【发布时间】：2018-05-05 15:20:21
【问题描述】：
我正在尝试在 JavaFX 中制作基本的 GUI 记分牌，但在程序中遇到错误。
package application;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
public class Counter extends Application {
public int P1_Score = 0;
public int P2_Score = 0;
public static void main(String[] args) {
launch(args);
}
@Override
public void start(Stage primaryStage) {
// vertical box
VBox vertBox = new VBox();
vertBox.setPrefSize(400, 400);
vertBox.setAlignment(Pos.CENTER);
// horizontal box for the players
HBox PlayerName = new HBox();
PlayerName.setAlignment(Pos.CENTER);
PlayerName.setPadding(new Insets(25, 25, 25, 25));
// horizontal box for the scores
HBox Score = new HBox();
Score.setAlignment(Pos.CENTER);
// horizontal box to show a goal
HBox Goal = new HBox();
Goal.setAlignment(Pos.CENTER);
// player1 name
Label team1 = new Label("Player 1");
team1.setTextFill(Color.RED);
team1.setAlignment(Pos.TOP_LEFT);
team1.setPadding(new Insets(25, 25, 25, 25));
// player2 name
Label team2 = new Label("Player 2");
team2.setTextFill(Color.BLUE);
team2.setAlignment(Pos.TOP_RIGHT);
team2.setPadding(new Insets(25, 25, 25, 25));
// player1 score
Label text1 = new Label();
text1.setAlignment(Pos.CENTER_LEFT);
text1.setText(Integer.toString(P1_Score));
text1.setPadding(new Insets(25, 30, 50, 25));
// player2 score
Label text2 = new Label();
text2.setAlignment(Pos.CENTER_RIGHT);
text2.setText(Integer.toString(P2_Score));
text2.setPadding(new Insets(25, 30, 50, 25));
// player1 goal
Button btn1 = new Button("Player 1 score");
btn1.setAlignment(Pos.BOTTOM_LEFT);
btn1.setPadding(new Insets(10, 10, 10, 10));
// player2 goal
Button btn2 = new Button("Player 2 score");
btn2.setPadding(new Insets(10, 10, 10, 10));
btn2.setAlignment(Pos.BOTTOM_RIGHT);
// event for player1 goal
btn1.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent arg0) {
// increase score
P1_Score = P1_Score + 1;
// display player1 score
text1.setText(Integer.toString(P1_Score));
if (P1_Score == 3) {
resetScore(text1, text2);
}
}
});
// event for player2 goal
btn2.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent arg0) {
// increase player2 score
P2_Score = P2_Score + 1;
// display score
text2.setText(Integer.toString(P2_Score));
if (P2_Score == 3) {
resetScore(text1, text2);
}
}
});
PlayerName.getChildren().addAll(team1, team2);
Score.getChildren().addAll(text1, text2);
Goal.getChildren().addAll(btn1, btn2);
vertBox.getChildren().addAll(PlayerName, Score, Goal);
primaryStage.setTitle("Counter");
Scene scene = new Scene(vertBox);
primaryStage.setScene(scene);
primaryStage.show();
}
private void resetScore(Label text1, Label text2) {
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
e.printStackTrace();
}
P1_Score = 0;
P2_Score = 0;
text1.setText(Integer.toString(P1_Score));
text2.setText(Integer.toString(P2_Score));
}
}
该代码应该是一个基本记分牌的模拟。当任一球员进三球时，计分板模拟应显示最终比分两秒钟，然后重置为 0-0。
目前，当分数等于 3 时程序会冻结，但分数不会更新。如果比分是 2-1，球员 1 有两个进球并且他们进了第三个球，屏幕会冻结在 2-1 并重置。如何让比分显示第三个进球然后重置。谢谢。
【问题讨论】：