SplashActivity.kt

import android.content.Context
import android.os.Bundle
import android.os.Handler
import android.support.v7.app.AppCompatActivity

class SplashActivity: AppCompatActivity() {

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

        scheduleSplashScreen()
    }

    private fun scheduleSplashScreen() {
        val splashScreenDuration = getSplashScreenDuration()
        Handler().postDelayed(
                {
                    // After the splash screen duration, route to the right activities
                    val user = UserDb.getCurrentUser()
                    routeToAppropriatePage(user)
                    finish()
                },
                splashScreenDuration
        )
    }

    private fun getSplashScreenDuration(): Long {
        val sp = getPreferences(Context.MODE_PRIVATE)
        val prefKeyFirstLaunch = "pref_first_launch"
        
        return when(sp.getBoolean(prefKeyFirstLaunch, true)) {
            true -> {
                // If this is the first launch, make it slow (> 3 seconds) and set flag to false
                sp.edit().putBoolean(prefKeyFirstLaunch, false).apply()
                5000
            }
            false -> {
                // If the user has launched the app, make the splash screen fast (<= 1 seconds)
                1000
            }
        }
    }

    private fun routeToAppropriatePage(user: User) {
        // Example routing
        when {
            user == null -> OnboardingActivity.start(this)
            user.hasPhoneNumber() -> EditProfileActivity.start(this)
            user.hasSubscriptionExpired() -> PaymentPlansActivity.start(this)
            else -> HomeActivity.start(this)
        }
    }

}