App.kt

package com.example.navigationplayground

import android.app.Activity
import android.app.Application
import android.content.Intent
import android.os.Bundle
import com.example.user.SelectUserActivity
import com.example.navigation.Navigation
import com.example.contact.ContactFormModule

class App : Application(), Navigation {
    override fun onCreate() {
        super.onCreate()
        ContactFormModule.navigation = this
    }

    override fun start(senderActivity: Activity, screenId: String, extras: Bundle?, requestCode: Int?) {
        val intent = when (screenId) {
            ContactFormModule.GoTo.selectUser -> Intent(senderActivity, SelectUserActivity::class.java)
            else -> return
        }
        extras?.let { intent.putExtras(it) }
        when {
            requestCode != null -> senderActivity.startActivityForResult(intent, requestCode)
            else -> senderActivity.startActivity(intent)
        }
    }
}