更改分隔符颜色不适用于min。 SDK 21

Question

我有一个Android应用程序，我想更改日期选择器的分隔颜色。

这适用于SDK 20。

SDK 21 =＆gt;显示默认的蓝色分隔线 SDK 23 =＆gt;显示灰色分隔符

SDK 15 - 20 =＆gt;显示我的绿色分隔符（正确）

这是我的代码：

// DatePicker Set Divider Color
private void preparePicker() {
    try {
        Field datePickerFields[] = DP.getClass().getDeclaredFields();
        for (Field field : datePickerFields) {
            if ("mSpinners".equals(field.getName())) {
                field.setAccessible(true);
                Object spinnersObj = field.get(DP);
                LinearLayout mSpinners = (LinearLayout) spinnersObj;
                NumberPicker monthPicker = (NumberPicker) mSpinners.getChildAt(0);
                NumberPicker dayPicker = (NumberPicker) mSpinners.getChildAt(1);
                NumberPicker yearPicker = (NumberPicker) mSpinners.getChildAt(2);
                setDividerColor(monthPicker);
                setDividerColor(dayPicker);
                setDividerColor(yearPicker);
                break;
            }
        }
    } catch (Exception ex) {
        Log.e("-->", "Unable to change date dialog");
    }
}

private void setDividerColor(NumberPicker picker) {
    Field[] numberPickerFields = NumberPicker.class.getDeclaredFields();
    for (Field field : numberPickerFields) {
        if (field.getName().equals("mSelectionDivider")) {
            field.setAccessible(true);
            try {
                field.set(picker, getResources().getDrawable(R.drawable.picker_divider));
            } catch (IllegalArgumentException e) {
                Log.e("-->", "Illegal Argument Exception");
                e.printStackTrace();
            } catch (Resources.NotFoundException e) {
                Log.e("-->", "Resources NotFound");
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                Log.e("-->", "Illegal Access Exception");
                e.printStackTrace();
            }