Get number of days in month

Calendar mycal = new GregorianCalendar(1999, 2-1, 1);

// Get the number of days in that month
int daysInMonth = mycal.getActualMaximum(Calendar.DAY_OF_MONTH); // 28

// Try month in a leap year
mycal = new GregorianCalendar(2014, 2-1, 1);
int daysInMonth2= mycal.getActualMaximum(Calendar.DAY_OF_MONTH);  

Toast.makeText(getApplicationContext(), daysInMonth+" "+daysInMonth2,Toast.LENGTH_SHORT).show();