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()}"
+            }
         }
     }
 }

app/src/main/res/layout/activity_main.xml

@@ -1,19 +1,27 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/main"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".MainActivity">
+    android:orientation="vertical"
+    android:padding="16dp">
 
-    <TextView
+    <EditText
+        android:id="@+id/etInput"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:hint="Введите текст" />
+
+    <Button
+        android:id="@+id/btnApply"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Hello World!"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        android:layout_marginTop="12dp"
+        android:text="Преобразовать" />
 
-</androidx.constraintlayout.widget.ConstraintLayout>
+    <TextView
+        android:id="@+id/tvResult"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="24dp"
+        android:text="Здесь будет результат"
+        android:textSize="18sp" />
+</LinearLayout>