Ciclo de vida de un Activity

package com.example.prueba;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

Toast.makeText(this, "OnCreate", Toast.LENGTH_SHORT).show();

// Activity creada

}

@Override

protected void onStart() {

super.onStart();

Toast.makeText(this, "OnStart", Toast.LENGTH_SHORT).show();

// Activity antes de hacerse visible

}

@Override

protected void onResume() {

super.onResume();

Toast.makeText(this, "OnResume", Toast.LENGTH_SHORT).show();

// Activity visible (reanuda).

}

@Override

protected void onPause() {

super.onPause();

Toast.makeText(this, "OnPause", Toast.LENGTH_SHORT).show();

// Activity a punto de ser detenida

}

@Override

protected void onStop() {

super.onStop();

Toast.makeText(this, "OnStop", Toast.LENGTH_SHORT).show();

// Activity no visible (detenida)

}

@Override

protected void onDestroy() {

super.onDestroy();

Toast.makeText(this, "OnDestroy", Toast.LENGTH_SHORT).show();

// Activity a punto de ser destruida

}

}