Retrieve playable Uri from MediaStore, pointed by cursor.

Modify from last exercise "Get info of a specified item in MediaStore.Audio.Media", we can retrieve the playable Uri of selected media from MediaStore, pointed by cursor, using Uri.withAppendedPath().

package com.exercise.AndroidListMedia;

import android.app.ListActivity;
import android.database.Cursor;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.Toast;

public class AndroidListMediaActivity extends ListActivity {
 
 SimpleCursorAdapter adapter;
 MediaPlayer myMediaPlayer;
 
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      String[] from = {
        MediaStore.MediaColumns.TITLE};
      int[] to = {
        android.R.id.text1};
    
      Cursor cursor = managedQuery(
        MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
        null,
        null,
        null,
        MediaStore.Audio.Media.TITLE);
    
      adapter = new SimpleCursorAdapter(this,
        android.R.layout.simple_list_item_1, cursor, from, to);
      setListAdapter(adapter);
  }

 @Override
 protected void onListItemClick(ListView l, View v, int position, long id) {
  Cursor cursor = adapter.getCursor();
  cursor.moveToPosition(position);
  
  String _id = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media._ID));
  String title = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.TITLE));
  String artist = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.ARTIST));
  String album = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Media.ALBUM));
  int duration = cursor.getInt(cursor.getColumnIndex(MediaStore.Audio.Media.DURATION));

  Uri playableUri
   = Uri.withAppendedPath(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, _id);
  myMediaPlayer = MediaPlayer.create(getBaseContext(), playableUri);
  String msgMediaPlayer;
  if(myMediaPlayer != null){
   myMediaPlayer.start();
   msgMediaPlayer = "Playing: " + playableUri + "\n";
  }else{
   msgMediaPlayer = "Cannot play: " + playableUri + "\n";
  }
  
  String info = msgMediaPlayer + "\n"
     + "_ID: " + _id + "\n"
     + "TITLE: " + title + "\n"
     + "ARTIST: " + artist + "\n"
     + "ALBUM: " + album + "\n"
     + "DURATION: " + duration/1000 + "s";
  
  Toast.makeText(this, info, Toast.LENGTH_LONG).show();
 }

}

Download the files.

Next:
- Start activity to play MediaStore.Video.Media by intent with action of Intent.ACTION_VIEW