Android 时间选择器对话框更改首先显示的时间

Question

我使用下面的代码来创建时间选择器对话框。 但是我想编辑第一次面向用户的时间。 我怎样才能做到这一点？

    private fun show_end_time_picker () {
    val cal = Calendar.getInstance()
    val timeSetListener = TimePickerDialog.OnTimeSetListener { timePicker, hour, minute ->
        cal.set(Calendar.HOUR_OF_DAY, hour)
        cal.set(Calendar.MINUTE, minute)
        end_time = SimpleDateFormat("HH:mm").format(cal.time)
        schedule_end_time_text.setText(end_time)
    }
    TimePickerDialog(
        this.context, timeSetListener, cal.get(Calendar.HOUR_OF_DAY), cal.get(
            Calendar.MINUTE
        ), true
    ).show()
}

Answer 1

试试这个，timePicker 应该从 22:00 开始

    private fun show_end_time_picker () {
        val cal = Calendar.getInstance()
        val hour = 22
        val minute = 0
        val timeSetListener = TimePickerDialog.OnTimeSetListener { timePicker, hour, minute ->
            cal.set(Calendar.HOUR_OF_DAY, hour)
            cal.set(Calendar.MINUTE, minute)
            end_time = SimpleDateFormat("HH:mm").format(cal.time)
            schedule_end_time_text.setText(end_time)
        }
        val tpd = TimePickerDialog(this.context, timeSetListener, hour, minute, true).show()
    }

Answer 2

选择设备时间作为默认时间：--

Calendar c = Calendar.getInstance();
timePicker.setCurrentHour(c.get(Calendar.HOUR));
timePicker.setCurrentMinute(c.get(Calendar.MINUTE));

或者你可以这样做-->

TimePickerDialog(getActivity(), this, 13, 0, false); //means 1:00 PM