Garyteck

class CryptoAdapter : PagingDataAdapter {
 fun bind(cryptoCurrency : CryptoCurrency?) {

    cryptoCurrency?.let {
      cryptoName.text = it.name
      cryptoSymbol.text = it.symbol
      cryptoPrice.text = ...
    }
 }
}

Garyteck

lifecycleScope.launch {
    cryptoViewModel.cryptos.collectLatest {
        cryptoAdapter.submitData(it)
    }
}

Garyteck

class CryptoViewModel constructor( repository: Repository) : ViewModel() 

    val cryptos : Flow<PagingData<CryptoCurrency>> = repository.getCryptos()

}

// build.gradle file dependencies 
def lifecycle_version = "2.2.0"

implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycle_version"

Garyteck

class Repository(val db: CryptoDatabase, val api : NetworkInterface) {

    fun getCryptos() : Flow<PagingData<CryptoCurrency>> {
        return Pager(
            config = PagingConfig(PAGE_SIZE),
            initialKey = 0,
            remoteMediator = RepositoryMediator(db,api), 
            pagingSourceFactory = { db.cryptoDao().getCryptos() }
        ).flow
    }

Garyteck

@Entity(tableName = "CryptoCurrency")
data class CryptoCurrency(
    @PrimaryKey
    val id: String,
    val changePercent24Hr: String?,
    val marketCapUsd: String?,
    val maxSupply: String?,
    val name: String?,
    val priceUsd: String?,
    val rank: String?,

Garyteck

"data": [
    {
      "id": "bitcoin",
      "rank": "1",
      "symbol": "BTC",
      "name": "Bitcoin",
      "supply": "17193925.0000000000000000",
      "maxSupply": "21000000.0000000000000000",
      "marketCapUsd": "119150835874.4699281625807300",
      "volumeUsd24Hr": "2927959461.1750323310959460",

Garyteck

interface NetworkInterface {

    companion object {
        const val ENDPOINT = "https://api.coincap.io/v2/"
    }

    data class Cryptos (
        val data : List<CryptoCurrency>
    )