       Intent i = new Intent(getApplicationContext(), 
         SingleRestraunt.class); 
       i.putExtra("restId", Id); 
       startActivity(i); 

      } 
     }); 
    } 

不返回任何錯誤，但它總是返回一個空的列表視圖。有什麼建議麼？就像額外的OR類型查詢一樣。

Answer 1

這應該是一個簡單的修復。

ParseQuery<ParseObject> query = new ParseQuery("resdb"); 
      query.whereEqualTo("name", rValue); 
      query.whereEqualTo("cuisine", cValue); 
      query.whereEqualTo("area", lValue); 

這會給你和功能。

希望這會有所幫助！