MP3-Datei abspielen

PWL

hi,

ich muss in java einen musicplayer programmieren.
könnte mir vl. jmd. helfen indem er mir sagt wie man von nem string ne mp3-datei abspielt?? habe meinen bisherigen code angehängt.

danke!!

Java

import java.io.File;
import javax.swing.JFileChooser;
import javax.swing.filechooser.FileFilter;






public class Frame extends javax.swing.JFrame {


// neuer Frame
    public Frame() {
        initComponents();
    }


  @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {


        jFileChooser1 = new javax.swing.JFileChooser();
        play = new javax.swing.JToggleButton();
        pause = new javax.swing.JToggleButton();
        stop = new javax.swing.JToggleButton();
        browse = new javax.swing.JToggleButton();
        pfad = new javax.swing.JFormattedTextField();
        slider = new javax.swing.JSlider();
        titel = new javax.swing.JLabel();
        time = new javax.swing.JLabel();
        playlist = new javax.swing.JToggleButton();


        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Musicplayer");


        play.setText("Play");
        play.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                playActionPerformed(evt);
            }
        });


        pause.setText("Pause");
        pause.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                pauseActionPerformed(evt);
            }
        });


        stop.setText("Stop");
        stop.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                stopActionPerformed(evt);
            }
        });


        browse.setText("Browse");
        browse.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                browseActionPerformed(evt);
            }
        });


        pfad.setText("Pfad eingeben oder Datei mittels Browse einbinden");
        pfad.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                pfadMouseClicked(evt);
            }
        });
        pfad.addMouseMotionListener(new java.awt.event.MouseMotionAdapter() {
            public void mouseDragged(java.awt.event.MouseEvent evt) {
                pfadMouseDragged(evt);
            }
        });
        pfad.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                pfadActionPerformed(evt);
            }
        });


        slider.setValue(0);


        titel.setText("Musictitel");


        time.setText("Time");


        playlist.setText("Playlist");
        playlist.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                playlistActionPerformed(evt);
            }
        });


        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                            .addComponent(titel, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                            .addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
                                .addComponent(play)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                .addComponent(pause)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(stop)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                .addComponent(browse)))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                        .addComponent(playlist))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(time, javax.swing.GroupLayout.PREFERRED_SIZE, 191, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED))
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                            .addComponent(slider, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 364, Short.MAX_VALUE)
                            .addComponent(pfad, javax.swing.GroupLayout.DEFAULT_SIZE, 364, Short.MAX_VALUE))
                        .addGap(60, 60, 60)))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(titel)
                .addGap(21, 21, 21)
                .addComponent(slider, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(18, 18, 18)
                .addComponent(time)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 42, Short.MAX_VALUE)
                .addComponent(pfad, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(40, 40, 40)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(play)
                    .addComponent(pause)
                    .addComponent(stop)
                    .addComponent(browse)
                    .addComponent(playlist))
                .addContainerGap())
        );


        pack();
    }// </editor-fold>                        


  


private void browseActionPerformed(java.awt.event.ActionEvent evt) {                                       
// action

    javax.swing.JFileChooser browse = new javax.swing.JFileChooser();
    browse.setAcceptAllFileFilterUsed(false);
    FileFilter filter1 = new ExtensionFileFilter("MP3-Musikdateien", new String[] { "MP3" });
    FileFilter filter2 = new ExtensionFileFilter("WAV-Musikdateien", new String[] { "WAV" });
    FileFilter filter3 = new ExtensionFileFilter("OGG-Musikdateien", new String[] { "OGG" });
    browse.setFileFilter(filter3);
    browse.setFileFilter(filter2);
    browse.setFileFilter(filter1);
    if (browse.showOpenDialog(null) == 0) {
        File f=browse.getSelectedFile();
        String s=f.getAbsolutePath();
        pfad.setText(s);





    }
}                                      


private void stopActionPerformed(java.awt.event.ActionEvent evt) {                                     
// action
}                                    


private void pauseActionPerformed(java.awt.event.ActionEvent evt) {                                      
// action
}                                     


private void playActionPerformed(java.awt.event.ActionEvent evt) {                                     
// action
}                                    


private void pfadActionPerformed(java.awt.event.ActionEvent evt) {                                     
// action
}                                    


private void pfadMouseClicked(java.awt.event.MouseEvent evt) {                                  
// action
    if (pfad.getText().startsWith("Pfad"))
    {
    pfad.setText("");
    }
}                                 


private void pfadMouseDragged(java.awt.event.MouseEvent evt) {                                  
// action
    pfad.setText("");

}                                 


private void playlistActionPerformed(java.awt.event.ActionEvent evt) {                                         
//action
    new Playlist().setVisible(true);
}                                        


    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Frame().setVisible(true);
            }
        });
    }


    // Variables declaration - do not modify                     
    private javax.swing.JToggleButton browse;
    private javax.swing.JFileChooser jFileChooser1;
    private javax.swing.JToggleButton pause;
    private javax.swing.JFormattedTextField pfad;
    private javax.swing.JToggleButton play;
    private javax.swing.JToggleButton playlist;
    private javax.swing.JSlider slider;
    private javax.swing.JToggleButton stop;
    private javax.swing.JLabel time;
    private javax.swing.JLabel titel;
    // End of variables declaration                   


}

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Zitat von PWL

hi,

ich muss in java einen musicplayer programmieren.
könnte mir vl. jmd. helfen indem er mir sagt wie man von nem string ne mp3-datei abspielt?? habe meinen bisherigen code angehängt.

danke!!

von nem string ne mp3-datei abspieln? ähm...
meinst du als string den dateinamen? ansonst wirds wohl schwer, weil ne mp3-datei ein binärstream ist.

grundsätzlich musst du dir einen decoder für mp3 schreiben. du öffnest quasi das file und decodierst die daten gemäß dem mp3-format.

falls dir das zu schwer ist (mir wars das), kannst vorgefertigte dinger, wie zb. das JavaZoom MP3SPI verwenden.
Es gibt auch ne menge Beispielcode, wie die lib zu verwenden ist.

owaye

Alternativ bietet sich auch (wie uns in der MM1 Übung eingetrichtert wurde ;)) das Java Media Framework (JMF) an. Soweit ich in Erinnerung habe, haben die auch MP3 Support und du brauchst keinen Decoder schreiben.

Maximilian Rupp 27. Dezember 2024 um 12:04