@Override
  public boolean onOptionsItemSelected(final MenuItem item) {
    if (item.getItemId() == android.R.id.home) {
      finish();
      return true;
    }
    return super.onOptionsItemSelected(item);
  }
Simple Activity that renders locally stored open source legal info in a text view.
java/com/google/android/apps/authenticator/license/LicenseActivity.java