java - 如何从 timepickerdialog 设置系统当前时间的最短时间

Question

我正在使用时间选择器对话框来选择时间，但我最近观察到，当用户选择时间时，它允许用户选择已经过去的时间。示例:如果当前日期是 25-03-2020，时间是下午 5:00，但时间选择器允许选择下午 5:00 以下的时间。

那么我如何提醒用户不要选择当前日期的过去时间。

Answer 1

试试这个

  fun validateStartDate(y: Int, m: Int, d: Int): Boolean {
        val selectedDate = GregorianCalendar(y, m - 1, d).time
        val currentTime = Date(System.currentTimeMillis() - 24 * 60 * 60 * 1000)
        val c = Calendar.getInstance()
        Log.d("d", currentTime.toString())
        c.time = currentTime
        c.add(Calendar.YEAR, 1)
        val newDate = c.time
        Log.d("d", selectedDate.toString())
        val check = selectedDate.before(currentTime) && selectedDate.before(newDate)
        Log.d("D", check.toString())
        return selectedDate.before(currentTime) && selectedDate.before(newDate)
    }

编辑使用Java

  public boolean validateWarrantyDate(int y, int m, int d) {
        Date selectedDate = new GregorianCalendar(y
                , m - 1, d).getTime();
        Date currentTime = new Date(System.currentTimeMillis() - 24 * 60 * 60 * 1000);
        Calendar c = Calendar.getInstance();
        Log.d("d", String.valueOf(currentTime));
        c.setTime(currentTime);
        c.add(Calendar.YEAR, 1);
        Date newDate = c.getTime();
        Log.d("d", String.valueOf(newDate));
        Log.d("d", String.valueOf(selectedDate));
        boolean check = selectedDate.after(currentTime) && selectedDate.before(newDate);
        Log.d("D", String.valueOf(check));
        return selectedDate.after(currentTime) && selectedDate.before(newDate);
    }

希望对您有帮助。