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MainActivity.java

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+package com.example.lifecyclelogger;
+
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.TextView;
+
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Locale;
+import java.util.Set;
+
+public class MainActivity extends AppCompatActivity {
+
+    private TextView lifecycleTextView;
+    private List<String> lifecycleEvents;
+    private SimpleDateFormat sdf;
+    private static final String PREF_NAME = "LifecycleLoggerPrefs";
+    private static final String KEY_LIFECYCLE_EVENTS = "lifecycle_events";
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        lifecycleTextView = findViewById(R.id.lifecycleTextView);
+        sdf = new SimpleDateFormat("HH:mm:ss.SSS", Locale.getDefault());
+
+        // Initialize lifecycle events list
+        lifecycleEvents = new ArrayList<>();
+
+        // Load saved lifecycle events
+        loadLifecycleEvents();
+        updateLifecycleTextView();
+
+        logAndDisplayLifecycleEvent("onCreate");
+    }
+
+    @Override
+    protected void onStart() {
+        super.onStart();
+        logAndDisplayLifecycleEvent("onStart");
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        logAndDisplayLifecycleEvent("onResume");
+    }
+
+    @Override
+    protected void onPause() {
+        super.onPause();
+        logAndDisplayLifecycleEvent("onPause");
+    }
+
+    @Override
+    protected void onStop() {
+        super.onStop();
+        logAndDisplayLifecycleEvent("onStop");
+
+        // Save lifecycle events when the activity is stopped
+        saveLifecycleEvents();
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        logAndDisplayLifecycleEvent("onDestroy");
+    }
+
+    private void logAndDisplayLifecycleEvent(String event) {
+        String timestamp = sdf.format(new Date());
+        String logEntry = timestamp + " - " + event;
+        lifecycleEvents.add(logEntry);
+        updateLifecycleTextView();
+    }
+
+    private void updateLifecycleTextView() {
+        StringBuilder sb = new StringBuilder();
+        for (String e : lifecycleEvents) {
+            sb.append(e).append("\n");
+        }
+        lifecycleTextView.setText(sb.toString());
+    }
+
+    private void saveLifecycleEvents() {
+        SharedPreferences prefs = getSharedPreferences(PREF_NAME, MODE_PRIVATE);
+        SharedPreferences.Editor editor = prefs.edit();
+        Set<String> eventSet = new HashSet<>(lifecycleEvents); // Convert list to set to avoid duplicates
+        editor.putStringSet(KEY_LIFECYCLE_EVENTS, eventSet);
+        editor.apply();
+    }
+
+    private void loadLifecycleEvents() {
+        SharedPreferences prefs = getSharedPreferences(PREF_NAME, MODE_PRIVATE);
+        Set<String> eventSet = prefs.getStringSet(KEY_LIFECYCLE_EVENTS, new HashSet<>());
+        lifecycleEvents = new ArrayList<>(eventSet); // Convert set back to list
+    }
+
+    public void onClearHistoryClicked(View view) {
+        // Clear saved events in SharedPreferences
+        SharedPreferences prefs = getSharedPreferences(PREF_NAME, MODE_PRIVATE);
+        SharedPreferences.Editor editor = prefs.edit();
+        editor.remove(KEY_LIFECYCLE_EVENTS);
+        editor.apply();
+
+        // Clear lifecycle events list
+        lifecycleEvents.clear();
+        updateLifecycleTextView();
+
+        // Add button click event to lifecycle events
+        logAndDisplayLifecycleEvent("Clear History button clicked");
+
+        // Save the new log entry
+        saveLifecycleEvents();
+    }
+}

activity_main.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <TextView
+        android:id="@+id/lifecycleTextView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:textSize="18sp"
+        android:padding="16dp"
+        android:text="Lifecycle events will be displayed here" />
+
+    <Button
+        android:id="@+id/clearHistoryButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Clear History"
+        android:layout_alignParentBottom="true"
+        android:layout_centerHorizontal="true"
+        android:layout_marginBottom="16dp"
+        android:onClick="onClearHistoryClicked" />
+
+</RelativeLayout>