Flutter从地图列表只读错误中删除项目

Question

我想从 a 列表中删除一个项目ListView.builder，但它说它是只读的。

List<Map> entries = [{'date': '2019-08-10', 'data': 85.0}, {'date': '2019-08-14', 'data': 84.0}];

onPressed: () {
  removeItem(index);
}

void removeItem(index) {
  entries.removeAt(index);
}

Another exception was thrown: Unsupported operation: read-only

这也不起作用：

onPressed: () {
  removeItem(date);
}

void removeItem(date) {
  entries.removeWhere((item) => item['date'] == date);
}

Answer 1

我从中得到了解决方案，链接

entries = List.from(entries)..removeAt("theIndexValue");