Question

使用产品：imobile 操作系统：win7
数据类型：x64 
问题详细描述：关键代码如下：
private  void QueryArea(String key){

        // TODO Auto-generated method stub
        Layer layer = null;
        String strLayerName = key;
        Log.i("8888877777",strLayerName);
//        String strLayerName = m_spnSelectLayer.getSelectedItem().toString();
        if (strLayerName.equals("")) {
            return;
        }else {
            layer = m_MapControl.getMap().getLayers().get(strLayerName);
            Log.i("8888333","不是空的");
        }

        DatasetVector datasetvector = (DatasetVector)layer.getDataset();
        // 清空选择集
        for (int i = 0; i < m_MapControl.getMap().getLayers().getCount(); i++) {
            Layer ly = m_MapControl.getMap().getLayers().get(i);
            ly.getSelection().clear();
        }

        Rectangle2D bounds = getBounds();
//        System.out.println(bounds.toString());
//        System.out.println(layer.getName());
        Log.i("88885555",bounds.toString());
        Log.i("888885555",layer.getName());

        // 查询，返回查询结果记录集
        Recordset recordset = datasetvector.query(bounds, CursorType.STATIC);
        Log.i("88882222",recordset.getRecordCount()+" 999");
        if (recordset.getRecordCount()<1) {
            Toast.makeText(MainActivity.this, "未搜索到对象" , Toast.LENGTH_SHORT).show();
            m_MapControl.getMap().refresh();
            recordset.dispose();
            return;
        }else{
            Toast.makeText(MainActivity.this, "Count"+recordset.getRecordCount(), Toast.LENGTH_LONG).show();
        }

        layer.getSelection().fromRecordset(recordset);

        // 设置选择集的风格
        GeoStyle style = new GeoStyle();
        style.setLineColor((new com.supermap.data.Color(0,0,222)));
        style.setLineSymbolID(0);
        style.setLineWidth(0.5);
        style.setMarkerSymbolID(351);
        style.setMarkerSize(new com.supermap.data.Size2D(5,5));
        style.setFillForeColor(new com.supermap.data.Color(244,50,50));
        style.setFillOpaqueRate(70);

        layer.getSelection().setStyle(style);

        recordset.moveFirst();
        Geometry geometry = recordset.getGeometry();
        m_MapControl.getMap().setCenter(geometry.getInnerPoint());
        m_MapControl.getMap().refresh();

        // 释放资源
        recordset.dispose();
        geometry.dispose();
        
    }

提示信息:

2020-12-20 00:52:01.062 3642-3642/com.example.supermaptwo I/88888000: 学校_1@yyy
2020-12-20 00:52:01.524 3642-3642/com.example.supermaptwo I/8888877777: 学校_1@yyy
2020-12-20 00:52:01.524 3642-3642/com.example.supermaptwo I/8888333: 不是空的
2020-12-20 00:52:01.527 3642-3642/com.example.supermaptwo I/88885555: Left=103.798979746169,Bottom=30.658870428114835,Right=103.80749666867466,Top=30.667387350620498
2020-12-20 00:52:01.527 3642-3642/com.example.supermaptwo I/888885555: 学校_1@yyy
2020-12-20 00:52:01.529 3642-3642/com.example.supermaptwo I/88882222: 0 999
(学校_1@yyy是工作空间内一个图层的名字)

问题重现步骤： 123

Answer 1

您好，请问一下您查询的数据集什么坐标系呢。和您的bounds是不是属于同一个坐标系？确定一下您的bounds下是否有学校_1@yyy这个数据集的对象存在？