jubako-simple-carousels.kt

class SimpleCarouselsActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_jubako_recycler)

        // Set page size to 1 so we can see it loading (descriptions are delayed by 500ms)
        recyclerView.withJubako(this, pageSize(1)).load {
            (0 until 100).forEach { i ->
                addRecyclerView(
                    //
                    // Inflate a view for our carousel
                    //
                    view = { inflater, parent ->
                        inflater.inflate(R.layout.simple_carousel, parent, false)
                    },
                    //
                    // Provide a lambda that will create our carousel item view holder
                    //
                    itemViewHolder = { inflater, parent, _ ->
                        SimpleCarouselItemViewHolder(inflater, parent)
                    },
                    //
                    // Specify the data that will be loaded into the carousel
                    //
                    data = when {
                        i % 2 == 0 -> getNumbersEnglish()
                        else -> getNumbersJapanese()
                    },
                    //
                    // Provide a lambda that will fetch carousel item data by position
                    //
                    itemData = { data, position -> data[position] },
                    //
                    // Specify a lambda that will provide the count of item data in our carousel
                    //
                    itemCount = { data -> data.size },
                    //
                    // Specify a viewBinder that will allow binding between data and item holder
                    //
                    itemBinder = { holder, data ->
                        holder.itemView.findViewById<TextView>(R.id.text).text = data
                    }
                )
            }
        }
    }

    inner class SimpleCarouselItemViewHolder(inflater: LayoutInflater, parent: ViewGroup) :
        RecyclerView.ViewHolder(inflater.inflate(R.layout.simple_carousel_item_text, parent, false))

    companion object {
        fun getNumbersEnglish(): LiveData<List<String>> {
            return object : LiveData<List<String>>() {
                override fun onActive() {
                    GlobalScope.launch(Dispatchers.IO) {
                        delay(500)
                        postValue(listOf("One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight"))
                    }
                }
            }
        }

        fun getNumbersJapanese(): LiveData<List<String>> {
            return object : LiveData<List<String>>() {
                override fun onActive() {
                    GlobalScope.launch(Dispatchers.IO) {
                        delay(500)
                        postValue(listOf("ひとつ", "ふたつ", "みっつ", "よっつ", "いつつ", "むっつ", "ななつ", "やっつ"))
                    }
                }
            }
        }
    }
}