sdk/src/com/socialize/LikeUtils.java
public static void isLiked(Activity context, String entityKey, IsLikedListener listener) {
		proxy.getLike(context, entityKey, listener);
	}
public static void isLiked(Activity context, String entityKey, IsLikedListener listener) {
		proxy.getLike(context, entityKey, listener);
	}
Determines if the given entity has been liked by the current user.
@param context The current context.
@param entityKey The entity that was liked.
@param listener listener A listener to handle the result.