如何使图标活在我的AWT按钮()?点击图标就消失了

Question

如何保持图标始终活跃，点击它不重新加载。

public static class SoftButton extends Button 
{
    private Image image;
    public SoftButton() 
    {            
        setLabel("test");
        setBackground(Color.red);
    }
    public void paint(Graphics g) 
    {  
        super.paint(g);
        image = Toolkit.getDefaultToolkit().getImage("/tmp/world.gif");
        g.drawImage(image, 0, 0, this);
    }
} 

Answer 1

创建一个本地变量来存储图标。就像你差点那样:

public static class SoftButton extends Button 
{
    private Image image;
    public SoftButton() 
    {            
        setLabel("test");
        setBackground(Color.red);
        // Load the icon once in the constructor:
        image = Toolkit.getDefaultToolkit().getImage("/tmp/world.gif");
    }
    public void paint(Graphics g) 
    {  
        super.paint(g);
        g.drawImage(image, 0, 0, this);
    }
}