将字符串转换为“ uint8list”；到Unit8List [英] convert a String of "uint8list" to a Unit8List

问题描述

我有一个存储在Sqllite中的内存映像，该内存映像已通过toString（）方法转换为String，我想将其转换为Unit8List以便在MemoryImage小部件中显示它

I have a memory image stored in Sqllite converted to String with the toString() method, I want to convert it to Unit8List to display it inside a MemoryImage widget

推荐答案

codeUnits 为您提供 List< int>

Uint8List.fromList（...）将 List< int> 转换为 Uint8List

String.fromCharCodes（...）转换 List< int> 或 Uint8List 到 String

codeUnits gets you a List<int>
Uint8List.fromList(...) converts List<int> to Uint8List
String.fromCharCodes(...) converts List<int> or Uint8List to String

List<int> list = 'xxx'.codeUnits;
Uint8List bytes = Uint8List.fromList(list);
String string = String.fromCharCodes(bytes);

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