单击按钮后更改Frame的内容窗格

I want to be able to set a JFrame's contentpane after a button inside one of that frame's JPanels has been clicked.

我希望能够在单击该框架的一个JPanels中的按钮后设置JFrame的contentpane。

My architecture consists of a controller which creates the JFrame and the first JPanel inside of it. From within the first JPanel I'm calling a method: setcontentpane(JPanel jpanel) on the controller. However, instead of loading the passed JPanel it does nothing but removing all Panels (see code below)

我的架构由一个控制器组成，该控制器创建JFrame和它内部的第一个JPanel。从第一个JPanel中我调用一个方法：setcontentpane（JPanel jpanel）在控制器上。但是，它不是加载传递的JPanel，而是删除所有面板（参见下面的代码）

ActionListener inside of the first JPanel:

第一个JPanel里面的ActionListener：

public void actionPerformed(ActionEvent arg0) {
            controller.setpanel(new CustomPanel(string1, string2));
        }

Controller:

控制器：

JFrame frame;

public void setpanel(JPanel panel)
{
    frame.getContentPane().removeAll();
    frame.getContentPane().add(panel);
    frame.repaint();
}

public Controller(JFrame frame)
{
    this.frame=frame;
}

Can anyone tell me what I'm doing wrong? Thanks :)

谁能告诉我我做错了什么？谢谢：）

3 个解决方案

#1

Call revalidate, then repaint. This tells the layout managers to do their layouts of their components:

调用revalidate，然后重新绘制。这告诉布局管理器执行其组件的布局：

JPanel contentPane = (JPanel) frame.getContentPane();

contentPane.removeAll();
contentPane.add(panel);
contentPane.revalidate(); 
contentPane.repaint();

Better though if you just want to swap JPanels is to use a CardLayout and have it do the dirty work.

更好的是，如果你只是想交换JPanels就是使用CardLayout并让它完成肮脏的工作。

3 个解决方案

#1

更多相关文章

随机推荐