我有透明图像列表,当用户点击JButton并且在actionListener中遇到循环问题时,我想在GUI上循环。我有3个JCheckBox,因此根据选择的那个,这是改变的类型。现在,我无法同时显示多张图片,而且当再次点击JButton时,我无法将其更改为下一张图片。此外,faceImages中的图像是实心圆圈,当我没有选择任何JCheckBox时我想要更改它,所以我必须弄清楚如何将它放在其他图像之后..所以请你选择哪个问题你我想帮助我:)
这是我的代码:(我正在处理的ActionPerfored位于最底层,但我将剩下的作为参考)
public Color myColor;
private JPanel contentPane;
JLabel label;
JCheckBox checkBoxEyes;
JCheckBox checkBoxNose;
JCheckBox checkBoxMouth;
JButton btnSubmit;
Icon plainFace = new ImageIcon(getClass().getResource("plainCircle.png"));
Icon pinkFace = new ImageIcon(getClass().getResource("pinkCircle.png"));
Icon redFace = new ImageIcon(getClass().getResource("redCircle.png"));
Icon greenFace = new ImageIcon(getClass().getResource("greenCircle.png"));
Icon eyes1 = new ImageIcon(getClass().getResource("eyes1.png"));
Icon eyes2 = new ImageIcon(getClass().getResource("eyes2.png"));
Icon eyes3 = new ImageIcon(getClass().getResource("eyes3.png"));
Icon nose1 = new ImageIcon(getClass().getResource("nose1.png"));
Icon nose2 = new ImageIcon(getClass().getResource("nose2.png"));
Icon nose3 = new ImageIcon(getClass().getResource("nose3.png"));
Icon mouth1 = new ImageIcon(getClass().getResource("mouth1.png"));
Icon mouth2 = new ImageIcon(getClass().getResource("mouth2.png"));
Icon mouth3 = new ImageIcon(getClass().getResource("mouth3.png"));
Icon faceImages[] =
{ pinkFace, greenFace, redFace };
Icon eyesImages[] =
{ eyes1, eyes2, eyes3 };
Icon noseImages[] =
{ nose1, nose2, nose3 };
Icon mouthImages[] =
{ mouth1, mouth2, mouth3 };
public ArrayList<Shape> eyeList = new ArrayList<Shape>();
public ArrayList<Shape> noseList = new ArrayList<Shape>();
public ArrayList<Shape> mouthList = new ArrayList<Shape>();
public ArrayList<Shape> backgroundList = new ArrayList<Shape>();
/**
* Launch the application.
*/
public static void main(String[] args)
{
// EventQueue
SwingUtilities.invokeLater(new Runnable()
{
@Override
public void run()
{
try
{
Face frame = new Face();
frame.setVisible(true);
} catch (Exception e)
{
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public Face()
{
setTitle("Face");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 550, 500);
contentPane = new JPanel();
contentPane.setBackground(Color.GRAY);
contentPane.setSize(new Dimension(200, 300));
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
JPanel panel = new JPanel();
panel.setBounds(0, 31, 97, 218);
panel.setAlignmentY(Component.TOP_ALIGNMENT);
contentPane.add(panel);
checkBoxEyes = new JCheckBox("Eyes");
checkBoxEyes.getBounds();
checkBoxEyes.setVerticalAlignment(SwingConstants.TOP);
checkBoxEyes.setSelected(false);
panel.setLayout(new MigLayout("", "[83px]", "[45.00px][45.00px][46.00px][50.00px]"));
panel.add(checkBoxEyes, "cell 0 0,grow");
checkBoxNose = new JCheckBox("Nose");
checkBoxNose.setVerticalAlignment(SwingConstants.TOP);
checkBoxNose.setSelected(false);
panel.add(checkBoxNose, "cell 0 1,grow");
checkBoxMouth = new JCheckBox("Mouth");
checkBoxMouth.setVerticalAlignment(SwingConstants.TOP);
checkBoxMouth.setSelected(false);
panel.add(checkBoxMouth, "cell 0 2,grow");
btnSubmit = new JButton("Submit");
btnSubmit.getBounds(new Rectangle(10, 10, 50, 50));
btnSubmit.addActionListener(this);
panel.add(btnSubmit, "cell 0 3");
label = new JLabel("");
label.setLocation(102, 31);
label.setIcon(plainFace);
label.setPreferredSize(new Dimension(800, 500));
label.setSize(new Dimension(421, 381));
label.setOpaque(true);
label.setBackground(Color.ORANGE);
contentPane.add(label);
}
public void createFace(Graphics g)
{
super.paint(g);
g.setColor(getColor());
g.fillOval(20, 20, 100, 100);
}
public Color getColor()
{
return myColor;
}
public void actionPerformed(ActionEvent e)
{
if (checkBoxEyes.isSelected() == true)
{
for(Icon i : eyesImages)
{
label.setIcon(i);
}
}
if (checkBoxNose.isSelected() == true)
{
for(Icon i : noseImages)
{
label.setIcon(i);
}
}
if (checkBoxMouth.isSelected() == true)
{
for(Icon i : mouthImages)
{
label.setIcon(i);
}
} else
{
for(Icon i : faceImages)
{
label.setIcon(i);
}
}
}
答案 0 :(得分:2)
在setIcon()上循环会产生如此快速地更改图标的效果,最终只能看到您设置的最后一个图标。你想要做的是在循环中插入一个延迟。但是,actionPerformed()由事件调度线程执行,该线程也是负责绘制UI的线程,因此当线程在其中(并更改图标)时,不会呈现UI。所以,这是你应该尝试的:
j
这是这样做的:当事件调度线程调用actionPerformed()时,它会创建第二个线程。该线程遍历不同功能的各种ifs,并在图像上循环。对于每个图像,它设置图标并等待一段时间(100毫秒)。为了设置图像,你不能直接从这个线程调用setIcon(),因为一般的swing API必须由事件调度线程调用。因此,从新线程中调用SwingUtilities.invokeLater(),它将可执行文件排入EDT执行。
编辑:
啊,如果你想在每次按下按钮时转到下一张图像:
public void actionPerformed(ActionEvent e) {
final boolean eyes = checkBoxEyes.isSelected();
/* add booleans for other features here */
Thread t = new Thread() {
public void run() {
if (eyes) {
for(Icon i : eyesImages) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
label.setIcon(i));
}
});
try {
Thread.sleep(100);
}catch(ThreadInterruptedException ex){}
}
}
}
// add cases for other features
}
}
t.start();
}