java - ActionListener 只工作一次，其他的则永远不会

Question

我正在尝试制作一个简单的项目，根据您的 rollProgress 数量生成随机数量的“铜”。每当你获得 100 铜时，你可以将其转换为银，100 银可以转换为金。要增加滚动进度，您需要单击按钮添加一、二、五或十，并“支付”一定数量的银和铜。

“生成”按钮每次都有效，“copperToSilver”按钮也一样，因此我删除了代码以将其压缩。我还从 GUI 类中删除了文本字段，该字段显示了您当前拥有的铜/银/金的数量。

问题在于，addRoll ActionListener 仅在我第一次按下时才起作用，此后无论是否满足要求，它都不起作用。该项目尚未完成，但完成的其余部分似乎根本不起作用。

我删除了临时调试，但当您按下 addTwoRoll 按钮时，RollProgressPlusTwo 方法似乎根本不运行，而它应该运行。

代码如下:

主类:

import javax.swing.JFrame;

public class MainClass {    
    public static void main(String args[]) {
        GUI go = new GUI();
        go.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        go.setSize(350,300);
        go.setResizable(true);
        go.setLocationRelativeTo(null);
        go.setVisible(true);
    }
}

GUI 类:

import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import java.util.Random;

public class GUI extends JFrame {
    Button bo = new Button();
    CoinTracker cto = new CoinTracker();
    TextFields tfo = new TextFields();
    RollProgress rpo = new RollProgress();

    public GUI() {
        super("Money dice");
        setLayout(new GridLayout(11,1,3,3));

        add(bo.generate);

        add(tfo.currentCashField);
        add(tfo.goldField);
        add(tfo.silverField);
        add(tfo.copperField);

        add(bo.copperToSilver);
        add(bo.silverToGold);
        add(bo.addRoll);
        add(bo.addTwoRoll);
        add(bo.addFiveRoll);
        add(bo.addTenRoll);

        GenerateHandler ghandler = new GenerateHandler();
        bo.generate.addActionListener(ghandler);

        ConvertToSilverHandler ctshandler = new ConvertToSilverHandler();
        bo.copperToSilver.addActionListener(ctshandler);

        PlusOneHandler pohandler = new PlusOneHandler();
        bo.addRoll.addActionListener(pohandler);

        PlusTwoHandler ptwhandler = new PlusTwoHandler();
        bo.addTwoRoll.addActionListener(ptwhandler);
    }

    private class GenerateHandler implements ActionListener {
        public void actionPerformed(ActionEvent event) {
            Random roll = new Random();
            cto.copper = cto.copper+1+roll.nextInt(rpo.rollProgress);
            tfo.copperField.setText(cto.copper + " copper");
            tfo.silverField.setText(cto.silver + " silver");
            tfo.goldField.setText(cto.gold + " gold");
        }
    }

    private class PlusOneHandler implements ActionListener {
        public void actionPerformed(ActionEvent event) {
            rpo.RollProgressPlusOne();
            tfo.copperField.setText(cto.copper + " copper");
            tfo.silverField.setText(cto.silver + " silver");
            tfo.goldField.setText(cto.gold + " gold");
        }
    }

    private class PlusTwoHandler implements ActionListener {
        public void actionPerformed(ActionEvent event) {
            rpo.RollProgressPlusTwo();
            tfo.copperField.setText(cto.copper + " copper");
            tfo.silverField.setText(cto.silver + " silver");
            tfo.goldField.setText(cto.gold + " gold");
        }
    }

    private class ConvertToSilverHandler implements ActionListener {
        public void actionPerformed(ActionEvent event) {
            cto.toSilver();
            tfo.copperField.setText(cto.copper + " copper");
            tfo.silverField.setText(cto.silver + " silver");
            tfo.goldField.setText(cto.gold + " gold");
        }
    }
}

CoinTracker 类:

import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;

public class CoinTracker {
    public int copper = 98;
    public int silver = 1;
    public int gold = 0;

    public void toSilver() {
        if(copper >= 100) {
            copper -= 100;
            silver++;
        }
    }
}

按钮类:

import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;

public class Button extends JFrame {
    public JButton generate;
    public JButton copperToSilver;
    public JButton silverToGold;
    public JButton addRoll;
    public JButton addTwoRoll;
    public JButton addFiveRoll;
    public JButton addTenRoll;

    public Button() {
        generate = new JButton("Generate");
        copperToSilver = new JButton("Convert 100 copper to 1 silver");
        silverToGold = new JButton("Convert 100 silver to 1 gold");
        addRoll = new JButton("Pay 1 silver to add one number to the dice");
        addTwoRoll = new JButton("Pay 2 silver to add two numbers to the dice");
        addFiveRoll = new JButton("Pay 4 silver and 50 copper to add five numbers to the dice");
        addTenRoll = new JButton("Pay 9 silver to add ten numbers to the dice");
    }
}

文本字段类:

import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;

public class TextFields {
    public JTextField currentCashField;
    public JTextField copperField;
    public JTextField silverField;
    public JTextField goldField;
    CoinTracker ctotf = new CoinTracker();

    public TextFields() {
        currentCashField = new JTextField("Your current cash is:");
        copperField = new JTextField(ctotf.copper + " copper");
        silverField = new JTextField(ctotf.silver + " silver");
        goldField = new JTextField(ctotf.gold + " gold");   
    }
}

RollProgress 类:

import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;

public class RollProgress {
    public int rollProgress = 1;
    CoinTracker ctorp = new CoinTracker();

    public void RollProgressPlusOne() { 
        if(ctorp.silver >= 1) {
            rollProgress++;
            ctorp.silver--;
            System.out.println(rollProgress);
        }
    }

    public void RollProgressPlusTwo() {
        if(ctorp.silver >= 2) {
            rollProgress++;
            rollProgress++;
            ctorp.silver--;
            ctorp.silver--;
            System.out.println(rollProgress);
        }
    }
}

提前感谢您尝试解决/解决方案。

Answer 1

此代码存在很多结构问题，但最严重的问题是您有两个 Cointracker 实例。处理程序仅更新 GUI 实例，并且 RollProgress 没有对该实例的引用。为 RollProgress 创建一个构造函数并传递 GUI 中使用的 CoinTracker。

CoinTracker ctorp ;//= new CoinTracker();

public  RollProgress(CoinTracker ct){
    this.ctorp = ct;
}

处理程序正在以其他方式工作。