【ANDROID STUDIO】Await and Async

 package com.example.coroutine

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import kotlinx.android.synthetic.main.activity_main.*
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext

class MainActivity : AppCompatActivity() {

    private var count = 0

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

        btnCount.setOnClickListener {
            tvCount.text = count++.toString()

        }
        btnDownloadUserData.setOnClickListener {

            CoroutineScope(Dispatchers.IO).launch {

                downloadUserData()
            }

        }
    }

    private suspend fun downloadUserData() {
        for (i in 1..200000) {
            withContext(Dispatchers.Main){
                tvUserMessage.text = "Downloading user $i in ${Thread.currentThread().name}"
            }

        }
    }

}