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) } }
}
Актівіті - форма +код
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