在Java问题中使用JLayer在线程中仅播放一个mp3文件

Question

I'm working at an Audio Player, which is written in Java with GUI. For playing the mp3 files, I've chosen JLayer library from javazoom because I saw it's very popular and used. I made the GUI, managed to play the selected mp3 file from the playlist.

My problem is that if I press many times on the play button or on the file from the playlist it will start playing the song as many times as I press it and I want to play it one the same thread ; if I press again play button I want to play again not to start the same song while the current one is playing .

Here is my code which play the mp3 file:

    public class Playing implements Runnable{

        private Player mp3Player;
        private Thread playerThread;

        public void createPlayer(FileInputStream file) throws JavaLayerException{

            mp3Player = new Player(file);

            playerThread = new Thread(this);
            playerThread.start();
    }

   @Override
   public void run(){

        try {

            mp3Player.play();
        } 
        catch (JavaLayerException ex) {

            Logger.getLogger(Playing.class.getName()).log(Level.SEVERE, null, ex);
        }
   }

This is my method for the play button:

    public void createPlayButton(){

        play = new JButton();
        playButton = new ImageIcon("D:/Audio Player/Images/playButton.png");
        play.setBounds(125, 100, 50, 50);
        play.setIcon(playButton);
        play.addActionListener(new ActionListener() {

        @Override
        public void actionPerformed(ActionEvent e) {

            for (int i = 0; i < select.getFilesPath().size(); i++){

                if (select.getFilesPath().get(i).toString().contains(playlistBody.getSongName())){

                    try {
                        mp3Player.createPlayer(new FileInputStream(new File(select.getFilesPath().get(i).toString())));
                    } catch (JavaLayerException ex) {
                        Logger.getLogger(PlayerBody.class.getName()).log(Level.SEVERE, null, ex);
                    } catch (FileNotFoundException ex) {
                        Logger.getLogger(PlayerBody.class.getName()).log(Level.SEVERE, null, ex);
                    }

                }
            }

        }
    });
}

I mention that I'm new to multithreading, so dont be so hard on me. If I cannot do this with JLayer, please recommend me a good library with which I can play mp3 files. Thank you in advance and I'm waiting for your suggestions.

Answer 1

I fixed my issue with the threads; I'll put the solution, maybe will help someone.

     static int fileRunning = 0;

     public void playMp3(FileInputStream file) throws JavaLayerException{

         if (fileRunning == 0){

             mp3Player = new Player(file);

             playerThread = new Thread(this);
             playerThread.start();

             fileRunning = 1;

         }
     }

So the main idea is that when I start playing a song, that int will take value 1, and it won't be 0, so no more threads can be made.

Answer 2

按下播放按钮后使用此功能，一旦播放器启动按钮，线程就已经启动，一旦完成歌曲，该按钮将禁用并再次启用

    yourplaybutton.setEnabled(false);