颤振数据转换为双精度

Question

我有简单的数据需要转换成双精度。有时它已经是两倍，有时它是整数。

我就是这样的

if (data['status'].toString() == "success") {
  all_rating = double.tryParse(data['over_all_rating']);
  speed_rating = double.tryParse(data['over_speed_rating']);
  break_rating = double.tryParse(data['harsh_braking_rating']);
  concering_rating = double.tryParse(data['harsh_conering_rating']);
  acceleration_rating = double.tryParse(data['harsh_accleration_rating']);
}

数据看起来像这样

{status: success, over_all_rating: 3.25, over_speed_rating: 3.15, harsh_braking_rating: 4.95, harsh_conering_rating: 5, harsh_accleration_rating: 4.95}

但是不知道为什么会显示Unhandled Exception: type 'double' is not a subtype of type 'String'的错误

我正在尝试通过 double.parse 进行转换，所以如果 value 不是 double 它将转换。

Answer 1

像这样使用它： all_rating = double.tryParse(data['over_all_rating'].toString());