实现去哪儿来回机票选择的view

最近有个控件是实现和去哪儿和阿里旅行的app的选择日历效果，反编译没有效果的情况下我自己实现了个，大致的原理是：

上面是产品需要实现的效果，我看了下不就是一个ListView+gridView就能实现么，方案有了，自定义的CalendarView实现对日期的计算，然后可以按ios显示的风格显示日历

public class MyCalendar extends LinearLayout {

    private static Context context;
    private Date theInDay;
    private String inday = "", outday = "";
    private List gvList;//存放天
    private CalGridViewAdapter calAdapter;
    private OnDaySelectListener callBack;//回调函数


    public MyCalendar(Context context) {
        super(context);
        this.context = context;
    }

    public MyCalendar(Context context, AttributeSet attrs) {
        super(context, attrs);
        this.context = context;
    }

    public void setInDay(String inday) {
        this.inday = inday;
    }

    public void setOutDay(String outday) {
        this.outday = outday;
    }

    public void setTheDay(Date dateIn) {
        this.theInDay = dateIn;
        init();
    }

    /**
     * 初始化日期以及view等控件
     */
    private void init() {
        gvList = new ArrayList();//存放天
         Calendar cal = Calendar.getInstance();//获取日历实例
        cal.setTime(theInDay);//cal设置为当天的
        cal.set(Calendar.DATE, 1);//cal设置当前day为当前月第一天
        int tempSum = countNeedHowMuchEmpety(cal);//获取当前月第一天为星期几
        int dayNumInMonth = getDayNumInMonth(cal);//获取当前月有多少天
        setGvListData(tempSum, dayNumInMonth, cal.get(Calendar.YEAR) + "-" + getMonth((cal.get(Calendar.MONTH) + 1)));

        View view = LayoutInflater.from(context).inflate(R.layout.comm_calendar, this, true);//获取布局，开始初始化
        TextView tv_year = (TextView) view.findViewById(R.id.tv_year);
        if (cal.get(Calendar.YEAR) > new Date().getYear()) {
            tv_year.setVisibility(View.VISIBLE);
            tv_year.setText(cal.get(Calendar.YEAR) + "年");
        }
        TextView tv_month = (TextView) view.findViewById(R.id.tv_month);
        tv_month.setText(String.valueOf(theInDay.getMonth() + 1) + "月");
        MyGridView gv = (MyGridView) view.findViewById(R.id.gv_calendar);

        calAdapter  = new CalGridViewAdapter(context,gvList, inday, outday);
        gv.setAdapter(calAdapter);
        gv.setOnItemClickListener(new OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView adapterView, View arg1, int position, long arg3) {
                String choiceDay = (String) adapterView.getAdapter().getItem(position);
                String[] date = choiceDay.split(",");
                String day = date[1];
                if (!" ".equals(day)) {
                    if (Integer.parseInt(day) < 10) {
                        day = "0" + date[1];
                    }
                    choiceDay = date[0] + "-" + day;
                    if (callBack != null) {//调用回调函数回调数据
                        callBack.onDaySelectListener(arg1, choiceDay);
                    }
                }
            }
        });
    }

    /**
     * 为gridview中添加需要展示的数据
     *
     * @param tempSum
     * @param dayNumInMonth
     */
    private void setGvListData(int tempSum, int dayNumInMonth, String YM) {
       if (gvList!=null){
           gvList.clear();
           for (int i = 0; i < tempSum; i++) {
               gvList.add(" , ");
           }
           for (int j = 1; j