製作一個JPanel並在裏面添加多個JPanels

Question

我需要構建一個類似於這個圖像的屏幕。我有一個主面板，並在該面板中，我需要添加多列2垂直列和3水平。這些列是Jpanels。我試圖使用GridLayout，但我沒有成功。

Answer 1

非常rarly將一個單一的佈局管理器做你想要的一切。你想在你可以/需要的地方開始使用複合佈局管理器。

這個例子既使用GridLayout和GridBagLayout

import java.awt.BorderLayout; 
import java.awt.Color; 
import java.awt.Dimension; 
import java.awt.EventQueue; 
import java.awt.GridBagConstraints; 
import java.awt.GridBagLayout; 
import java.awt.GridLayout; 
import java.awt.Insets; 
import javax.swing.JFrame; 
import javax.swing.JPanel; 
import javax.swing.UIManager; 
import javax.swing.UnsupportedLookAndFeelException; 
import javax.swing.border.EmptyBorder; 

public class BadLayout21 { 

    public static void main(String[] args) { 
     new BadLayout21(); 
    } 

    public BadLayout21() { 
     EventQueue.invokeLater(new Runnable() { 
      @Override 
      public void run() { 
       try { 
        UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); 
       } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) { 
       } 

       JFrame frame = new JFrame("Testing"); 
       frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
       frame.setLayout(new BorderLayout()); 
       frame.add(new TestPane()); 
       frame.pack(); 
       frame.setLocationRelativeTo(null); 
       frame.setVisible(true); 
      } 
     }); 
    } 

    public class TestPane extends JPanel { 

     public TestPane() { 

      setBorder(new EmptyBorder(10, 10, 10, 10)); 

      setLayout(new GridBagLayout()); 

      JPanel leftPane = new JPanel(new GridLayout(2, 0, 0, 4)); 
      leftPane.add(createPane(Color.RED)); 
      leftPane.add(createPane(Color.RED)); 

      JPanel leftMiddlePanel = createPane(Color.BLUE); 
      JPanel rightMiddlePanel = createPane(Color.BLUE); 

      JPanel rightPane = new JPanel(new GridLayout(2, 0, 0, 4)); 
      rightPane.add(createPane(Color.GREEN)); 
      rightPane.add(createPane(Color.GREEN)); 

      GridBagConstraints gbc = new GridBagConstraints(); 
      gbc.gridx = 0; 
      gbc.gridy = 0; 
      gbc.anchor = GridBagConstraints.NORTH; 
      gbc.fill = GridBagConstraints.HORIZONTAL; 
      gbc.weightx = 1; 
      gbc.insets = new Insets(20, 20, 0, 0); 
      add(leftPane, gbc); 

      gbc.gridx = 3; 
      gbc.anchor = GridBagConstraints.NORTH; 
      gbc.insets = new Insets(20, 0, 0, 20); 
      add(rightPane, gbc); 

      gbc.weightx = 0; 
      gbc.gridx = 1; 
      gbc.weighty = 1; 
      gbc.fill = GridBagConstraints.VERTICAL; 
      gbc.anchor = GridBagConstraints.NORTH; 
      gbc.insets = new Insets(0, 0, 0, 10); 
      add(leftMiddlePanel, gbc); 

      gbc.gridx = 2; 
      gbc.insets = new Insets(0, 10, 0, 0); 
      add(rightMiddlePanel, gbc); 

     } 

     protected JPanel createPane(Color color) { 
      JPanel panel = new JPanel(); 
      panel.setPreferredSize(new Dimension(25, 25)); 
      panel.setBackground(color); 
      return panel; 
     } 

     @Override 
     public Dimension getPreferredSize() { 
      return new Dimension(200, 200); 
     } 
    } 
} 

Answer 2

我認爲這將是很難把所有的面板，直接在一個大的面板。可能有多種解決方案。如將主面板分成四個獨立（垂直）面板並將最終面板添加到這四個子面板。或者如怪異的建議，從一個邊界佈局開始，首先創建一個左側子面板，中間子面板和右側子面板，每個面板都有自己的佈局管理器。在這些子面板中，您可以放置​​最終的面板。

儘管確切的目的或目標是對我來說有點模糊，現在，我希望可以用我的suggesten。