نیاز به کدی برای خواندن آهنگ ها از حافظه داخلی و اس دی کارت(حل شد)

خب! چون هیچ کسی کمکی نکرد و شاید هم بلد نبود من با کمک یکی از دوستانم یه چیزی پیدا کردم.

اینجا با بقیه دوستان به اشتراک میزارم انشالله که کمک کنه .

ابتدا کلاسی نیاز هست با نام MusicLoadAdapter به این صورت:

public class MusicLoadAdapter extends BaseAdapter implements OnClickListener{
private static StringBuilder sFormatBuilder = new StringBuilder();
private static Formatter sFormatter = new Formatter(sFormatBuilder, Locale.getDefault());
private static final Object[] sTimeArgs = new Object[5];

public static String makeTimeString(Context context, long secs) {

String durationformat = context.getString(secs < 3600 ? R.string.durationformatshort
: R.string.durationformatlong);

/*
* Provide multiple arguments so the format can be changed easily by
* modifying the xml.
*/
sFormatBuilder.setLength(0);

final Object[] timeArgs = sTimeArgs;
timeArgs[0] = secs / 3600;
timeArgs[1] = secs / 60;
timeArgs[2] = (secs / 60) % 60;
timeArgs[3] = secs;
timeArgs[4] = secs % 60;

return sFormatter.format(durationformat, timeArgs).toString();
}
private Activity activity;
private String[] data;
private String[] artistNames;
private long[] durations;
private static LayoutInflater inflater=null;
//public ImageLoader imageLoader;

public MusicLoadAdapter(Activity a, String[] d,String[] artNames,long[] durs) {
activity = a;
data=d;
artistNames=artNames;
durations=durs;
inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

// Create ImageLoader object to download and show image in list
// Call ImageLoader constructor to initialize FileCache


//imageLoader = new ImageLoader(activity.getApplicationContext());
}

@Override
public int getCount() {
return data.length;
}

@Override
public Object getItem(int position) {
return position;
}

@Override
public long getItemId(int position) {
return position;
}

/********* Create a holder Class to contain inflated xml file elements *********/
public static class ViewHolder{
TextView track_name;
TextView artist_name;
TextView track_duration;



}

@Override
public View getView(int position, View convertView, ViewGroup parent) {

View vi=convertView;
ViewHolder holder;

if(convertView==null){

/****** Inflate tabitem.xml file for each row ( Defined below ) *******/
vi = inflater.inflate(R.layout.musicitem, null);

/****** View Holder Object to contain tabitem.xml file elements ******/

holder = new ViewHolder();
holder.track_name = (TextView) vi.findViewById(R.id.MusicName1);
holder.artist_name = (TextView) vi.findViewById(R.id.summary);
holder.track_duration = (TextView) vi.findViewById(R.id.duration);
//holder.text1=(TextView)vi.findViewById(R.id.text1);
// holder.image=(ImageView)vi.findViewById(R.id.image);

/************ Set holder with LayoutInflater ************/
vi.setTag( holder );
}
else
holder=(ViewHolder)vi.getTag();

long secs = durations[position] / 1000;

if (secs <= 0) {
holder.track_duration.setText("");
} else {
holder.track_duration.setText(makeTimeString(activity.getApplicationContext(), secs));
}

holder.artist_name.setText(artistNames[position]);
//holder.artist_name.setTextColor(Color.WHITE);

holder.track_name.setText(data[position]);
//holder.track_name.setTextColor(Color.WHITE);


/******** Set Item Click Listner for LayoutInflater for each row ***********/
vi.setOnClickListener(new OnItemClickListener(position));
return vi;
}

@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub

}


/********* Called when Item click in ListView ************/
private class OnItemClickListener implements OnClickListener{
private int mPosition;

OnItemClickListener(int position){
mPosition = position;
}

@Override
public void onClick(View arg0) {
MusicActivity sct = (MusicActivity)activity;
sct.onItemClick(mPosition);
}

}

بعد از اون به کلاس یا اکتیویتی MusicActivity نیاز داریم به این صورت:

 public class MusicActivity extends Activity {
      ListView musiclist;
      MusicLoadAdapter adapter;
      public  String[] mStrings;
      public  String[] mStringspath;
      public String[] artistNames;
      public long[] durations;
      Cursor musiccursor;
      int music_column_index;
      int count;
      //MediaPlayer mMediaPlayer;

      /** Called when the activity is first created. */
      @Override
      public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.musiclist);
            System.gc();
            String[] proj = { MediaStore.Audio.Media._ID,MediaStore.Audio.Media.DATA,MediaStore.Audio.Media.DISPLAY_NAME,MediaStore.Video.Media.DURATION,MediaStore.Video.Media.ARTIST };
            musiccursor = managedQuery(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,proj, null, null, null);
            count = musiccursor.getCount();
            mStrings=new String[count];
            mStringspath=new String[count];
            artistNames=new String[count];
            durations=new long[count];
            //Log.d("columnNames",
            for(int k=0;k<count;k++){
            musiccursor.moveToPosition(k);
            music_column_index = musiccursor.getColumnIndexOrThrow(MediaStore.Audio.Media.DISPLAY_NAME);//DATA);
            String filename = musiccursor.getString(music_column_index);
            mStrings[k]=filename;

            int durid= musiccursor.getColumnIndexOrThrow(MediaStore.Audio.Media.DURATION);
            try{
            durations[k]=musiccursor.getLong(durid);
            }catch(Exception tyt){
            	durations[k]=0;
            }
            //Log.d("durations",String.valueOf(musiccursor.getLong(durid)));
            
            int artid= musiccursor.getColumnIndexOrThrow(MediaStore.Audio.Media.ARTIST);
            try{
            artistNames[k]=musiccursor.getString(artid);
            }catch(Exception tyt){
            	artistNames[k]="";
            }
            int path= musiccursor.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA);
            mStringspath[k]= musiccursor.getString(path);
            //Log.d("columnNames",filename);//+"- "+String.valueOf(columnNames.length));
            }
            
            //String[] columnNames=musiccursor.getColumnNames();
            //Log.d("columnNames",String.valueOf(columnNames.length));
            //init_phone_music_grid();
            musiclist=(ListView)findViewById(R.id.PhoneMusicList);
            
           
            adapter=new MusicLoadAdapter(this, mStrings,artistNames,durations);                      
            musiclist.setAdapter(adapter);
      }
      @Override
      public void onDestroy()
      {
      	// Remove adapter refference from list
    	  musiclist.setAdapter(null);
          super.onDestroy();
      }
      
      public OnClickListener listener=new OnClickListener(){
          @Override
          public void onClick(View arg0) {
          	
          	//Refresh cache directory downloaded images
              //adapter.imageLoader.clearCache();
              adapter.notifyDataSetChanged();
          }
      };
      public void onItemClick(int mPosition)
      {
      	String tempValues = mStringspath[mPosition];
      	try {                      
       	 Log.d("url",tempValues);
            Intent ii = new Intent( MusicActivity.this,MainActivity.class);
          	 ii.putExtra("url", tempValues);    
          	 finish();
          	 startActivityForResult(ii, 0);                   	                    	                        
         } catch (Exception e) {

         }
      
      }
    
}

بعد از اینها نوبت xml ها میرسه که یک xml داریم که یک listview توش هست و آیدیش رو از اکتیویتی بالا بهش میدید

و یک xml دیگه داریم که باز هم با استفاده از بالا باید adapter نمونه رو بسازید و بهش کد رو نسبت بدید.

و در نهایت در داخل res/values فایل string.xml باید به شکل زیر باشه:

 <?xml version="1.0" encoding="utf-8"?>
<resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">

	<string name="durationformatshort" translatable="false"><xliff:g id="format">%2$d:%5$02d</xliff:g></string>
	<string name="durationformatlong" translatable="false"><xliff:g id="format">%1$d:%3$02d:%5$02d</xliff:g></string>

    <string name="app_name">Disco Lightning</string>
    <string name="action_settings">Settings</string>
    <string name="hello_world">Hello world!</string>

   
</resources>

والسلام!

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