从安卓系统的DatePickerDialog中删除标题

import android.app.DatePickerDialog;
import android.content.Context;
import android.view.Window;

public class CustomDatePickerDialog extends DatePickerDialog {

    public CustomDatePickerDialog(Context context, OnDateSetListener listener, int year, int month, int dayOfMonth) {
        super(context, listener, year, month, dayOfMonth);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().requestFeature(Window.FEATURE_NO_TITLE);
    }
}

Calendar calendar = Calendar.getInstance();
int year = calendar.get(Calendar.YEAR);
int month = calendar.get(Calendar.MONTH);
int dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH);

DatePickerDialog datePickerDialog = new CustomDatePickerDialog(this, null, year, month, dayOfMonth);
datePickerDialog.show();