我在netbeans的GUI设计器中设计了一个GV框架，它有1个textArea、2个textBoxes和1个jButtons，它们位于框架内的右侧。现在我想在这些组件左侧的 GV 框架中添加一个自定义 JPanel。像这样:http://s25.postimg.org/3lggsdusf/Othe.png
主网格面板(直接在类内部构建
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
import javafx.scene.shape.Circle;
import javax.swing.JPanel;
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
public class GV extends javax.swing.JFrame {
boolean drawCircle = false;
Circle circle;
class Circle {
Color c_color;
int x, y, r;
public Circle(int x, int y, int r, Color c_color) {
this.x = x;
this.y = y;
this.r = r;
this.c_color = c_color;
}
}
JPanel myGrid = new JPanel(){
public void paintComponent(Graphics g) {
System.out.println("paint method called");
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
if(!drawCircle){
g2.setPaint(Color.GRAY);
height = getSize().height;
width = getSize().width;
radius = (int) (Math.sqrt(height * width / 64) / 2);
for (int i = 1; i < 8; i++) {
int x = i * (height / 8);
g2.drawLine(x, 0, x, height);
}
for (int i = 1; i < 8; i++) {
int y = i * (width / 8);
g2.drawLine(0, y, width, y);
}
}else{
g2.setColor(circle.c_color);
g2.fillOval(circle.x,circle.y,circle.r,circle.r);
System.err.println("Drawn @"+circle.c_color.toString()+"@"+circle.x+","+circle.y);
drawCircle=false;
}
}
@Override
public Dimension getPreferredSize() {
return new Dimension(480, 480);
}
};
Game game;
DiceType[][] board;
int height, width, radius;
//List<Rectangle> Cells;
/**
* Creates new form GV
*/
public void drawDices(){
board = game.board.boardGrid;
for(int i=0;i<8;i++){
for(int j=0;j<8;j++){
if(board[i][j]!=DiceType.noDice){
drawDice(i+1, j+1, board[i][j]);
}
}
}
}
public void drawDice(int i, int j, DiceType dType){
int x = (2*i-1)*(width/8)/2, y = (2*j-1)*(height/8)/2;;
if(dType==DiceType.blackDice){
circle = new Circle(x, y, radius, Color.BLACK);
}else{
circle = new Circle(x, y, radius, Color.WHITE);
}
drawCircle=true;
myGrid.revalidate();
myGrid.repaint();
}
public void updateMovePanel(Player player){
String moveStr="";
for(Move move : player.Moves){
moveStr+="["+move.xIndex+", "+move.yIndex+"]\n";
}
validMoveTextArea.setText(moveStr);
}
public GV() {
//myGrid = new GridPanel();
initComponents();
//this.pack();
game = new Game();
drawDices();
game.blackPlayer.findValidMoves();
updateMovePanel(game.blackPlayer);
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
xIndexField = new javax.swing.JTextField();
yIndexField = new javax.swing.JTextField();
chooseInputasMoveButton = new javax.swing.JButton();
legalMoves = new javax.swing.JLabel();
jScrollPane1 = new javax.swing.JScrollPane();
validMoveTextArea = new javax.swing.JTextArea();
setLayout(new BorderLayout());
//myGrid.setLayout(new BoxLayout(container, BoxLayout.X_AXIS));
this.add(myGrid, BorderLayout.CENTER);
xIndexLabel = new javax.swing.JLabel();
yIndexLabel = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
xIndexField.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
xIndexFieldActionPerformed(evt);
}
});
chooseInputasMoveButton.setText("Choose Move");
chooseInputasMoveButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
chooseInputasMoveButtonActionPerformed(evt);
}
});
legalMoves.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
legalMoves.setText("Possible Moves");
validMoveTextArea.setEditable(false);
validMoveTextArea.setColumns(20);
validMoveTextArea.setRows(5);
validMoveTextArea.setEnabled(false);
jScrollPane1.setViewportView(validMoveTextArea);
xIndexLabel.setText("X(a-h):");
yIndexLabel.setText("Y(1-8):");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(416, 416, 416)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(0, 0, Short.MAX_VALUE)
.addComponent(xIndexLabel)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(xIndexField, javax.swing.GroupLayout.PREFERRED_SIZE, 43, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(yIndexLabel)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(yIndexField, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(jScrollPane1)
.addComponent(legalMoves, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(chooseInputasMoveButton, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(legalMoves, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 340, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(yIndexField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(xIndexField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(xIndexLabel)
.addComponent(yIndexLabel))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(chooseInputasMoveButton)
.addContainerGap())
);
pack();
}// </editor-fold>
private void chooseInputasMoveButtonActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
game.takeMove(Integer.getInteger(xIndexField.getText()), Integer.getInteger(yIndexField.getText()), game.blackPlayer);
}
private void xIndexFieldActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(GV.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(GV.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(GV.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(GV.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new GV().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton chooseInputasMoveButton;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JLabel legalMoves;
private javax.swing.JTextArea validMoveTextArea;
private javax.swing.JTextField xIndexField;
private javax.swing.JLabel xIndexLabel;
private javax.swing.JTextField yIndexField;
private javax.swing.JLabel yIndexLabel;
// End of variables declaration
}
可以看出，我尝试通过 GUI 编辑器自动生成的 initComponents() 方法添加它，但它从未被添加，更不用说放置在我想要的区域了。我查不出来。
我得到这个输出:http://s25.postimg.org/vmui6302n/problem_Figure.jpg
如果这是一个愚蠢的问题，请原谅我，因为我是 java 的初学者。
最佳答案
我无法通过简单地在项目中创建一个扩展 JPanel 的类并初始化变量来添加面板。我认为原因是我无法布置面板，因为我对 Layout-s 知之甚少。
因此，为了找到一种方法来满足我的需求，我为面板创建了一个类，然后将其添加到调色板管理器并从调色板设计了我的 UI。这次，我不再通过面板来画骰子。这是代码: GridPanel.java
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridLayout;
import java.awt.Shape;
import javax.swing.JPanel;
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author fs71gh
*/
public class GridPanel extends JPanel{
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
g2.setPaint(Color.GRAY);
for (int i = 1; i < 8; i++) {
int x = i * (getHeight() / 8);
g2.drawLine(x, 0, x, getHeight());
}
for (int i = 1; i < 8; i++) {
int y = i * (getWidth() / 8);
g2.drawLine(0, y, getWidth(), y);
}
}
@Override
public Dimension getPreferredSize() {
return new Dimension(400, 400);
}
}
现在已经完成了。感谢所有提供帮助的人。
关于java - 在 JFrame 中的特定位置设置自定义 JPanel，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/26832615/