[코틀린코드연습장] 쓰레드(3) ... AsyncTask

음.. 이건 또 뭔가. 

class MainActivity : AppCompatActivity() {



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

        button.setOnClickListener {
            var time = System.currentTimeMillis()
            textView.text = "button Click : ${time}"
        }

        var sync = AsyncTaskClass()
        sync.execute(10, 20)

    }

    inner class AsyncTaskClass : AsyncTask<Int, Long, String>() {
        override fun onPreExecute() {
            super.onPreExecute()
            textView2.text = "AsyncTask 가동"
        }

        override fun doInBackground(vararg params: Int?): String {
            var a1 = params[0]!!
            var a2 = params[1]!!

            for (idx in 0..9) {
                SystemClock.sleep(1000)
                a1++
                a2++

                Log.d("text1", "${idx} :: ${a1} :: ${a2}")

                var time = System.currentTimeMillis()
                publishProgress(time)
            }

            return "수행이 완료되었습니다."
        }

        override fun onProgressUpdate(vararg values: Long?) {
            super.onProgressUpdate(*values)

            textView2.text = "Async : ${values[0]}"

        }

        override fun onPostExecute(result: String?) {
            super.onPostExecute(result)

            textView2.text = result
            
        }
    }
}