Room TypeConverter with constructer

Question

I have Room TypeConverter and I need to inject parameter to it\'s constructor

class RoomConverters(moshi Moshi) {

    @TypeConverter
    fun fromUs         


        

Answer 1

You can create Room TypeConverter with constructor parameters from version 2.3.0-alpha03

Release notes:

Room now has APIs for providing instances of type converters such that the app can control their initialization. To mark a type converter that will be provided to Room use the new annotation @ProvidedTypeConverter

https://developer.android.com/jetpack/androidx/releases/room#2.3.0-alpha03

In your case you should add @ProvidedTypeConverter to RoomConverter

@ProvidedTypeConverter    
class RoomConverters(moshi: Moshi)

Create converter at db creation time and pass it to database builder:

val roomConverter = RoomConverters(Moshi())
val db = Room.databaseBuilder()
         .addTypeConverter(roomConverter)
         .build()

Also you can use DI framework e.g. Dagger2