我搜索了一下，还问了更多有经验的朋友，却找不到任何东西。我正在尝试使用java制作录音软件（例如像fraps，bandicam）。基本上它没有问题，甚至很好，我错误地注意到了，因为我每2毫秒制作一个图像并且效果很好=）我唯一的问题是图像太大了，没有一个小的jframe可以打印在它上面（当然1080p屏幕不适合像600p帧：/）所以我试图用Image.getScaledInstance（）来缩放它但是当我打印缩放图像时它开始闪烁，所以你看到图像的短暂时间时间（如半秒）然后就消失了。 （注意：当我使用调试器模式时，它的工作非常完美，我也知道代码中的框架不好，我还没有保存任何东西。我使用的是Netbeans IDE。）
代码：
package Main;
import java.awt.AWTException;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.util.Timer;
import java.util.TimerTask;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
*
* @author Lucas
*/
public class MainClass {
private DisplayFrame DF;
private boolean isRecOn;
private int counter = 0;
private BufferedImage[] images;
public void MainClass(){
DF = new DisplayFrame(this);
DF.setVisible(true);
}
/**
*
*/
public void on_offRec(boolean on_off){
this.isRecOn = on_off;
if(on_off == true){
try {
this.doRecording();
} catch (AWTException ex) {
Logger.getLogger(MainClass.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
private void doRecording() throws AWTException{
Robot robo = new Robot();
BufferedImage bi = this.giveAFrame(robo);
boolean changeDisplay = DF.changeDisplay(bi);
if(changeDisplay == true){
Timer timy = new Timer();
TimerTask tt = new TimerTask() {
@Override
public void run() {
try {
doRecording();
} catch (AWTException ex) {
Logger.getLogger(MainClass.class.getName()).log(Level.SEVERE, null, ex);
}
}
};
timy.schedule(tt, 2);
}
this.counter = this.counter +1;
}
private BufferedImage giveAFrame(Robot robo){
Dimension rectt = Toolkit.getDefaultToolkit().getScreenSize();
Rectangle rect = new Rectangle(rectt.width,rectt.height);
BufferedImage createScreenCapture = robo.createScreenCapture(rect);
return createScreenCapture;
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
MainClass mc = new MainClass();
mc.MainClass();
}
}
package Main;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.image.BufferedImage;
/**
*
* @author Lucas
*/
public class DisplayFrame extends javax.swing.JFrame {
private boolean isRecOn = false;
private Object recall;
/**
* Creates new form DisplayFrame
*/
public DisplayFrame(Object returner) {
initComponents();
recall = returner;
this.getRootPane().addComponentListener(new ComponentAdapter() {
public void componentResized(ComponentEvent e) {
// This is only called when the user releases the mouse button.
IGotResized(e);
}
});
}
private void IGotResized(ComponentEvent e){
System.out.println("Testification rezised msg");
}
public boolean changeDisplay(BufferedImage bi){
Graphics g = this.getGraphics();
Image i = bi.getScaledInstance(this.getWidth() - 20, this.getHeight() - jButton1.getX() - 10, Image.SCALE_FAST);
g.drawImage(i,0 + 20 , 0+20, this);
return isRecOn;
}
/**
* 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() {
jButton1 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jButton1.setText("Start/Stop");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jButton1)
.addContainerGap(434, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap(353, Short.MAX_VALUE)
.addComponent(jButton1)
.addContainerGap())
);
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
if (isRecOn == true){
isRecOn = false;
}else{
isRecOn = true;
((MainClass)(recall)).on_offRec(isRecOn);
}
}
/**
* @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(DisplayFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(DisplayFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(DisplayFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(DisplayFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
// End of variables declaration
}
答案 0 :(得分：0)
问题是，您在自定义函数中绘制图像。在swing中，每个组件都有自己的paint(...)函数，如果需要重新绘制组件，框架将调用它：
因此，您需要覆盖paint(...)课程中的DisplayFrame功能。将当前Image保存为类参数，并在重写的paint(...)函数中使用它。