package com.example.dictionary1

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Button
import android.widget.TextView


class MainActivity : AppCompatActivity() {

    private var text1: String = "Hello"
    private var t1: TextView? = null

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

        t1 = findViewById(R.id.textView1)

        val button = findViewById<Button>(R.id.button)
        button?.setOnClickListener()
        {
            t1?.setText(text1)
        }
    }

}