'Compare Two String Date and Time in android?
I have Two String Datetime as follows:
String Date1 = "05-09-2013 10:46:10"
String Date2 = "06-09-2013 10:46:10"
I Need to compare these datetimes and i need result.
Solution 1:[1]
try{
SimpleDateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");
String str1 = "12/10/2013";
Date date1 = formatter.parse(str1);
String str2 = "13/10/2013";
Date date2 = formatter.parse(str2);
if (date1.compareTo(date2)<0)
{
System.out.println("date2 is Greater than my date1");
}
}catch (ParseException e1){
e1.printStackTrace();
}
Solution 2:[2]
You can use following:
public static boolean CheckDates(String startDate, String endDate) {
SimpleDateFormat dfDate = new SimpleDateFormat("dd-MMM-yyyy");
boolean b = false;
try {
if (dfDate.parse(startDate).before(dfDate.parse(endDate))) {
b = true; // If start date is before end date.
} else if (dfDate.parse(startDate).equals(dfDate.parse(endDate))) {
b = true; // If two dates are equal.
} else {
b = false; // If start date is after the end date.
}
} catch (ParseException e) {
e.printStackTrace();
}
return b;
}
Solution 3:[3]
String pattern = "dd-MM-yyyy HH:mm:ss";
SimpleDateFormat dateFormat = new SimpleDateFormat(pattern);
Date one = dateFormat.parse(Date1String);
Date two = dateFormat.parse(Date2String);
Now you have two Date objects, you can compare them.
Solution 4:[4]
You can convert String to Date like this:
String str = "12/12/1912";
SimpleDateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");
Date date = formatter.parse(str);
And back to String
SimpleDateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");
System.out.println("Date is : " + formatter.format(date));
And Date has before and after methods and can be compared to each other.
By the way there is also a library called Joda, you can also check it out.
Solution 5:[5]
Try Joda time for the best result. Its very simple to use.
Solution 6:[6]
public static String CompareDates(String date1, String date2) {
try{
String pattern = "dd-MMM-yyyy HH:mm:ss";
SimpleDateFormat formatter = new SimpleDateFormat(pattern);
Date Date1 = formatter.parse(date1);
Date Date2 = formatter.parse(date2);
if (Date1 != null && Date2 != null) {
if (Date1 .equals(Date2 ))
{
//Both dates are equal.
}
else{
//both date are not equal("use after and before to check occurrence of dates")
}
}catch (Exception e1){
e1.printStackTrace();
}
}
Solution 7:[7]
this snippet explain when we compare two dates in string formats, in other words to date is not allowed when greater than from date.
private void setTodate() {
// TODO Auto-generated method stub
// Process to get Current Date
int fYear, fMonth, fDay;
final Calendar c = Calendar.getInstance();
fYear = c.get(Calendar.YEAR);
fMonth = c.get(Calendar.MONTH);
fDay = c.get(Calendar.DAY_OF_MONTH);
// Launch Date Picker Dialog
DatePickerDialog dpd = new DatePickerDialog(RemindMeDetails.this,
new DatePickerDialog.OnDateSetListener() {
@SuppressLint("SimpleDateFormat")
@Override
public void onDateSet(DatePicker view, int year,
int monthOfYear, int dayOfMonth) {
try{
SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-yyyy");
String fdate=recr_edit_Fromdate.getText().toString();
Date dateFD = formatter.parse(fdate);
String tdate=(dayOfMonth + "-"
+ (monthOfYear + 1) + "-" + year).toString();
Date dateTD = formatter.parse(tdate);
if (dateFD.compareTo(dateTD)<=0)
{
/* System.out.println("tdate is Greater than my fdate");
recr_edit_Todate.setText(dayOfMonth + "-"
+ (monthOfYear + 1) + "-" + year);*/
recr_edit_Todate.setText(tdate);
}
else{
showmessage("Alert", "Start date is not greater than End date");
}catch (ParseException e1){
e1.printStackTrace();
}
}
}, fYear, fMonth, fDay);
dpd.show();
}// method closed
Solution 8:[8]
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Date date1 = sdf.parse("2010-02-22");
Date date2 = sdf.parse("2010-03-23");
int i = date1.compareTo(date2);
switch (i){
case -1: //date1<date2 = -1
return sDate2;
case 1: //date1>date2 = 1
return sDate1;
case 0: //date1==date2= 0
default:
return sDate2;
}
} catch (ParseException e) {
return sDate1;
}
Solution 9:[9]
Simple Code
fun CompareDates(str_date1:String,str_date2:String):Int {
lateinit var date1:Date
lateinit var date2:Date
if (!str_date1.isEmpty()&&!str_date2.isEmpty()) {
val formatter = SimpleDateFormat("dd/MM/yyyy")
date1 = formatter.parse(str_date1)
date2 = formatter.parse(str_date2)
}
return date1.compareTo(date2)
}
Int return type
if (CompareDates() > 0) {
// comes when date1 is higher then date2
} else {
// comes when date2 is higher then date1
}
Solution 10:[10]
In kotlin you can create one common funtion to compare dates.
@SuppressLint("SimpleDateFormat")
fun compareDates(currentDate: String, previousDate: String): Boolean {
val format = SimpleDateFormat("E MMM d h:m:s z yyyy")
val newCurrentDate: Date = format.parse(currentDate)
val newPrevDate: Date = format.parse(previousDate)
if (newPrevDate > newCurrentDate){
return true
}
return false
}
to use above function you can call it like this:
if (compareDates(currDate, PrevDate)) {
//your code
}
Thank You!
Solution 11:[11]
Try this,
String pattern = "<yourPattern>";
SimpleDateFormat dateFormat = new SimpleDateFormat(pattern);
try {
Date one = dateFormat.parse(<yourDate>);
Date two = dateFormat.parse(<yourDate>);
}
catch (ParseException e) {}
Sources
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Source: Stack Overflow