Android menu - on a click each activiy stay behing

Question

I have a menu on my application. The problem is that, when I click on an item, the previous one stays behind. So when I click on the previous button of my phone, the previous activity appears. I don't know what is going wrong with my code.

So this is my code for the menu :

@Override
public boolean onCreateOptionsMenu(Menu menu) {

    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {

    switch (item.getItemId()) {
        case R.id.action_user:
            Intent intent1 = new Intent(TeamActivity.this, UserActivity.class);
            startActivity(intent1);
            return true;
        case R.id.action_team:
            return true;
        case R.id.action_score:
            Intent intent2 = new Intent(TeamActivity.this, ScoreActivity.class);
            startActivity(intent2);
            return true;
        case R.id.action_settings:
            Intent intent3 = new Intent(TeamActivity.this, SettingsActivity.class);
            startActivity(intent3);
            return true;
        case R.id.action_about:
            Intent intent4 = new Intent(TeamActivity.this, AboutActivity.class);
            startActivity(intent4);
            return true;
        default:
            return super.onOptionsItemSelected(item);
    }
}

I hope you understand, and sorry for my bad english

Answer 1

Simply add this.finish(); after each startActivity() before returning true!