打开新的JFrame时停止音乐

Question

在我的应用程序中，我添加了一些音乐到我的主框架。如果我点击这个框架上的Jbutton它将打开一个新的Jframe，但我的问题是当我打开新的JFrame音乐仍然继续播放，但我希望它停止时，新的Jframe打开

我的主要代码类：

package View; 

import java.awt.BorderLayout; 
import java.awt.Color; 
import java.awt.Container; 
import java.awt.Dimension; 
import java.awt.Toolkit; 
import java.awt.event.ActionListener; 
import java.io.File; 


import javax.swing.Icon; 
import javax.swing.ImageIcon; 
import javax.swing.JButton; 
import javax.swing.JDialog; 
import javax.swing.JFrame; 
import javax.swing.JLabel; 

import javax.swing.JPanel; 

import Controller.HomeController; 


import music.PlaySound; 

public class Home extends JFrame { 

    private JLabel label, label1, label2; 
    private JPanel panel; 
    private JButton logo, logo1, logo2, logo3, logo4, logo5, selectie; 
    private Container window = getContentPane(); 
    private HomeController Controller; 

    public Home(){ 
     initGUI(); 

    } 
    public void addHomeListener(ActionListener a){ 
     selectie.addActionListener(a); 
    } 
    public void initGUI(){ 
     PlaySound sound = new PlaySound(); 
     setLayout(null); 
     setTitle(""); 
     setPreferredSize(new Dimension(800,600)); 
     setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 

     label = new JLabel();  
     label.setBounds(0, 0, 266, 800); 
     label.setBackground(Color.WHITE); 
     label.setOpaque(true); 
     window.add(label); 

     label1 = new JLabel(); 
     label1.setBounds(267, 0, 266, 800); 
     label1.setBackground(Color.RED); 
     label1.setOpaque(true); 
     window.add(label1); 

     label2 = new JLabel(); 
     label2.setBounds(533, 0, 266, 800); 
     label2.setBackground(Color.WHITE); 
     label2.setOpaque(true); 
     window.add(label2); 

     logo = new JButton(new ImageIcon("../Ajax/src/img/logotje.gif")); 
     logo.setBorderPainted(false); 
     logo.setBounds(40, 150, 188, 188); 
     label1.add(logo); 

     logo1 = new JButton(new ImageIcon("../Ajax/src/img/Ster.png")); 
     logo1.setBorderPainted(false); 
     logo1.setBounds(10, 50, 82, 82); 
     label1.add(logo1); 

     logo2 = new JButton(new ImageIcon("../Ajax/src/img/Ster.png")); 
     logo2.setBorderPainted(false); 
     logo2.setBounds(92, 20, 82, 82); 
     label1.add(logo2); 

     logo3 = new JButton(new ImageIcon("../Ajax/src/img/Ster.png")); 
     logo3.setBorderPainted(false); 
     logo3.setBounds(174, 50, 82, 82); 
     label1.add(logo3); 

     logo4 = new JButton(new ImageIcon("../Ajax/src/img/shirt.png")); 
     logo4.setBorderPainted(false); 
     logo4.setBounds(50, 50, 135, 182); 
     label.add(logo4); 

     logo5 = new JButton(new ImageIcon("../Ajax/src/img/uitshirt.png")); 
     logo5.setBorderPainted(false); 
     logo5.setBounds(65, 50, 138, 190); 
     label2.add(logo5); 

     selectie = new JButton("Selectie"); 
     selectie.setBounds(60, 500, 99, 25); 
     selectie.setActionCommand("selectie"); 
     label.add(selectie); 

     pack(); 

      Controller = new HomeController(this); 
      addHomeListener(Controller); 

      setVisible(true); 
     } 

    public static void main(String... args) 
    { 
     javax.swing.SwingUtilities.invokeLater(new Runnable() 
     { 
      public void run() 
      { 
       new Home(); 
      } 
     }); 
    } 

} 

我新开了JFrame的代码时，点击按钮：

我的音乐类的

package View; 

import java.awt.Color; 
import java.awt.Container; 
import java.awt.Dimension; 
import java.awt.event.ActionListener; 

import javax.swing.JButton; 
import javax.swing.JFrame; 
import javax.swing.JLabel; 
import javax.swing.JMenu; 
import javax.swing.JMenuBar; 
import javax.swing.JMenuItem; 
import javax.swing.JPanel; 

import music.PlaySound; 

import Controller.HomeController; 

public class Selectie extends JFrame{ 

    private JLabel label, label1, label2; 
    private JButton keeper; 
    private JPanel panel; 
    private Container window = getContentPane(); 

    public Selectie() 
    { 
     initGUI(); 
    } 

    public void initGUI() 
    { 
     setLayout(null); 
     setTitle(""); 
     setSize(800,600); 
     setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 

     label = new JLabel();  
     label.setBounds(0, 0, 266, 800); 
     label.setBackground(Color.RED); 
     label.setOpaque(true); 
     window.add(label); 

     label1 = new JLabel(); 
     label1.setBounds(266, 0, 266, 800); 
     label1.setBackground(Color.BLACK); 
     label1.setOpaque(true); 
     window.add(label1); 

     label2 = new JLabel(); 
     label2.setBounds(532, 0, 266, 800); 
     label2.setBackground(Color.RED); 
     label2.setOpaque(true); 
     window.add(label2); 

     keeper = new JButton("Kenneth Vermeer"); 
     keeper.setBounds(10, 50, 82, 82); 
     label.add(keeper); 


    } 
} 

代码：

package music; 

import java.io.*; 
import javax.sound.sampled.*; 

import Controller.HomeController; 
import View.Home; 

public class PlaySound 
{ 

    { 
     sound = new File("../Ajax/src/sound/Sound.wav"); // Write you own file location here and be aware that it need to be an .wav file 

     new Thread(play).start(); 
    } 

    static File sound; 
    static boolean muted = false; // This should explain itself 
    static float volume = 100.0f; // This is the volume that goes from 0 to 100 
    static float pan = 0.0f; // The balance between the speakers 0 is both sides and it goes from -1 to 1 

    static double seconds = 0.0d; // The amount of seconds to wait before the sound starts playing 

    static boolean looped_forever = false; // It will keep looping forever if this is true 

    static int loop_times = 0; // Set the amount of extra times you want the sound to loop (you don't need to have looped_forever set to true) 
    static int loops_done = 0; // When the program is running this is counting the times the sound has looped so it knows when to stop 

    final static Runnable play = new Runnable() // This Thread/Runnabe is for playing the sound 
    { 
     public void run() 
     {  
      try 
      { 
       // Check if the audio file is a .wav file 
       if (sound.getName().toLowerCase().contains(".wav")) 
       { 
        AudioInputStream stream = AudioSystem.getAudioInputStream(sound); 

        AudioFormat format = stream.getFormat(); 

        if (format.getEncoding() != AudioFormat.Encoding.PCM_SIGNED) 
        { 
         format = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, 
           format.getSampleRate(), 
           format.getSampleSizeInBits() * 2, 
           format.getChannels(), 
           format.getFrameSize() * 2, 
           format.getFrameRate(), 
           true); 

         stream = AudioSystem.getAudioInputStream(format, stream); 
        } 

        SourceDataLine.Info info = new DataLine.Info(
          SourceDataLine.class, 
          stream.getFormat(), 
          (int) (stream.getFrameLength() * format.getFrameSize())); 

        SourceDataLine line = (SourceDataLine) AudioSystem.getLine(info); 
        line.open(stream.getFormat()); 
        line.start(); 

        // Set Volume 
        FloatControl volume_control = (FloatControl) line.getControl(FloatControl.Type.MASTER_GAIN); 
        volume_control.setValue((float) (Math.log(volume/100.0f)/Math.log(10.0f) * 20.0f)); 

        // Mute 
        BooleanControl mute_control = (BooleanControl) line.getControl(BooleanControl.Type.MUTE); 
        mute_control.setValue(muted); 

        FloatControl pan_control = (FloatControl) line.getControl(FloatControl.Type.PAN); 
        pan_control.setValue(pan); 

        long last_update = System.currentTimeMillis(); 
        double since_last_update = (System.currentTimeMillis() - last_update)/1000.0d; 

        // Wait the amount of seconds set before continuing 
        while (since_last_update < seconds) 
        { 
         since_last_update = (System.currentTimeMillis() - last_update)/1000.0d; 
        } 

        System.out.println("Playing!"); 

        int num_read = 0; 
        byte[] buf = new byte[line.getBufferSize()]; 

        while ((num_read = stream.read(buf, 0, buf.length)) >= 0) 
        { 
         int offset = 0; 

         while (offset < num_read) 
         { 
          offset += line.write(buf, offset, num_read - offset); 
         } 
        } 


        line.drain(); 
        line.stop(); 

        if (looped_forever) 
        { 
         new Thread(play).start(); 
        } 
        else if (loops_done < loop_times) 
        { 
         loops_done++; 
         new Thread(play).start(); 
        } 
       } 
      } 
      catch (Exception ex) { ex.printStackTrace(); } 
     } 
    }; 
} 

码我按一下按钮类：

package Controller; 

import java.awt.event.ActionEvent; 
import java.awt.event.ActionListener; 

import music.PlaySound; 

import View.Home; 
import View.Selectie; 

public class HomeController implements ActionListener { 

    private Home home; 


    public HomeController(Home home){ 
     this.home = home; 


    } 


    public void actionPerformed (ActionEvent e){ 
      home.dispose(); 

      Selectie selectie = new Selectie(); 
      selectie.setVisible(true); 

    } 
} 

Answer 1

你可以打开新的框架，以表明回放应该停止之前设置在PlaySound的变量。

static boolean shouldStop = false; 

static void stopPlayback() { 
    shouldStop = true; 
} 

在PlaySound的内循环中，您退出循环，线程终止。

while ((num_read = stream.read(buf, 0, buf.length)) >= 0) { 
    if (shouldStop) { 
     break; 
    } 
    ... 
}