所以本质上来说，问题是我完全有能力发行一张卡，但我无法在框架中显示该卡。应该发生的是，每当用户希望发卡时，它将显示在控制台窗口中，并且卡的图像也将显示在框架中。图像本身的标题为“ 5d.gif”或“ ah.gif”，它们与控制台窗口中的输出相对应，因为当用户要求发卡时，然后以“ 5d”或“啊”。我只是想念这张发牌的部分，我很有信心我将要获得解决方案，它是基于评论者在我上一篇文章中所建议的地图解决方案的。我在TheFrame类中遇到一些错误，cardDisplay方法中的“ cards”“无法解析为变量”。同样，在paintComponent方法中，“图像”也“无法解析为变量”。另外，在我的Game类中，在我的drawCards方法下，它说cardDisplay“对于TheFrame类型未定义”。我将以下4个课程放在下面，以更好地说明发生了什么：
卡-
package uk.ac.aber.dcs.cs12320.cards;
public class Card {
public String number;
public String suit;
public Card(String n, String s) {
number = n;
suit = s;
}
@Override
public String toString() {
return number + suit;
}
}游戏 -
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;
import uk.ac.aber.dcs.cs12320.cards.Card;
import uk.ac.aber.dcs.cs12320.cards.gui.TheFrame;
public class Game {
private Scanner scan;
private Deck deck;
private TheFrame frame;
private ArrayList<Card> onTable = new ArrayList<Card>();
public Game() {
frame = new TheFrame();
deck = new Deck();
try {
deck.buildDeck();
} catch (IOException e) {
System.err.println("Error reading in deck...");
System.exit(-1);
}
}
private void runMenu() throws IOException {
String response;
do {
printMenu();
System.out.println("What would you like to do:");
scan = new Scanner(System.in);
response = scan.nextLine().toUpperCase();
switch (response) {
case "1":
PrintDeck();
break;
case "2":
ShuffleCards();
break;
case "3":
DealCard();
break;
case "4":
MoveToPrevious();
break;
case "5":
Move2PilesBack();
break;
case "6":
AmalgamateInMiddle();
break;
case "7":
PlayforMe();
break;
case "8":
ShowLowScores();
case "Q":
break;
default:
System.out.println("Try again");
}
drawCards();
} while (!(response.equals("Q")));
}
private void ShowLowScores() {
// TODO Auto-generated method stub
}
private void PlayforMe() {
// TODO Auto-generated method stub
}
private void AmalgamateInMiddle() {
// TODO Auto-generated method stub
}
private void Move2PilesBack() {
// TODO Auto-generated method stub
}
private void MoveToPrevious() {
// TODO Auto-generated method stub
}
private void DealCard() {
Card c = deck.removeTopCard();
System.out.println(c);
}
private void ShuffleCards() {
deck.shuffle();
}
private void drawCards() {
ArrayList<String> visibleCards = new ArrayList<String>();
for (Card card : onTable) {
visibleCards.add(card.number + card.suit + ".gif");
}
frame.cardDisplay(visibleCards);
}
private void PrintDeck() throws IOException {
for (Card card : deck.getDeck()) {
System.out.println(card);
}
}
private void printMenu() {
System.out.println("1 - Print the pack ");
System.out.println("2 - Shuffle");
System.out.println("3 - Deal a card");
System.out.println("4 - Move last pile onto previous one");
System.out.println("5 - Move last pile back over two piles");
System.out.println("6 - Amalgamate piles in the middle");
System.out.println("7 - Play for me");
System.out.println("8 - Show low scores");
System.out.println("q - Quit");
}
public static void main(String args[]) throws IOException {
System.out.println("****Welcome to patience is virtue****");
Game cardsgame = new Game();
cardsgame.runMenu();
System.out.println("****Thanks for playing****");
}
}甲板-
import java.util.Collections;
import java.util.List;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.ArrayList;
import uk.ac.aber.dcs.cs12320.cards.Card;
public class Deck {
private ArrayList<Card> cards;
public Deck() {
cards = new ArrayList<Card>();
}
public void buildDeck() throws IOException {
List<String> cardLines = Files.readAllLines(Paths.get("cards.txt"));
for (int i = 0; i < cardLines.size(); i += 2) {
// System.out.println()
cards.add(new Card(cardLines.get(i), cardLines.get(i + 1)));
}
}
public Card removeTopCard() {
return cards.remove(0);
}
public List<Card> getDeck() {
return cards;
}
public void shuffle() {
Collections.shuffle(cards);
System.out.println(cards);
}
}框架-
package uk.ac.aber.dcs.cs12320.cards.gui;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import javax.swing.JFrame;
import javax.swing.JPanel;
import uk.ac.aber.dcs.cs12320.cards.Card;
public class TheFrame extends JFrame {
public static boolean paintComponent;
private ThePanel canvas;
/**
* The constructor creates a Frame ready to display the cards
*/
public TheFrame() {
// Calls the constructor in the JFrame superclass passing up the name to
// display in the title
super("Becky's Patience");
// When you click on the close window button the window will be closed
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// This has North, East, South, West and Center positions for components
setLayout(new BorderLayout());
// This is what we will draw on (see the inner class below)
canvas = new ThePanel(null);
setSize(700, 300);
this.add(canvas, BorderLayout.CENTER);
setVisible(true); // Display the window
}
/**
* Displays all cards
*
* @param cards
* an arraylist of strings of the form 3h.gif for 3 of hearts
*/
/*public void cardDisplay(ArrayList<String> cards) {
canvas.cardDisplay(cards);
}*/
/**
* Call before cardDisplay at end of game (takes away the unused pile)
*/
public void allDone() {
canvas.allDone();
}
// /////////////////////////////////////////////////
/*
* This is an example of an inner class (like Russian dolls)
* It private so can only be seen by the outer class. It's part
* of the implementation of TheFrame. Because it extends JPanel we
* can draw on it
*/
Map<Card, Image> loadCards(ArrayList<Card> cards)
{
Map<Card, Image> cardImages = new HashMap<>();
for (Card card : cards)
{
String file = "cards/" + card.number + card.suit + ".gif";
Image image = Toolkit.getDefaultToolkit().getImage(file);
cardImages.put(card, image);
}
return cardImages;
}
private class ThePanel extends JPanel {
private Map<Card, Image> cardImages;
private ArrayList<Card> currentCardDisplayed;
private boolean done;
private ThePanel(ArrayList<Card> cards) {
setBackground(Color.cyan);
done = false;
cardImages = loadCards(cards);
}
private void cardDisplay(ArrayList<String> c) {
cards = c;
repaint();
}
private void allDone() {
done = true;
}
/**
* This is called automatically by Java when it want to draw this panel.
* So we have to put our drawing command in here.
* @param g Is the graphics object on which we draw.
*/
@Override
public void paintComponent(Graphics g) {
// Always do this. It's giving the JPanel superclass a change to
// paint its parts before we paint ours. E.g. we don't draw the
// edge of the window, one of the super-classes does that.
super.paintComponent(g);
int x = 20;
int y = 50;
// Loop through all the cards get each image in turn
for (Card card: currentCardDisplayed) {
g.drawImage(cardImages.get(card), x, y, 70, 100, this);
x += 72; // The x position is moved on in order to position the next card
// This could be improved by having a horizontal scroll bar
}
if (!done) {
// Draws the face-down top card of our pack of cards
String file = "cards/b.gif";
image = Toolkit.getDefaultToolkit().getImage(file);
g.drawImage(image, 100, 152, 70, 100, this);
}
}
} // ThePanel inner class这是我要从中映射gif的地方：
这是当我在GUI中按案例3来发卡时当前发生的情况（但是由于错误，当前未运行）：
感谢您为修复当前存在的错误提供的帮助，相信我已经接近一种基于已处理的GUI卡在框架上显示卡的解决方案。
最佳答案
这看起来很像作业……所以我将答案保持概念化。
基本上，您具有要从中删除卡片的卡片组，并且应用程序的其他部分可以在发生该事件时做出响应。通常有两种模式可以处理这种情况。
您可以使用消息传递框架，其中DealCard除去顶部的卡，然后将消息发布到某种总线上，然后让每个想要了解此消息的人：这是绘制的卡。然后，您将拥有TheFrame和其他可通过控制台处理的东西来处理卡。我假设这是一项家庭作业，所以可能有点过头了……如果不是，这是我喜欢的消息传递库（奖金在Android：http://square.github.io/otto/上很好用）
您可能想要做的另一件事是创建一个类似
public interface CardDrawnListener {
void onCardDrawn(final Card card);
}
然后让您的牌组记录
List<CardDrawnListeners>。然后，您需要在框架中添加一个新的CardDrawnListener和一些可以处理控制台的内容（您可以像使用它那样直接进行内联）。现在，您的
TheFrame会知道何时从卡组中抽出一张牌，并可以用它进行任何操作。使用这种模式时，请务必小心，不要在很多地方复制状态（跟踪卡中有哪些卡）... Deck是知道哪些卡在卡中以及哪些不在卡中的地方。编译错误问题：
TheFrame类中的错误，cardDisplay方法中的“ cards”“无法解析为变量”
变量
cards是传递给ThePanel的参数，并且不会在任何位置存储为成员变量...我假设您要么想拥有一个成员变量（private List<String> cards上的ThePanel，要么不想存储该状态...）在paintComponent方法中，“图像”也“无法解析为变量”
没有变量
image，因此您只需要在其中定义一个局部变量。应该像更改一样容易：image = Toolkit.getDefaultToolkit().getImage(file);
至
Image image = Toolkit.getDefaultToolkit().getImage(file);
在我的游戏类中，在我的drawCards方法下，它说cardDisplay“未为TheFrame类型定义”
就是说，您正在尝试在
cardDisplay对象上调用方法TheFrame，但这不是该对象上的方法。因此，您应该进入TheFrame并创建一个名为cardDisplay的方法。该方法可能只想调用ThePanel的cardDisplay方法。