[英]BorderLayout, Impossible to set a manual Location - SWING Java
我遇到问题,我实现了BorderLayout JPanel。 而且,如果我尝试在北部移动示例按钮,它将保留在默认位置。 这是我的代码:
public class Window extends JFrame{
Panel pan = new Panel();
JPanel container, north,south, west;
public JButton ip,print,cancel,start,ok;
JTextArea timeStep;
JLabel legend;
double time;
double temperature=0.0;
public static void main(String[] args) {
new Window();
}
public Window()
{
System.out.println("je suis là");
this.setSize(700,400);
this.setLocationRelativeTo(null);
this.setResizable(true);
this.setTitle("Assignment2 - CPU temperature");
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
container = new JPanel(new BorderLayout());
north = new JPanel();
ip = new JButton ("New");
ip.setPreferredSize(new Dimension(100,50));
ip.setLocation(0, 0);
north.add(ip);
print = new JButton ("Print");
north.add(print);
north.add(new JLabel("Time Step (in s): "));
timeStep = new JTextArea("10",1,5);
north.add(timeStep);
start = new JButton("OK");
ListenForButton lForButton = new ListenForButton();
start.addActionListener(lForButton);
north.add(start);
south = new JPanel();
legend = new JLabel("Legends are here");
south.add(legend);
west = new JPanel();
JLabel temp = new JLabel("°C");
west.add(temp);
container.add(north, BorderLayout.NORTH);
container.add(west,BorderLayout.WEST);
container.add(pan, BorderLayout.CENTER);
container.add(south, BorderLayout.SOUTH);
this.setContentPane(container);
this.setVisible(true);
}
例如,通过编写“ ip.setLocation(0,0);”,我希望“新建”按钮位于窗口的左上角。
并且默认情况下它保持在中心。
有任何想法吗 ?
边框布局会布置一个容器,并对其组件进行排列和调整大小以适合五个区域:北,南,东,西和中心。
north = new JPanel();
north.setLayout(new BorderLayout());
ip = new JButton ("New");
ip.setPreferredSize(new Dimension(100,50));
print = new JButton ("Print");
north.add(ip, BorderLayout.WEST);
JPanel centerPanel = new JPanel();
centerPanel.add(print);
centerPanel.add(new JLabel("Time Step (in s): "));
timeStep = new JTextArea("10",1,5);
centerPanel.add(timeStep);
start = new JButton("OK");
centerPanel.add(start);
north.add(centerPanel, BorderLayout.CENTER);
北面板现在由以下两个部分组成:
ip
( JButton
)和centerPanel
( JPanel
)包含其余组件。
您想要做的是使用AbsoluteLayout而不是BorderLayout ,BorderLayout使用Cardinal方向在窗格上设置对象,例如North,East,South,West和Center。 您可能需要查看JavaDoc for BorderLayout。
例如,您需要将north
面板设置为BorderLayout()
north.setLayout(new BorderLayout());
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.