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how to get current date and 7thday from current day in android? and I want to show the dates in below format given by the image

In the given image first date is current date with month and day.
and another date is 7th day from current date.
I tried with the below code::
Calendar cal = Calendar.getInstance();
cal.set(Calendar.DAY_OF_WEEK, cal.getFirstDayOfWeek());
SimpleDateFormat sdf = new SimpleDateFormat("EEEE dd.MM.yyyy");
for (int i = 0; i < 7; i++) {
Log.i("dateTag", sdf.format(cal.getTime()));
cal.add(Calendar.DAY_OF_WEEK, 1);
}
tvDate1=(TextView) findViewById(R.id.calender_view1);
tvDate1.setText("" + DateFormat.format("dd/MM/yyyy", System.currentTimeMillis()));
tvDate2=(TextView) findViewById(R.id.calender_view2);
tvDate2.setText("here want to print 7thday");

SimpleDateFormat dateFormat= new SimpleDateFormat("EEEE dd.MM.yyyy");
Calendar currentCal = Calendar.getInstance();
String currentdate=dateFormat.format(currentCal.getTime());
currentCal.add(Calendar.DATE, 7);
String toDate=dateFormat.format(currentCal.getTime());

You need strings for each day, and then use a switch on the DAY_OF_WEEK.

Check This Java Class
import java.util.Calendar;
import java.util.TimeZone;
public class DateAndTimeArithmetic {
public static void main(String args[]){
//Java calendar in default timezone and default locale
Calendar cal = Calendar.getInstance();
cal.setTimeZone(TimeZone.getTimeZone("GMT"));
System.out.println("current date: " + getDate(cal));
//adding days into Date in Java
cal.add(Calendar.DATE, 2);
System.out.println("date after 2 days : " + getDate(cal));
//subtracting days from Date in Java
cal.add(Calendar.DATE, -2);
System.out.println("date before 2 days : " + getDate(cal));
//adding moths into Date
cal.add(Calendar.MONTH, 5);
System.out.println("date after 5 months : " + getDate(cal));
//subtracting months from Date
cal.add(Calendar.MONTH, -5);
System.out.println("date before 5 months : " + getDate(cal));
//adding year into Date
cal.add(Calendar.YEAR, 5);
System.out.println("date after 5 years : " + getDate(cal));
//subtracting year from Date
cal.add(Calendar.YEAR, -5);
System.out.println("date before 5 years : " + getDate(cal));
//date after 200 days from now, takes care of how many days are in month
//for years calendar takes care of leap year as well
cal.add(Calendar.DATE, 200);
System.out.println("date after 200 days from today : " + getDate(cal));
System.out.println("current time in GMT: " + getTime(cal));
//adding hours into Date
cal.add(Calendar.HOUR_OF_DAY, 3);
System.out.println("Time after 3 hours : " + getTime(cal));
//subtracting hours from Date time
cal.add(Calendar.HOUR_OF_DAY, -3);
System.out.println("Time before 3 hours : " + getTime(cal));
//adding minutes into Date time
cal.add(Calendar.MINUTE, 3);
System.out.println("Time after 3 minutes : " + getTime(cal));
//subtracting minutes from Date time
cal.add(Calendar.HOUR_OF_DAY, -3);
System.out.println("Time before 3 minuets : " + getTime(cal));
}
/**
*
* #return current Date from Calendar in dd/MM/yyyy format
* adding 1 into month because Calendar month starts from zero
*/
public static String getDate(Calendar cal){
return "" + cal.get(Calendar.DATE) +"/" +
(cal.get(Calendar.MONTH)+1) + "/" + cal.get(Calendar.YEAR);
}
/**
*
* #return current Date from Calendar in HH:mm:SS format
*
* adding 1 into month because Calendar month starts from zero
*/
public static String getTime(Calendar cal){
return "" + cal.get(Calendar.HOUR_OF_DAY) +":" +
(cal.get(Calendar.MINUTE)) + ":" + cal.get(Calendar.SECOND);
}
}
Output:
current date: 23/7/2012
date after 2 days : 25/7/2012
date before 2 days : 23/7/2012
date after 5 months : 23/12/2012
date before 5 months : 23/7/2012
date after 5 years : 23/7/2017
date before 5 years : 23/7/2012
date after 200 days from today : 8/2/2013
current time in GMT: 6:12:53
Time after 3 hours : 9:12:53
Time before 3 hours : 6:12:53
Time after 3 minutes : 6:15:53
Time before 3 minuets : 3:15:53
And if Need Some More ways to solve your probelem check this stackoverflow post
How can I increment a date by one day in Java?

Issue in convert calendar object to date android

I want to convert calendar object to date as follow.
int year,month,day;
mCalendarEnd = Calendar.getInstance();
year = mCalendarEnd.get(Calendar.YEAR);
month = mCalendarEnd.get(Calendar.MONTH)+1;
day = mCalendarEnd.get(Calendar.DAY_OF_MONTH);
Now convert it to date object
Date d1 = new Date(day,month,year);
when I print date object:
System.out.println("Date : "+d1.getDay()+"/"+d1.getMonth()+"/"+d1.getYear());
it should print current date but in above code it prints the wrong date. Any idea how can I solve this problem? your all suggestion are appreciable.

You need to do it like this
//Set calendar
Calendar calendar = Calendar.getInstance();
Date date1 = calendar.getTime(); // gives a date object
//To get day difference, Just an example
calendar.add(Calendar.DAY_OF_MONTH, -7);
Date date2 = calendar.getTime(); // gives a date object
long differenceInMillis = Date1.getTime() - Date2.getTime();
long differenceInDays = TimeUnit.DAYS.convert(differenceInMillis, TimeUnit.MILLISECONDS);
Or No need of date objects
Calendar calendar = Calendar.getInstance();
long date1InMillis = calendar.getTimeInMillis();
calendar.add(Calendar.DAY_OF_MONTH, -7);
long date2InMillis = calendar.getTimeInMillis();
long differenceInMillis = date1InMillis - date2InMillis;
long differenceInDays = TimeUnit.DAYS.convert(differenceInMillis, TimeUnit.MILLISECONDS);
calendar.getTimeInMillis()

calendar.getTime() returns Date object.
but if you just need today date new Date() returns today date as Date object, too.
Calendar example:
Calendar calendar = Calendar.getInstance()
Log.i("My Tag", "calendar getTime -----> " + calendar.getTime());
Output:
My Tag: calendar getTime -----> Wed Dec 05 13:03:43 GMT+03:30 2018
Date Example:
Log.i("My Tag", "new Date -----> " + new Date());
Output:
My Tag: new Date -----> Wed Dec 05 13:05:38 GMT+03:30 2018
as you see both of them have the same output.

Why you don't use just the calendar?
System.out.println("Date : " + day + "/" + month + "/" + year);
result 1/1/1900
or you want other format? but dont increment the month with 1
System.out.println("Date : " + day + "/" + new DateFormatSymbols().getMonths()[month] + "/" + year);
result 1/January/1900

Put this in your code:
Date d1 = new Date(year, month, day);
System.out.println("Date : " + d1.getDate() + "/" +d1.getMonth() + "/" + d1.getYear());
you will get the correct date.

d1=new Date(year, month, day);
System.out.println("Dt:"+d1.getDate()+"/"+d1.getMonth()+"/"+d1.getYear());

After Converting GMT time date not in 24hour format android code

I was trying to converted user inputed date in GMT time, user inputed date in 24hour format, when i convert in GMT time it show 12 hour problem, How can i get 24 hour formated GMT time
SimpleDateFormat format1 = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
String s = starttDatePicker.getYear() + "-"
+ (starttDatePicker.getMonth() + 1) + "-"
+ starttDatePicker.getDayOfMonth() + " "
+ starttimepicer.getCurrentHour() + ":"
+ starttimepicer.getCurrentMinute() + ":" + "00";
Date parsed = null;
try {
parsed = format1.parse(s);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
TimeZone tz = TimeZone.getTimeZone("GMT");
format1.setTimeZone(tz);
posttime = format1.format(parsed);

Change "yyyy-MM-dd hh:mm:ss" to "yyyy-MM-dd HH:mm:ss"
Just to clarify the documentation for formatting date/times mentions that hh is 12 hour time while HH is 24 hour time.

hh is for 12 hrs format and
HH is for 24 hrs format

Calendar giving HOUR and MINUTE without leading zero - Android

I know a lot of tutorials there about calendar giving minute and hours without leading zero. But those doesnt work for my codes. Can someone help me how to do this base on my codes? Calendar.MINUTE is not showing the zero integer whenever the minite is from 0-9.
Calendar cal = GregorianCalendar.getInstance();
String am_pm, hour;
cal.add(Calendar.MONTH, +1);
if(cal.get(Calendar.AM_PM) == 0)
am_pm = "AM";
else
am_pm = "PM";
tv.setText(cal.get(Calendar.MONTH) + "-" + cal.get(Calendar.DAY_OF_MONTH) + "-" + cal.get(Calendar.YEAR));
tv2.setText(cal.get(Calendar.HOUR) + ":" + cal.get(Calendar.MINUTE) + " " + am_pm);
tv3.setText("Offered");

you can use DateFormat or Simple way to do this is
String month=String.format("%02d",cal.get(Calendar.MONTH));
String day=String.format("%02d",cal.get(Calendar.DAY_OF_MONTH));
String year=String.format("%02d",cal.get(Calendar.YEAR));
tv.setText( month+ "-" + day + "-" +year );

Use DateFormat for text output.
For example:
Calendar cal = GregorianCalendar.getInstance();
String am_pm, hour;
cal.add(Calendar.MONTH, +1);
Date date = cal.getTime();
DateFormat[] formats = new DateFormat[] {
DateFormat.getDateInstance(),
DateFormat.getDateTimeInstance(),
DateFormat.getTimeInstance(),
};
for (DateFormat df : formats) {
System.out.println(df.format(date));
}

Get Date of past 7days from current in android

I am trying to fetch the date 7days prior to today's date.
I am using SimpleDateFormat to fetch today's date.
SimpleDateFormat sdf1 = new SimpleDateFormat("dd/MM/yyyy");
Please guide me through this
Updated answer which I found most useful
SimpleDateFormat sdf=new SimpleDateFormat("dd/MM/yyyy");
String currentDateandTime = sdf.format(new Date());
Date cdate=sdf.parse(currentDateandTime);
Calendar now2= Calendar.getInstance();
now2.add(Calendar.DATE, -7);
String beforedate=now2.get(Calendar.DATE)+"/"+(now2.get(Calendar.MONTH) + 1)+"/"+now2.get(Calendar.YEAR);
Date BeforeDate1=sdf.parse(beforedate);
cdate.compareTo(BeforeDate1);
Thank you for you reply

Use java.util.Calendar, set it to today's date and then subtract 7 days.
Calendar cal = GregorianCalendar.getInstance();
cal.setTime(new Date());
cal.add(Calendar.DAY_OF_YEAR, -7);
Date 7daysBeforeDate = cal.getTime();
Edit: In Java 8 it can be done much easier by using classes from java.time package:
final LocalDate date = LocalDate.now();
final LocalDate dateMinus7Days = date.minusDays(7);
//Format and display date
final String formattedDate = dateMinus7Days.format(DateTimeFormatter.ISO_LOCAL_DATE);
System.out.println(formattedDate);

You can try out this,
import java.util.Calendar;
public class AddDaysToCurrentDate {
public static void main(String[] args) {
//create Calendar instance
Calendar now = Calendar.getInstance();
System.out.println("Current date : " + (now.get(Calendar.MONTH) + 1)
+ "-"
+ now.get(Calendar.DATE)
+ "-"
+ now.get(Calendar.YEAR));
//add days to current date using Calendar.add method
now.add(Calendar.DATE,1);
System.out.println("date after one day : " + (now.get(Calendar.MONTH) + 1)
+ "-"
+ now.get(Calendar.DATE)
+ "-"
+ now.get(Calendar.YEAR));
//substract days from current date using Calendar.add method
now = Calendar.getInstance();
now.add(Calendar.DATE, -10);
System.out.println("date before 10 days : " + (now.get(Calendar.MONTH) + 1)
+ "-"
+ now.get(Calendar.DATE)
+ "-"
+ now.get(Calendar.YEAR));
}
}
/*
Typical output would be
Current date : 12-25-2007
date after one day : 12-26-2007
date before 10 days : 12-15-2007
*/

Android get date before 7 days (one week)
Date myDate = dateFormat.parse(dateString);
And then either figure out how many milliseconds you need to subtract:
Date newDate = new Date(myDate.getTime() - 604800000L); // 7 * 24 * 60 * 60 * 1000
Or use the API provided by the java.util.Calendar class:
Calendar calendar = Calendar.getInstance();
calendar.setTime(myDate);
calendar.add(Calendar.DAY_OF_YEAR, -7);
Date newDate = calendar.getTime();
Then, if you need to, convert it back to a String:
and finally
String date = dateFormat.format(newDate);

you can use this kotlin function to get any date before the current date.
/**
* get specific date before current date
* [day] number of day
* [month] number of month
* [year] number of year
* [count] number of day, month, year
*
* return date
*/
fun getBeforeDate(day: Boolean = false, month: Boolean = false, year: Boolean = false, count: Int = 0): String{
val currentCalendar = Calendar.getInstance()
val myFormat = "dd/MM/yyyy" // you can use your own date format
val sdf = SimpleDateFormat(myFormat, Locale.getDefault())
if (day){
currentCalendar.add(Calendar.DAY_OF_YEAR, -count)
}else if(month){
currentCalendar.add(Calendar.MONTH, -count)
}else if(year){
currentCalendar.add(Calendar.YEAR, -count)
}else{
// if user not provide any value then give current date
currentCalendar.add(Calendar.DAY_OF_YEAR, 0)
// or you can throw Exception
//throw Exception("Please provide at least one value")
}
return sdf.format(currentCalendar.time)
}

fun getBeforeDate(day: Boolean = false, month: Boolean = false, year: Boolean = false, count: Int = 0): String{
val currentCalendar = Calendar.getInstance()
val myFormat = "dd/MM/yyyy" // you can use your own date format
val sdf = SimpleDateFormat(myFormat, Locale.getDefault())
if (day){
currentCalendar.add(Calendar.DAY_OF_YEAR, -count)
}else if(month){
currentCalendar.add(Calendar.MONTH, -count)
}else if(year){
currentCalendar.add(Calendar.YEAR, -count)
}else{
// if user not provide any value then give current date
currentCalendar.add(Calendar.DAY_OF_YEAR, 0)
// or you can throw Exception
//throw Exception("Please provide at least one value")
}
return sdf.format(currentCalendar.time)
}