【发布时间】：2020-04-22 05:13:41
【问题描述】：
所以我正在设计一个 GUI（GUI 本身位于一个名为 mainGUI 的单独类中）。 GUI 有 2 个按钮，每个按钮将 main.subProgramNumber 设置为 1 或 2（取决于按钮），将 main.safeToContinue 设置为 false，然后使用 dispose() 处理 GUI。但是当我单击 GUI 中的按钮时，GUI 会关闭，然后什么也没有发生。我已经使用了调试器，奇怪的是，使用调试工具的代码表现得不同。使用调试工具时，我单击按钮后 GUI 保持打开状态并永久加载。欢迎任何帮助。
genData main = new genData();
main.safeToContinue = false;
main.running = true;
while(main.running == true){
//trigger GUI
mainGUI MG = new mainGUI();
MG.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
MG.setSize(250, 275);
MG.setVisible(true);
//wait tell the GUI says its safe to continue
while(main.safeToContinue == false){
try {
TimeUnit.MILLISECONDS.sleep(1);
} catch (InterruptedException ex) {
Logger.getLogger(mainGUI.class.getName()).log(Level.SEVERE, null, ex);
}
}
//check if main.subProgram is 1
if(main.subProgramNumber == 1){
System.out.println("subProgram = 1");
}
//check if main.subProgram is 2
if(main.subProgramNumber == 2){
System.out.println("subProgram = 2");
}
}
下面是我的 GUI 代码的简化版本。 （对不起，它的代码很多，但我不知道如何使它比这更简单......）
public class mainGUI extends JFrame{
public JButton add;
public JButton remove;
public JButton edit;
public JButton report;
public JButton close;
public mainGUI(){
super("Guest Manager");
setLayout(new FlowLayout());
add = new JButton("Add a Guest");
remove = new JButton("Remove a Guest");
close = new JButton("Close");
add(add);
add(remove);
add(close);
addGuest ag = new addGuest();
add.addActionListener(ag);
removeGuest rg = new removeGuest();
remove.addActionListener(rg);
Close c = new Close();
close.addActionListener(c);
}
private class addGuest implements ActionListener{
public void actionPerformed(ActionEvent e){
genData main = new genData();
main.subProgramNumber = 1;
main.safeToContinue = true;
dispose();
}
}
private class removeGuest implements ActionListener{
public void actionPerformed(ActionEvent e){
genData main = new genData();
main.subProgramNumber = 2;
main.safeToContinue = true;
dispose();
}
}
private class Close implements ActionListener{
public void actionPerformed(ActionEvent e){
genData main = new genData();
main.safeToContinue = true;
dispose();
}
}
}
下面是我使用过（并且正在使用上面）的技术的一个请求的、可行的示例
主程序（点击开始时调用）：
varData MC = new varData();
do{
MC.safeToContinue = false;
//open and run the main GUI
ExerciseMainGUI EM = new ExerciseMainGUI();
EM.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
EM.setSize(250, 275);
EM.setVisible(true);
//System.out.println("debug 1");
//wait tell the sub program closes to continue
do{
hutLib.pause(1);
}while(MC.safeToContinue==false);
hutLib.pause(1);
}while(MC.running == true);
我在上面调用的 GUI：
public class ExerciseMainGUI extends JFrame{
private JButton bottlePacker;
private JButton triangleTester;
private JButton primeChecker;
private JButton averager;
private JButton rollTheDice;
private JButton close;
public ExerciseMainGUI(){
super("Java Exercises");
setLayout(new FlowLayout());
bottlePacker = new JButton(" Bottle Packer ");
triangleTester = new JButton(" Triangle Tester ");
primeChecker = new JButton(" Prime Checker ");
averager = new JButton ("Averager (offline)");
rollTheDice = new JButton("Roll the Dice (offline)");
close = new JButton(" Close ");
add(bottlePacker);
add(triangleTester);
add(primeChecker);
add(averager);
add(rollTheDice);
add(close);
bottlePacker bp = new bottlePacker();
bottlePacker.addActionListener(bp);
triangleTester tt = new triangleTester();
triangleTester.addActionListener(tt);
primeChecker pc = new primeChecker();
primeChecker.addActionListener(pc);
averager a = new averager();
averager.addActionListener(a);
rollTheDice rtd = new rollTheDice();
rollTheDice.addActionListener(rtd);
close c = new close();
close.addActionListener(c);
}
private class bottlePacker implements ActionListener{
public void actionPerformed(ActionEvent e){
dispose();
//runs a subprogram
}
}
private class triangleTester implements ActionListener{
public void actionPerformed(ActionEvent e){
dispose();
//runs a subprogram
}
}
private class primeChecker implements ActionListener{
public void actionPerformed(ActionEvent e){
dispose();
//runs a subprogram
}
}
private class averager implements ActionListener{
public void actionPerformed(ActionEvent e){
dispose();
//runs a subprogram
}
}
private class rollTheDice implements ActionListener{
public void actionPerformed(ActionEvent e){
dispose();
//runs a subprogram
//JOptionPane.showMessageDialog(null, "NOTE: Roll the Dice will run in the command line.");
//oldCodeStorage.rollTheDice.rollTheDice();
}
}
private class close implements ActionListener{
public void actionPerformed(ActionEvent e){
dispose();
varData MC = new varData();
MC.running = false;
MC.safeToContinue = true;
}
}
}
注意：每个子程序完成后会运行以下代码：
varData MC = new varData();
MC.safeToContinue = true;
我知道这很多，但我被明确要求发布。
【问题讨论】：
-
评论不用于扩展讨论；这个对话是moved to chat。
标签： java swing user-interface