Java panel/frame 图片不工作
Java panel/frame graphic not working
我正在尝试使用 Java 图形制作生活模拟游戏,但是当 运行 我的代码时,屏幕左侧的三分之一是 grey.I 希望整个屏幕是白色的,黑色方块代表生活方块。我对所有 java containers/panels 和框架感到困惑。
这是我的代码:
public class ConwayGame {
static JPanel panel;
static JFrame frame;
public static void main(String[] args) throws InterruptedException{
int [][] array = new int [40][40];
/*
* Set the pattern for Conway's Game of Life by manipulating the array below.
*/
/*Acorn
*/
array[19][15]=1;
array[19][16]=1;
array[19][19]=1;
array[19][20]=1;
array[19][21]=1;
array[18][18]=1;
array[17][16]=1;
panel = new JPanel();
Dimension dim = new Dimension(400, 400);
panel.setPreferredSize(dim);
frame = new JFrame();
frame.setSize(400,400 );
Container contentPane = frame.getContentPane();
contentPane.add(panel);
frame.setVisible(true);
/*
* Runs the Game of Life simulation "a" number of times.
*/
Graphics g = panel.getGraphics();
drawArray(array, g);
//paint(g);
//Thread.sleep(125);
//g.dispose();
}
/*
* Creates the graphic for Conway's game of life.
*/
public static void drawArray(int[][] array, Graphics g) {
int BOX_DIM = 10;
for (int i = 0; i < array.length; i++) {
for (int j = 0; j < array[0].length; j++) {
g.drawRect(i * BOX_DIM, j * BOX_DIM, 10, 10);
if (array[i][j] == 0) {
g.setColor(Color.WHITE);
g.fillRect(i * BOX_DIM, j * BOX_DIM, 10, 10);
}
if (array[i][j] == 1) {
g.setColor(Color.BLACK);
g.fillRect(i * BOX_DIM, j * BOX_DIM, 10, 10);
}
}
}
}
}
这是生成的图片:
永远不要使用 Graphics g = panel.getGraphics();
。这不是自定义绘画在 Swing 中的工作方式。查看 Painting in AWT and Swing and Performing Custom Painting 了解有关绘画工作原理的更多详细信息
例如...
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Graphics;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class ConwayGame {
static JPanel panel;
static JFrame frame;
public static void main(String[] args) throws InterruptedException {
int[][] array = new int[40][40];
array[19][15] = 1;
array[19][16] = 1;
array[19][19] = 1;
array[19][20] = 1;
array[19][21] = 1;
array[18][18] = 1;
array[17][16] = 1;
panel = new JPanel() {
@Override
public Dimension getPreferredSize() {
return new Dimension(400, 400);
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
drawArray(array, g);
}
};
frame = new JFrame();
frame.add(panel);
frame.pack();
frame.setVisible(true);
}
/*
* Creates the graphic for Conway's game of life.
*/
public static void drawArray(int[][] array, Graphics g) {
int BOX_DIM = 10;
for (int i = 0; i < array.length; i++) {
for (int j = 0; j < array[0].length; j++) {
g.drawRect(i * BOX_DIM, j * BOX_DIM, 10, 10);
if (array[i][j] == 0) {
g.setColor(Color.WHITE);
g.fillRect(i * BOX_DIM, j * BOX_DIM, 10, 10);
}
if (array[i][j] == 1) {
g.setColor(Color.BLACK);
g.fillRect(i * BOX_DIM, j * BOX_DIM, 10, 10);
}
}
}
}
}
现在,就我个人而言,我会创建一个自定义组件,它从 JPanel
扩展而来,并将您需要的所有逻辑放入 class
我正在尝试使用 Java 图形制作生活模拟游戏,但是当 运行 我的代码时,屏幕左侧的三分之一是 grey.I 希望整个屏幕是白色的,黑色方块代表生活方块。我对所有 java containers/panels 和框架感到困惑。
这是我的代码:
public class ConwayGame {
static JPanel panel;
static JFrame frame;
public static void main(String[] args) throws InterruptedException{
int [][] array = new int [40][40];
/*
* Set the pattern for Conway's Game of Life by manipulating the array below.
*/
/*Acorn
*/
array[19][15]=1;
array[19][16]=1;
array[19][19]=1;
array[19][20]=1;
array[19][21]=1;
array[18][18]=1;
array[17][16]=1;
panel = new JPanel();
Dimension dim = new Dimension(400, 400);
panel.setPreferredSize(dim);
frame = new JFrame();
frame.setSize(400,400 );
Container contentPane = frame.getContentPane();
contentPane.add(panel);
frame.setVisible(true);
/*
* Runs the Game of Life simulation "a" number of times.
*/
Graphics g = panel.getGraphics();
drawArray(array, g);
//paint(g);
//Thread.sleep(125);
//g.dispose();
}
/*
* Creates the graphic for Conway's game of life.
*/
public static void drawArray(int[][] array, Graphics g) {
int BOX_DIM = 10;
for (int i = 0; i < array.length; i++) {
for (int j = 0; j < array[0].length; j++) {
g.drawRect(i * BOX_DIM, j * BOX_DIM, 10, 10);
if (array[i][j] == 0) {
g.setColor(Color.WHITE);
g.fillRect(i * BOX_DIM, j * BOX_DIM, 10, 10);
}
if (array[i][j] == 1) {
g.setColor(Color.BLACK);
g.fillRect(i * BOX_DIM, j * BOX_DIM, 10, 10);
}
}
}
}
}
这是生成的图片:
永远不要使用 Graphics g = panel.getGraphics();
。这不是自定义绘画在 Swing 中的工作方式。查看 Painting in AWT and Swing and Performing Custom Painting 了解有关绘画工作原理的更多详细信息
例如...
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Graphics;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class ConwayGame {
static JPanel panel;
static JFrame frame;
public static void main(String[] args) throws InterruptedException {
int[][] array = new int[40][40];
array[19][15] = 1;
array[19][16] = 1;
array[19][19] = 1;
array[19][20] = 1;
array[19][21] = 1;
array[18][18] = 1;
array[17][16] = 1;
panel = new JPanel() {
@Override
public Dimension getPreferredSize() {
return new Dimension(400, 400);
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
drawArray(array, g);
}
};
frame = new JFrame();
frame.add(panel);
frame.pack();
frame.setVisible(true);
}
/*
* Creates the graphic for Conway's game of life.
*/
public static void drawArray(int[][] array, Graphics g) {
int BOX_DIM = 10;
for (int i = 0; i < array.length; i++) {
for (int j = 0; j < array[0].length; j++) {
g.drawRect(i * BOX_DIM, j * BOX_DIM, 10, 10);
if (array[i][j] == 0) {
g.setColor(Color.WHITE);
g.fillRect(i * BOX_DIM, j * BOX_DIM, 10, 10);
}
if (array[i][j] == 1) {
g.setColor(Color.BLACK);
g.fillRect(i * BOX_DIM, j * BOX_DIM, 10, 10);
}
}
}
}
}
现在,就我个人而言,我会创建一个自定义组件,它从 JPanel
扩展而来,并将您需要的所有逻辑放入 class