我试图在DatePickerDialog构造函数中添加一个主题,但这使得DialogFragment全屏,我不希望这样.有谁知道我怎么能让DatePickerDialog看起来像是在Marshmallow之前？

更新1

这是我创建DialogFragment的代码：

DialogFragment ageFragment = new DatePickerDialogFragment();
ageFragment.show(getFragmentManager(),"datePicker");

这是DatePickerDialogFragment中的onCreateDialog：

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    // Use the current date as the default date in the picker if no filters are set
    Calendar cal = Calendar.getInstance();
    // Set the date 18 years prevIoUs,since only 18 and older are allowed on the app
    cal.add(Calendar.YEAR,-18);
    int year,month,day;
    if (iDialogListener.getYear() == -1 || iDialogListener.getMonth() == -1
            || iDialogListener.getDay() == -1) {
        Calendar defaultCal = Calendar.getInstance();
        // 40 is the default age to show
        defaultCal.add(Calendar.YEAR,-40);
        year = defaultCal.get(Calendar.YEAR);
        month = defaultCal.get(Calendar.MONTH);
        day = defaultCal.get(Calendar.DAY_OF_MONTH);
    } else {
        year = iDialogListener.getYear();
        month = iDialogListener.getMonth();
        day = iDialogListener.getDay();
    }

    DatePickerDialog datepicker = new DatePickerDialog(getActivity(),this,year,day);
    datepicker.getDatePicker().setMaxDate(cal.getTimeInMillis());
    Calendar minDate = Calendar.getInstance();
    minDate.set(Calendar.YEAR,Calendar.getInstance().get(Calendar.YEAR) - 100);
    datepicker.getDatePicker().setMinDate(minDate.getTimeInMillis());

    // Create a new instance of DatePickerDialog and return it
    return datepicker;
}

在themes.xml中,唯一触及Dialogs的行是

<item name="android:alertDialogTheme">@style/CustomDialogTheme</item>

但是,如果我正在思考,那不会触及DialogFragment吗？

更新2

这是CustomDialogTheme：

<style name="CustomDialogTheme" parent="@android:style/Theme.Holo.Light.Dialog">
    <item name="android:windowBackground">@android:color/transparent</item>
    <item name="android:windowContentOverlay">@null</item>
    <item name="android:windowMinWidthMajor">@android:dimen/dialog_min_width_major</item>
    <item name="android:windowMinWidthMinor">@android:dimen/dialog_min_width_minor</item>
</style>