public class Foo extends Activity {
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        Button button = new Button(this);
        button.setOnClickListener(new OnClickListener() {
            public void onClick(View view) {
                startActivity(new Intent(Foo.this, Bar.class));
                finish();
            }
        });

        setContentView(button);
    }

    protected void onDestroy() {
        super.onDestroy();

        Log.e("you're it", "isFinishing() == " + isFinishing());
    }
}

// ---

public class Bar extends Activity {
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        TextView textView = new TextView(this);
        textView.setText("hello, world");

        setContentView(textView);
    }
}