如何为下拉菜单中的所选项目应用填充

Question

从下面的代码中，我可以向hint（placeholder）添加填充，但无法为选定的下拉菜单项添加填充

 DropdownButtonHideUnderline(
      child: DropdownButton(
          isExpanded: true,
          hint: Padding(
            padding: const EdgeInsets.only(left: 10),
            child: 'Sort By,
          ),
          items: getDropDownMenuItems(["Name", "Class"]),
          value: myActivity,
          style: TextStyle(color: Colors.green),elevation: 10,
          onChanged: (String value) => {
            setState(() {
              myActivity = value;
            }),
            sortList(value)
          }),
    );


  getDropDownMenuItems(options) {
    var items = List<DropdownMenuItem<String>>();
    for (String option in options) {
      items.add(DropdownMenuItem(value: option, child: Text(option)));
    }
    return items;
  }

我希望左侧下拉列表项的左侧填充

Answer 1

尝试为下拉菜单的子项使用填充

getDropDownMenuItems(options) {
    var items = List<DropdownMenuItem<String>>();
    for (String option in options) {
      items.add(DropdownMenuItem(value: option, child: Padding(
  padding: const EdgeInsets.all(8.0),
  child: Text(option),
);));
    }
    return items;
  }