Android Open Source - PlayTunes Search Albums Adapter

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License

The source code is released under:

Copyright (c) 2014, Impeccable Labs, LLC. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions ar...

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Java Source Code

package com.ideabag.playtunes.adapter.search;
//  ww w .  ja  va  2  s. co  m
import com.ideabag.playtunes.adapter.AlbumListAdapter;
import com.ideabag.playtunes.database.MediaQuery;
import com.ideabag.playtunes.util.ISearchableAdapter;

import android.content.Context;
import android.provider.MediaStore;

public class SearchAlbumsAdapter extends AlbumListAdapter implements ISearchableAdapter {
  
  public static final String TAG = "SongAlbumsAdapter";
  String mSearchTerms;
  
  private int mTruncateAmount;
  
  public SearchAlbumsAdapter( Context context, String searchTerms, int truncated, MediaQuery.OnQueryCompletedListener listener ) {
    super( context );
    
    mTruncateAmount = truncated;
    
    setOnQueryCompletedListener( listener );
    
    if ( null != searchTerms && searchTerms.length() > 0 ) {
      
      setSearchTerms( searchTerms );
        
    }
    
  }
  //
  // Compare both the album name and artist
  //
  public void setSearchTerms( String queryString ) {
    
    if ( null != queryString && !queryString.equals( mSearchTerms ) ) {
      
      mSearchTerms = queryString;

      String[] terms = mSearchTerms.split( "\\s+" );
      
      String mRelevance = "("; 
      
      for ( int i = 0, count = terms.length; i < count; i++ ) {
        
        String term = terms[ i ];
        
        if ( i > 0 ) {
          
          mRelevance += "+";
          
        }
      
        mRelevance += "2 * (" + MediaStore.Audio.Albums.ALBUM + " LIKE '%" + term + "%' )";
        mRelevance += "+ 20 * (" + MediaStore.Audio.Albums.ALBUM + " LIKE '" + term + "%' )";
        mRelevance += "+ 6 * (" + MediaStore.Audio.Albums.ALBUM + " LIKE '% +" + term + "%' )";
        
        mRelevance += "+ (" + MediaStore.Audio.Albums.ARTIST + " LIKE '%" + term + "%' )";
        mRelevance += "+ 10 * (" + MediaStore.Audio.Albums.ARTIST + " LIKE '" + term + "%' )";
        mRelevance += "+ 3 * (" + MediaStore.Audio.Albums.ARTIST + " LIKE '% +" + term + "%' )";
        
      }
      
      mRelevance += ") WEIGHT";
      
      String[] allAlbumsSelection = new String[] {
            
            MediaStore.Audio.Albums.ALBUM,
            MediaStore.Audio.Albums.ARTIST,
            MediaStore.Audio.Albums.NUMBER_OF_SONGS,
            MediaStore.Audio.Albums.ALBUM_ART,
            MediaStore.Audio.Albums._ID,
            mRelevance,
            
          };
        
        //android.util.Log.i( TAG + "@setQuery", "Weight projection: " + mRelevance );
      
        MediaQuery query = new MediaQuery(
          MediaStore.Audio.Albums.EXTERNAL_CONTENT_URI,
          allAlbumsSelection,
          "WEIGHT > 0",
          null,
          "WEIGHT DESC"
          );
      
      setMediaQuery( query );
        
    }
      
  }
  
  @Override public int getCount() {
    
    int count = 0;
    
    if ( null != mCursor ) {
      
      if ( mTruncateAmount <= 0 ) {
        
        count = mCursor.getCount();
        
      } else {
        
        count = ( mCursor.getCount() > mTruncateAmount ? mTruncateAmount : mCursor.getCount() );
        
      }
      
    }
    
    return count;
    
  }
  
  public int hasMore() {
    
    return ( mCursor != null && mTruncateAmount > 0 && mCursor.getCount() > mTruncateAmount ? mCursor.getCount() - mTruncateAmount : 0 );
    
  }
  
  public void setTruncateAmount( int mAmt ) {
    
    mTruncateAmount = mAmt;
    notifyDataSetChanged();
    
  }
  
}

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