Question

在我的活动中，我需要2个日期选择器。不幸的是，我不知道如何编码。由于空间不足，我需要将它们显示为对话框。

这是我拥有的并适用于一个DatePicker：

    public static class DatePickerFragment extends DialogFragment {

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        final Calendar c = Calendar.getInstance();
        int year = c.get(Calendar.YEAR);
        int month = c.get(Calendar.MONTH);
        int day = c.get(Calendar.DAY_OF_MONTH);


        return new DatePickerDialog(getActivity(),
                (DatePickerDialog.OnDateSetListener)
                        getActivity(), year, month, day);

    }

}

 public void datePicker(View view) {
    DatePickerFragment fragment = new DatePickerFragment();
    fragment.show(getSupportFragmentManager(), "date");
}

和相应的监听器：

private void setDate(final Calendar calendar) {
    final DateFormat dateFormat = DateFormat.getDateInstance(DateFormat.MEDIUM);

    date = calendar.getTime();

    Button btn = (Button) findViewById(R.id.date_text);

    dateString = dateFormat.format(calendar.getTime());
    btn.setText(dateString);
    }

现在我需要第二个片段的第二个监听器，但我不知道如何实现它。（片段仅返回已设置侦听器的对话框）\

修改

我提出了想法，但按钮文本仅在第二次尝试后设置：

public void datePicker2 (View view){

    final Calendar c = Calendar.getInstance();
    int year = c.get(Calendar.YEAR);
    int month = c.get(Calendar.MONTH);
    int day = c.get(Calendar.DAY_OF_MONTH);

    DatePickerDialog dialog = new DatePickerDialog(this,listener,year,month,day);

    dialog.show();



    listener = new DatePickerDialog.OnDateSetListener() {

        @Override
        public void onDateSet(DatePicker datePicker, int i, int i1, int i2) {

            Calendar cal = new GregorianCalendar(i, i1, i2);
            setDateTo(cal);
        }
    };

}

 private void setDateTo(final Calendar calendar) {

    final DateFormat dateFormat = DateFormat.getDateInstance(DateFormat.MEDIUM);

    date = calendar.getTime();

    Button btn = (Button) findViewById(R.id.date_to_text);

    dateString = dateFormat.format(calendar.getTime());
    btn.setText(dateString);

}

Answer 1

移动

Button btn = (Button) findViewById(R.id.date_to_text);

到onCreate

一个Activity中有两个DatePickers

1 个答案: