Merge "Add MediaMetadata equals to make metadata comparisons easier" (12bc5b62) · Commits · e / os / android_frameworks_base

media/java/android/media/MediaMetadata.java

+66 −0

Original line number	Diff line number	Diff line
		@@ -34,6 +34,7 @@ import android.util.SparseArray;
		import java.lang.annotation.Retention;
		import java.lang.annotation.RetentionPolicy;
		import java.util.Set;
		import java.util.Objects;

		/**
		* Contains metadata about an item, such as the title, artist, etc.
		@@ -615,6 +616,71 @@ public final class MediaMetadata implements Parcelable {
		}
		};

		/**
		* Compares the contents of this object to another MediaMetadata object. It
		* does not compare Bitmaps and Ratings as the media player can choose to
		* forgo these fields depending on how you retrieve the MediaMetadata.
		*
		* @param o The Metadata object to compare this object against
		* @return Whether or not the two objects have matching fields (excluding
		* Bitmaps and Ratings)
		*/
		@Override
		public boolean equals(Object o) {
		if (o == this) {
		return true;
		}

		if (!(o instanceof MediaMetadata)) {
		return false;
		}

		final MediaMetadata m = (MediaMetadata) o;

		for (int i = 0; i < METADATA_KEYS_TYPE.size(); i++) {
		String key = METADATA_KEYS_TYPE.keyAt(i);
		switch (METADATA_KEYS_TYPE.valueAt(i)) {
		case METADATA_TYPE_TEXT:
		if (!Objects.equals(getString(key), m.getString(key))) {
		return false;
		}
		break;
		case METADATA_TYPE_LONG:
		if (getLong(key) != m.getLong(key)) {
		return false;
		}
		break;
		default:
		// Ignore ratings and bitmaps when comparing
		break;
		}
		}

		return true;
		}

		@Override
		public int hashCode() {
		int hashCode = 17;

		for (int i = 0; i < METADATA_KEYS_TYPE.size(); i++) {
		String key = METADATA_KEYS_TYPE.keyAt(i);
		switch (METADATA_KEYS_TYPE.valueAt(i)) {
		case METADATA_TYPE_TEXT:
		hashCode = 31 * hashCode + Objects.hash(getString(key));
		break;
		case METADATA_TYPE_LONG:
		hashCode = 31 * hashCode + Long.hashCode(getLong(key));
		break;
		default:
		// Ignore ratings and bitmaps when comparing
		break;
		}
		}

		return hashCode;
		}

		/**
		* Use to build MediaMetadata objects. The system defined metadata keys must
		* use the appropriate data type.