Kotlin, Hello

New > New Project (include Kotlin Support : check)


Android > Preferences > plugins > Kotlin > install

Code > Convert Java File to Kotlin File

Tools > Kotlin > Configure Kotlin in Project

class MainActivity : AppCompatActivity() {

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

        val v = getVal()
        println("Hello World")
        println("v = $v")

        val textView = findViewById<TextView>(R.id.textview)
        textView.text =v


    }

    private fun getVal():String{
        return "Hello Kotlin!"    

    }

}