我在GUI应用程序中调整某些JPanel的大小时出现此问题。该应用程序有一个主JLayeredPane,其中包含2个其他JPanel。在JPanel 1中,我有一个登录表单和一个按钮。当我按下按钮时,我想让第一个JPanel不可见,第二个JPanel可见(此面板比第一个更大),但仍保持相同的大小。贝娄是一些相关的代码。任何人都可以帮助我吗?
int width=300, height=300;
JLayeredPane mainPanel;
JPanel panel1;
JPanel panel2;
panel1.setBounds(0,0,width,height);
panel1.setBackground(new Color(251, 249, 236));
mainPanel.add(panel1, JLayeredPane.DEFAULT_LAYER);
panel2.setBounds(0, 0, width+200, height+200);
panel2.setBackground(new Color(255, 0, 0));
mainPanel.add(panel2, JLayeredPane.DEFAULT_LAYER);
点击按钮代码:
setSize(width+200, height+200);
panel1.setVisible(false);
panel2.setVisible(true);
mainPanel.setSize(width+200, height+200);
mainPanel.validate();
mainPanel.repaint();
以下是JLayredPane的一些代码:
GroupLayout mainLayout=new GroupLayout(getContentPane());
getContentPane().setLayout(mainLayout);
mainLayout.setHorizontalGroup(mainLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addGroup(mainLayout.createSequentialGroup()
.addComponent(mainPanel, GroupLayout.PREFERRED_SIZE, width, GroupLayout.PREFERRED_SIZE))
);
mainLayout.setVerticalGroup(mainLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addGroup(mainLayout.createSequentialGroup()
.addComponent(mainPanel, GroupLayout.PREFERRED_SIZE, height, GroupLayout.PREFERRED_SIZE))
);
LE
按钮:
setSize(width+200, height+200);
mainPanel.setSize(width+200, height+200);
mainPanel.remove(panel1);
mainPanel.remove(panel2);
mainPanel.add(panel2, JLayeredPane.DEFAULT_LAYER);
actualizare();
mainPanel.validate();
mainPanel.repaint();
validate();
repaint();
功能:
void actualizare(){
GroupLayout mainLayout=new GroupLayout(getContentPane());
getContentPane().setLayout(mainLayout);
mainLayout.setHorizontalGroup(mainLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addGroup(mainLayout.createSequentialGroup()
.addComponent(mainPanel, GroupLayout.PREFERRED_SIZE, width+200, GroupLayout.PREFERRED_SIZE))
);
mainLayout.setVerticalGroup(mainLayout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addGroup(mainLayout.createSequentialGroup()
.addComponent(mainPanel, GroupLayout.PREFERRED_SIZE, height+200, GroupLayout.PREFERRED_SIZE))
);
}