0 
//ADDING BET FIELDS
setLayout(null); 
horseChoice = new JTextField();
horseChoice.setBounds(200, 585, 300, 20);
add(horseChoice);

setLayout(null); 
horseBet = new JTextField();
horseBet.setBounds(200, 625, 300, 20);
add(horseBet);

//ADDING BET BUTTON
setLayout(null); 
bet = new JButton("Place Bet");
bet.setBounds(250, 675, 200, 50);
add(bet);

我正在尝试创建两个文本字段，用户可以在其中输入他们想要的内容和一个按钮来将他们的输入保存到变量中。但是当我运行我的程序时，文本字段和按钮会闪烁然后变得不可见。然后，如果用户单击它们，它们会再次闪烁。我该如何阻止这种情况发生？

其余的课程：

// the "main" function
public void run(){

    init();



            font = new Font ("Arial", Font.BOLD, 14);
            titleFont = new Font ("Comic Sans MS", Font.BOLD, 20);
    textColor = new Color(100, 100, 100);
            resultColor = new Color(255, 165, 0, 180);

            //ADDING HORSES
            horse1 = new Horses_1();
            horse2 = new Horses_2();
            horse3 = new Horses_3();
            horse4 = new Horses_4();



    //GAMELOOP
    while (running){

        start = System.nanoTime();

        elapsed = System.nanoTime() - start;

        wait = targetTime - elapsed / 1000000;

        try{

            Thread.sleep(wait);

        }
        catch(Exception e){
            e.printStackTrace();
        }

                    //TIMER
                    if(horse1.h1x < 1350){
                        horse1Time++;
                    }
                    if(horse2.h2x < 1350){
                        horse2Time++;
                    }
                    if(horse3.h3x < 1350){
                        horse3Time++;
                    }
                    if(horse4.h4x < 1350){
                        horse4Time++;
                    }

                    //STOP RACING TIMERS
                    if(horse1Result == true && horse1.h1x >= 1350){
                        horse1TimeStr = horse1Time + ", Dominic";
                        horse1Result = false;
                    }
                    if(horse2Result == true && horse2.h2x >= 1350){
                        horse2TimeStr = horse2Time + ", Charlie";
                        horse2Result = false;
                    }
                    if(horse3Result == true && horse3.h3x >= 1350){
                        horse3TimeStr = horse3Time + ", Admiral";
                        horse3Result = false;
                    }
                    if(horse4Result == true && horse4.h4x >= 1350){
                        horse4TimeStr = horse4Time + ", Bacardi";
                        horse4Result = false;
                    }


                    //RANDOM HORSE CHOICE & MOVE PLACES
                    if(horse1.h1x >= 1350){
                        final int[] CHOICES = { 2,3,4 };

                    }
                    else if(horse2.h2x >= 1350){
                        final int[] CHOICES = { 1,3,4 };
                    }
                    else if(horse3.h3x >= 1350){
                        final int[] CHOICES = { 1,2,4 };
                    }
                    else if(horse4.h4x >= 1350){
                        final int[] CHOICES = { 1,2,3 };
                    }
                    else{
                        final int[] CHOICES = { 1,2,3,4 };
                    }

                    randomHorse = CHOICES[rand.nextInt(CHOICES.length)];
                    randomMove = rand.nextInt(35) + 1;

                    //PLACES
        Update();
        Draw();
        drawToScreen();
    }

}




// updates the game
private void Update() {


        //UPDATE RACE COUNTER
        if(horse1.h1x == 100 && horse2.h2x == 100 && horse3.h3x == 100 && horse4.h4x == 100){
            races++;
        }

        //HORSE UPDATE


        horse1.Update();
        horse2.Update();
        horse3.Update();
        horse4.Update();

        //RESULT SETTING
        if(result == true && horse1Result == false && horse2Result == false && horse3Result == false && horse4Result == false){


            String[] horses =
                { horse1TimeStr, horse2TimeStr, horse3TimeStr, horse4TimeStr };

            Arrays.sort(horses);
            firstHorse = horses[0];
            secondHorse = horses[1];
            thirdHorse = horses[2];
            fourthHorse = horses[3];

            firstHorse = firstHorse.replaceAll("[0-9,,]","");
            secondHorse = secondHorse.replaceAll("[0-9,,]","");
            thirdHorse = thirdHorse.replaceAll("[0-9,,]","");
            fourthHorse = fourthHorse.replaceAll("[0-9,,]","");

            result = false;

        }





}

// draws the game onto an off-screen buffered image
private void Draw() {   

            //BACKGROUND COLOUR
    g.setColor(Color.WHITE);
    g.fillRect(0, 0, WIDTH, HEIGHT);

            if(button == true){
                //ADDING BET FIELDS
                setLayout(null); 
                horseChoice = new JTextField();
                horseChoice.setBounds(200, 585, 300, 20);
                add(horseChoice);

                setLayout(null); 
                horseBet = new JTextField();
                horseBet.setBounds(200, 625, 300, 20);
                add(horseBet);

                //ADDING BET BUTTON
                setLayout(null); 
                bet = new JButton("Place Bet");
                bet.setBounds(250, 675, 200, 50);
                add(bet);

                button = false;
            }


            horse1.Draw(g);
            horse2.Draw(g);
            horse3.Draw(g);
            horse4.Draw(g);

            //HORSE 1 - TRACK
            g.setColor(new Color (255, 0, 0));
            g.drawLine(100, 125, WIDTH - 100, 125);

            //HORSE 2 - TRACK
            g.setColor(new Color (0, 255, 0));
            g.drawLine(100, 225, WIDTH - 100, 225);

            //HORSE 3 - TRACK
            g.setColor(new Color (0, 0, 255));
            g.drawLine(100, 325, WIDTH - 100, 325);

            //HORSE 4 - TRACK
            g.setColor(new Color (255, 255, 0));
            g.drawLine(100, 425, WIDTH - 100, 425);  

            //FINISH LINE
            g.setColor(new Color (255, 255, 0));
            g.drawLine(WIDTH - 100, 475, WIDTH - 100, 375);

            g.setColor(new Color (0, 0, 255));
            g.drawLine(WIDTH - 100, 275, WIDTH - 100, 375);

            g.setColor(new Color (0, 255, 0));
            g.drawLine(WIDTH - 100, 175, WIDTH - 100, 275);

            g.setColor(new Color (255, 0, 0));
            g.drawLine(WIDTH - 100, 75, WIDTH - 100, 175);

            //HUD
            g.setColor(new Color (180, 180, 180));
            g.drawLine(50, 550, WIDTH - 50, 550);
            g.drawLine(550, 550, 550, 700);
            g.drawLine(900, 550, 900, 700);

            g.setColor(resultColor);
            g.setFont(titleFont);
            g.drawString("Results", 700, 540);
            g.drawString("Details", 1000, 540);
            g.drawString("Betting", 360, 540);

            //Results
            g.setColor(textColor);
    g.setFont(font);
            g.drawString("Winner : ", 600, 600);
            g.drawString("Second : ", 600, 630);
            g.drawString("Third : ", 600, 660);
            g.drawString("Fourth : ", 600, 690);

            //DETAILS
            g.drawString("Race Number :", 950, 600);
            g.drawString("Horse Choice :", 950, 630);
            g.drawString("Bet :", 950, 660);

            g.setColor(resultColor);
            g.drawString("" + races, 1250, 600);

            //BETS
            g.setColor(textColor);
            g.drawString("Horse Choice :", 75, 600);
            g.drawString("Bet :", 75, 640);


            if(horse1Result == false && horse2Result == false && horse3Result == false && horse4Result == false){
                g.setColor(resultColor);
                g.drawString(" " + firstHorse, 780, 600);
                g.drawString(" " + secondHorse, 780, 630);
                g.drawString(" " + thirdHorse, 780, 660);
                g.drawString(" " + fourthHorse, 780, 690);
            }

            g.setColor(textColor);
    g.setFont(font);

            //HORSE 1 TEXT
    String h1 = "Dominic -";
    g.drawString(h1, 10, 130);

            //HORSE 2 TEXT
            String h2 = "Charlie -";
    g.drawString(h2, 10, 230);

            //HORSE 3 TEXT
            String h3 = "Admiral -";
    g.drawString(h3, 10, 330);

            //HORSE 4 TEXT
            String h4 = "Bacardi -";
    g.drawString(h4, 10, 430);

}
4

1 回答 1

2

看起来while(running)和Thread.sleep正在给你的问题。对于 Swing 应用程序，请使用javax.swing.Timer. 这是基本构造

Timer(int delay, ActionListener listener)

间隔之间的delay延迟时间（“睡眠” ）在哪里，并且listener就像按钮的侦听器一样使用，除了您不需要按下按钮来Timer触发事件，每隔delayed 毫秒触发一次事件。你可以做这样的事情

Timer timer = new Timer(delay, new ActionListener(){
    @Override 
    public void actionPerformed(ActionEvent e) {
        // the stuff in your while loop here
    }
});
timer.starts();

这是一个正在使用的示例。Timer查看文档以了解可与计时器一起使用的更多方法。

边注

不建议使用空布局。查看在容器中布局组件以获取有关如何使用布局管理器的详细信息，因为您应该使用而不是空布局。

于 2014-02-02T21:31:53.470 回答