在Android中隐藏Google日历中的特定日期

Question

如何在Google日历中取消选择特定日期。点击按钮我打开日期选择器对话框以选择日期。我需要，用户只能选择星期日。剩余的日子应该是透明的颜色无法选择。我怎么能这样做。

我试过的代码：

         {
        Calendar c = Calendar.getInstance();
        int day = c.get(Calendar.DAY_OF_WEEK);

        if (day !=Calendar.SUNDAY) {
            c.add(Calendar.DAY_OF_WEEK,day);

        }

         dialog = new DatePickerDialog(this, datePickerListener, year, 
         month, day);
         dialog.getDatePicker().setMinDate(System.currentTimeMillis() + 
         (1000 * 60 * 60 * 24));
        dialog.show();

       }


      public DatePickerDialog.OnDateSetListener datePickerListener = new 
       DatePickerDialog.OnDateSetListener() {
    public void onDateSet(DatePicker view, int selectedYear,
                          int selectedMonth, int selectedDay) {
        year = selectedYear;
        month = selectedMonth;
        day = selectedDay;
        TextView tv = (TextView) v1.findViewById(R.id.txtDate);

        tv.setText(new StringBuilder().append(day).append("-")
                .append((month + 1)).append("-").append(year)
                .append(" "));

    }
};