Update task to TextView protocol

app/src/main/java/ru/myitschool/work/MainActivity.java

@@ -1,20 +1,42 @@
 package ru.myitschool.work;
 
 import android.os.Bundle;
+import android.text.method.ScrollingMovementMethod;
 import android.widget.Toast;
 
 import androidx.annotation.Nullable;
+import androidx.annotation.StringRes;
 import androidx.appcompat.app.AppCompatActivity;
 
+import java.util.ArrayList;
+
 import ru.myitschool.work.databinding.ActivityMainBinding;
 
 public class MainActivity extends AppCompatActivity {
+
+    private ActivityMainBinding binding;
+    private ArrayList<String> protocol = new ArrayList<>();
+
+
+    void logLifecycleState(@StringRes int resourceId) {
+        String text = getString(resourceId);
+        protocol.add(text);
+    }
+
+    void showLog() {
+        StringBuilder s = new StringBuilder();
+        for (String state : protocol) {
+            s.append(state).append("\n");
+        }
+        binding.protocol.setText(s.toString());
+    }
+
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        final ActivityMainBinding binding = ActivityMainBinding.inflate(getLayoutInflater());
+        binding = ActivityMainBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
-        Toast.makeText(this, R.string.ncreate, Toast.LENGTH_LONG).show();
+        binding.protocol.setMovementMethod(new ScrollingMovementMethod());
     }
 
     // Добавьте недостающие методы здесь

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

@@ -1,13 +1,22 @@
 <?xml version="1.0" encoding="utf-8"?>
-<FrameLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
+<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"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
 
     <TextView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_gravity="center"
-        android:text="Hello World!"/>
-
-</FrameLayout>
+        android:id="@+id/protocol"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:scrollbars="vertical"
+        android:text="Протокол\n"
+        android:textAlignment="center"
+        android:textSize="34sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+</androidx.constraintlayout.widget.ConstraintLayout>