manuelernesto

class HomeFragment : StandardFragment() {
  ...
}

class SpeakersFragment : StandardFragment() {
  ...
}

manuelernesto

open class StandardFragment:Fragment(),CoroutineScope {

    private lateinit var job: Job

    override val coroutineContext: CoroutineContext
        get() = job + Dispatchers.Main

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        job = Job()

manuelernesto

@Database(entities = [Palestrante::class], version = 1)
abstract class PalestranteDB: RoomDatabase() {

    abstract fun dao(): PalestranteDAO

    companion object {
        @Volatile
        private var TALK_INSTANCE: PalestranteDB? = null

        fun getDatabase(context: Context): PalestranteDB {

manuelernesto

@Dao
interface PalestranteDAO {
    @Insert
    suspend fun salvar(palestrante: Palestrante)

    @Query("SELECT * FROM tb_palestrante")
    suspend fun buscarTodos(): List<Palestrante>

    @Update
    suspend fun actualizar(palestrante: Palestrante)

manuelernesto

@Entity(tableName = "tb_palestrante")
data class Palestrante(
    @PrimaryKey(autoGenerate = true)
    var id: Int = 0,
    @ColumnInfo(name = "nome_palestrante")
    val palestrante: String,
    val tecnologia: String,
    val topico: String
):Serializable

manuelernesto

apply plugin: 'kotlin-kapt'

manuelernesto

implementation "androidx.room:room-ktx:$room_version"
implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.7"

manuelernesto

implementation "androidx.room:room-ktx:$room_version"
implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.7"

manuelernesto

def room_version = "2.2.5"
implementation "androidx.room:room-runtime:$room_version"
kapt "androidx.room:room-compiler:$room_version"

manuelernesto

class MainActivity : AppCompatActivity() {

    private lateinit var mNavController: NavController

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

        ...