Bug: day&month formatting doesn't match current locale

[AndroidDeveloperLB]

In many locales, the way the day&month is shown is different from what is chosen on the library and sample.

It's not always "M/d" as such:

Sometimes it's "d/M", and sometimes the "/" is replaced with something different, like "-" or even "." .

I think this is a better solution to have a numeric formatting of day&month:

/**returns a numeric date format of day&month, based on the current locale.
 * This is important, as the format is different in many countries. Can be "d/M", "M/d", "d-M", "M-d" ,...*/
@JvmStatic
fun getNumericDayAndMonthFormat(context: Context): SimpleDateFormat {
    val defaultDateFormatPattern = "d/M"
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
        val locale = Locale.getDefault()
        var bestDateTimePattern = DateFormat.getBestDateTimePattern(locale, defaultDateFormatPattern)
        //workaround fix for this issue: https://issuetracker.google.com/issues/79311044
        //TODO if there is a better API that doesn't require this workaround, use it. Be sure to check vs all locales, as done here: https://issuetracker.google.com/issues/37044127
        bestDateTimePattern = bestDateTimePattern.replace("d+".toRegex(), "d").replace("M+".toRegex(), "M")
        return SimpleDateFormat(bestDateTimePattern, locale)
    }
    try {
        val dateFormatOrder = DateFormat.getDateFormatOrder(context)
        if (dateFormatOrder.isEmpty())
            return SimpleDateFormat(defaultDateFormatPattern, Locale.getDefault())
        val sb = StringBuilder()
        for (i in dateFormatOrder.indices) {
            val c = dateFormatOrder[i]
            if (Character.toLowerCase(c) == 'y')
                continue
            if (sb.isNotEmpty())
                sb.append('/')
            when (Character.toLowerCase(c)) {
                'm' -> sb.append("M")
                'd' -> sb.append("d")
            }
        }
        val dateFormatString = sb.toString()
        return SimpleDateFormat(dateFormatString, Locale.getDefault())
    } catch (e: Exception) {
        return SimpleDateFormat(defaultDateFormatPattern, Locale.getDefault())
    }
}

Even in my solution I had to have some workaround, because the formatting that Android provides sometimes puts a longer format, as I wrote here. If there is a better solution, please let me know, and check it with all locales. Example of testing of what I wrote can be done as such:

    val date = Date()
    for (locale in Locale.getAvailableLocales()) {
        val bestDateTimePattern = android.text.format.DateFormat.getBestDateTimePattern(locale, "d/M").replace("d+".toRegex(), "d").replace("M+".toRegex(), "M")
        val formattedString = android.text.format.DateFormat.format(bestDateTimePattern, date).toString()
        Log.d("AppLog", "best: locale:$locale bestDateTimePattern:$bestDateTimePattern formatted:$formattedString")
    }

Looking at the results, I think all look ok.

[AndroidDeveloperLB]

Fixed here:
Quivr#97 (comment)