[kotlin]Must be called from main thread of fragment host해결방법

[kotlin]Must be called from main thread of fragment host해결방법

 

onbackpressed 할려고 했더니.. 크래쉬가 난다..

 

val timer = Timer()
timer.schedule(object : TimerTask()
{
override fun run() {
onBackPressed()
}
} , 2000)

 

runOnUiThread {
onBackPressed()
} 

 

바꿔주면 메인 쓰레드에서 동작