Android Material DatePicker 中的日期错误

Question

我正在尝试从 DatePicker 获取所选日期，但总是比所选日期少一天

例如，如果我选择 14/2/2022，我将获得 13/2/2022，如果我选择 8/10/2018，我将获得 7/10/2018

这是我的代码：

private fun DatePickerSelected() {
    val picker = MaterialDatePicker.Builder.datePicker()
        .setTitleText("Select date of birth")
        .setSelection(MaterialDatePicker.todayInUtcMilliseconds())
        .build()

    picker.addOnPositiveButtonClickListener {
        val date = Date(picker.selection!!)
        Log.d("Date",date.toString())
        val dateString = SimpleDateFormat("dd/MM/yyyy").format(date)
        binding.edtBirthday.editText?.setText(dateString)
    }

    picker.show(requireActivity().supportFragmentManager, "BirthdayPicker")
}

到底是哪一个问题呢？谢谢！

Answer 1

我使用日历找到了解决方案

picker.addOnPositiveButtonClickListener {
        val utc = Calendar.getInstance(TimeZone.getTimeZone("UTC"))
        utc.timeInMillis = it
        //+1: The first month of the year in the Gregorian and Julian calendars is JANUARY which is 0
        val stringData = "${utc.get(Calendar.DAY_OF_MONTH)}/${utc.get(Calendar.MONTH)+1}/${utc.get(Calendar.YEAR)}"
        binding.edtBirthday.editText?.setText(stringData)
    }