Android Open Source - PlayTunes Lockscreen Manager

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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.service;
/*ww  w  .ja v  a  2  s.  c o  m*/
import android.annotation.SuppressLint;
import android.app.PendingIntent;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.media.AudioManager;
import android.media.MediaMetadataRetriever;
import android.media.RemoteControlClient;
import android.provider.MediaStore;

import com.ideabag.playtunes.R;
import com.ideabag.playtunes.database.MediaQuery;
import com.ideabag.playtunes.media.MusicIntentReceiver;
import com.ideabag.playtunes.media.RemoteControlClientCompat;
import com.ideabag.playtunes.media.RemoteControlClientCompat.MetadataEditorCompat;
import com.ideabag.playtunes.media.RemoteControlHelper;

public class LockscreenManager {
  
  public static final String TAG = "LockscreenManager";
  
  private Context mContext;
  private String mAlbumArtUri = null;
  private String media_id = null;
  
  private boolean isPlaying = false;
  
  // our RemoteControlClient object, which will use remote control APIs available in
    // SDK level >= 14, if they're available.
    RemoteControlClientCompat mRemoteControlClientCompat = null;
    
    // The component name of MusicIntentReceiver, for use with media button and remote control
    // APIs
    ComponentName mMediaButtonReceiverComponent;
    
    private AudioManager mAudioManager;
    
    public LockscreenManager( Context context ) {
      
    if ( android.os.Build.VERSION.SDK_INT >= 14 ) {
      
          if ( mRemoteControlClientCompat == null ) {
            
            mContext = context;
            
            //mAudioManager = ( AudioManager ) mContext.getSystemService( Context.AUDIO_SERVICE );
        //mMediaButtonReceiverComponent = new ComponentName( mContext, MusicIntentReceiver.class );
        //MediaButtonHelper.registerMediaButtonEventReceiverCompat( mAudioManager, mMediaButtonReceiverComponent );
              
            Intent intent = new Intent( mContext, MusicIntentReceiver.class );
              intent.setAction( Intent.ACTION_MEDIA_BUTTON );
              
              //intent.setAction(  );
              mRemoteControlClientCompat = new RemoteControlClientCompat(
                      PendingIntent.getBroadcast(mContext /*context*/,
                              0 /*requestCode, ignored*/, intent /*intent*/, 0 /*flags*/));
              
              RemoteControlHelper.registerRemoteControlClient( mAudioManager, mRemoteControlClientCompat );
              
          }
          
    }
      
    }
    
    
    @SuppressLint("InlinedApi")
  public void play() {
      
      if ( null != mRemoteControlClientCompat ) {
          
      mRemoteControlClientCompat.setPlaybackState( RemoteControlClient.PLAYSTATE_PLAYING );
      
    }
      
      
      
      isPlaying = true;
      
    }
    
    @SuppressLint("InlinedApi")
  public void pause() {
      
    if ( null != mRemoteControlClientCompat ) {
      
      mRemoteControlClientCompat.setPlaybackState( RemoteControlClient.PLAYSTATE_PAUSED );
      
    }
    
    isPlaying = false;
      
    }
    
    public void remove() {
      
    if ( null != mRemoteControlClientCompat ) {
      
      RemoteControlHelper.unregisterRemoteControlClient( mAudioManager, mRemoteControlClientCompat );
      //MediaButtonHelper.unregisterMediaButtonEventReceiverCompat( mAudioManager, mMediaButtonReceiverComponent );
      
      mRemoteControlClientCompat = null;
      
    }
      
    }
    
    public boolean ready() {
      
      return ( null != mRemoteControlClientCompat );
      
    }

  @SuppressLint("InlinedApi")
  public void setMediaID( String id, boolean prev, boolean next ) {
    
    if ( null != mRemoteControlClientCompat && id != null && !id.equals( media_id ) ) {
      
      media_id = id;
      
      MediaQuery mSongQuery = new MediaQuery(
          MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
          new String[] {
            
            MediaStore.Audio.Media.ALBUM,
            MediaStore.Audio.Media.ARTIST,
            MediaStore.Audio.Media.TITLE,
            MediaStore.Audio.Media.ALBUM_ID,
            
          },
          MediaStore.Audio.Media._ID + "=?",
          new String[] {
            
              media_id
            
          },
          null
        );
      
      MediaQuery.executeAsync( mContext, mSongQuery, mCurrentSongQueryListener );
      
          int mFlags = RemoteControlClient.FLAG_KEY_MEDIA_PLAY_PAUSE;
          
          if ( next ) {
            
            mFlags |= RemoteControlClient.FLAG_KEY_MEDIA_NEXT;
            
          }
          
          if ( prev ) {
            
            mFlags |= RemoteControlClient.FLAG_KEY_MEDIA_PREVIOUS;
            
          }
          
          mRemoteControlClientCompat.setTransportControlFlags( mFlags );
  
          // Update the remote controls
          
          
    }
          
  }
  
  MediaQuery.OnQueryCompletedListener mCurrentSongQueryListener = new MediaQuery.OnQueryCompletedListener() {
    
    @SuppressLint("InlinedApi")
    @Override public void onQueryCompleted( MediaQuery mQuery, Cursor mResult ) {

      mResult.moveToFirst();
      
      String mSongTitle = mResult.getString( mResult.getColumnIndex(MediaStore.Audio.Media.TITLE ) );
      String mSongAlbum = mResult.getString( mResult.getColumnIndex(MediaStore.Audio.Media.ALBUM ) );
      String mSongArtist = mResult.getString( mResult.getColumnIndex(MediaStore.Audio.Media.ARTIST ) );
      String album_id = mResult.getString( mResult.getColumnIndexOrThrow( MediaStore.Audio.Media.ALBUM_ID ) );
      
      mResult.close();
      
        MetadataEditorCompat mMetadataEditor;
      mMetadataEditor = mRemoteControlClientCompat.editMetadata( true );
      
          
      mMetadataEditor.putString( MediaMetadataRetriever.METADATA_KEY_ARTIST, mSongArtist );
      mMetadataEditor.putString( MediaMetadataRetriever.METADATA_KEY_ALBUM, mSongAlbum );
      mMetadataEditor.putString( MediaMetadataRetriever.METADATA_KEY_TITLE, mSongTitle );
          
      mMetadataEditor.apply();
      
      // 
      // Don't judge me!
      // 
      // 
      
      mMetadataEditor = mRemoteControlClientCompat.editMetadata( true );
      
          
      mMetadataEditor.putString( MediaMetadataRetriever.METADATA_KEY_ARTIST, mSongArtist );
      mMetadataEditor.putString( MediaMetadataRetriever.METADATA_KEY_ALBUM, mSongAlbum );
      mMetadataEditor.putString( MediaMetadataRetriever.METADATA_KEY_TITLE, mSongTitle );
          
      mMetadataEditor.apply();
      
          
      MediaQuery mAlbumArtQuery = new MediaQuery(
          MediaStore.Audio.Albums.EXTERNAL_CONTENT_URI,
            new String[] {
              
              MediaStore.Audio.Albums.ALBUM_ART,
              MediaStore.Audio.Albums._ID
              
            },
            MediaStore.Audio.Albums._ID + "=?",
          new String[] {
            
            album_id
            
          },
          null
        );
      
      MediaQuery.executeAsync( mContext, mAlbumArtQuery, new MediaQuery.OnQueryCompletedListener() {
        
        @Override public void onQueryCompleted( MediaQuery mQuery, Cursor mResult ) {
          
          mResult.moveToFirst();
          
          String newAlbumUri = mResult.getString( mResult.getColumnIndexOrThrow( MediaStore.Audio.Albums.ALBUM_ART ) );
          mResult.close();
            
          
          MetadataEditorCompat mMetadataEditor = mRemoteControlClientCompat.editMetadata( false );
          
          try {
            
            Bitmap mAlbumArtBitmap = null;
            
            if ( null == newAlbumUri ) {
              
              mAlbumArtBitmap = BitmapFactory.decodeResource( mContext.getResources(), R.drawable.no_album_art_full );
              mMetadataEditor.putBitmap( RemoteControlClientCompat.MetadataEditorCompat.METADATA_KEY_ARTWORK, mAlbumArtBitmap );
              
            } else if ( !newAlbumUri.equals( mAlbumArtUri ) ) {
              
              mAlbumArtBitmap = BitmapFactory.decodeFile( newAlbumUri );
              mMetadataEditor.putBitmap( RemoteControlClientCompat.MetadataEditorCompat.METADATA_KEY_ARTWORK, mAlbumArtBitmap );
              
            }
            
            mMetadataEditor.apply();
            
          } catch (Exception e) {
            e.printStackTrace();
          }
          
        }
        
      });
      
      
      if ( isPlaying ) {
        
        mRemoteControlClientCompat.setPlaybackState( RemoteControlClient.PLAYSTATE_PLAYING );
        
      } else {
        
        mRemoteControlClientCompat.setPlaybackState( RemoteControlClient.PLAYSTATE_PAUSED );
        
      }
      
    }
    
  };
    
}
Java Source Code List
