Question

似乎TimePicker由三个内部NumberPickers组成。是否可以访问它们？需要访问和修改它们中的每一个。

public static class TimePickerFragment extends DialogFragment
            implements TimePickerDialog.OnTimeSetListener {

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {

        TimePicker dialog = new TimePicker(getActivity(), this, 22, 30,
                DateFormat.is24HourFormat(getActivity()));
        // Create a new instance of TimePickerDialog and return it
        return dialog;
    }

    public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
        // Do something with the time chosen by the user
    }
}

在对话框中，我创建了一个TimePicker来显示，但我必须修改TimePicker分钟数列（旋转器）并添加15分钟间隔。我想知道是否有办法单独访问那些NumberPickers。

更新我在下面发布了答案，但是这对我来说是Android内置组件中最难的修改之一，我终于找到了答案并在这里分享了，但idk为什么投票失败了？

Answer 1

最后我找到了解决方案。我在这里获取分钟列，并在那里设置15分钟间隔。

changeTimepicker(R.id.from_time_picker, 15);

方法实现：

try {
            Class<?> rClass = Class.forName("com.android.internal.R$id");
//            Field timePicker = rClass.getField(name);
            TimePicker mTimePicker = (TimePicker) findViewById(id);

            Field m = rClass.getField("minute");

            NumberPicker mMinuteSpinner = (NumberPicker) mTimePicker.findViewById(m.getInt(null));
            mMinuteSpinner.setMinValue(0);
            mMinuteSpinner.setMaxValue((60 / increment) - 1);
            List<String> displayedValues = new ArrayList<String>();
            for (int i = 0; i < 60; i += increment) {
                displayedValues.add(String.format("%02d", i));
            }

            mMinuteSpinner.setDisplayedValues(displayedValues.toArray(new String[0]));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

是否可以在TimePicker中访问号码选择器？

1 个答案: