SplashScreenActivity.kt

package com.wildanfuady.sekolahku

import android.content.Intent
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.os.Handler
import kotlinx.android.synthetic.main.activity_splash_screen.*

class SplashScreenActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_splash_screen)
        // hide action bar
        actionBar?.hide()
        // generate 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, ListActivity::class.java)
                startActivity(intent)
                finish()
            }
        }
        handler.postDelayed(run, 300)
    }
}