我自己找到了解决该问题的方法。
解决方法是不使用全局样式。相反，我必须编写自己的 DatePickerDialog。
在自定义对话框布局中，我可以使用我想要的 DatePicker 首选项。这看起来像这样：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical">
<DatePicker
android:id="@+id/spinnerDatePicker"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:calendarViewShown="false"
android:datePickerMode="spinner"
android:focusable="true"
android:spinnersShown="true" />
</LinearLayout>
自定义对话框如下所示：
public class SpinnerDatePickerDialog extends DialogFragment {
private ISpinnerDatePickerDialogListener listener;
private DatePicker datePicker;
// this is no clean android fragment constructor, but we want to use it here
@SuppressLint("ValidFragment")
public SpinnerDatePickerDialog(ISpinnerDatePickerDialogListener listener) {
super();
this.listener = listener;
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Build the dialog and set up the button click handlers
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
View view = getActivity().getLayoutInflater().inflate(R.layout.dialog_date, null);
datePicker = (DatePicker) view.findViewById(R.id.spinnerDatePicker);
datePicker.updateDate(defaultYear, defaultMonth, defaultDay);
builder.setView(view);
builder
.setPositiveButton(R.string.submit, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// Send the positive button event back to the host activity
listener.onSpinnerDateDialogPositiveClick(SpinnerDatePickerDialog.this);
}
})
.setNegativeButton(R.string.abort, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// Send the negative button event back to the host activity
listener.onSpinnerDateDialogNegativeClick(SpinnerDatePickerDialog.this);
}
});
return builder.create();
}
}
为了向原始片段发送值，我创建了一个接口。原始片段实现了这个接口，自定义对话框在他的构造函数中获取片段作为参数。这样我就可以在原始片段中触发监听器。
界面：
public interface ISpinnerDatePickerDialogListener {
void onSpinnerDateDialogPositiveClick(SpinnerDatePickerDialog dialog);
void onSpinnerDateDialogNegativeClick(SpinnerDatePickerDialog dialog);
}
调用对话框的片段类：
public class SettingsFragment extends Fragment implements ISpinnerDatePickerDialogListener, ISpinnerTimePickerDialogListener {
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
// initialize listeners for text inputs, to open picker dialogs
periodBegin = (EditText) getView().findViewById(R.id.editPeriodBegin);
periodBegin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showDialog(PERIOD_BEGIN_DIALOG_ID);
}
});
}
/**
* opens dialog for id
*
* @param id
*/
private void showDialog(int id) {
switch(id) {
case PERIOD_BEGIN_DIALOG_ID:
SpinnerDatePickerDialog datePickerDialog;
datePickerDialog = new SpinnerDatePickerDialog(this);
datePickerDialog.show(getFragmentManager(), datePickerDialog.getTAG());
break;
}
@Override
public void onSpinnerDateDialogPositiveClick(SpinnerDatePickerDialog dialog) {
// TODO send DatePicker values with listener
// load DatePicker from dialog and set them to EditText text
DatePicker datePicker = dialog.getDatePicker();
int day = datePicker.getDayOfMonth();
int month = datePicker.getMonth();
int year = datePicker.getYear();
// TODO
String formattedDate = FORMAT.format(new Date(year - 1900, month, day));
periodBegin.setText(formattedDate);
}
@Override
public void onSpinnerDateDialogNegativeClick(SpinnerDatePickerDialog dialog) {
// Nothing to do here
}
}