flutter - 如何解决 flutter/dart 中的 Late 问题

Question

我在 flutter 中有这段代码

late String firstHalf;
  late String secondHalf;

  bool hiddenText = true;
  double textHeight = Diamension.screenHeight / 5.63;

  @override
  void iniState() {
    super.initState();
    if (widget.text.length > textHeight) {
      firstHalf = widget.text.substring(0, textHeight.toInt());
      secondHalf =
          widget.text.substring(textHeight.toInt() + 1, widget.text.length);
    } else {
      firstHalf = widget.text;
      secondHalf = "";
    }
  }

从代码中你会看到我初始化了“secondHalf”，但我在调试中不断收到此错误

Exception has occurred.
LateError (LateInitializationError: Field 'secondHalf' has not been initialized.)

Answer 1

除非您将错误复制粘贴到 StackOverflow 中，否则您只是错过了一个t...

尝试将 void iniState() { 更改为 void initState() {

您可能会收到此警告(@julemand101 也指出了这一点):

The method doesn't override an inherited method. Try updating this class to match the superclass, or removing the override annotation.dartoverride_on_non_overriding_member