DatePickerDialog.java 文件源码

private DatePickerDialog(@NonNull Context context, @StyleRes int themeResId,
                         @Nullable OnDateSetListener listener, @Nullable Calendar calendar, int year,
                         int monthOfYear, int dayOfMonth) {
    super(context, resolveDialogTheme(context, themeResId));

    final Context themeContext = getContext();
    final LayoutInflater inflater = LayoutInflater.from(themeContext);
    final View view = inflater.inflate(R.layout.date_picker_dialog, null);
    setView(view);

    setButton(BUTTON_POSITIVE, themeContext.getString(android.R.string.ok), this);
    setButton(BUTTON_NEGATIVE, themeContext.getString(android.R.string.cancel), this);
    // FIXME ? setButtonPanelLayoutHint(LAYOUT_HINT_SIDE);

    if (calendar != null) {
        year = calendar.get(Calendar.YEAR);
        monthOfYear = calendar.get(Calendar.MONTH);
        dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH);
    }

    mDatePicker = view.findViewById(R.id.datePicker);
    mDatePicker.init(year, monthOfYear, dayOfMonth, this);
    mDatePicker.setValidationCallback(mValidationCallback);

    mDateSetListener = listener;
}