在Android的res/raw文件夾中創建mp3文件的ArrayList

Question

我正在使用以下代碼從我的res/raw文件播放媒體文件，並且工作正常。但是，我的res/raw文件夾中有20個mp3文件我應該如何在res/raw文件夾中創建mp3文件的ArrayList？

MediaPlayer mediaPlayer = MediaPlayer.create(context, R.raw.music_file); 
mediaPlayer.start(); 

下面是我的完整代碼;我是個無法播放第二音頻文件，

public class Datadetail extends AppCompatActivity { 
private Context context; 
TextView txtname; 
TextView txtaarti; 
String[] itemname; 
int position; 

ImageButton buttonPlay; 

int[] songlist = {R.raw.ganesh_aarti, R.raw.durga_aarti}; 
@Override 
public void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
this.setContentView(R.layout.data_detail); 


Intent i = getIntent(); 

position = i.getExtras().getInt("position"); 
itemname = i.getStringArrayExtra("itemname"); 

txtname = (TextView) findViewById(R.id.textView2); 
txtname.setText(itemname[position]); 

txtaarti = (TextView) findViewById(R.id.textView3); 
txtaarti.setText(Aarti.aartitxt[position]); 


final MediaPlayer[] mPlayer = {MediaPlayer.create(this, songlist[0])}; 


buttonPlay = (ImageButton) findViewById(R.id.imageButton); 
buttonPlay.setOnClickListener(new View.OnClickListener() { 

    public void onClick(View v) { 
     if (position==0) { 
      mPlayer[0] = MediaPlayer.create(getApplicationContext(), R.raw.ganesh_aarti); 
      mPlayer[0].start(); 
     } 
     if (position==1){ 
      mPlayer[1] = MediaPlayer.create(getApplicationContext(), R.raw.durga_aarti); 
      mPlayer[1].start(); 
     } 


    } 


}); 

}

Answer 1

public void listRaw(){ 
    Field[] fields=R.raw.class.getFields(); 
    for(int count=0; count < fields.length; count++){ 
     Log.i("Raw Asset: ", fields[count].getName()); 
     int resourceID=fields[count].getInt(fields[count]); 
     mArrayList.add(resourceID); 
    } 
} 

此之後，你有一個ArrayList的每一個音樂文件，相應地播放它們:)