如何在Java界面上同时显示多张图片？我用了继承Thread类，结果发现显示时候屏幕很闪，怎么办，有没有更好的办法？或者如何解决这个问题？
- Java code
public class SolarSystem extends JFrame{ public void lode(){ new PaintThread().start(); } Image sun = Toolkit.getDefaultToolkit().getImage("image/sun.jpg"); Image earth = Toolkit.getDefaultToolkit().getImage("image/earth.jpg"); public void paint(Graphics g){ g.setColor(Color.blue); g.drawImage(backGround , 0 , 0 , null); g.drawImage(sun , 435 , 275 , null); t = t + Math.PI / 36.5; t1 = t + Math.PI / 0.1; g.drawOval(120, 145, 600, 400); g.drawImage(earth , (int)x ,(int)y, null); x = 375 + 300 * Math.cos(t); y = 285 + 200 * Math.sin(t); } public static void main(String[] args){ int x_size, y_size; //横纵坐标 x_size = (int) (Toolkit.getDefaultToolkit().getScreenSize().getWidth()); y_size = (int) (Toolkit.getDefaultToolkit().getScreenSize().getHeight()); SolarSystem solarSystem = new SolarSystem(); solarSystem.setSize(900, 800); solarSystem.setLocation((x_size - 800) / 2, (y_size - 780) / 2); solarSystem.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); solarSystem.setVisible(true); //earth.setResizable(false); solarSystem.lode(); } private class PaintThread extends Thread{ public void run(){ while(true){ repaint(); try { Thread.sleep(20); } catch (InterruptedException e) { e.printStackTrace(); } } } }}------解决方案--------------------
双缓冲啊...
------解决方案--------------------
private Image offScreenImage = null;
protected static final int WIN_WIDTH = 800;
protected static final int WIN_HEIGHT = 600;
@Override
public void update(Graphics g) {
if (offScreenImage == null) {
offScreenImage = this.createImage(WIN_WIDTH, WIN_HEIGHT);
}
Graphics gOffScreen = offScreenImage.getGraphics();
Color c = gOffScreen.getColor();
gOffScreen.setColor(Color.BLACK);
gOffScreen.fillRect(0, 0, WIN_WIDTH, WIN_HEIGHT);
gOffScreen.setColor(c);
paint(gOffScreen);
g.drawImage(offScreenImage, 0, 0, null);
}
------解决方案--------------------
继承 JPanel，在 paintComponent方法里绘制。使用 javax.swing.Timer 定时更新。
然后 加到 JFrame里。
继承 JFrame 重写 paint 还是 awt的思路。swing不同了