Android Resource Provider for Presenter in MVP

AndroidResourceProvider.kt

import android.content.Context
import android.support.annotation.*
import android.support.v4.content.ContextCompat
import interface_adapters.ResourceProvider
import javax.inject.Inject
import javax.inject.Named
import javax.inject.Singleton

@Singleton
class AndroidResourceProvider
@Inject constructor(@Named("AppContext") private val context: Context)
    : ResourceProvider {

    override fun getString(@StringRes resourceIdentifier: Int, vararg arguments: Any): String {
        return if (arguments.isNotEmpty())
            context.resources.getString(resourceIdentifier, *arguments)
        else
            context.resources.getString(resourceIdentifier)
    }

    override fun getStringArray(@ArrayRes resourceIdentifier: Int): Array<String> =
            context.resources.getStringArray(resourceIdentifier)

    override fun getInteger(@IntegerRes resourceIdentifier: Int): Int =
            context.resources.getInteger(resourceIdentifier)

    override fun getIntegerArray(@ArrayRes resourceIdentifier: Int): Array<Int> =
            context.resources.getIntArray(resourceIdentifier).toTypedArray()


    override fun getBoolean(@BoolRes resourceIdentifier: Int): Boolean =
            context.resources.getBoolean(resourceIdentifier)

    override fun getColor(@ColorRes resourceIdentifier: Int): Int =
            ContextCompat.getColor(context, resourceIdentifier)

}

ApplicationBindsModule.kt

@Module
abstract class ApplicationBindsModule {

    @Binds
    abstract fun provideAndroidResouce(androidResourceProvider: AndroidResourceProvider): ResourceProvider
    
}

ResourceProvider.kt

interface ResourceProvider {
    fun getString(resourceIdentifier: Int, vararg arguments: Any = arrayOf()): String

    fun getStringArray(resourceIdentifier: Int): Array<String>

    fun getInteger(resourceIdentifier: Int): Int

    fun getIntegerArray(resourceIdentifier: Int): Array<Int>

    fun getBoolean(resourceIdentifier: Int): Boolean

    fun getColor(resourceIdentifier: Int): Int
}

If it is just 'copy file' logic, not persist to file, you can write Helper class in domain layer. I think appContext (provide using DI) will be enough instead of Activity context. If you have more File related logic, then you can have one class for FileHelper, then another for your copy logic/other logics which use FileHelper

@atcarlso

hi. i think i there are some problems with getColor function because some Activities can override Theme of Application(in manifest) as a result you receive the wrong color(