Android: How To Get Default Date/time Format?

Each timezone has it's own date/time formats. Say for e.g., UK >> dd/MM/yyyy US >> M/d/yyyy for more, https://gist.github.com/mlconnor/1887156 I'm sure Androi

Solution 1:

from the above input, improved the answer in kotlin with backward compatibility.

privatefungetDefaultDatePattern(): String {

    returnif (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        DateTimeFormatterBuilder.getLocalizedDateTimePattern(
            FormatStyle.SHORT,
            null,
            IsoChronology.INSTANCE,
            Locale.getDefault()
        )
    } else {
        SimpleDateFormat().toPattern()
    }
}

Solution 2:

DateTimeFormatterBuilder#getLocalizedDateTimePattern

import java.text.DateFormat;
import java.time.LocalDate;
import java.time.chrono.IsoChronology;
import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeFormatterBuilder;
import java.time.format.FormatStyle;
import java.util.Locale;

publicclassMain {
    publicstaticvoidmain(String[] args) {
        for (Locale locale : DateFormat.getAvailableLocales()) {
            StringdatePattern= DateTimeFormatterBuilder.getLocalizedDateTimePattern(FormatStyle.SHORT, null,
                    IsoChronology.INSTANCE, locale);
            System.out.println("Locale: " + locale.getLanguage() + ", Date Format: " + datePattern + ", Today: "
                    + LocalDate.now().format(DateTimeFormatter.ofPattern(datePattern, locale)));
        }
    }
}

Output:

Locale:,Date Format:y-MM-dd,Today:2020-08-25Locale:nn,Date Format:dd.MM.y,Today:25.08.2020Locale:ar,Date Format:d‏/M‏/y,Today:25‏/8‏/2020.........Locale:ccp,Date Format:d/M/yy,Today:25/8/20Locale:br,Date Format:dd/MM/y,Today:25/08/2020