Merge pull request #404 from Adonai/share-button

Implement share action in Library & NowPlaying

res/values-ru/translatable.xml

@@ -255,6 +255,9 @@
   <string name="autoplaylist_playcounts_name" formatted="false">%d лучших </string>
   <string name="permission_request_summary">Vanilla Music необходимо разрешение на чтение, чтобы отобразить Вашу музыку в фонотеке</string>
   <string name="reverse_sort">в обратном порядке</string>
+  <string name="share">Поделиться…</string>
+  <string name="sendto">Отправить…</string>
+  <string name="no_receiving_apps">Нет подходящих приложений для отправки!</string>
   <!--SD Scanner-->
   <string name="sdscan_help">Запуск сканирования в Vanilla Music приведёт к перестройке всей базы медиаданных.</string>
   <string name="button_start">Начать сканирование</string>

res/values/translatable.xml

@@ -298,6 +298,10 @@ THE SOFTWARE.
 	<string name="permission_request_summary">Vanilla Music needs read permission to display your music library</string>
 	<string name="reverse_sort">Reverse sort</string>
 
+	<string name="share">Share…</string>
+	<string name="sendto">Send to…</string>
+	<string name="no_receiving_apps">No receiving apps found for this media type!</string>
+
 	<!-- SD Scanner -->
 	<string name="sdscan_help">Starting a rescan causes Vanilla Music to trigger a full rebuild of the media database.</string>
 	<string name="button_start">Start Rescan</string>

src/ch/blinkenlights/android/vanilla/FullPlaybackActivity.java

@@ -307,6 +307,7 @@ public class FullPlaybackActivity extends SlidingPlaybackActivity
 		menu.add(0, MENU_ENQUEUE_ARTIST, 30, R.string.enqueue_current_artist);
 		menu.add(0, MENU_ENQUEUE_GENRE, 30, R.string.enqueue_current_genre);
 		menu.add(0, MENU_ADD_TO_PLAYLIST, 30, R.string.add_to_playlist);
+		menu.add(0, MENU_SHARE, 30, R.string.share);
 		mFavorites = menu.add(0, MENU_SONG_FAVORITE, 0, R.string.add_to_favorites).setIcon(R.drawable.btn_rating_star_off_mtrl_alpha).setShowAsActionFlags(MenuItem.SHOW_AS_ACTION_IF_ROOM);
 
 		// ensure that mFavorites is updated
@@ -352,6 +353,9 @@ public class FullPlaybackActivity extends SlidingPlaybackActivity
 				dialog.show(getFragmentManager(), "PlaylistDialog");
 			}
 			break;
+		case MENU_SHARE:
+			MediaUtils.shareMedia(FullPlaybackActivity.this, MediaUtils.TYPE_SONG, song.id);
+			break;
 		case MENU_DELETE:
 			final PlaybackService playbackService = PlaybackService.get(this);
 			final PlaybackActivity activity = this;

src/ch/blinkenlights/android/vanilla/MediaUtils.java

@@ -33,7 +33,11 @@ import java.util.Vector;
 import java.util.zip.CRC32;
 
 import junit.framework.Assert;
+
+import android.content.ActivityNotFoundException;
 import android.content.ContentResolver;
+import android.content.Context;
+import android.content.Intent;
 import android.database.Cursor;
 import android.net.Uri;
 import android.os.Environment;
@@ -42,6 +46,7 @@ import android.text.TextUtils;
 import android.database.MatrixCursor;
 import android.media.MediaMetadataRetriever;
 import android.util.Log;
+import android.widget.Toast;
 
 
 /**
@@ -504,6 +509,40 @@ public class MediaUtils {
 		sAllSongs = null;
 	}
 
+	/**
+	 * Creates and sends share intent across the system. Includes all eligible songs found
+	 * within this type and id (e.g. all songs in album, all songs for this artist etc.)
+	 * @param ctx context to execute resolving on
+	 * @param type media type to look for e.g. {@link MediaUtils#TYPE_SONG}
+	 * @param id id of item to send
+	 */
+	public static void shareMedia(Context ctx, int type, long id) {
+		if (type == TYPE_INVALID || id <= 0) { // invalid
+			return;
+		}
+
+		ContentResolver resolver = ctx.getContentResolver();
+		String[] projection = new String [] { MediaStore.Audio.Media._ID, MediaStore.Audio.Media.DATA };
+		Cursor cursor = buildQuery(type, id, projection, null).runQuery(resolver);
+		if(cursor == null) {
+			return;
+		}
+
+		try {
+			while (cursor.moveToNext()) { // for all songs resolved...
+				File songFile = new File(cursor.getString(1));
+				Intent share = new Intent(Intent.ACTION_SEND);
+				share.setType("audio/*");
+				share.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(songFile));
+				ctx.startActivity(Intent.createChooser(share, ctx.getResources().getString(R.string.sendto)));
+			}
+		} catch (ActivityNotFoundException ex) {
+			Toast.makeText(ctx, R.string.no_receiving_apps, Toast.LENGTH_SHORT).show();
+		} finally {
+			cursor.close();
+		}
+	}
+
 	/**
 	 * Returns the first matching song (or NULL) of given type + id combination
 	 *

src/ch/blinkenlights/android/vanilla/PlaybackActivity.java

@@ -375,6 +375,7 @@ public abstract class PlaybackActivity extends Activity
 	static final int MENU_DELETE = 16;
 	static final int MENU_EMPTY_QUEUE = 17;
 	static final int MENU_ADD_TO_PLAYLIST = 18;
+	static final int MENU_SHARE = 19;
 
 	@Override
 	public boolean onCreateOptionsMenu(Menu menu)