lab1

app/src/main/java/com/example/myapplication/MainActivity.kt

@@ -1,20 +1,28 @@
 package com.example.myapplication
 
 import android.os.Bundle
-import androidx.activity.enableEdgeToEdge
-import androidx.appcompat.app.AppCompatActivity
-import androidx.core.view.ViewCompat
-import androidx.core.view.WindowInsetsCompat
+import android.widget.Button
+import android.widget.EditText
+import android.widget.TextView
+import androidx.activity.ComponentActivity
 
-class MainActivity : AppCompatActivity() {
+class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        enableEdgeToEdge()
+
         setContentView(R.layout.activity_main)
-        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
-            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
-            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
-            insets
+
+        val etInput = findViewById<EditText>(R.id.etInput)
+        val btnApply = findViewById<Button>(R.id.btnApply)
+        val tvResult = findViewById<TextView>(R.id.tvResult)
+
+        btnApply.setOnClickListener {
+            val text = etInput.text.toString().trim()
+            if (text.isEmpty()) {
+                tvResult.text = "Введите текст!"
+            } else {
+                tvResult.text = "РЕЗУЛЬТАТ: ${text.uppercase()}"
+            }
         }
     }
 }