Conway的生命GUI遊戲

Question

我一直在研究康威GOL課程的副本，並且在GUI呈現時遇到問題。

Quick rundown： GUI創建一個Frame和一個mainPanel，設置爲BorderLayout。

一旦我實例化網格本身並將其分配給mainPanel，它應該在網格中顯示我的二維數組，但它不會。在過去的2個小時裏，我的頭撞在牆上。

FWIW，我無法使用IDE在此基礎上構建GUI。下面的代碼：

GUI

  import java.awt.*; 
import java.awt.event.*; 
import java.awt.Color; 
import java.awt.GridBagLayout; 
import java.awt.BorderLayout; 
import javax.swing.JButton; 
import javax.swing.JFrame; 
import javax.swing.JPanel; 
import javax.swing.border.*; 
import java.util.Observer; 
import java.util.Observable; 

public class GameOfLifeGUI extends JFrame implements Observer { 

    private JPanel mainPanel; 
    private JPanel gridPanel; 
    private JPanel startPanel; 
    private JPanel titlePanel; 
    private JButton start; 
    private Cell cell; 
    private Grid grid; 
    private MouseEvent mouseClicked; 
    private MouseEvent mouseDragged; 
    private MouseEvent mousePressed; 
    private MouseEvent mouseRelease; 
    private MouseListener mouseListener; 

    public GameOfLifeGUI() { 
     super(""); 
     //Create Start Button for startPanel 
     JButton start = new JButton("Start"); 

     //Creates a Grid to add to the panel 
     grid = new Grid(75,75); 

     //Create JPanels 
     mainPanel = new JPanel(); 
     gridPanel = new JPanel(); 
     startPanel = new JPanel(); 
     titlePanel = new JPanel(); 

     /** 
     * Add Grid to gridPanel 
     * Modify Grid(int, int) to change size of Grid. Per spec, this grid should always be 75x75 
     */ 

     //Create gridPanel 
     gridPanel.setLayout(new GridLayout(75,75)); 
     gridPanel.setBackground(Color.WHITE); 
     gridPanel.add(grid); 

     //Set Layout of Panels 
     mainPanel.setLayout(new BorderLayout()); 
     mainPanel.add(gridPanel, BorderLayout.CENTER); 
     mainPanel.add(startPanel, BorderLayout.SOUTH); 
     mainPanel.add(titlePanel, BorderLayout.NORTH); 

     //Add Start Button to startPanel 
     startPanel.add(start); 

     //Creates a window for displaying the GUI 
     this.setTitle("Conway's Game of Life"); 
     this.setSize(1000, 750); 
     this.setLocationRelativeTo(null); 
     this.add(mainPanel); 
     this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     this.setVisible(true); 

    }//end Constructor 

電網

import java.awt.*; 
import javax.swing.*; 
import java.awt.event.*; 
import java.awt.Component; 
import java.awt.Color; 
import javax.swing.JPanel.*; 
import java.util.Observer; 
import java.util.Arrays; 
import java.util.Observable; 

public class Grid extends JPanel{ 

    private Cell[][] grid; 
    private int column; 
    private int row; 

    /** 
    * Constructs a Grid of Cells 
    * columns is a column of cells 
    * rows is a row of cells 
    */ 

    public Grid(int column, int row){ 
    this.column = column; 
    this.row = row; 

    // create a grid of cells 
    grid = new Cell[row][column]; 
    for (int r = 0; r < row; r++){ 
     for (int c = 0; c < column; c++){ 
     grid[r][c] = new Cell(r,c); 
     } 
    } 
    //Creates a border of cells around grid for edge case handling 
    //All cells in this border will be dead and incapable of living 
    for (int c = 0; c < column; c++){ 
     grid[0][c] = new Cell(row, column); 
    } 
    for (int c = 0; c < column-1; c++){ 
     grid[row-1][c] = new Cell(row, column); 
    } 
    for (int r = 0; r < row; r++){ 
     grid[r][0] = new Cell(row, column); 
    } 
    for (int r = 0; r < row-1; r++){ 
     grid[r][column - 1] = new Cell(row, column); 
    } 
    }//end Constructor 

如果您需要更多的信息，請讓我知道 - 不希望在我的第一篇代碼轉儲。

Answer 1

網格類沒有方法paintComponent。使用java圖形類中的drawRect（）方法的簡單嵌套for循環修復了問題。