【发布时间】：2017-02-21 11:10:39
【问题描述】：
所以，我在我的 Java Swing 项目中遇到了这个问题，我正在制作一个自动运行 whileloop 并输出用户可以在文本字段中定义的文本的机器人。
在这里您可以看到我的代码，用于将文本行添加到我的框架中的 jlabel 中：
btnAddTalking = new JButton("Add");
btnAddTalking.setBounds(144, 211, 146, 23);
btnAddTalking.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if(!txtTalk.getText().equals("")) {
JLabel newLabel = new JLabel(txtTalk.getText());
newLabel.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent arg0) {
frame.remove(newLabel);
frame.repaint();
}
});
newLabel.setHorizontalAlignment(SwingConstants.CENTER);
newLabel.setBounds(159, yLabel, 101, 20);
frame.getContentPane().add(newLabel);
yLabel = yLabel + 20;
frame.getContentPane().setLayout(null);
frame.repaint();
Talk.addTalk(txtTalk.getText());
}
}
});
frame.getContentPane().add(btnAddTalking);
frame.getContentPane().add(lblNewLabel);
frame.getContentPane().add(lblDelayInMs);
之后我按下以下按钮启动我的机器人：
btnStartTalking = new JButton("Start AutoTalk");
btnStartTalking.setBounds(144, 143, 146, 23);
btnStartTalking.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
int robotDelay = Integer.parseInt(timeTalk.getText());
Talk.action = "start";
robotTalk = txtTalk.getText();
if (rdbtnRed.isSelected() == true) {
robotTalk = "red:" + txtTalk.getText();
} else if (rdbtnFlash.isSelected() == true) {
robotTalk = "flash1:" + txtTalk.getText();
} else if (rdbtnGlow.isSelected() == true) {
robotTalk = "glow1:" + txtTalk.getText();
}
autoTalkStart = new Runnable() {
public void run() {
try {
btnStartTalking.setEnabled(false);
btnStopTalking.setEnabled(true);
btnAddTalking.setEnabled(false);
Talk test = new Talk(robotDelay);
} catch (AWTException | InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
new Thread(autoTalkStart).start();
}
});
通过该按钮，我启动了一个线程，该线程通过输出字符串的代码运行。但是在我运行了那个线程之后，我的框架不再显示新添加的 jlabels，在你通过单击 btnStartTalking 按钮运行线程之后，你通过单击 btnAddTalking 按钮添加了这些标签！所以，我的问题是：现在有没有人怎么可能（为什么我的 UI 在我运行线程后不再更新）？
问候，
亚诺夫
在这里你可以看到我的两个类（第 1 类）的完整代码：
import java.awt.EventQueue;
import java.awt.event.InputEvent;
import javax.swing.JFrame;
import javax.swing.JTextField;
import com.sun.glass.events.KeyEvent;
import com.sun.glass.ui.Robot;
import java.awt.AWTException;
import java.awt.BorderLayout;
import javax.swing.BoxLayout;
import javax.swing.ButtonGroup;
import javax.swing.ButtonModel;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JLabel;
import javax.swing.GroupLayout;
import javax.swing.ImageIcon;
import javax.swing.GroupLayout.Alignment;
import javax.swing.SpringLayout;
import javax.swing.SwingConstants;
import javax.swing.JRadioButton;
public class AutoTalker {
private static JFrame frame;
private JTextField txtTalk;
private JTextField timeTalk;
public String robotTalk;
private JButton btnStopTalking;
private JButton btnAddTalking;
private JButton btnStartTalking;
private int yLabel = 266;
private Runnable autoTalkStart;
/**
* Launch the application.
*/
public static void NewFrame() {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
AutoTalker window = new AutoTalker();
window.frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
* @return
*/
public AutoTalker() {
initialize();
}
/**
* Initialize the contents of the frame.
*/
private void initialize() {
frame = new JFrame();
frame.setBounds(100, 100, 450, 415);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setTitle("AutoTalker");
frame.getContentPane().setLayout(null);
JRadioButton rdbtnGlow = new JRadioButton("Glow");
rdbtnGlow.setBounds(6, 113, 64, 23);
rdbtnGlow.setActionCommand("glow");
frame.getContentPane().add(rdbtnGlow);
JRadioButton rdbtnFlash = new JRadioButton("Flash");
rdbtnFlash.setBounds(182, 113, 69, 23);
rdbtnGlow.setActionCommand("flash");
frame.getContentPane().add(rdbtnFlash);
JRadioButton rdbtnRed = new JRadioButton("Red");
rdbtnRed.setBounds(364, 113, 64, 23);
rdbtnGlow.setActionCommand("red");
frame.getContentPane().add(rdbtnRed);
final ButtonGroup rdbtnPressed = new ButtonGroup();
rdbtnPressed.add(rdbtnRed);
rdbtnPressed.add(rdbtnFlash);
rdbtnPressed.add(rdbtnGlow);
txtTalk = new JTextField();
txtTalk.setBounds(130, 28, 173, 20);
txtTalk.setColumns(10);
btnStopTalking = new JButton("Stop AutoTalk");
btnStopTalking.setBounds(144, 177, 146, 23);
btnStopTalking.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
Talk.action = "stop";
btnStartTalking.setEnabled(true);
btnStopTalking.setEnabled(false);
btnAddTalking.setEnabled(true);
frame.repaint();
}
});
btnStartTalking = new JButton("Start AutoTalk");
btnStartTalking.setBounds(144, 143, 146, 23);
btnStartTalking.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
int robotDelay = Integer.parseInt(timeTalk.getText());
Talk.action = "start";
robotTalk = txtTalk.getText();
if (rdbtnRed.isSelected() == true) {
robotTalk = "red:" + txtTalk.getText();
} else if (rdbtnFlash.isSelected() == true) {
robotTalk = "flash1:" + txtTalk.getText();
} else if (rdbtnGlow.isSelected() == true) {
robotTalk = "glow1:" + txtTalk.getText();
}
autoTalkStart = new Runnable() {
public void run() {
try {
btnStartTalking.setEnabled(false);
btnStopTalking.setEnabled(true);
btnAddTalking.setEnabled(false);
Talk test = new Talk(robotDelay);
} catch (AWTException | InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
new Thread(autoTalkStart).start();
frame.repaint();
}
});
timeTalk = new JTextField();
timeTalk.setBounds(174, 71, 86, 20);
timeTalk.setColumns(10);
JLabel lblNewLabel = new JLabel("Text:");
lblNewLabel.setBounds(24, 28, 46, 20);
JLabel lblDelayInMs = new JLabel("Delay in ms:");
lblDelayInMs.setBounds(24, 71, 101, 20);
frame.getContentPane().add(txtTalk);
frame.getContentPane().add(btnStartTalking);
frame.getContentPane().add(btnStopTalking);
frame.getContentPane().add(timeTalk);
btnAddTalking = new JButton("Add");
btnAddTalking.setBounds(144, 211, 146, 23);
btnAddTalking.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if(!txtTalk.getText().equals("")) {
JLabel newLabel = new JLabel(txtTalk.getText());
newLabel.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent arg0) {
frame.remove(newLabel);
frame.repaint();
}
});
newLabel.setHorizontalAlignment(SwingConstants.CENTER);
newLabel.setBounds(159, yLabel, 101, 20);
frame.getContentPane().add(newLabel);
yLabel = yLabel + 20;
frame.getContentPane().setLayout(null);
frame.repaint();
Talk.addTalk(txtTalk.getText());
}
}
});
frame.getContentPane().add(btnAddTalking);
frame.getContentPane().add(lblNewLabel);
frame.getContentPane().add(lblDelayInMs);
btnStopTalking.setEnabled(false);
}
}
第 2 类：
import java.awt.AWTException;
import java.awt.Robot;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import java.io.IOException;
import java.util.ArrayList;
public class Talk extends AutoTalker {
Robot robot = new Robot();
public static String action;
public static ArrayList<String> Talks = new ArrayList<String>();
public Talk(int wait) throws AWTException, InterruptedException {
robot.delay(5000);
while(action == "start") {
for(int i = 0; i < Talks.size();i++) {
String text = Talks.get(i);
type(text);
robot.delay(wait);
}
}
}
public static void addTalk(String text) {
Talks.add(text);
}
private void type(String s)
{
for (int i = 0; i < s.length(); i++){
char c = s.charAt(i);
switch(c) {
case '!':
robot.keyPress(KeyEvent.VK_SHIFT);
robot.keyPress(KeyEvent.VK_1);
robot.keyRelease(KeyEvent.VK_SHIFT);
robot.keyRelease(KeyEvent.VK_1);
break;
case ':':
robot.keyPress(KeyEvent.VK_SHIFT);
robot.keyPress(KeyEvent.VK_SEMICOLON);
robot.keyRelease(KeyEvent.VK_SEMICOLON);
robot.keyRelease(KeyEvent.VK_SHIFT);
break;
default:
robot.keyPress(Character.toUpperCase(c));
break;
}
robot.delay(10);
}
robot.keyPress(KeyEvent.VK_ENTER);
robot.keyRelease(KeyEvent.VK_ENTER);
robot.delay(10);
}
}
【问题讨论】：
-
您在问题文本中提到了 JavaFX，但这不是 JavaFX 代码。此外，不建议使用
com.sun.glass类，因为它们不是公开导出的 JRE API 的一部分，并且它们的接口可能会在未来的 Java 版本中更改或删除。 -
感谢您的回复。我以为是 JavaFX 代码，但我可能错了 :)。你知道我实际上做错了什么吗？
-
我不是 Swing 开发方面的专家，所以我不会回答这个问题。我编辑了您的问题以删除 JavaFX 引用并添加了一个 Swing 标记，这可能会帮助您找到一些愿意查看它的 Swing 专家。如果您提供mcve（请注意，必须是minimal 和complete，因为它可以被编译并执行运行）。此外，使用正确的缩进格式化代码并删除无用的空格。
标签： java multithreading swing frame windowbuilder