Android Life Cycle with example

Activity: Activity is a single screen representation. Android life cycle. package ads.hk.activitylifecycle; import androidx.annotation.NonNull; import androidx.appcompat.app.AppCompatActivity; import android.content.Intent; import android.os.Bundle; import android.os.PersistableBundle; import android.util.Log; import android.view.View; public class MainActivity extends AppCompatActivity { private static String TAG = "MainActivityLifeCycle"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (savedInstanceState == null){ setContentView(R.layout.activity_main); } Log.d(TAG, "onCreate: "); } @Override protected void onStart() { super.onStart(); Log.d(TAG, "onStart: "); } @Override protected void onRestart() { super.onRestart(); Log.d(TAG, "onRestart: "); } @Override protected void onResume() { super.onResume(); Log.d(TAG, "onResume: "); } @Override protected void onPause() { super.onPause(); Log.d(TAG, "onPause: "); } @Override protected void onStop() { super.onStop(); Log.d(TAG, "onStop: "); } @Override protected void onDestroy() { super.onDestroy(); Log.d(TAG, "onDestroy: "); } @Override public void onSaveInstanceState(@NonNull Bundle outState) { super.onSaveInstanceState(outState); outState.putString("State", "This is saved state data"); Log.d(TAG, "onSaveInstanceState: Sate saved"); } @Override protected void onRestoreInstanceState(@NonNull Bundle savedInstanceState) { super.onRestoreInstanceState(savedInstanceState); Log.d(TAG, "onRestoreInstanceState: "+savedInstanceState.getString("State")); } public void startSecondActivity(View view) { startActivity(new Intent(this,SecondActivty.class)); } }