如何从具有颤振条件的字符串列表中提取字符串？

Question

I have a list of strings based on google ML kit blocks and i want to get a specific strings in a range between CHECK # 259395 and SUB-TOTAL..

List<String> item = [
      'Line',
       'Restaurant & Cafe',
       'Abdomen',
       '079900000000',
       'VAT# 16669304',
       'TABLE',
       '19-06 2022 12:37',
       'CHECK # 289395 TABLE#',
       '2 MINERAL WATER',
       '1 HOT CHOCOLATE',
       '1 TURKISH COFFEE DOUBLE',
       'SUB-TOTAL',

    ];

I just want to display any item between 'CHECK # 259395' and 'SUB-TOTAL' after i extracted these strings from ML kit blocks, the main idea that i want to get only items without any additional information from the invoice.

The items are 2 MINERAL WATER, 1 HOT CHOCOLATE and 1 TURKISH COFFEE DOUBLE.

Knowing that this data is not static, so it can be changed if i scanned another invoice.

How can i achieve this ?

Answer 1

你可以这样做：

var result = item.sublist(item.indexOf('CHECK # 259395') + 1, item.indexOf('SUB-TOOTAL'));

Answer 2

   print(item[index]);

在您想要的索引位置，如 item[2] 将打印此“1 HOT CHOCOLATE”，

Answer 3

you can easily get like this

item[0]= 'CHECK # 259395',

item[item.length]= 'SUB-TOOTAL',