GetxController 数据定义:
final titles = [
{"title": "name1", "content": ""},
{"title": "name2", "content": ""},
{"title": "name3", "content": ""}
].obs;
修改指定的数据值,使用List 的 where方法:
titles.where((item) => item['title'] == 'name1').first['content'] =
“newValue”;