启用JLabel闪烁3次，然后保持不可见/消失 [英] Enable blinking of JLabel 3 times and then remain invisible/disappear

问题描述

我打算编写控制JLabel闪烁三次的java代码，然后在第三次闪烁后启用其中的文本保持透明/消失。

I intend on writing java code which controls a JLabel to blink three times and then after the third blink enable the text within it to remain transparent/"disappear."

如下面的代码所示，我已经能够编写一个连续闪烁的JLabel，但是想创建一个只闪烁三次然后使其中的文本保持透明的JLabel。

As indicated from the code below, I've been able to write a JLabel which continuously blinks but would like to create one that blinks only three times and then enable the text within it to remain transparent.

public class BlinkLabel extends JLabel {

      private static final long serialVersionUID = 1L;

      private static final int BLINKING_RATE = 1000; // in ms

      private boolean blinkingOn = true;

      public Timer timer;

      public BlinkLabel(String text) {
        super(text);            
        timer = new Timer( BLINKING_RATE , new TimerListenerTwo());
        timer.setInitialDelay(0);
        timer.start();

      }

      public void setBlinking(boolean flag) {
        this.blinkingOn = flag;
      }

      public boolean getBlinking(boolean flag) {
        return this.blinkingOn;
      }

      public class TimerListenerTwo implements ActionListener{
            int counter = 1;

            public TimerListenerTwo() {

            }

            public void actionPerformed(ActionEvent evt){
                if(counter == 3){//3 = YOUR MAX
                    timer.stop();
                }
                counter++;
            }
       }
}

我将上述函数称为如下：

I call the above function as follows:

BlinkLabel label = new BlinkLabel("");
label.setText("Blink blink");

如何编辑上面的代码以使JLabel闪烁三次并使文本消失。

How can I edit my above code to enable the JLabel to blink three time and have the text disappear.

非常感谢任何想法/建议。

Any ideas/suggestions are greatly appreciated.

推荐答案

非常简单，在JFrame或JDialog中创建一个子类。

Its very simple, create a sub class below in your JFrame or JDialog.

class LbBlink implements ActionListener {  
        private javax.swing.JLabel label;
        private java.awt.Color cor1 = java.awt.Color.red;
        private java.awt.Color cor2 = java.awt.Color.gray;
        private int count;

        public LbBlink(javax.swing.JLabel label){
            this.label = label;
        }
        @Override
        public void actionPerformed(ActionEvent e) {
            if(count % 2 == 0)
                label.setForeground(cor1);
            else
                label.setForeground(cor2);
            count++;
        }  
    }

在你的班级中声明一个变量。

Declare a variable in your class.

private Timer timerLB;

之后，在你的类构造中设置变量。

After, in your class construct set the variable.

timerLB = new Timer(1000, new "Your Class".LbBlink("Your jLabel"));

最后，在您的应用程序中，开始闪烁

Finally, in your application, for start blink

timerLB.start();

停止：

timerLB.stop();

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