Sometimes we need to create an object with a slight modification of some class, without explicitly declaring a new subclass for it. Java handles this case with anonymous inner classes. Kotlin slightly generalizes this concept with object expressions and object declarations. Take a look at the following class:
timelineService.showHomeTimeline().enqueue(object : Callback<List<Tweet>>() { override fun success(result: Result<List<Tweet>>) { rvTimeline.layoutManager = LinearLayoutManager(context) rvTimeline.adapter = TweetAdapter(result.data) { startActivity<TweetDetailActivity>(TWEET_ID to it.id) } } override fun failure(exception: TwitterException) { toast(exception.message.toString()) } })
The object
