关于java：使用返回不正确布尔值的布尔数组列表反序列化对象

private boolean state;
private boolean repeating;
private int hours;
private int mins;
private ArrayList<Boolean> days;
private final int numdays = 7;

 public alarm_entity(int hoursin, int minsin)
{

    days = new ArrayList<Boolean>();

    state = true;

    repeating = false;

    hours = hoursin;

    mins = minsin;

    initDays();
}

private void initDays()
{

    for(int i = 0 ; i < numdays; i++)

    {

        boolean temp = false;

        days.add(i, temp);

    }
}

public void setDay(int pos, boolean state)
{

    days.add(pos, state);
}

public ArrayList<Boolean> getDays()
{

   return days;
}

public int getMins()
{

    return mins;
}

public void setMins(int minsin)
{

    mins = minsin;
}

public boolean isState() {

    return state;
}

public int getHours()
{

   return hours;
}

public void setHours(int hoursin)
{

    hours = hoursin;
}

public void setState(boolean statein)
{

    state = statein;
}

public boolean getState()
{

    return state;
}
}

    if(alarmfile == null) {

        createFile(Alarm_List.filename);

    }

    try

    {

        fostream = new FileOutputStream(alarmfile);

        oostream = new ObjectOutputStream(fostream);

        addAlarms(alarmlist);

        oostream.close();

        fostream.close();

    }

    catch(Exception ex)

    {

        ex.printStackTrace();

        Log.e("error","write exception");

    }

}

private void addAlarms(final ArrayList alarmlist) {

    Thread mythrd = new Thread(new Runnable() {

        @Override

        public void run() {

            for(alarm_entity alarm : alarmlist)

            {

                try {

                    oostream.writeObject(alarm);

                } catch (IOException e) {

                    e.printStackTrace();

                }

            }

        }

    });

    mythrd.start();

    try {

        mythrd.join();

    } catch (InterruptedException e) {

        e.printStackTrace();

    }

    Log.d("alarms writing","alarms saved");
}