Genetic dates between two dates in android

Question

Hi, I am new to android. How to get all dates between two dates in android.

For instance. I have two lines.
String first="2012-07-15";
String second="2012-07-21";

I convert and get dates from these lines.

DateFormat df1 = new SimpleDateFormat("yyyy-MM-dd");
DateFormat df2 = new SimpleDateFormat("MMM dd");
String mydate = df2.format(df1 .parse(first));

This way I get both dates from the first and second rows.

Now I also show all the dates between these two dates. Can anyone help me find this.

Answer 1

it is better not to use any hard-coded values ​​in date calculations. we can rely on java Calendar class methods to accomplish this task

see code

 private static List<Date> getDates(String dateString1, String dateString2) { ArrayList<Date> dates = new ArrayList<Date>(); DateFormat df1 = new SimpleDateFormat("yyyy-MM-dd"); Date date1 = null; Date date2 = null; try { date1 = df1 .parse(dateString1); date2 = df1 .parse(dateString2); } catch (ParseException e) { e.printStackTrace(); } Calendar cal1 = Calendar.getInstance(); cal1.setTime(date1); Calendar cal2 = Calendar.getInstance(); cal2.setTime(date2); while(!cal1.after(cal2)) { dates.add(cal1.getTime()); cal1.add(Calendar.DATE, 1); } return dates; } 

and use it as below

  List<Date> dates = getDates("2012-02-01", "2012-03-01"); for(Date date:dates) System.out.println(date); 

Answer 2

 public class DummyWorks extends Activity { static final long ONE_DAY = 24 * 60 * 60 * 1000L; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); getDatesBetween("03/23/2011","03/28/2011"); } public static void getDatesBetween(String startDate,String endDate) { long from=Date.parse(startDate); long to=Date.parse(endDate); int x=0; while(from <= to) { x=x+1; System.out.println ("Dates : "+new Date(from)); from += ONE_DAY; } System.out.println ("No of Dates :"+ x); } }