保存完整片段和查看状态

Question

我有很多TextViews的片段。我将4个此片段放入ViewPager选项卡中。我搜索了很多关于保存Fragment状态但是所有人都说要保存单个元素数据然后恢复他们的数据并重新分配TextViews值。但我需要使用其View元素valus保存完整的Fragment状态并完全恢复它，因为重新分配TextViews值非常耗时。谁能告诉我如何保存完整的Fragment状态并恢复它而不需要重新分配值？请谢谢

这是我要完全存储的片段类：

public class SampleFragment extends Fragment{

private TextView[] month_days;
private TextView[] weeks;
private TextView[] week_days;
private TableRow[] tb_row;
private TextView month_name;
protected boolean MONTH_NAME_VISIBILITY = false;
protected boolean WEEK_NUMBER_VISIBILITY = false;
private Configurations conf = new Configurations();
private View rootView;

@Override
public void onCreate(Bundle savedInstanceState) {
    setRetainInstance(true);
    super.onCreate(savedInstanceState);
}

@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

    rootView = inflater.inflate(R.layout.month_view, container, false);



    initialize(this.getActivity());
    setDate();



    return rootView;
}

private void initialize(Context context) {
    month_days = new TextView[42];
    weeks = new TextView[6];
    week_days = new TextView[7];
    tb_row = new TableRow[7];
    month_name = (TextView) rootView.findViewById(R.id.month_name);

    Integer i, j, id;
    for (i = 0; i < 42; i++) {
        id = rootView.getResources().getIdentifier("tv" + (i + 1) + "", "id",conf.getPACKAGE_NAME() );
        month_days[i] = (TextView) rootView.findViewById(id);
    }

    for (i = 0; i < 6; i++) {
        id = rootView.getResources().getIdentifier("tvw" + (i + 1) + "", "id", conf.getPACKAGE_NAME());
        weeks[i] = (TextView) rootView.findViewById(id);
        weeks[i].setTextAppearance(activity, R.style.SmallFontBold);
    }

    for (i = 0; i < 7; i++) {
        id = rootView.getResources().getIdentifier("tvwd" + (i + 1) + "", "id", conf.getPACKAGE_NAME());
        week_days[i] = (TextView) rootView.findViewById(id);
        week_days[i].setText(conf.getDayName()[i]);
        week_days[i].setTextAppearance(activity, R.style.SmallFontBold);
        if (Arrays.asList(conf.getWEEK_FREE_DAYS_INDEX()).contains(String.valueOf(i)))
            week_days[i].setTextColor(Color.RED);
        id = getResources().getIdentifier("row" + (i + 1) + "", "id", conf.getPACKAGE_NAME());
        tb_row[i] = (TableRow) rootView.findViewById(id);
    } 
}

public void setDate() {

    Calendar cal = Calendar.getInstance();
    cal.setFirstDayOfWeek(conf.getCurrentCal().getFirstDayOfWeek());
    Integer i, j = 0, wn, backday, z;
    cal.set(conf.getCurrentCal().get(YEAR), conf.getCurrentCal().get(MONTH), 1);
    backday = ((cal.get(DAY_OF_WEEK)) - cal.getFirstDayOfWeek() + 7) % 7;

    wn = (int) (Math.ceil((backday + cal.getActualMaximum(DAY_OF_MONTH)) / 7.0));

    cal.add(DAY_OF_WEEK, -backday);

    for (i = 0; i < wn * 7; i++) {
        month_days[i].setText(String.valueOf(cal.get(DAY_OF_MONTH)));

        if (Arrays.asList(conf.getWEEK_FREE_DAYS_INDEX()).contains(String.valueOf(cal.get(DAY_OF_WEEK))))
            month_days[i].setTextColor(Color.RED);
        else
            month_days[i].setTextColor(Color.BLACK);

        if (cal.get(MONTH) != conf.getCurrentCal().get(MONTH))
            month_days[i].setTextAppearance(this.getActivity(), R.style.InActiveSmall);
        else
            month_days[i].setTextAppearance(this.getActivity(), R.style.SmallFont);

        cal.add(DAY_OF_MONTH, 1);
    }


    if (WEEK_NUMBER_VISIBILITY) {
        cal.set(conf.getCurrentCal().get(YEAR), conf.getCurrentCal().get(MONTH), 1);
        i = cal.get(WEEK_OF_YEAR);
        z = 0;
        for (j = 0; j < wn; j++) {
            weeks[j].setText(String.valueOf(cal.get(WEEK_OF_YEAR)));
            if ((i == 52) && (z == Calendar.DECEMBER))
                weeks[j].setText(String.valueOf(53));
            weeks[j].setVisibility(VISIBLE);
            i = cal.get(WEEK_OF_YEAR);
            z = cal.get(MONTH);
            cal.add(WEEK_OF_YEAR, 1);
        }
    } else {
        cal.set(conf.getCurrentCal().get(YEAR), conf.getCurrentCal().get(MONTH), 1);
        for (j = 0; j < 6; j++) {
            weeks[j].setVisibility(INVISIBLE);
            cal.add(WEEK_OF_YEAR, 1);
        }
    }

    for (j = 1; j <= 6; j++)
        if (j > wn)
            tb_row[j].setVisibility(INVISIBLE);
        else
            tb_row[j].setVisibility(VISIBLE);


    if (MONTH_NAME_VISIBILITY) {
        month_name.setText(conf.getMonthName()[conf.getCurrentCal().get(MONTH)]);
        month_name.setVisibility(VISIBLE);
    }
    else
        month_name.setVisibility(INVISIBLE);
}

public void setConf(Configurations conf) {
    this.conf.setCurrentCal(conf.getCurrentCal());
    this.conf.setCAL_FIRST_WEEK_DAY(conf.getCAL_FIRST_WEEK_DAY());
    this.conf.setDayName(conf.getDayName());
    this.conf.setMonthName(conf.getMonthName());
    this.conf.setPACKAGE_NAME(conf.getPACKAGE_NAME());
    this.conf.setTodayCal(conf.getTodayCal());
    this.conf.setWEEK_FREE_DAYS_INDEX(conf.getWEEK_FREE_DAYS_INDEX());
}

public void setmonth(Calendar cal){
    Calendar tcal = getInstance();
    tcal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH));
    this.conf.setCurrentCal(tcal);
}
}

Answer 1

过了一会儿没有哥们回答我的问题！所以在不同的网站上搜索了很多，最后我找到了一种完全保存碎片的方法！在这种情况下你应该创建没有UI的片段（here和here）！并在片段上设置setRetainInstance（true）。