SplashScreenActivity

class SplashScreenActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_splash_screen)
        // hide app bar
        supportActionBar?.hide()
        // jalankan fungsi update progress
        updateProgress()
    }

    private fun updateProgress(){

        var handler = Handler()
        var run = Runnable {

            var progress: Int = progressbar.progress
            progressbar.progress = progress + 10

            if (progress < 100){
                updateProgress()
            } else {
                val intent = Intent(this, LoginActivity::class.java)
                startActivity(intent)
                finish()
            }
        }
        handler.postDelayed(run, 300)

    }
}