[Solved] App crashes in Android Studio using Kotlin

by


You forget to typecast your TextView :

Try with below code :

  val sample_text  : TextView = findViewById<TextView>(R.id.sample_text) as TextView

Full Code :

import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import android.widget.TextView
import kotlinx.android.synthetic.main.activity_main.*

class MainActivity : AppCompatActivity() {


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        val sample_text : TextView = findViewById<TextView>(R.id.sample_text) as TextView
        sample_text .text = "Happy Birthday"
    }
}

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solved App crashes in Android Studio using Kotlin