DatePicker的分割线颜色设置

/**
     *
     * 设置时间选择器的分割线颜色
     * @param datePicker
     */
    private void setDatePickerDividerColor(DatePicker datePicker){
        // Divider changing:

        // 获取 mSpinners
        LinearLayout llFirst       = (LinearLayout) datePicker.getChildAt();

        // 获取 NumberPicker
        LinearLayout mSpinners      = (LinearLayout) llFirst.getChildAt();
        for (int i = ; i < mSpinners.getChildCount(); i++) {
            NumberPicker picker = (NumberPicker) mSpinners.getChildAt(i); 

            Field[] pickerFields = NumberPicker.class.getDeclaredFields();
            for (Field pf : pickerFields) {
                if (pf.getName().equals("mSelectionDivider")) {
                    pf.setAccessible(true);
                    try {
                        pf.set(picker, new ColorDrawable(ResourceUtil.getColor(R.color.com_text_red)));
                    } catch (IllegalArgumentException e) {
                        e.printStackTrace();
                    } catch (NotFoundException e) {
                        e.printStackTrace();
                    } catch (IllegalAccessException e) {
                        e.printStackTrace();
                    }
                    break;
                }
            }
        }
    }