Simple Splash

SplashActivity.kt

class SplashActivity : Activity() {
  
  private var isUserSessionInitialized = false
  private var hasBeenShownForMinTime = false
  
  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    
    initializeUserSession()
    scheduleProgressBar()
  }
  
  private fun initializeUserSession() {
    userSession.initialize(object : Callback<Unit> {
        override fun onSuccess(result: Unit) = onUserSessionInitialized()
        override fun onError(error: Error) = onUserSessionError(error)
    })
  }
  
  private fun onUserSessionInitialized() {
    isUserSessionInitialized = true
    checkForCompletion()
  }
  
  private fun onUserSessionError(error: Error) {
    showRetryAlert(error,
                   onRetry = { initializeUserSession() },
                   onCancel = { finish() })
  }
  
  private fun scheduleProgressBar() {
    progressBar.postDelayed({
      hasBeenShownForMinTime = true
      checkForCompletion()
      
      progressBar.visibility = View.VISIBLE
    }, MIN_SHOW_TIME)
  }
  
  private fun checkForCompletion() {
    if (isUserSessionInitialized && hasBeenShownForMinTime) {
      setResult(Activity.RESULT_OK)
      finish()
    }
  }
  
}