Question

我用时间选择器来选择时间。现在我想要的是我想比较两次。时间选择器代码。

public class TimePickerFragment extends DialogFragment implements
            TimePickerDialog.OnTimeSetListener {
        public int hour;
        public int min;
        public String time;

        @Override
        public Dialog onCreateDialog(Bundle savedInstanceState) {
            // TODO Auto-generated method stub
            final Calendar c = Calendar.getInstance();

            hour = c.get(Calendar.HOUR_OF_DAY);
            min = c.get(Calendar.MINUTE);

            // Create a new instance of DatePickerDialog and return it
            return new TimePickerDialog(getActivity(), this, hour, min, true);

        }

        @Override
        public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
            // TODO Auto-generated method stub
            time = String.valueOf(hourOfDay) + ":" + String.valueOf(minute);

            Intent intent = new Intent();
            intent.putExtra("TIME", time);

            getTargetFragment().onActivityResult(getTargetRequestCode(), 1,
                    intent);
            getDialog().hide();

        }

        public String onTimeSelected() {
            return time;
        }

    }

现在意图我正在以thuis格式计算时间（＆＃34; 22.00＆＃34;）。比较时间我想要这种格式的时间（＆＃34; yyyy-MM-dd HH：mm：ss＆＃ 34）。那么我如何将（＆＃34; 22：00＆＃34;）转换为（＆＃34; yyyy-MM-dd HH：mm：ss＆＃34;）????

我做了什么

try {
                String time = data.getStringExtra("TIME");
                SimpleDateFormat sdf = new SimpleDateFormat(
                        "yyyy-MM-dd HH:mm:ss");
                Date timeCompare;
                timeCompare = sdf.parse(time);
                Date currentTime = new Date();
                int comareResult = timeCompare.compareTo(currentTime);

                if (comareResult == -1) {
                     time = new SimpleDateFormat(" HH:mm").format(date.getTime());
                    etStartTime.setText(time);
                } else {
                    Toast.makeText(mContext, "Your cannot select future time",
                            Toast.LENGTH_SHORT).show();
                }
            } catch (ParseException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

        }

Answer 1

这样做，

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 
String time = String.valueof(sdf.format(c.getTime()));

您将获得所需格式selected的时间。

Answer 2

更改此代码，

@Override
        public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
            // TODO Auto-generated method stub
            time = String.valueOf(hourOfDay) + ":" + String.valueOf(minute);

            Intent intent = new Intent();
            intent.putExtra("TIME", time);

            getTargetFragment().onActivityResult(getTargetRequestCode(), 1,
                    intent);
            getDialog().hide();

        }

通过

 @Override
        public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
            // TODO Auto-generated method stub
            Calendar date = Calendar.getInstance();
                date.set(Calendar.HOUR_OF_DAY, hourOfDay);
                date.set(Calendar.MINUTE, minute);
                date.set(Calendar.AM_PM, date.get(Calendar.AM_PM));

                String time = new SimpleDateFormat("HH:mm").format(date.getTime());
             String time1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(date.getTime());

            Intent intent = new Intent();
            intent.putExtra("TIME", time);

            getTargetFragment().onActivityResult(getTargetRequestCode(), 1,
                    intent);
            getDialog().hide();

        }

希望它会帮助你

Answer 3

试试如下：

private String getDate(String time) {    
    Calendar cal = Calendar.getInstance();
       TimeZone tz = cal.getTimeZone();//get your local time zone.
       SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
       sdf.setTimeZone(tz);//set time zone.
       String localTime = sdf.format(new Date(time) * 1000));
       Date date = new Date();
       try {
            date = sdf.parse(localTime);//get local date
        } catch (ParseException e) {
            e.printStackTrace();
        }
      return date.toString();
    }

希望这会对你有所帮助。

Answer 4

从您看到的代码中，您要求用户输入时间（仅限小时和分钟），然后将意图中的返回值作为String传递。但是你期待一个完整的日期，包括年，月，日，小时，分钟和秒。为此，您应该要求用户分别使用DatePicker和TimePicker输入日期和时间。然后使用Hirak Chhatbar的代码，您可以获得所需的输出格式。

转换时间（hh：mm）为（yyyy-MM-dd HH：mm：ss）

4 个答案: