public class Processo extends AsyncTask<Void,Date,Date>{
    @Override
    protected Date doInBackground(Void... params) {
        for(int i = 0 ; i < 100; i++){
            Log.i("Log", "i: " + i);
        }
        return null;
    }
}

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.home);
    Processo p = new Processo();
    p.execute();
}