如何按日期排序ListView项目

Question

在我的应用程序中,我必须显示一个列表视图,其中显示Date和String值.一个Model类用于向Array列表提供值.Date.Date值是使用Adapter Class中Model类的值派生的.Have显示按日期升序排序的列表视图,并突出显示最接近当前date.highlight的视图.特定视图的背景颜色,其下一个大于或等于当前日期.

BaseAdapter类

 private ArrayList<Model> mListItems;
    private Activity mActivity;
    private LayoutInflater mInflater;
    private Integer[] mListIcons;
    private Date DateOfBirth;
    private int NumberOfMonths;
    private ArrayList<Integer> SottList;
    List<Date> dateList = new ArrayList<Date>();

    public Adapter(Activity mActivity, Date DateOfBirth,ArrayList<VaccinationScheduleModel> mListItems) {
//        super();

        this.mActivity = mActivity;
        this.mListItems=mListItems;
        this.DateOfBirth=DateOfBirth;
        mInflater = (LayoutInflater) mActivity.getLayoutInflater();
    }

    @Override
    public int getCount() {
        return mListItems.size();
    }

    @Override
    public Object getItem(int position) {
        return mListItems.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        if (convertView == null) {
            convertView = mInflater.inflate(R.layout.custom_lv_vacc_schedule,
                    parent, false);
        } else {
            convertView = convertView;
        }

       String  atrNumberOfMonths=mListItems.get(position).getmNumberOfMonths();
        NumberOfMonths = Integer.parseInt(atrNumberOfMonths);
        Calendar cal =  Calendar.getInstance();
        cal.setTime(DateOfBirth);
        cal.add(Calendar.MONTH, NumberOfMonths);
        Date result = cal.getTime();
        dateList.add(result);
        String dayOfTheWeek = (String) android.text.format.DateFormat.format("EEEE", result);//Thursday
        String stringMonth = (String) android.text.format.DateFormat.format("MMM", result); //Jun
        String intMonth = (String) android.text.format.DateFormat.format("MM", result); //06
        String year = (String) android.text.format.DateFormat.format("yyyy", result); //2013
        String day = (String) android.text.format.DateFormat.format("dd", result); //20
        System.out.println("19102015:VaccinationScheduleAdapter" + result);
        TextView txtVaccTitle = (TextView) convertView.findViewById(R.id.txtVaccTitle);
        TextView txtVaccMonth = (TextView) convertView.findViewById(R.id.txtVaccMonth);
        TextView txtVaccDay= (TextView) convertView.findViewById(R.id.txtVaccDay);
        TextView txtVaccYear = (TextView) convertView.findViewById(R.id.txtVaccYear);
        ImageView imgIcon = (ImageView) convertView.findViewById(R.id.imgIcon);
        imgIcon.setBackgroundResource(R.drawable.calendar_icon);
        txtVaccTitle.setText(mListItems.get(position).getmDescription());
        txtVaccMonth.setText(stringMonth);
        txtVaccDay.setText(day);
        txtVaccYear.setText(year);
        Collections.sort(dateList);
        convertView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {




            }
        });

        return convertView;
    }

任何人都可以帮助我吗？先谢谢

Answer 1

在哪里调用适配器类使用:

Collections.sort(mListItems, new CustomComparator()); 
adapter = new YourAdater(this,dateOfBirth, mListItems);
lv.setAdapter(adapter);

您的CustomComparator可能如下所示:

public class CustomComparator implements Comparator<YourObject> {// may be it would be Model
    @Override
    public int compare(YourObject obj1, YourObject obj2) {
        return obj1.getDate().compareTo(obj2.getDate());// compare two objects
    }
}

要突出显示前一行或两行,请在适配器的getView方法中编写此代码.无需在此处进行任何排序.

if(position==0){ // for two rows if(position==0 || position==1)
   convertView.setBackgroudColor(Your Color);
}

希望它能帮到你.如果您遇到任何问题,请发表评论.