[android] What is Activity.finish() method doing exactly?

Various answers and notes are claiming that finish() can skip onPause() and onStop() and directly execute onDestroy(). To be fair, the Android documentation on this (http://developer.android.com/reference/android/app/Activity.html) notes "Activity is finishing or being destroyed by the system" which is pretty ambiguous but might suggest that finish() can jump to onDestroy().

The JavaDoc on finish() is similarly disappointing (http://developer.android.com/reference/android/app/Activity.html#finish()) and does not actually note what method(s) are called in response to finish().

So I wrote this mini-app below which logs each state upon entry. It includes a button which calls finish() -- so you can see the logs of which methods get fired. This experiment would suggested that finish() does indeed also call onPause() and onStop(). Here is the output I get:

2170-2170/? D/LIFECYCLE_DEMO? INSIDE: onCreate
2170-2170/? D/LIFECYCLE_DEMO? INSIDE: onStart
2170-2170/? D/LIFECYCLE_DEMO? INSIDE: onResume
2170-2170/? D/LIFECYCLE_DEMO? User just clicked button to initiate finish() 
2170-2170/? D/LIFECYCLE_DEMO? INSIDE: onPause
2170-2170/? D/LIFECYCLE_DEMO? INSIDE: onStop 
2170-2170/? D/LIFECYCLE_DEMO? INSIDE: onDestroy

package com.mvvg.apps.lifecycle;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.Toast;

public class AndroidLifecycle extends Activity {

    private static final String TAG = "LIFECYCLE_DEMO";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Log.d(TAG, "INSIDE: onCreate");
        setContentView(R.layout.activity_main);
        LinearLayout layout = (LinearLayout) findViewById(R.id.myId);
        Button button = new Button(this);
        button.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View view) {
                Toast.makeText(AndroidLifecycle.this, "Initiating finish()",
                        Toast.LENGTH_SHORT).show();
                Log.d(TAG, "User just clicked button to initiate finish()");
                finish();
            }

        });

        layout.addView(button);
    }

    @Override
    protected void onStart() {
        super.onStart();
        Log.d(TAG, "INSIDE: onStart");
    }

    @Override
    protected void onStop() {
        super.onStop();
        Log.d(TAG, "INSIDE: onStop");
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        Log.d(TAG, "INSIDE: onDestroy");
    }

    @Override
    protected void onPause() {
        super.onPause();
        Log.d(TAG, "INSIDE: onPause");
    }

    @Override
    protected void onResume() {
        super.onResume();
        Log.d(TAG, "INSIDE: onResume");
    }

}