字符串比较器，例如按照时间的升序降序，或者姓氏排序

使用Collections.sort函数。

/**
 * Created by victory on 2016/11/17.
 * 政务适配器
 */

public class GovernmentAdapter extends ArrayAdapter<GovernmentInfo> {
    private ArrayList<GovernmentInfo> originalInfo;
    private Context context;

    public GovernmentAdapter(Context context, ArrayList<GovernmentInfo> items) {
        super(context, 0, items);
        this.context = context;
        this.originalInfo = items;
    }

    @Override
    public View getView(int index, View view, ViewGroup arg2) {
        ViewHoulder houlder = null;
        if (view == null) {
            houlder = new ViewHoulder();
            view = LayoutInflater.from(context).inflate(R.layout.listitem_government, null);
            houlder.mtxtActiName = (TextView) view.findViewById(R.id.txtActivityName);
            houlder.mtxtActivityAddress = (TextView) view.findViewById(R.id.txtActivityAddress);
            houlder.mtxtStartTime = (TextView) view.findViewById(R.id.txtStartTime);
            houlder.mtxtLeader = (TextView) view.findViewById(R.id.txtLeader);
//            houlder.mtxtActivityType = (TextView) view.findViewById(R.id.txtActivityType);
            houlder.mtxtGovernmentType = (TextView) view.findViewById(R.id.txtGovernmentType);
            view.setTag(houlder);
        } else {
            houlder = (ViewHoulder) view.getTag();
        }
/**
 * 字符串比较器，按照时间的升序（o1.getStartTime().compareTo(o2.getStartTime())）
 * 降序（o2.getStartTime().compareTo(o1.getStartTime())）
 */
        Collections.sort(originalInfo, new Comparator<GovernmentInfo>() {
            @Override
            public int compare(GovernmentInfo o1, GovernmentInfo o2) {
                if (!o1.getStartTime().equals(o2.getStartTime())) {
                    return o2.getStartTime().compareTo(o1.getStartTime());
                }
                return 0;
            }
        });

        GovernmentInfo item = originalInfo.get(index);
        if (item != null) {
            houlder.mtxtActiName.setText(item.getTitle());
            houlder.mtxtActivityAddress.setText(item.getLocation());
            houlder.mtxtStartTime.setText(item.getTime());
//            houlder.mtxtActivityType.setText(item.getType());
            houlder.mtxtGovernmentType.setText(item.getStatus());

            houlder.mtxtGovernmentType.setBackgroundResource(R.drawable.tv_circular);
            /**
             * 在使用shape的同时，用代码修改shape的颜色属性
             * 一个view只能设置一个background，每设置一次Background，另一个Background就会就会被替换掉
             *所以用下面这个函数来进行多个设置
             */
            GradientDrawable myGrad = (GradientDrawable) houlder.mtxtGovernmentType.getBackground();
            if (item.getStatus().equals("登记")) {
                myGrad.setColor(context.getResources().getColor(R.color.theme_color_primary_light));
            } else {
                myGrad.setColor(context.getResources().getColor(R.color.zong));
            }
            List<PeopleInfo> list = item.getLaders();
//                houlder.mtxtLeader.setAdapter(new NameAdapter(x.app(), list));String leadernames = null;
            String leadernames = null;
            int size = list.size();
            for (int i = 0; i < size; i++) {
                if (i == 0)
                    leadernames = list.get(i).getName();
                else
                    leadernames = leadernames + "," + list.get(i).getName();
            }
            if (leadernames != null) {
                houlder.mtxtLeader.setText(leadernames);
            }
        }

        return view;
    }

    public final class ViewHoulder {
        private TextView mtxtActiName;//活动名称
        private TextView mtxtActivityAddress;//活动地点
        private TextView mtxtStartTime;//开始时间
        private TextView mtxtLeader;//出席领导
        //        private TextView mtxtActivityType;//活动类型
        private TextView mtxtGovernmentType;//登记类型
    }
}