Question

JButton btnAddMarker = new JButton("AddMarker");
btnAddMarker.setFont(new Font("Tahoma", Font.BOLD, 9));
btnAddMarker.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent arg0) {
         map.addMouseListener(new MouseAdapter() {
             @Override
                public void mouseClicked(MouseEvent e) {

                java.awt.Point screenPoint = e.getPoint();
                com.esri.core.geometry.Point mapPoint = map.toMapPoint(screenPoint.x, screenPoint.y);
                SimpleMarkerSymbol simpleMarker = new SimpleMarkerSymbol(Color.BLUE, 10, Style.CIRCLE);
                Point pointGeometry = new Point(mapPoint.getX(),mapPoint.getY());
                Graphic pointGraphic = new Graphic(pointGeometry, simpleMarker);
                myGraphicsLayer.addGraphic(pointGraphic);


             }
         });
    }
});
btnAddMarker.setBounds(781, 56, 93, 23);
contentPane.add(btnAddMarker);


JButton btnAddgreen = new JButton("AddGreen");
btnAddgreen.setFont(new Font("Tahoma", Font.BOLD, 9));
btnAddgreen.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent arg0) {
         map.addMouseListener(new MouseAdapter() {
             @Override
                public void mouseClicked(MouseEvent e) {

                    java.awt.Point screenPoint = e.getPoint();
                    com.esri.core.geometry.Point mapPoint = map.toMapPoint(screenPoint.x, screenPoint.y);
                    Point pointGeometry = new Point(mapPoint.getX(),mapPoint.getY());
                    Graphic pointGraphic = new Graphic(pointGeometry, symPoint);
                    myGraphicsLayer.addGraphic(pointGraphic);


             }
         });
    }
});
btnAddgreen.setBounds(781, 90, 89, 23);
contentPane.add(btnAddgreen);

我尝试添加一个蓝色标记，然后添加一个绿色标记，但是当我使用绿色标记时，前一个鼠标事件中的前一个蓝色标记仍处于活动状态，并且我在同一点有2个点蓝色和绿色。

Answer 1

如果您要删除以前的图片，请尝试调用

myGraphicsLayer.removeAll()

前

myGrapicsLayer.addGraphic(...)

对于不同的mouseClicked（MouseEvent e），覆盖不会改变。为什么？

1 个答案: