將.mp3文件包含在.apk中

Question

我目前正在使用Media Player。除了我在Android模擬器外部存儲中有.mp3文件之外，所有操作都已完成。我想知道的是，如何將所有這些.mp3文件包含到.apk中，以便在手機上安裝應用程序時，這些文件會自動在設備的內部或外部存儲器上傳輸。 我已經經歷了這個問題，但無法在任何地方找到最佳答案。

請幫幫我！

這是我的代碼

VoiceService.java

package com.example.soundplayer; 

import android.app.Service; 
import java.util.ArrayList; 
import android.content.ContentUris; 
import android.media.AudioManager; 
import android.media.MediaPlayer; 
import android.net.Uri; 
import android.os.Binder; 
import android.os.PowerManager; 
import android.util.Log; 
import android.content.Intent; 
import android.os.IBinder; 
import java.util.Random; 
import android.app.Notification; 
import android.app.PendingIntent; 
import com.example.soundplayer.Voice; 

public class VoiceService extends Service implements 
MediaPlayer.OnPreparedListener, MediaPlayer.OnErrorListener, 
MediaPlayer.OnCompletionListener{ 

    //media player 
    private MediaPlayer player; 
    //song list 
    private ArrayList<Voice> songs; 
    //current position 
    private int songPosn; 

    private boolean shuffle=false; 

    private Random rand; 

    private String songTitle; 

    private static final int NOTIFY_ID=1; 

    private final IBinder musicBind = new MusicBinder(); 

    public void onCreate() 
    { 
     //create the service 
     super.onCreate(); 
     //initialize position 
     songPosn=0; 
     //create player 
     player = new MediaPlayer(); 

     initMusicPlayer(); 

     rand=new Random(); 


    } 
    public void setShuffle(){ 
      if(shuffle) shuffle=false; 
      else shuffle=true; 
     } 

    public void initMusicPlayer() 
    { 
     player.setWakeMode(getApplicationContext(), 
        PowerManager.PARTIAL_WAKE_LOCK); 
       player.setAudioStreamType(AudioManager.STREAM_MUSIC); 

       player.setOnPreparedListener(this); 
       player.setOnCompletionListener(this); 
       player.setOnErrorListener(this); 

    } 

    public void setList(ArrayList<Voice> theSongs){ 
      songs=theSongs; 
     } 

    public class MusicBinder extends Binder 
    { 
      VoiceService getService() { 
      return VoiceService.this; 
    } 
     } 


    public IBinder onBind(Intent intent) { 
     // TODO Auto-generated method stub 
     return musicBind; 
    } 
    public boolean onUnbind(Intent intent){ 
      player.stop(); 
      player.release(); 
      return false; 
     } 

    public void playSong(){ 
      //play a song 

     player.reset(); 
     //get song 
     Voice playSong = songs.get(songPosn); 
     songTitle=playSong.getTitle(); 
     //get id 
     long currSong = playSong.getID(); 
     //set uri 
     Uri trackUri = ContentUris.withAppendedId(
      android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, 
      currSong); 
     try 
     { 
       player.setDataSource(getApplicationContext(), trackUri); 
     } 
      catch(Exception e) 
      { 
       Log.e("MUSIC SERVICE", "Error setting data source", e); 
      } 
      player.prepareAsync(); 
     } 

    public void setSong(int songIndex){ 
      songPosn=songIndex; 
     } 

    @Override 
    public void onCompletion(MediaPlayer mp) { 
     // TODO Auto-generated method stub 
     if(player.getCurrentPosition()>=0){ 
      mp.reset(); 
      playNext(); 
      } 

    } 
    @Override 
    public void onDestroy() { 
     stopForeground(true); 
    } 

    @Override 
    public boolean onError(MediaPlayer mp, int what, int extra) { 
     // TODO Auto-generated method stub 
     mp.reset(); 
      return false; 
    } 

    @Override 
    public void onPrepared(MediaPlayer mp) { 
     mp.start(); 

     Intent notIntent = new Intent(this, MainActivity.class); 
     notIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 
     PendingIntent pendInt = PendingIntent.getActivity(this, 0, 
      notIntent, PendingIntent.FLAG_UPDATE_CURRENT); 

     Notification.Builder builder = new Notification.Builder(this); 

     builder.setContentIntent(pendInt) 
      .setSmallIcon(R.drawable.play) 
      .setTicker(songTitle) 
      .setOngoing(true) 
      .setContentTitle("Playing") 
      .setContentText(songTitle); 
     Notification not = builder.build(); 

     startForeground(NOTIFY_ID, not); 

    } 

    public int getPosn(){ 
      return player.getCurrentPosition(); 
     } 

     public int getDur(){ 
      return player.getDuration(); 
     } 

     public boolean isPng(){ 
      return player.isPlaying(); 
     } 

     public void pausePlayer(){ 
      player.pause(); 
     } 

     public void seek(int posn){ 
      player.seekTo(posn); 
     } 

     public void go(){ 
      player.start(); 
     } 

     public void playPrev(){ 
       songPosn--; 
       if(songPosn>=0) songPosn=songs.size()-1; 
       playSong(); 
      } 

     public void playNext(){ 
      if(shuffle){ 
       int newSong = songPosn; 
       while(newSong>=songPosn){ 
        newSong=rand.nextInt(songs.size()); 
       } 
       songPosn=newSong; 
       } 
       else{ 
       songPosn++; 
       if(songPosn==songs.size()) songPosn=0; 
       } 
       playSong(); 
      } 
} 

MainActivity.java

package com.example.soundplayer; 

import android.app.Activity; 
import java.util.ArrayList; 
import java.util.Collections; 
import java.util.Comparator; 

import android.widget.MediaController.MediaPlayerControl; 

import com.example.soundplayer.VoiceService.MusicBinder; 

import android.net.Uri; 
import android.content.ContentResolver; 
import android.database.Cursor; 
import android.widget.ListView; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.os.IBinder; 
import android.content.ComponentName; 
import android.content.Context; 
import android.content.Intent; 
import android.content.ServiceConnection; 
import android.view.MenuItem; 
import android.view.View; 

public class MainActivity extends Activity implements MediaPlayerControl{ 

    private ArrayList<Voice> songList; 
    private ListView songView; 
    private VoiceService musicSrv; 
    private Intent playIntent; 
    private boolean musicBound=false; 
    private VoiceController controller; 
    private boolean paused=false, playbackPaused=false; 



    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     songView = (ListView)findViewById(R.id.song_list); 

     songList = new ArrayList<Voice>(); 

     getSongList(); 

     Collections.sort(songList, new Comparator<Voice>(){ 
       public int compare(Voice a, Voice b){ 
       return a.getTitle().compareTo(b.getTitle()); 
       } 
       }); 

     SongAdapter songAdt = new SongAdapter(this, songList); 
     songView.setAdapter(songAdt); 

     setController(); 


     } 

    private void setController(){ 
      //set the controller up 
     controller = new VoiceController(this); 
     controller.setPrevNextListeners(new View.OnClickListener() { 
       @Override 
       public void onClick(View v) { 
       playNext(); 
       } 
      }, new View.OnClickListener() { 
       @Override 
       public void onClick(View v) { 
       playPrev(); 
       } 
      }); 
     controller.setMediaPlayer(this); 
     controller.setAnchorView(findViewById(R.id.song_list)); 
     controller.setEnabled(true); 

     } 

    private void playNext(){ 
     musicSrv.playNext(); 
      if(playbackPaused){ 
      setController(); 
      playbackPaused=false; 
      } 
      controller.show(0); 
     } 

     //play previous 
     private void playPrev(){ 
      musicSrv.playPrev(); 
       if(playbackPaused){ 
       setController(); 
       playbackPaused=false; 
       } 
       controller.show(0); 
     } 
     @Override 
     protected void onPause(){ 
      super.onPause(); 
      paused=true; 
     } 

     @Override 
     protected void onResume(){ 
      super.onResume(); 
      if(paused){ 
      setController(); 
      paused=false; 
      } 
     } 
     @Override 
     protected void onStop() { 
      controller.hide(); 
      super.onStop(); 
     } 


    //connect to the service 
    private ServiceConnection musicConnection = new ServiceConnection(){ 

     @Override 
     public void onServiceConnected(ComponentName name, IBinder service) { 
     MusicBinder binder = (MusicBinder)service; 
     //get service 
     musicSrv = binder.getService(); 
     //pass list 
     musicSrv.setList(songList); 
     musicBound = true; 
     } 



     @Override 
     public void onServiceDisconnected(ComponentName name) { 
     musicBound = false; 
     } 



    }; 

    @Override 
    public void onBackPressed() { 
    moveTaskToBack(true); 
    } 

    public void songPicked(View view){ 
     musicSrv.setSong(Integer.parseInt(view.getTag().toString())); 
      musicSrv.playSong(); 
      if(playbackPaused){ 
      setController(); 
      playbackPaused=false; 
      } 
      controller.show(0); 
     } 

    @Override 
    protected void onStart() { 
     super.onStart(); 
     if(playIntent==null){ 
     playIntent = new Intent(this, VoiceService.class); 
     bindService(playIntent, musicConnection, Context.BIND_AUTO_CREATE); 
     startService(playIntent); 
     } 
    } 

    public boolean onOptionsItemSelected(MenuItem item) { 
     switch (item.getItemId()) { 
     case R.id.action_shuffle: 
       musicSrv.setShuffle(); 
       break; 
     case R.id.action_end: 
      stopService(playIntent); 
      musicSrv=null; 
      System.exit(0); 
      break; 

     } 
     return super.onOptionsItemSelected(item); 
     } 

    @Override 
    protected void onDestroy() { 
     stopService(playIntent); 
     musicSrv=null; 
     super.onDestroy(); 
    } 

    public void getSongList() { 

     ContentResolver musicResolver = getContentResolver(); 
     Uri musicUri = android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI; 
     Cursor musicCursor = musicResolver.query(musicUri, null, null, null, null); 


     if(musicCursor!=null && musicCursor.moveToFirst()){ 
       //get columns 
       int titleColumn = musicCursor.getColumnIndex 
       (android.provider.MediaStore.Audio.Media.TITLE); 
       int idColumn = musicCursor.getColumnIndex 
       (android.provider.MediaStore.Audio.Media._ID); 
       int artistColumn = musicCursor.getColumnIndex 
       (android.provider.MediaStore.Audio.Media.ARTIST); 
       //add songs to list 
       do { 
       long thisId = musicCursor.getLong(idColumn); 
       String thisTitle = musicCursor.getString(titleColumn); 
       String thisArtist = musicCursor.getString(artistColumn); 
       songList.add(new Voice(thisId, thisTitle, thisArtist)); 
       } 
       while (musicCursor.moveToNext()); 
      } 

     } 



    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.main, menu); 
     return true; 
    } 

    @Override 
    public void start() { 
     // TODO Auto-generated method stub 
     musicSrv.go(); 
    } 

    @Override 
    public void pause() { 
     // TODO Auto-generated method stub 
     playbackPaused=true; 
      musicSrv.pausePlayer(); 
    } 

    @Override 
    public int getDuration() { 
     if(musicSrv!=null && musicBound && musicSrv.isPng()) 
      return musicSrv.getDur(); 
      else return 0; 
    } 

    @Override 
    public int getCurrentPosition() { 
     if(musicSrv!=null && musicBound && musicSrv.isPng()) 

      return musicSrv.getPosn(); 
      else return 0; 
    } 

    @Override 
    public void seekTo(int pos) { 
     // TODO Auto-generated method stub 
     musicSrv.seek(pos); 
    } 

    @Override 
    public boolean isPlaying() { 
     if(musicSrv!=null && musicBound) 
      return musicSrv.isPng(); 
      return false; 
    } 

    @Override 
    public int getBufferPercentage() { 
     // TODO Auto-generated method stub 
     return 0; 
    } 

    @Override 
    public boolean canPause() { 
     // TODO Auto-generated method stub 
     return true; 
    } 

    @Override 
    public boolean canSeekBackward() { 
     // TODO Auto-generated method stub 
     return true; 
    } 

    @Override 
    public boolean canSeekForward() { 
     // TODO Auto-generated method stub 
     return true; 
    } 

    @Override 
    public int getAudioSessionId() { 
     // TODO Auto-generated method stub 
     return 0; 
    } 



} 

Answer 1

只是你.mp3文件複製到RES /原始文件夾，並閱讀

mp = MediaPlayer.create(context, R.raw.fileName);