Unicode 字符在 Cloud Firestore 中不起作用

Question

我正在尝试从 Cloud Firestore 中获取 unicode 格式的字符串，并将其显示在我的 Flutter 应用程序中。

c。 10\u{207B}\u{2076} 秒：强子纪元开始：随着宇宙冷却到大约 10\u{00B9}\u{2070} 开尔文，发生夸克-强子转变，夸克结合形成更多复杂粒子——强子。这种夸克限制包括质子和中子（核子）的形成，它们是原子核的组成部分。

当我将它存储为字符串并在 RichText 小部件中显示时，它工作正常：

Widget _buildListItem(BuildContext context, DocumentSnapshot data) {
final record = Record.fromSnapshot(data);
String temp1 = "c. 10\u{207B}\u{2076} seconds: Hadron epoch begins: As the universe cools to about 10\u{00B9}\u{2070} kelvin, a quark-hadron transition takes place in which quarks bind to form more complex particles—hadrons. This quark confinement includes the formation of protons and neutrons (nucleons), the building blocks of atomic nuclei.";

return Padding(
  key: ValueKey(record.name),
  padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 8.0),
  child: Container(
    child: RichText(
      text: TextSpan(text: temp1, style: defaultStyle),
    ),
  ),
);}

而如果我尝试将其存储在云 Firestore 上并使用相同的 RichText 小部件，它就无法正常工作。它只是按原样打印。：

Widget _buildListItem(BuildContext context, DocumentSnapshot data) {
final record = Record.fromSnapshot(data);
//String temp1 = "c. 10\u{207B}\u{2076} seconds: Hadron epoch begins: As the universe cools to about 10\u{00B9}\u{2070} kelvin, a quark-hadron transition takes place in which quarks bind to form more complex particles—hadrons. This quark confinement includes the formation of protons and neutrons (nucleons), the building blocks of atomic nuclei.";

return Padding(
  key: ValueKey(record.name),
  padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 8.0),
  child: Container(
    child: RichText(
      text: TextSpan(text: record.name, style: defaultStyle),
    ),
  ),
);

}

请提供解决方案

Answer 1

按照您希望在小部件中显示的方式存储您的数据 (UTF-8)，不需要在这种情况下使用 unicode。

 TextSpan(text: text, style: defaultStyle)