我的问题已得到解答，我的问题已解决。我已经用我的最终解决方案更新了该线程
我正在做这个学校作业（测验程序），最初我们只是需要做一个纯粹的基于文本的控制台游戏，但是我想挑战自己并尝试用JavaFX创建它，而我们才刚刚开始了解。
这是一个基于回合的问答游戏，玩家将被问到一个问题，要求他/她通过两个按钮（“真”或“假”按钮）回答是非题
游戏流程：
我正在运行一个for循环，只要ArrayList中还有问题，该循环就会继续。
理想的流程如下：
0）输入名称，然后按：开始游戏按钮 1）向玩家1提出问题。 2）通过“真”按钮或“假”按钮接收输入。 3）将输入与从数组中提取的正确答案进行比较。 4）如果正确，则用户获得1分-如果错误，则继续进入玩家2。 5）切换到第二个播放器，然后重新开始，直到ArrayList中没有其他问题为止。
正在做什么 从某种意义上说，我已经实现了“正常运行”的循环，它改变了播放器并一直持续到ArrayList中没有其他问题为止。
问题 我希望for循环通过true / false按钮等待用户输入。 但是，for循环无需等待输入即可运行整个程序。
问题 是否可以“暂停” for循环并等待两个按钮之一的输入？ 您还有其他建议我解决这个问题的方法吗？
如果您愿意直接解决这个问题，我将非常高兴。不管是通过这个论坛还是给我发送进一步阅读的链接都是可以的。我似乎无法通过谷歌搜索或搜索此论坛来找到解决方案。
该代码充满了System.out.println（），以供我查看程序运行的距离。请远离这个地方。
也...关于如何改进代码的任何建议将不胜感激。 Java编程仅用了8周的时间，很想学习如何做得更聪明。
主要代码
package sample;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class Main extends Application {
@Override
public void start(Stage primaryStage) throws Exception{
Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
primaryStage.setTitle("Expert Quiz Game");
primaryStage.setScene(new Scene(root, 800, 600));
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
控制器代码
package sample;
import java.net.URL;
import java.util.ArrayList;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.scene.text.Text;
import java.util.Random;
public class Controller {
@FXML
TextField player1;
@FXML
TextField player2;
@FXML
Text score1;
@FXML
Text score2;
@FXML
Text questionText;
@FXML
Text questionsLeft;
@FXML
Text gameStatus;
@FXML
Button startGame;
@FXML
Button buttonTrue;
@FXML
Button buttonFalse;
//@FXML
//Button nextRound;
@FXML
private void handleStartGame(ActionEvent event) {
// ******* DECLARE VARIABLES ********
String playerOneName = player1.getText(); //Saves the name for later use
String playerTwoName = player2.getText(); //Saves the name for later use
int playerOneScore = 0;
int playerTwoScore = 0;
Random randomQuestionNumber1 = new Random();
//Random randomQuestionNumber2 = new Random();
System.out.println(playerOneName + " TEST"); //To TEST if the name is saved
System.out.println(playerTwoName + " TEST"); //To TEST if the name is saved
// ******* DECLARE QUESTION ARRAY ********
ArrayList<String> questionsArray = new ArrayList<String>();
questionsArray.add("Question 1");
questionsArray.add("Question 2");
questionsArray.add("Question 3");
questionsArray.add("Question 4");
questionsArray.add("Question 5");
questionsArray.add("Question 6");
// ******* DECLARE ANSWER ARRAY ********
ArrayList<String> answerArray = new ArrayList<String>();
answerArray.add("True");
answerArray.add("True");
answerArray.add("False");
answerArray.add("True");
answerArray.add("False");
answerArray.add("True");
//int randomQuestionA = randomQuestionNumber1.nextInt(questionsArray.size()); //+0
//int randomQuestionB = randomQuestionNumber2.nextInt(questionsArray.size()); //+0
//Button clickedButton = (Button) event.getTarget();
//String buttonLabel = clickedButton.getText();
int player = 1;
for (int i = 0; i < questionsArray.size(); i++) {
if (player == 1) {
int randomQuestionA = randomQuestionNumber1.nextInt(questionsArray.size());
// ****** RETRIEVE AND PRESENT FIRST QUESTION ******
System.out.println("1. Player: " + playerOneName); // WRITE TO CONSOLE THE CURRENT PLAYER * CAN BE REMOVED
questionText.setText("Question: " + questionsArray.get(randomQuestionA)); // PRINTS QUESTION TO THE UI
System.out.println("2. "+questionsArray.get(randomQuestionA)); // WRITES TO CONSOLE THE QUESTION * CAN BE REMOVED
// ****** GET ANSWER FOR THE QUESTION ******
String answerFromArray = answerArray.get(randomQuestionA); // TAKES THE ANSWER FROM THE ARRAY AND SAVES AS A NEW STRING
System.out.println("3." + answerArray.get(randomQuestionA)); // WRITES THE ANSWER FROM THE ARRAY TO CONSOLE * CAN BE REMOVED
// ****** TEST IF ANSWER IS TRUE ******
String buttonTrueText = buttonTrue.getText(); // SAVES THE BUTTON TEXT AS A STRING FOR LATER COMPARISON
String buttonFalseText = buttonFalse.getText(); // SAVES THE BUTTON TEXT AS A STRING FOR LATER COMPARISON
// ****** IF TRUE, THEN COUNT ONE UP IN SCORE ******
buttonTrue.setOnAction(e -> {
System.out.println("4. Now running"); // WRITES TO CONSOLE * CAN BE REMOVED
String buttonAnswer = " "; // INITIALIZES THE VARIABLE WITH AN EMPTY STRING
handleButtonAnswer(event);
/**if (buttonText.equals("True")) { // REGISTERS THE BUTTON PRESSED AND SAVES IT IN A VARIABLE
buttonAnswer = "True";
} else if (buttonText.equals("False")) { // REGISTERS THE BUTTON PRESSED AND SAVES IT IN A VARIABLE
buttonAnswer = "False";
}**/
if (buttonAnswer == "True" || buttonAnswer == "False") {
System.out.println("5. Test");
}
System.out.println("6. "+buttonAnswer);
if (answerFromArray.equals(buttonAnswer)) {
System.out.println("7. Answer was correct - Need to count one up in score");//
}
score1.setText("Points: " + playerOneScore+1);
System.out.println("8. "+playerOneScore+1);
questionsArray.remove(randomQuestionA); // REMOVES QUESTION FROM ARRAYLIST
answerArray.remove(randomQuestionA); // REMOVES ANSWER FROM ARRAYLIST
int remainingQuestions = questionsArray.size();
questionsLeft.setText(remainingQuestions + " questions left");
});
// ****** REMOVE THAT QUESTION + ANSWER FROM THE ARRAY ******
// ****** CHANGE PLAYER AND START AGAIN ******
player = 2;
System.out.println("Changing to player " +player);
} else if (player == 2) {
//clickedButton.setText("O");
int randomQuestionA = randomQuestionNumber1.nextInt(questionsArray.size());
// ****** RETRIEVE AND PRESENT FIRST QUESTION ******
System.out.println("1. Player: " + playerOneName); // WRITE TO CONSOLE THE CURRENT PLAYER * CAN BE REMOVED
questionText.setText("Question: " + questionsArray.get(randomQuestionA)); // PRINTS QUESTION TO THE UI
System.out.println("2. "+questionsArray.get(randomQuestionA)); // WRITES TO CONSOLE THE QUESTION * CAN BE REMOVED
// ****** GET ANSWER FOR THE QUESTION ******
String answerFromArray = answerArray.get(randomQuestionA); // TAKES THE ANSWER FROM THE ARRAY AND SAVES AS A NEW STRING
System.out.println("3." + answerArray.get(randomQuestionA)); // WRITES THE ANSWER FROM THE ARRAY TO CONSOLE * CAN BE REMOVED
// ****** TEST IF ANSWER IS TRUE ******
String buttonTrueText = buttonTrue.getText(); // SAVES THE BUTTON TEXT AS A STRING FOR LATER COMPARISON
String buttonFalseText = buttonFalse.getText(); // SAVES THE BUTTON TEXT AS A STRING FOR LATER COMPARISON
// ****** IF TRUE, THEN COUNT ONE UP IN SCORE ******
buttonTrue.setOnAction(e -> {
System.out.println("4. Now running"); // WRITES TO CONSOLE * CAN BE REMOVED
String buttonAnswer = " "; // INITIALIZES THE VARIABLE WITH AN EMPTY STRING
handleButtonAnswer(event);
/**if (buttonText.equals("True")) { // REGISTERS THE BUTTON PRESSED AND SAVES IT IN A VARIABLE
buttonAnswer = "True";
} else if (buttonText.equals("False")) { // REGISTERS THE BUTTON PRESSED AND SAVES IT IN A VARIABLE
buttonAnswer = "False";
}**/
if (buttonAnswer == "True" || buttonAnswer == "False") {
System.out.println("5. Test");
}
System.out.println("6. "+buttonAnswer);
if (answerFromArray.equals(buttonAnswer)) {
System.out.println("7. Answer was correct - Need to count one up in score");//
}
score1.setText("Points: " + playerOneScore+1);
System.out.println("8. "+playerOneScore+1);
questionsArray.remove(randomQuestionA); // REMOVES QUESTION FROM ARRAYLIST
answerArray.remove(randomQuestionA); // REMOVES ANSWER FROM ARRAYLIST
int remainingQuestions = questionsArray.size();
questionsLeft.setText(remainingQuestions + " questions left");
});
// ****** REMOVE THAT QUESTION + ANSWER FROM THE ARRAY ******
// ****** CHANGE PLAYER AND START AGAIN ******
player = 1;
System.out.println("Changing to player " +player);
}
}
}
@FXML
private String handleButtonAnswer(ActionEvent event) {
String buttonAnswer = "";
// (1)
Button b = (Button) event.getSource();
// (2)
String t = b.getText();
System.out.println("4. the text on the button was: "+t);
if (t.equals("True")){
buttonAnswer = "True"; // demo
}else if (t.equals("False")){
buttonAnswer = "False";
}
return buttonAnswer;
}
}
fxml代码
设计未完成-在正确设置样式之前需要使其工作
<?xml version="1.0" encoding="UTF-8"?><?import javafx.scene.text.*?>
<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="600.0" prefWidth="794.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.Controller">
<children>
<Label layoutX="225.0" layoutY="47.0" prefHeight="66.0" prefWidth="334.0" text="Java ExpertQuiz" textAlignment="CENTER">
<font>
<Font name="Cambria Bold" size="45.0" />
</font>
</Label>
<TextField fx:id="player1" layoutX="79.0" layoutY="154.0" prefHeight="39.0" prefWidth="201.0" promptText="Enter name for player1" />
<TextField fx:id="player2" layoutX="503.0" layoutY="154.0" prefHeight="39.0" prefWidth="222.0" promptText="Enter name for player2" />
<Text fx:id="score1" layoutX="79.0" layoutY="232.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Ponits" />
<Text fx:id="score2" layoutX="503.0" layoutY="232.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Points" />
<Text fx:id="questionText" layoutX="38.0" layoutY="315.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Question" textAlignment="CENTER" wrappingWidth="717.1240234375">
<font>
<Font size="38.0" />
</font>
</Text>
<Button fx:id="startGame" layoutX="318.0" layoutY="154.0" mnemonicParsing="false" onAction="#handleStartGame" text="Start game" />
<Text fx:id="questionsLeft" layoutX="301.0" layoutY="505.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Questions left: " textAlignment="CENTER" wrappingWidth="191.9072265625" />
<Text fx:id="gameStatus" layoutX="320.0" layoutY="547.0" strokeType="OUTSIDE" strokeWidth="0.0" text="The winner is:" />
<Button fx:id="buttonTrue" layoutX="150.0" layoutY="390.0" mnemonicParsing="false" onAction="#handleButtonAnswer" text="True" />
<Button fx:id="buttonFalse" layoutX="582.0" layoutY="390.0" mnemonicParsing="false" onAction="#handleButtonAnswer" text="False" />
</children>
</AnchorPane>
一切正常-这是我的最终解决方案
package sample;
import java.net.URL;
import java.util.*;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.scene.text.Text;
public class Controller {
@FXML
TextField player1;
@FXML
TextField player2;
@FXML
Text score1;
@FXML
Text score2;
@FXML
Text statusText;
@FXML
Text questionsLeft;
@FXML
Text currentPlayer;
@FXML
Button startGame;
@FXML
Button buttonTrue;
@FXML
Button buttonFalse;
@FXML
Button nextRound;
private ArrayList<String> questionsArray = new ArrayList<String>();
private ArrayList<String> answerArray = new ArrayList<String>();
private int player = 0;
private int remainingQuestions = 0;
private int playerOneScore;
private int playerTwoScore;
private String playerOneName = "";
private String playerTwoName = "";
private String answerFromArray = "";
private String answerButtonText = "";
private Random randomQuestionNumber = new Random();
private int randomQuestion = 0;
@FXML
private void handleStartGame(ActionEvent event) {
// ******* DECLARE VARIABLES ********
playerOneName = player1.getText(); //Saves the name for later use
playerTwoName = player2.getText(); //Saves the name for later use
score1.setText(playerOneName+ " has: 0 points;");
score2.setText(playerTwoName+ " has: 0 points;");
playerOneScore = 0;
playerTwoScore = 0;
System.out.println(playerOneName + " TEST"); //To TEST if the name is saved
System.out.println(playerTwoName + " TEST"); //To TEST if the name is saved
// ******* DECLARE QUESTION ARRAY ********
questionsArray.add("Question 1");
questionsArray.add("Question 2");
questionsArray.add("Question 3");
questionsArray.add("Question 4");
questionsArray.add("Question 5");
questionsArray.add("Question 6");
// ******* DECLARE ANSWER ARRAY ********
answerArray.add("True");
answerArray.add("True");
answerArray.add("False");
answerArray.add("True");
answerArray.add("False");
answerArray.add("True");
// ******* THIS IS THE PLAYER STARTING THE ROUND ******
player = 1;
// ****** RETRIEVE AND PRESENT FIRST QUESTION - THIS WILL ONLY BE USED TO START THE PROGRAM ******
randomQuestion = randomQuestionNumber.nextInt(questionsArray.size()); // GENERATES A RANDOM NUMBER TO PICK A RANDOM QUESTION FROM ARRAYLIST
statusText.setText("Question: " + questionsArray.get(randomQuestion)); // PRINTS THE RANDOM QUESTION TO THE UI
currentPlayer.setText("Current Player: "+playerOneName);
buttonFalse.setDisable(false);
buttonTrue.setDisable(false);
startGame.setDisable(true);
}
@FXML
private void handleButtonAnswer(ActionEvent event) {
Button answerButtonClicked = (Button) event.getSource();
answerButtonText = answerButtonClicked.getText();
answerFromArray = answerArray.get(randomQuestion); // PICKS THE ANSWER MATCHING THE QUESTION GENERATED BY THE RANDOM NUMBER
if (answerFromArray.equals(answerButtonText)) {
statusText.setText("Answer was correct! You've been awarded 1 point");
if(player == 1){
playerOneScore = playerOneScore+1;
score1.setText(playerOneName+ " has: "+playerOneScore+" points;");
}else if(player == 2){
playerTwoScore = playerTwoScore+1;
score2.setText(playerTwoName+ " has: "+playerTwoScore+" points;");
}
}else{
statusText.setText("Answer was incorrect! No point was given.");
}
nextRound.setDisable(false);
buttonFalse.setDisable(true);
buttonTrue.setDisable(true);
}
@FXML
private void handleButtonNext(ActionEvent event) {
if(player == 1){
player = 2;
currentPlayer.setText("Current Player: "+playerTwoName);
}else if(player == 2){
player = 1;
currentPlayer.setText("Current Player: "+playerOneName);
}
questionsArray.remove(randomQuestion); // REMOVES QUESTION FROM ARRAYLIST
answerArray.remove(randomQuestion); // REMOVES ANSWER FROM ARRAYLIST
remainingQuestions = questionsArray.size();
questionsLeft.setText(remainingQuestions + " questions left");
if(questionsArray.size()!=0){
randomQuestion = randomQuestionNumber.nextInt(questionsArray.size());
statusText.setText("Question: " + questionsArray.get(randomQuestion)); // PRINTS QUESTION TO THE UI
}else{
if(playerOneScore>playerTwoScore){
questionsLeft.setText("Game is over. The winner is: "+playerOneName);
}else if(playerTwoScore>playerOneScore){
questionsLeft.setText("Game is over. The winner is: "+playerTwoName);
}else{
questionsLeft.setText("The game ended in a DRAW. ");
}
startGame.setDisable(false);
buttonFalse.setDisable(true);
buttonTrue.setDisable(true);
}
nextRound.setDisable(true);
buttonFalse.setDisable(false);
buttonTrue.setDisable(false);
}
}
fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.text.*?>
<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="600.0" prefWidth="800.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.Controller">
<children>
<Label layoutX="233.0" layoutY="46.0" prefHeight="66.0" prefWidth="334.0" text="Java ExpertQuiz" textAlignment="CENTER">
<font>
<Font name="Cambria Bold" size="45.0" />
</font>
</Label>
<TextField fx:id="player1" layoutX="79.0" layoutY="154.0" opacity="0.5" prefHeight="39.0" prefWidth="201.0" promptText="Enter name for player 1" />
<TextField fx:id="player2" layoutX="503.0" layoutY="154.0" opacity="0.5" prefHeight="39.0" prefWidth="222.0" promptText="Enter name for player 2" />
<Text fx:id="score1" layoutX="114.0" layoutY="224.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Player 1 has: 0 points" />
<Text fx:id="score2" layoutX="558.0" layoutY="224.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Player 2 has: 0 points" />
<Text fx:id="statusText" layoutX="41.0" layoutY="315.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Question" textAlignment="CENTER" wrappingWidth="717.1240234375">
<font>
<Font size="38.0" />
</font>
</Text>
<Button fx:id="startGame" layoutX="363.0" layoutY="161.0" mnemonicParsing="false" onAction="#handleStartGame" text="Start game" />
<Text fx:id="questionsLeft" layoutX="304.0" layoutY="473.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Questions left: " textAlignment="CENTER" wrappingWidth="191.9072265625">
<font>
<Font size="18.0" />
</font></Text>
<Button fx:id="buttonTrue" disable="true" layoutX="150.0" layoutY="378.0" mnemonicParsing="false" onAction="#handleButtonAnswer" text="True" />
<Button fx:id="buttonFalse" disable="true" layoutX="592.0" layoutY="378.0" mnemonicParsing="false" onAction="#handleButtonAnswer" text="False" />
<Button fx:id="nextRound" disable="true" layoutX="354.0" layoutY="378.0" mnemonicParsing="false" onAction="#handleButtonNext" text="Next Question" />
<Text fx:id="currentPlayer" layoutX="355.0" layoutY="260.0" strokeType="OUTSIDE" strokeWidth="0.0" text="Current player:">
<font>
<Font size="14.0" />
</font>
</Text>
</children>
答案 0 :(得分：1)
您可以将循环设为一个单独的函数，然后在放置按钮时调用它，而不是将其视为暂停循环。在这种情况下，它不再是循环，它只需要将循环的索引存储为函数外部的变量，或者可以将索引作为参数调用函数。我认为您的整个handleStartGame可以进一步细分。一个好的经验法则是，一个功能应该执行一项特定的任务，这将使程序的后续操作变得更加容易。如果您对此有任何疑问，请随时发表评论！