将“ uint8list”的字符串转换为Unit8List

Question

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

Answer 1

用于utf8.encode(myString)将字符串转换为字节或List<int>,

\n

然后使用将其转换回来utf8.decode(bytes)

\n

String source = 'B\xc5\x82onie';\n\nList<int> list = utf8.encode(source);\nUint8List bytes = Uint8List.fromList(list);\nString outcome = utf8.decode(bytes);\n

\n

Answer 2

codeUnits让您List<int>
Uint8List.fromList(...)转换List<int>为Uint8List
String.fromCharCodes(...)转换List<int>或转换Uint8List为String

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