Compare Date, Calendar or String date in Android
Hello Android Coders,
Today we will bring the code for date comparison for date object, calendar object or string date. For any two date comparison, you have to convert that date(string or calendar object) into date (object).
By Date Object:
Date class has its own methods for date comparison: compareTo
if (date1.compareTo(date2) > 0) {
Log.i("app", "Date1 is after Date2");} else if (date1.compareTo(date2) < 0) {
Log.i("app", "Date1 is before Date2");} else if (date1.compareTo(date2) == 0) {
Log.i("app", "Date1 is equal to Date2");
}
Date class has also methods before and after. Using these methods we can also compare two date:
if(date1.before(date2)){
Log.e("app", "Date1 is before Date2");
}
if(date1.after(date2)){
Log.e("app", "Date1 is after Date2");
}By Calendar Object:
Date date1 = calendar1.getTime();
Date date2 = calendar2.getTime();Then compare both date using compareTo, before(date) or after(date).
By String date:
For String date comparison, make sure both string has same format like yyyy-MM-dd or dd-MM-yyyy or any else. Then parse string date to date object as below:
try {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd", Locale.US);
Date date1 = sdf.parse("2018-08-30");
Date date2 = sdf.parse("2018-08-28");
} catch (Exception e) {
e.printStackTrace();
}Here 2018–08–30 and 2018–08–28 both has same format of yyyy-MM-dd and using this format, we parse both string. Then after parsing string to date objects, compare both dates as same using compareTo, after(date) or before(date).
