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我试图启动一个游戏启动器，它工作正常，直到昨天（我已经写了大部分代码），然后它只是开始抛出非法状态异常像明天一样没有地方。当试图运行我的游戏启动器时抛出IllegalStateException
，我为我的生活不能找出解决办法:(
所以这是我的代码：
package com.MHafi.Pandora.gui;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.image.BufferStrategy;
import java.awt.image.BufferedImage;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import com.MHafi.Pandora.Configuration;
import com.MHafi.Pandora.Display;
import com.MHafi.Pandora.RunGame;
import com.MHafi.Pandora.input.InputHandler;
public class Launcher extends JFrame implements Runnable {
private static final long serialVersionUID = 1L;
protected JPanel window = new JPanel();
private JFrame frame = new JFrame();
Configuration config = new Configuration();
private int width = 800;
private int height = 390;
protected int button_width = 80;
protected int button_height = 39;
boolean running = false;
Thread thread;
private BufferedImage img;
public Launcher(int id) {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (Exception e) {
e.printStackTrace();
}
frame.setUndecorated(true);
frame.setTitle(Display.TITLE + " Launcher");
frame.setSize(new Dimension(width, height));
frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
frame.getContentPane().add(window);
//frame.add(this);
frame.setLocationRelativeTo(null);
frame.setResizable(false);
frame.setVisible(true);
window.setLayout(null);
System.out.println("YAY");
InputHandler input = new InputHandler();
addKeyListener(input);
addFocusListener(input);
addMouseListener(input);
addMouseMotionListener(input);
startMenu();
frame.repaint();
}
public void updateFrame() {
if (InputHandler.dragged) {
Point p = frame.getLocation();
int x = frame.getX();
int y = frame.getY();
frame.setLocation (x + InputHandler.MouseDX - InputHandler.MousePX, y + InputHandler.MouseDY - InputHandler.MousePY);
}
}
public void startMenu() {
running = true;
thread = new Thread(this, "menu");
thread.start();
}
public void stopMenu() {
try {
thread.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
public void run() {
requestFocus();
while (running) {
renderMenu();
updateFrame();
}
}
private void renderMenu() throws IllegalStateException {
System.out.println("1");
BufferStrategy bs = this.getBufferStrategy();
if (bs == null) {
createBufferStrategy(3);
System.out.println("2");
}
Graphics g = bs.getDrawGraphics();
g.setColor(Color.BLACK);
g.fillRect(0, 0, 800, 390);
System.out.println("3");
try {
g.drawImage(ImageIO.read(Launcher.class.getResource("/Launcher.png")), 0, 0, 800, 390, null);
System.out.println("4");
if (InputHandler.MouseX > 50 && InputHandler.MouseX < 50 + 60 && InputHandler.MouseY > 110 && InputHandler.MouseY < 110 + 25) {
g.drawImage(ImageIO.read(Launcher.class.getResource("/menu/play_on.png")), 50, 110, 60, 30, null);
g.drawImage(ImageIO.read(Launcher.class.getResource("/menu/Pointer.png")), 115, 118, 30, 14, null);
if (InputHandler.MouseButton == 1) {
config.loadConfiguration("res/config/config.xml");
dispose();
new RunGame();
}
} else {
g.drawImage(ImageIO.read(Launcher.class.getResource("/menu/play_off.png")), 50, 110, 60, 30, null);
}
if (InputHandler.MouseX > 50 && InputHandler.MouseX < 50 + 60 && InputHandler.MouseY > 140 && InputHandler.MouseY < 140 + 25) {
g.drawImage(ImageIO.read(Launcher.class.getResource("/menu/Options_on.png")), 50, 141, 100, 30, null);
g.drawImage(ImageIO.read(Launcher.class.getResource("/menu/Pointer.png")), 155, 149, 30, 14, null);
if (InputHandler.MouseButton == 1) {
System.out.println("Options");
}
} else {
g.drawImage(ImageIO.read(Launcher.class.getResource("/menu/Options_off.png")), 50, 140, 100, 30, null);
}
if (InputHandler.MouseX > 50 && InputHandler.MouseX < 50 + 60 && InputHandler.MouseY > 175 && InputHandler.MouseY < 175 + 25) {
g.drawImage(ImageIO.read(Launcher.class.getResource("/menu/Help_on.png")), 50, 175, 60, 30, null);
g.drawImage(ImageIO.read(Launcher.class.getResource("/menu/Pointer.png")), 115, 183, 30, 14, null);
} else {
g.drawImage(ImageIO.read(Launcher.class.getResource("/menu/Help_off.png")), 50, 175, 60, 30, null);
}
if (InputHandler.MouseX > 50 && InputHandler.MouseX < 50 + 60 && InputHandler.MouseY > 210 && InputHandler.MouseY < 210 + 25) {
g.drawImage(ImageIO.read(Launcher.class.getResource("/menu/Quit_on.png")), 50, 210, 60, 30, null);
g.drawImage(ImageIO.read(Launcher.class.getResource("/menu/Pointer.png")), 115, 218, 30, 14, null);
if (InputHandler.MouseButton == 1) {
System.exit(0);
}
} else {
g.drawImage(ImageIO.read(Launcher.class.getResource("/menu/Quit_off.png")), 50, 210, 60, 30, null);
}
} catch (IOException e) {
e.printStackTrace();
}
g.dispose();
bs.show();
}
}
这里是抛出的错误：
YAY
1
Exception in thread "menu" java.lang.IllegalStateException: Component must have a valid peer
at java.awt.Component$FlipBufferStrategy.createBuffers(Unknown Source)
at java.awt.Component$FlipBufferStrategy.<init>(Unknown Source)
at java.awt.Component$FlipSubRegionBufferStrategy.<init>(Unknown Source)
at java.awt.Component.createBufferStrategy(Unknown Source)
at java.awt.Window.createBufferStrategy(Unknown Source)
at java.awt.Component.createBufferStrategy(Unknown Source)
at java.awt.Window.createBufferStrategy(Unknown Source)
所以怎么回事？
为什么我不能创建一个BufferStrategy？