如何从 UmmalquraCalendar 单击按钮上的下一个和上一个日期？

Question

The issue is simple, i want get next and previous date from UmmalQuraCalendar on button click and show it in textview (settext). Its easy to show current date in textview, but next and previous im unable to get. Below example code from which i want get them:

        UmmalquraCalendar ca = new UmmalquraCalendar();
        ca.get(Calendar.YEAR);
        ca.get(Calendar.MONTH);
        ca.getDisplayName(Calendar.MONTH,Calendar.LONG, Locale.ENGLISH);
        ca.get(Calendar.DAY_OF_MONTH);
        String dtIslamic = ca.getDisplayName(Calendar.MONTH,Calendar.LONG, Locale.ENGLISH)+"-"+ca.get(Calendar.DAY_OF_MONTH)+"-"+ca.get(Calendar.YEAR);
        mHijriDate.setText(dtIslamic);

Answer 1

Calendar.YEAR / MONTH and so on are int arrays (int[]), so doing ca.get(Calendar.DAY_OF_MONTH) - 1 ; should give you the previous day and +1 the next one