错误：在颤振中找不到类型“ui.TextHeightBehavior”
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【中文标题】错误：在颤振中找不到类型“ui.TextHeightBehavior”【英文标题】：Error: Type 'ui.TextHeightBehavior' not found in flutter 【发布时间】：2020-05-19 06:27:22 【问题描述】：我在终端命令中构建 appbundle 时遇到问题
编译器消息：
../../flutter/packages/flutter/lib/src/widgets/basic.dart:5149:9: Error: Type 'ui.TextHeightBehavior' not found.
final ui.TextHeightBehavior textHeightBehavior;
^^^^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/widgets/text.dart:149:9: Error: Type 'ui.TextHeightBehavior' not found.
final ui.TextHeightBehavior textHeightBehavior;
^^^^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/widgets/text.dart:432:9: Error: Type 'ui.TextHeightBehavior' not found.
final ui.TextHeightBehavior textHeightBehavior;
^^^^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/rendering/paragraph.dart:78:5: Error: Type 'ui.TextHeightBehavior' not found.
ui.TextHeightBehavior textHeightBehavior,
^^^^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/rendering/paragraph.dart:281:3: Error: Type 'ui.TextHeightBehavior' not found.
ui.TextHeightBehavior get textHeightBehavior => _textPainter.textHeightBehavior;
^^^^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/rendering/paragraph.dart:282:26: Error: Type 'ui.TextHeightBehavior' not found.
set textHeightBehavior(ui.TextHeightBehavior value)
^^^^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/painting/text_painter.dart:145:5: Error: Type 'ui.TextHeightBehavior' not found.
ui.TextHeightBehavior textHeightBehavior,
^^^^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/painting/text_painter.dart:346:3: Error: Type 'ui.TextHeightBehavior' not found.
ui.TextHeightBehavior get textHeightBehavior => _textHeightBehavior;
^^^^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/painting/text_painter.dart:347:3: Error: Type 'ui.TextHeightBehavior' not found.
ui.TextHeightBehavior _textHeightBehavior;
^^^^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/painting/text_painter.dart:348:26: Error: Type 'ui.TextHeightBehavior' not found.
set textHeightBehavior(ui.TextHeightBehavior value)
^^^^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/painting/text_style.dart:1070:5: Error: Type 'ui.TextHeightBehavior' not found.
ui.TextHeightBehavior textHeightBehavior,
^^^^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/widgets/basic.dart:5149:12: Error: 'TextHeightBehavior' isn't a type.
final ui.TextHeightBehavior textHeightBehavior;
^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/widgets/text.dart:149:12: Error: 'TextHeightBehavior' isn't a type.
final ui.TextHeightBehavior textHeightBehavior;
^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/widgets/text.dart:200:43: Error: 'TextHeightBehavior' isn't a type.
properties.add(DiagnosticsProperty<ui.TextHeightBehavior>('textHeightBehavior', textHeightBehavior, defaultValue: null));
^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/widgets/text.dart:432:12: Error: 'TextHeightBehavior' isn't a type.
final ui.TextHeightBehavior textHeightBehavior;
^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/widgets/text.dart:487:43: Error: 'TextHeightBehavior' isn't a type.
properties.add(DiagnosticsProperty<ui.TextHeightBehavior>('textHeightBehavior', textHeightBehavior, defaultValue: null));
^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/rendering/paragraph.dart:78:8: Error: 'TextHeightBehavior' isn't a type.
ui.TextHeightBehavior textHeightBehavior,
^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/rendering/paragraph.dart:282:29: Error: 'TextHeightBehavior' isn't a type.
set textHeightBehavior(ui.TextHeightBehavior value)
^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/painting/text_painter.dart:145:8: Error: 'TextHeightBehavior' isn't a type.
ui.TextHeightBehavior textHeightBehavior,
^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/painting/text_painter.dart:347:6: Error: 'TextHeightBehavior' isn't a type.
ui.TextHeightBehavior _textHeightBehavior;
^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/painting/text_painter.dart:348:29: Error: 'TextHeightBehavior' isn't a type.
set textHeightBehavior(ui.TextHeightBehavior value)
^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/painting/text_painter.dart:422:7: Error: No named parameter with the name 'textHeightBehavior'.
textHeightBehavior: _textHeightBehavior,
^^^^^^^^^^^^^^^^^^
org-dartlang-sdk:///flutter/lib/ui/text.dart:865:3: Context: Found this candidate, but the arguments don't match.
ParagraphStyle(
^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/painting/text_style.dart:1070:8: Error: 'TextHeightBehavior' isn't a type.
ui.TextHeightBehavior textHeightBehavior,
^^^^^^^^^^^^^^^^^^
../../flutter/packages/flutter/lib/src/painting/text_style.dart:1091:7: Error: No named parameter with the name 'textHeightBehavior'.
textHeightBehavior: textHeightBehavior,
^^^^^^^^^^^^^^^^^^
org-dartlang-sdk:///flutter/lib/ui/text.dart:865:3: Context: Found this candidate, but the arguments don't match.
ParagraphStyle(
^^^^^^^^^^^^^^
Target kernel_snapshot failed: Exception: Errors during snapshot creation: null
build failed.
FAILURE: Build failed with an exception.
哪里：脚本 '/Users/mac/Downloads/flutter/packages/flutter_tools/gradle/flutter.gradle' 线路：801
* What went wrong:
Execution failed for task ':app:compileFlutterBuildRelease'.
> Process 'command '/Users/mac/Downloads/flutter/bin/flutter'' finished with non-zero exit value 1
**这是我的颤振医生：**
[✓] Flutter (Channel master, v1.14.7-pre.83, on Mac OS X 10.15.2 19C57，区域设置 en-ID） • Flutter 版本 1.14.7-pre.83，位于 /Users/mac/flutter • 框架修订e10df3c1a6（2天前），2020-02-01 11:23:01 +0800 • 引擎版本 e625e174c5 • Dart 版本 2.8.0（构建 2.8.0-dev.6.0 5ae5aff640）
[✓] android 工具链 - 为 Android 设备开发（Android SDK 版本 29.0.2) • Android SDK 位于 /Users/mac/Library/Android/sdk • 未配置 Android NDK 位置（可选；对原生分析支持有用） • 平台 android-29，构建工具 29.0.2 • Java 二进制文件位于：/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java • Java 版 OpenJDK 运行时环境（内部版本 1.8.0_202-release-1483-b49-5587405） • 接受所有 Android 许可证。
[✓] Xcode - 为 ios 和 macOS 开发 (Xcode 11.3.1) • Xcode 位于 /Applications/Xcode.app/Contents/Developer • Xcode 11.3.1，内部版本 11C504 • CocoaPods 1.8.4 版
[✓] Android Studio（版本 3.5） • Android Studio 位于 /Applications/Android Studio.app/Contents • Flutter 插件版本 43.0.1 • Dart 插件版本 191.8593 • Java 版 OpenJDK 运行时环境（内部版本 1.8.0_202-release-1483-b49-5587405）
[✓] IntelliJ IDEA 社区版（2018.2.2 版） • IntelliJ 位于 /Applications/IntelliJ IDEA CE.app • Flutter 插件版本 29.1.3 • Dart 插件版本 182.4129.13
之前我成功地将我的应用上传到 Google Playstore。但是当我想更新我的应用程序时，我遇到了这个问题。之前谢谢你
【问题讨论】：
能否请您显示您的代码而不是错误！！！ 请考虑修改您在此问题中发布的代码示例。就目前而言，它的格式和范围使我们很难为您提供帮助；这是一个great resource，可以帮助您开始。 -1，不要走错路。否决票是我们在这里指出内容问题的方式；改进您的格式和代码示例，我（或有人会）很乐意将其还原。祝你的代码好运！ 【参考方案1】：改变你的颤振大师 在项目的终端写 颤振通道稳定
【讨论】：
【参考方案2】：您好像在使用旧的 Flutter master 频道，修复升级到最新的 stable 频道
按照此命令切换频道：
flutter channel stable
flutter clean
然后运行
flutter upgrade //to ensure you're on the latest.
【讨论】：
【参考方案3】：在您应用的 pubspec.yaml 文件中查找以下行：flutter_widget_from_html 并使用版本 ^ 0.5.1 + 3
例如：flutter_widget_from_html: ^0.5.1+3
然后点击 pub upgrade 并运行您的应用
【讨论】：
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