Android MediaStoreプレイリストにhttp URLを挿入

Question

内蔵の音楽プレーヤーに表示されるオンラインオーディオトラックのプレイリストを作成する必要があります。 http URLをMediaStoreに挿入し、そこから再生リストを作成するとうまくいくのですか？ ビルトインプレーヤーはそれを再生しますか？または、これはすべて、SDカード/携帯電話のストレージのコンテンツについてのみ発明されている/働いていますか？

ありがとうございます。

Answer 1

私はあなたがSQLiteの、あなたのためのおかげで返信

package com.example.DoomedPlayer; 

import android.content.ContentValues; 
import android.content.Context; 
import android.database.Cursor; 
import android.database.sqlite.SQLiteDatabase; 
import android.database.sqlite.SQLiteOpenHelper; 

import java.util.ArrayList; 

public class PlaylistDB extends SQLiteOpenHelper 
{ 

    private static final int DATABASE_VERSION = 2; 
    private static final String DATABASE_NAME = "playlistsData"; 
    private static final String TABLE_LISTPLAYLIST = "listplaylist"; 
    private static final String KEY_ID = "id"; 
    private static final String KEY_NAME_PLAYLIST = "playlist"; 
    private static final String KEY_NAME_TRACK = "track"; 
    private static final String TABLE_DEFAULT = "default"; 

    public PlaylistDB(Context context) 
    { 
     super(context, DATABASE_NAME, null, DATABASE_VERSION); 
    } 

    @Override 
    public void onCreate(SQLiteDatabase db) 
    { 
     String createListPlaylistTable = "CREATE TABLE " + TABLE_LISTPLAYLIST + "(" 
       + KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT," + KEY_NAME_PLAYLIST + " TEXT" + ")"; 

     String createDefaultPlaylistTable = "CREATE TABLE IF NOT EXISTS " + TABLE_DEFAULT + "(" 
       + KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT," + KEY_NAME_TRACK + " TEXT" + ")"; 

     db.execSQL(createDefaultPlaylistTable); 
     db.execSQL(createListPlaylistTable); 

     ContentValues cv = new ContentValues(); 
     cv.put(KEY_NAME_PLAYLIST, TABLE_DEFAULT); 
     db.insert(TABLE_LISTPLAYLIST,null,cv); 

     String[] tables = getListPlaylistForDatabase(db); 
     for(String table : tables) 
     { 
      if(!table.equals(TABLE_DEFAULT)) 
      { 
       String createPlaylistTable = "CREATE TABLE " + table + "(" 
         + KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT," + KEY_NAME_TRACK + " TEXT" + ")"; 
       db.execSQL(createPlaylistTable); 
      } 
     } 
    } 

    @Override 
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) 
    { 
     String[] tables = getListPlaylistForDatabase(db); 
     for(String table : tables) 
     { 
      db.execSQL("DROP TABLE IF EXISTS " + table); 
     } 
     db.execSQL("DROP TABLE IF EXISTS " + TABLE_LISTPLAYLIST); 
     onCreate(db); 
    } 
    public void addTracks(String[] tracks, String playlist) 
    { 
     SQLiteDatabase db = getWritableDatabase(); 
     ContentValues cv; 

     for(String track : tracks) 
     { 
      cv = new ContentValues(); 
      cv.put(KEY_NAME_TRACK, track); 
      db.insert(playlist, null, cv); 
     } 
     db.close(); 
    } 
    public void addOneTrack(String track ,String playlist) 
    { 
     SQLiteDatabase db = getWritableDatabase(); 
     ContentValues cv = new ContentValues(); 
     cv.put(KEY_NAME_TRACK, track); 
     db.insert(playlist, null, cv); 
     db.close(); 
    } 
    public void deleteTrack(String track,String playlist) 
    { 
     SQLiteDatabase db = getWritableDatabase(); 
     db.delete(playlist, KEY_NAME_TRACK + " = ?", new String[]{track}); 
     db.close(); 
    } 

    public String[] getTracks(String playlist) 
    { 
     SQLiteDatabase db = getWritableDatabase(); 
     ArrayList<String> tracks = new ArrayList<String>(); 

     Cursor c = db.query(playlist,null,null, null, null, null, null); 

     if (c != null && c.moveToFirst()) 
     { 
      do 
      { 
       tracks.add(c.getString(c.getColumnIndex(KEY_NAME_TRACK))); 

      }while(c.moveToNext()); 
     } 
     db.close(); 
     String[] result = new String[tracks.size()]; 
     result = tracks.toArray(result); 
     return result; 
    } 
    public String[] getListPlaylistForDatabase(SQLiteDatabase db) 
    { 
     ArrayList<String> listPlaylist = new ArrayList<String>(); 
     Cursor c = db.query(TABLE_LISTPLAYLIST,null,null,null,null,null,null,null); 
     if (c != null && c.moveToFirst()) 
     { 
      do 
      { 
       listPlaylist.add(c.getString(c.getColumnIndex(KEY_NAME_PLAYLIST))); 

      }while(c.moveToNext()); 
     } 

     String[] result = new String[listPlaylist.size()]; 
     result = listPlaylist.toArray(result); 
     return result; 
    } 
    public String[] getListPlaylist() 
    { 
     ArrayList<String> listPlaylist = new ArrayList<String>(); 
     SQLiteDatabase db = getWritableDatabase(); 
     Cursor c = db.query(TABLE_LISTPLAYLIST,null,null,null,null,null,null,null); 
     if (c != null && c.moveToFirst()) 
     { 
      do 
      { 
       listPlaylist.add(c.getString(c.getColumnIndex(KEY_NAME_PLAYLIST))); 

      }while(c.moveToNext()); 
     } 
     db.close(); 

     String[] result = new String[listPlaylist.size()]; 
     result = listPlaylist.toArray(result); 
     return result; 
    } 
    public void deletePlaylist(String playlist) 
    { 
     SQLiteDatabase db = getWritableDatabase(); 
     db.delete(TABLE_LISTPLAYLIST,KEY_NAME_PLAYLIST + " = ?", new String[]{playlist}); 
     db.delete(playlist,null,null); 
     db.execSQL("DROP TABLE IF EXISTS " + playlist); 
     db.close(); 
    } 
    public void changeColumns(String playlist , String track,String trackUpDown) 
    { 
     SQLiteDatabase db = getWritableDatabase(); 

     Cursor cTrack = db.query(playlist,null,KEY_NAME_TRACK + " = ?",new String[]{track},null,null,null,null); 
     cTrack.moveToFirst(); 
     int idTrack = cTrack.getInt(cTrack.getColumnIndex(KEY_ID)); 

     Cursor cTrackUpDown = db.query(playlist,null,KEY_NAME_TRACK + " = ?",new String[]{trackUpDown},null,null,null,null); 
     cTrackUpDown.moveToFirst(); 
     int idTrackUpDown = cTrackUpDown.getInt(cTrack.getColumnIndex(KEY_ID)); 



     ContentValues values = new ContentValues(); 
     values.put (KEY_NAME_TRACK, trackUpDown); 
     String where = KEY_ID+ " = ?"; 
     String[] whereArgs = new String[]{idTrack + ""}; 

     db.update (playlist, values, where, whereArgs); 

     ContentValues cv = new ContentValues(); 
     cv.put (KEY_NAME_TRACK, track); 
     String[] whereArgsSec = new String[]{ idTrackUpDown + ""}; 

     db.update (playlist, cv, where, whereArgsSec); 

     db.close(); 

    } 
    public void addPlaylist(String playlist) 
    { 
     SQLiteDatabase db = getWritableDatabase(); 
     ContentValues cv = new ContentValues(); 
     cv.put(KEY_NAME_PLAYLIST,playlist); 
     db.insert(TABLE_LISTPLAYLIST,null,cv); 
     String createPlaylistTable = "CREATE TABLE " + playlist + "(" 
       + KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT," + KEY_NAME_TRACK + " TEXT" + ")"; 
     db.execSQL(createPlaylistTable); 
     db.close(); 
    } 
}