adicionei um botão

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

@@ -17,4 +17,5 @@ class MainActivity : AppCompatActivity() {
             insets
         }
     }
-}
+}
+//bom dia

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

@@ -16,4 +16,12 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
+    <Button
+        android:id="@+id/button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Button"
+        tools:layout_editor_absoluteX="162dp"
+        tools:layout_editor_absoluteY="330dp" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>