深海游弋的鱼 – 默默的点滴

Flutter各版本对操作系统的支持情况

Flutter 3.3

32-bit iOS deprecation

As we announced earlier with the 3.0 stable release, due to decreased usage, that release was the last one to support 32-bit iOS devices and iOS versions 9 and 10. This change affects the iPhone 4S, iPhone 5, iPhone 5C, and the 2nd, 3d, and 4th generation iPad devices. The 3.3 stable version of Flutter and all following stable releases no longer support 32-bit iOS devices and iOS versions 9 and 10. This means that apps built against Flutter 3.3 and later won’t run on those devices.

Sunsetting macOS 10.11 and 10.12

In the Q4 2022 stable release, we expect to drop support for macOS versions 10.11 and 10.12. This means that apps built against stable Flutter SDKs after that point will no longer work on these versions, and the minimum macOS version supported by Flutter will increase to 10.13 High Sierra.

Bitcode deprecation

Bitcode will no longer be accepted for iOS app submission in the upcoming Xcode 14 release, and projects with bitcode enabled will emit a build warning in this version of Xcode. In light of this, Flutter will drop support for bitcode in a future stable release.

By default, Flutter apps don’t have bitcode enabled, and we don’t expect this to impact many developers. However, if you have enabled bitcode manually in your Xcode project, disable it as soon as you upgrade to Xcode 14. You can do so by opening ios/Runner.xcworkspace and setting the build setting Enable Bitcode to No. Add-to-app developers should disable it in the host Xcode project.

See Apple’s documentation to learn more about bitcode distribution.

Flutter 3.7

Supported platforms

As of the current release, Flutter supports the following platforms as part of Google-tested and best-effort platform tier:

Platform	Version	Channels
Android	API 16 (Android 4.1) & above	All
iOS	iOS 11 & above	All
Linux	Debian, 64-bit	All
macOS	El Capitan (10.11) & above	All
Web	Chrome 84 & above	All
Web	Firefox 72.0 & above	All
Web	Safari on El Capitan & above	All
Web	Edge 1.2.0 & above	All
Windows	Windows 7 & above, 64-bit	All

All channels include master, beta, and stable channels.

Google-tested platforms

Platform	Version
Android	Android SDK 19–30*
iOS	14-15
Linux	Debian 10
Linux	Ubuntu 18.04 LTS
macOS	Monterey (12) & above
Web	Chrome 84
Web	Firefox 72.0
Web	Safari / Catalina
Web	Edge 1.2.0
Windows	Windows 10

* Passing tests on Android SDK 19 also confers a passing result on SDK 20. This is because Android SDK 20 has additional support for Android Wear, but otherwise no new or deprecated API.

Best-effort platforms

Platform	Version
Android	Android SDK 16–18
iOS	iOS 11-13
Linux	Debian 11
Linux	Debian 9 & below
Linux	Ubuntu 20.04
Linux	Ubuntu 22.04 (Aspirational Google-tested platform)
macOS	El Capitan (10.11) - Big Sur (11)*
Windows	Windows 11 (Aspirational Google-tested platform)
Windows	Windows 8
Windows	Windows 7

* Flutter 3.3 is the last stable release with macOS 10.11 through 10.13 best-effort support.

Unsupported platforms

Platform	Version
Android	Android SDK 15 & below
iOS	iOS 10 & below and `arm7v` 32-bit iOS
Linux	Any 32-bit platform
macOS	Yosemite (10.10) & below
Windows	Windows Vista & below
Windows	Any 32-bit platform

Flutter 3.24.5

目标平台	目标架构	支持版本	CI 测试版本	不支持版本
Android SDK	x64, Arm32, Arm64	21 至 34	21 至 34	20 和更早版本
iOS	Arm64	12 至 18	17	11 和更早版本
macOS	x64, Arm64	Mojave (10.14) 至 Sequoia (15)	Ventura (13), Sonoma (14)	High Sierra (10.13) 和更早版本
Windows	x64, Arm64	10, 11	10	8 和更早版本
Debian (Linux)	x64, Arm64	10, 11, 12	11, 12	9 和更早版本
Ubuntu (Linux)	x64, Arm64	20.04 LTS 至 24.04 LTS	20.04 LTS, 22.04 LTS	23.10 和更早的非 LTS 版本
Chrome (Web)	JavaScript, WebAssembly	最新的 2 个	119, 125	95 和更早版本
Firefox (Web)	JavaScript	最新的 2 个	132	98 和更早版本
Safari (Web)	JavaScript	15.6 和更新版本	15.6	15.5 和更早版本
Edge (Web)	JavaScript, WebAssembly	最新的 2 个	119, 125	95 和更早版本

Flutter 3.27.0

目标平台	目标架构	支持版本	CI测试版本	不支持版本
Android SDK	x64, Arm32, Arm64	21 to 34	21 to 34	20 and earlier
iOS	Arm64	12 to 18	17	11 and earlier
macOS	x64, Arm64	Mojave (10.14) to Sequoia (15)	Ventura (13), Sonoma (14)	High Sierra (10.13) and earlier
Windows	x64, Arm64	10, 11	10	8 and earlier
Debian (Linux)	x64, Arm64	10, 11, 12	11, 12	9 and earlier
Ubuntu (Linux)	x64, Arm64	20.04 LTS to 24.04 LTS	20.04 LTS, 22.04 LTS	23.10 and earlier non-LTS
Chrome (Web)	JavaScript, WebAssembly	Latest 2	119, 125	95 and earlier
Firefox (Web)	JavaScript	Latest 2	132	98 and earlier
Safari (Web)	JavaScript	15.6 and newer	15.6	15.5 and earlier
Edge (Web)	JavaScript, WebAssembly	Latest 2	119, 125	95 and earlier

参考链接

Flutter Web 调试问题: Assertion Failed on Text Input Click in Chrome (Flutter 3.27.0, Dart 3.6.0)

前置条件

Flutter 版本: 3.27.0 / 3.27.1
Dart 版本: 3.6.0
编译器: Android Studio Ladybug | 2024.2.1 Patch 3
操作系统: macOS Sequoia 15.2 (Apple M2) / Windows 11 专业版 23H2
浏览器: Chrome (131.0.6778.205)

问题描述

直接从 Flutter API 官方页面（Form Class Documentation）复制 Form 示例，并使用 Flutter 的 Web 调试模式运行。

尝试用鼠标单击文本输入时，遇到以下错误：

DartError: Assertion failed: org-dartlang-sdk:///lib/_engine/engine/pointer_binding/event_position_helper.dart:70:10
targetElement == domElement
"The targeted input element must be the active input element"
dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 288:3     throw_
dart-sdk/lib/_internal/js_dev_runtime/private/profile.dart 110:39               assertFailed
dart-sdk/lib/_internal/js_dev_runtime/private/profile.dart 110:39               _computeOffsetForInputs
lib/_engine/engine/pointer_binding/event_position_helper.dart 38:14             computeEventOffsetToTarget
lib/_engine/engine/pointer_binding.dart 1088:30                                 [_convertEventsToPointerData]
lib/_engine/engine/pointer_binding.dart 1016:9                                  <fn>
lib/_engine/engine/pointer_binding.dart 948:7                                   <fn>
lib/_engine/engine/pointer_binding.dart 541:9                                   loggedHandler
dart-sdk/lib/_internal/js_dev_runtime/patch/js_allow_interop_patch.dart 212:27  _callDartFunctionFast1

DartError: Assertion failed: org-dartlang-sdk:///lib/_engine/engine/pointer_binding/event_position_helper.dart:70:10

targetElement == domElement

"The targeted input element must be the active input element"

dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 288:3 throw_

dart-sdk/lib/_internal/js_dev_runtime/private/profile.dart 110:39 assertFailed

dart-sdk/lib/_internal/js_dev_runtime/private/profile.dart 110:39 _computeOffsetForInputs

lib/_engine/engine/pointer_binding/event_position_helper.dart 38:14 computeEventOffsetToTarget

lib/_engine/engine/pointer_binding.dart 1088:30 [_convertEventsToPointerData]

lib/_engine/engine/pointer_binding.dart 1016:9 <fn>

lib/_engine/engine/pointer_binding.dart 948:7 <fn>

lib/_engine/engine/pointer_binding.dart 541:9 loggedHandler

dart-sdk/lib/_internal/js_dev_runtime/patch/js_allow_interop_patch.dart 212:27 _callDartFunctionFast1

这个问题是 Flutter 3.27.0 / 3.27.1 的缺陷，官方已经在 Flutter 3.28 版本修复，后续升级到 Flutter 3.28 即可解决此问题。

目前（2024/12/23） master 通道已经修复这个问题，可以通过切换到 master 通道来解决：

$ flutter channel master

1	$ flutter channel master

参考链接

Could not find a command named "/data/Android/flutter/bin/cache/dart-sdk/bin/snapshots/frontend_server.dart.snapshot"

经过多次的 Flutter 版本升级，以前的老项目脚本在执行 flutter pub get 相关的命令时候报错如下：

$ /bin/bash /home/xxxx/xxx/build_runner.sh
Resolving dependencies in `/home/xxxx/xxxx`... 
Downloading packages... 
Got dependencies in `/home/xxxx/xxx`.
Building package executable... (3.1s)
Built custom_lint:custom_lint.
Analyzing...                           0.0s

No issues found!
Building package executable... (3.3s)
Built build_runner:build_runner.
[INFO] Generating build script completed, took 297ms
[INFO] Precompiling build script......Could not find a command named "/data/Android/flutter/bin/cache/dart-sdk/bin/snapshots/frontend_server.dart.snapshot".

Usage: dart <command|dart-file> [arguments]

Global options:
-v, --verbose               Show additional command output.
    --version               Print the Dart SDK version.
    --enable-analytics      Enable analytics.
    --disable-analytics     Disable analytics.
    --suppress-analytics    Disallow analytics for this `dart *` run without changing the analytics configuration.
-h, --help                  Print this usage information.

Available commands:
  analyze    Analyze Dart code in a directory.
  compile    Compile Dart to various formats.
  create     Create a new Dart project.
  devtools   Open DevTools (optionally connecting to an existing application).
  doc        Generate API documentation for Dart projects.
  fix        Apply automated fixes to Dart source code.
  format     Idiomatically format Dart source code.
  info       Show diagnostic information about the installed tooling.
  pub        Work with packages.
  run        Run a Dart program.
  test       Run tests for a project.

Run "dart help <command>" for more information about a command.

$ /bin/bash /home/xxxx/xxx/build_runner.sh

Resolving dependencies in `/home/xxxx/xxxx`...

Downloading packages...

Got dependencies in `/home/xxxx/xxx`.

Building package executable... (3.1s)

Built custom_lint:custom_lint.

Analyzing... 0.0s

No issues found!

Building package executable... (3.3s)

Built build_runner:build_runner.

[INFO] Generating build script completed, took 297ms

[INFO] Precompiling build script......Could not find a command named "/data/Android/flutter/bin/cache/dart-sdk/bin/snapshots/frontend_server.dart.snapshot".

Usage: dart <command|dart-file> [arguments]

Global options:

-v, --verbose Show additional command output.

--version Print the Dart SDK version.

--enable-analytics Enable analytics.

--disable-analytics Disable analytics.

--suppress-analytics Disallow analytics for this `dart *` run without changing the analytics configuration.

-h, --help Print this usage information.

Available commands:

analyze Analyze Dart code in a directory.

compile Compile Dart to various formats.

create Create a new Dart project.

devtools Open DevTools (optionally connecting to an existing application).

doc Generate API documentation for Dart projects.

fix Apply automated fixes to Dart source code.

format Idiomatically format Dart source code.

info Show diagnostic information about the installed tooling.

pub Work with packages.

run Run a Dart program.

test Run tests for a project.

Run "dart help <command>" for more information about a command.

解决方法为删除项目下的所有 pubspec.lock 文件即可。

参考链接

Flutter 错误：找不到名为 frontend_server.dart.snapshot 的命令

Caught error: Unsupported operation: Platform._operatingSystem

Flutter 代码运行在 Chrome 上的时候报错 “Caught error: Unsupported operation: Platform._operatingSystem”。

报错的原因是因为代码中使用了 Platform.isIOS、Platform.isAndroid 等函数判断系统类型，可惜的是，这些函数并不能在 Chrome 上运行。

修改方法就是自己封装一个自定义工具类，先使用 kIsWeb 排除一下浏览器。参考如下：

import 'dart:io';

import 'package:flutter/foundation.dart';

class PlatformKit {
  /// 是否是移动设备，如果系统是 Android 、iOS 则返回 true 否则返回 false
  static bool isMobile() {
    return (!kIsWeb) && (Platform.isAndroid || Platform.isIOS);
  }

  /// 是否是macOS，如果系统 macOS 则返回 true 否则返回 false
  static bool isMacOS() {
    return (!kIsWeb) && Platform.isMacOS;
  }
}

import 'dart:io';

import 'package:flutter/foundation.dart';

class PlatformKit {

/// 是否是移动设备，如果系统是 Android 、iOS 则返回 true 否则返回 false

static bool isMobile() {

return (!kIsWeb) && (Platform.isAndroid || Platform.isIOS);

}

/// 是否是macOS，如果系统 macOS 则返回 true 否则返回 false

static bool isMacOS() {

return (!kIsWeb) && Platform.isMacOS;

}

参考链接

Flutter Web 警告 Local variable for "serviceWorkerVersion" is deprecated

升级到 Flutter 3.22.0 之后，在 Chrome 上运行 Flutter Web 应用程序时收到以下警告：

Launching lib/main.dart on Chrome in debug mode...
Waiting for connection from debug service on Chrome...
Warning: In index.html:40: Local variable for "serviceWorkerVersion" is deprecated. Use "{{flutter_service_worker_version}}" template token instead. See https://docs.flutter.dev/platform-integration/web/initialization for more details.

Launching lib/main.dart on Chrome in debug mode...

Waiting for connection from debug service on Chrome...

Warning: In index.html:40: Local variable for "serviceWorkerVersion" is deprecated. Use "{{flutter_service_worker_version}}" template token instead. See https://docs.flutter.dev/platform-integration/web/initialization for more details.

这个警告的原因是，新版本的 Flutter Web 应用加载 service_worker.js 的方式发生了变化，原来的加载脚本被 {{flutter_bootstrap_js}} 替代。

调整为新的初始化代码即可解决此问题。

原始的代码如下：

<!DOCTYPE html>
<html>
<head>
  <!--
    If you are serving your web app in a path other than the root, change the
    href value below to reflect the base path you are serving from.

    The path provided below has to start and end with a slash "/" in order for
    it to work correctly.

    For more details:
    * https://developer.mozilla.org/en-US/docs/Web/HTML/Element/base

    This is a placeholder for base href that will be replaced by the value of
    the `--base-href` argument provided to `flutter build`.
  -->
  <base href="$FLUTTER_BASE_HREF">

  <meta charset="UTF-8">
  <meta content="IE=Edge" http-equiv="X-UA-Compatible">
  <meta name="description" content="A new Flutter project.">

  <!-- iOS meta tags & icons -->
  <meta name="apple-mobile-web-app-capable" content="yes">
  <meta name="apple-mobile-web-app-status-bar-style" content="black">
  <meta name="apple-mobile-web-app-title" content="xxxx">
  <link rel="apple-touch-icon" href="icons/Icon-192.png">

  <!-- Favicon -->
  <link rel="icon" type="image/png" href="favicon.png"/>

  <title>xxxx</title>
  <link rel="manifest" href="manifest.json">
</head>
<body>
  <!-- This script installs service_worker.js to provide PWA functionality to
       application. For more information, see:
       https://developers.google.com/web/fundamentals/primers/service-workers -->
  <script>
    var serviceWorkerVersion = null;
    var scriptLoaded = false;
    function loadMainDartJs() {
      if (scriptLoaded) {
        return;
      }
      scriptLoaded = true;
      var scriptTag = document.createElement('script');
      scriptTag.src = 'main.dart.js';
      scriptTag.type = 'application/javascript';
      document.body.append(scriptTag);
    }

    if ('serviceWorker' in navigator) {
      // Service workers are supported. Use them.
      window.addEventListener('load', function () {
        // Wait for registration to finish before dropping the <script> tag.
        // Otherwise, the browser will load the script multiple times,
        // potentially different versions.
        var serviceWorkerUrl = 'flutter_service_worker.js?v=' + serviceWorkerVersion;
        navigator.serviceWorker.register(serviceWorkerUrl)
          .then((reg) => {
            function waitForActivation(serviceWorker) {
              serviceWorker.addEventListener('statechange', () => {
                if (serviceWorker.state == 'activated') {
                  console.log('Installed new service worker.');
                  loadMainDartJs();
                }
              });
            }
            if (!reg.active && (reg.installing || reg.waiting)) {
              // No active web worker and we have installed or are installing
              // one for the first time. Simply wait for it to activate.
              waitForActivation(reg.installing || reg.waiting);
            } else if (!reg.active.scriptURL.endsWith(serviceWorkerVersion)) {
              // When the app updates the serviceWorkerVersion changes, so we
              // need to ask the service worker to update.
              console.log('New service worker available.');
              reg.update();
              waitForActivation(reg.installing);
            } else {
              // Existing service worker is still good.
              console.log('Loading app from service worker.');
              loadMainDartJs();
            }
          });

        // If service worker doesn't succeed in a reasonable amount of time,
        // fallback to plaint <script> tag.
        setTimeout(() => {
          if (!scriptLoaded) {
            console.warn(
              'Failed to load app from service worker. Falling back to plain <script> tag.',
            );
            loadMainDartJs();
          }
        }, 4000);
      });
    } else {
      // Service workers not supported. Just drop the <script> tag.
      loadMainDartJs();
    }
  </script>
</body>
</html>

100

101

102

103

104

<!DOCTYPE html>

<html>

<head>

<!--

If you are serving your web app in a path other than the root, change the

href value below to reflect the base path you are serving from.

The path provided below has to start and end with a slash "/" in order for

it to work correctly.

For more details:

* https://developer.mozilla.org/en-US/docs/Web/HTML/Element/base

This is a placeholder for base href that will be replaced by the value of

the `--base-href` argument provided to `flutter build`.

-->

</head>

<body>

<!-- This script installs service_worker.js to provide PWA functionality to

application. For more information, see:

https://developers.google.com/web/fundamentals/primers/service-workers -->

var serviceWorkerVersion = null;

var scriptLoaded = false;

function loadMainDartJs() {

if (scriptLoaded) {

return;

}

scriptLoaded = true;

var scriptTag = document.createElement('script');

scriptTag.src = 'main.dart.js';

scriptTag.type = 'application/javascript';

document.body.append(scriptTag);

}

if ('serviceWorker' in navigator) {

// Service workers are supported. Use them.

window.addEventListener('load', function () {

// Wait for registration to finish before dropping the <script> tag.

// Otherwise, the browser will load the script multiple times,

// potentially different versions.

var serviceWorkerUrl = 'flutter_service_worker.js?v=' + serviceWorkerVersion;

navigator.serviceWorker.register(serviceWorkerUrl)

.then((reg) => {

function waitForActivation(serviceWorker) {

serviceWorker.addEventListener('statechange', () => {

if (serviceWorker.state == 'activated') {

console.log('Installed new service worker.');

loadMainDartJs();

}

});

}

if (!reg.active && (reg.installing || reg.waiting)) {

// No active web worker and we have installed or are installing

// one for the first time. Simply wait for it to activate.

waitForActivation(reg.installing || reg.waiting);

} else if (!reg.active.scriptURL.endsWith(serviceWorkerVersion)) {

// When the app updates the serviceWorkerVersion changes, so we

// need to ask the service worker to update.

console.log('New service worker available.');

reg.update();

waitForActivation(reg.installing);

} else {

// Existing service worker is still good.

console.log('Loading app from service worker.');

loadMainDartJs();

}

});

// If service worker doesn't succeed in a reasonable amount of time,

// fallback to plaint <script> tag.

setTimeout(() => {

if (!scriptLoaded) {

console.warn(

'Failed to load app from service worker. Falling back to plain <script> tag.',

);

loadMainDartJs();

}

}, 4000);

});

} else {

// Service workers not supported. Just drop the <script> tag.

loadMainDartJs();

}

</script>

</body>

</html>

调整后的代码如下：

<!DOCTYPE html>
<html>
<head>
  <!--
    If you are serving your web app in a path other than the root, change the
    href value below to reflect the base path you are serving from.

    The path provided below has to start and end with a slash "/" in order for
    it to work correctly.

    For more details:
    * https://developer.mozilla.org/en-US/docs/Web/HTML/Element/base

    This is a placeholder for base href that will be replaced by the value of
    the `--base-href` argument provided to `flutter build`.
  -->
  <base href="$FLUTTER_BASE_HREF">

  <meta charset="UTF-8">
  <meta content="IE=Edge" http-equiv="X-UA-Compatible">
  <meta name="description" content="A new Flutter project.">

  <!-- iOS meta tags & icons -->
  <meta name="apple-mobile-web-app-capable" content="yes">
  <meta name="apple-mobile-web-app-status-bar-style" content="black">
  <meta name="apple-mobile-web-app-title" content="xxxx">
  <link rel="apple-touch-icon" href="icons/Icon-192.png">

  <!-- Favicon -->
  <link rel="icon" type="image/png" href="favicon.png"/>

  <title>xxxx</title>
  <link rel="manifest" href="manifest.json">
</head>
<body>
  <!-- This script installs service_worker.js to provide PWA functionality to
       application. For more information, see:
       https://developers.google.com/web/fundamentals/primers/service-workers -->
    <script>
      {{flutter_bootstrap_js}}
    </script>
</body>
</html>

<!DOCTYPE html>

<html>

<head>

<!--

If you are serving your web app in a path other than the root, change the

href value below to reflect the base path you are serving from.

The path provided below has to start and end with a slash "/" in order for

it to work correctly.

For more details:

* https://developer.mozilla.org/en-US/docs/Web/HTML/Element/base

This is a placeholder for base href that will be replaced by the value of

the `--base-href` argument provided to `flutter build`.

-->

</head>

<body>

<!-- This script installs service_worker.js to provide PWA functionality to

application. For more information, see:

https://developers.google.com/web/fundamentals/primers/service-workers -->

</script>

</body>

</html>

参考链接

Flutter error G5FE39F1E: Type 'UnmodifiableUint8ListView' not found

问题描述

原本在 macOS 开发的项目，现在 Windows 10 运行时报如下错误：

Building Windows application...
/C:/Users/Administrator/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/win32-5.5.0/lib/src/guid.dart(32,9): error G5FE39F1E: Type 'UnmodifiableUint8ListView' not found. [D:\Source\xxxx\build\windows\x64\flutter\flutter_assemble.vcxproj]
/C:/Users/Administrator/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/win32-5.5.0/lib/src/guid.dart(32,9): error G027421CC: 'UnmodifiableUint8ListView' isn't a type. [D:\Source\xxxx\build\windows\x64\flutter\flutter_assemble.vcxproj]
/C:/Users/Administrator/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/win32-5.5.0/lib/src/guid.dart(52,17): error G311314CC: Method not found: 'UnmodifiableUint8ListView'. [D:\Source\xxxx\build\windows\x64\flutter\flutter_assemble.vcxproj]
/C:/Users/Administrator/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/win32-5.5.0/lib/src/guid.dart(56,31): error G311314CC: Method not found: 'UnmodifiableUint8ListView'. [D:\Source\xxxx\build\windows\x64\flutter\flutter_assemble.vcxproj]
/C:/Users/Administrator/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/win32-5.5.0/lib/src/guid.dart(100,17): error G311314CC: Method not found: 'UnmodifiableUint8ListView'. [D:\Source\xxxx\build\windows\x64\flutter\flutter_assemble.vcxproj]
D:\Program Files\Microsoft Visual Studio\2022\Community\MSBuild\Microsoft\VC\v170\Microsoft.CppCommon.targets(254,5): error MSB8066: “D:\Source\xxxx\build\windows\x64\CMakeFiles\3280cb0897b7497e569be324d43ba4f0\flutter_windows.dll.rule;D:\Source\xxxx\build\windows\x64\CMakeFiles\7cbe39a26ff33b9ec6d721697d74fbd8\flutter_assemble.rule”的自定义生成已退出，代码为 1。 [D:\Source\xxxx\build\windows\x64\flutter\flutter_assemble.vcxproj]
Error: Build process failed.

Building Windows application...

/C:/Users/Administrator/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/win32-5.5.0/lib/src/guid.dart(32,9): error G5FE39F1E: Type 'UnmodifiableUint8ListView' not found. [D:\Source\xxxx\build\windows\x64\flutter\flutter_assemble.vcxproj]

/C:/Users/Administrator/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/win32-5.5.0/lib/src/guid.dart(32,9): error G027421CC: 'UnmodifiableUint8ListView' isn't a type. [D:\Source\xxxx\build\windows\x64\flutter\flutter_assemble.vcxproj]

/C:/Users/Administrator/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/win32-5.5.0/lib/src/guid.dart(52,17): error G311314CC: Method not found: 'UnmodifiableUint8ListView'. [D:\Source\xxxx\build\windows\x64\flutter\flutter_assemble.vcxproj]

/C:/Users/Administrator/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/win32-5.5.0/lib/src/guid.dart(56,31): error G311314CC: Method not found: 'UnmodifiableUint8ListView'. [D:\Source\xxxx\build\windows\x64\flutter\flutter_assemble.vcxproj]

/C:/Users/Administrator/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/win32-5.5.0/lib/src/guid.dart(100,17): error G311314CC: Method not found: 'UnmodifiableUint8ListView'. [D:\Source\xxxx\build\windows\x64\flutter\flutter_assemble.vcxproj]

D:\Program Files\Microsoft Visual Studio\2022\Community\MSBuild\Microsoft\VC\v170\Microsoft.CppCommon.targets(254,5): error MSB8066: “D:\Source\xxxx\build\windows\x64\CMakeFiles\3280cb0897b7497e569be324d43ba4f0\flutter_windows.dll.rule;D:\Source\xxxx\build\windows\x64\CMakeFiles\7cbe39a26ff33b9ec6d721697d74fbd8\flutter_assemble.rule”的自定义生成已退出，代码为 1。 [D:\Source\xxxx\build\windows\x64\flutter\flutter_assemble.vcxproj]

Error: Build process failed.

解决方法

$ flutter pub upgrade win32
 
$ flutter pub cache clean
 
$ flutter channel stable
 
$ flutter clean && flutter pub get
 
$ flutter pub upgrade

$ flutter pub upgrade win32

$ flutter pub cache clean

$ flutter channel stable

$ flutter clean && flutter pub get

$ flutter pub upgrade

参考链接

Flutter Error: Type ‘UnmodifiableUint8ListView‘ not found

Flutter调试 iOS 真机卡在启动页面，报错 “try setting IDEPreferLogStreaming=YES”

最近，Flutter 升级到最新版本之后，iOS 真机调试的时候持续卡住在启动页面。

Xcode 输出如下报错信息：

Logging Error: Failed to initialize logging system. Log messages may be missing. If this issue persists, try setting IDEPreferLogStreaming=YES in the active scheme actions environment variables.

1	Logging Error: Failed to initialize logging system. Log messages may be missing. If this issue persists, try setting IDEPreferLogStreaming=YES in the active scheme actions environment variables.

Flutter 系统信息如下：

$ flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.22.0, on macOS 14.5 23F79 darwin-arm64, locale zh-Hans-CN)
[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 15.3)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2023.3)
[✓] IntelliJ IDEA Ultimate Edition (version 2018.3.6)
[✓] IntelliJ IDEA Community Edition (version 2024.1)
[✓] VS Code (version 1.89.0)
[✓] Connected device (4 available)
[✓] Network resources

• No issues found!

$ flutter doctor

Doctor summary (to see all details, run flutter doctor -v):

[✓] Flutter (Channel stable, 3.22.0, on macOS 14.5 23F79 darwin-arm64, locale zh-Hans-CN)

[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)

[✓] Xcode - develop for iOS and macOS (Xcode 15.3)

[✓] Chrome - develop for the web

[✓] Android Studio (version 2023.3)

[✓] IntelliJ IDEA Ultimate Edition (version 2018.3.6)

[✓] IntelliJ IDEA Community Edition (version 2024.1)

[✓] VS Code (version 1.89.0)

[✓] Connected device (4 available)

[✓] Network resources

• No issues found!

继续阅读Flutter调试 iOS 真机卡在启动页面，报错 “try setting IDEPreferLogStreaming=YES”

make: *** No rule to make target `sqlite_cfg.h', needed by `.target_source'

前置条件

macOS Sonoma (14.4.1)
MacBook Pro 2023-Apple M2 Pro （4能效核、8性能核、32GB内存、2TB磁盘）
Homebrew (4.2.18 或更高版本)
Xcode Version 15.3 (15E204a)
DevEco Studio NEXT Developer Preview2 4.1.3.700

错误信息

源代码编译 sqlite3 ：

# https://github.com/clemensg/sqlite3pod
$ wget https://www.sqlite.org/2024/sqlite-src-3450100.zip

$ unzip sqlite-src-3450100.zip

$ cd sqlite-src-3450100

$ ./configure

$ make

# https://github.com/clemensg/sqlite3pod

$ wget https://www.sqlite.org/2024/sqlite-src-3450100.zip

$ unzip sqlite-src-3450100.zip

$ cd sqlite-src-3450100

$ ./configure

$ make

或者使用 pod 安装 sqlite3 报错：

$ pod try sqlite3
Updating spec repositories

Trying sqlite3
[!] /opt/homebrew/bin/bash -c 
set -e
cd sqlite-src-3450100
./configure
make sqlite3.c sqlite3.h sqlite3ext.h

checking build system type... arm-apple-darwin23.4.0
checking host system type... arm-apple-darwin23.4.0
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking for a sed that does not truncate output... /opt/homebrew/bin/gsed
checking for grep that handles long lines and -e... /opt/homebrew/bin/ggrep
checking for egrep... /opt/homebrew/bin/ggrep -E
checking for fgrep... /opt/homebrew/bin/ggrep -F
checking for ld used by gcc... /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld
checking if the linker (/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld) is GNU ld... no
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B
checking the name lister (/usr/bin/nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 786432
checking whether the shell understands some XSI constructs... yes
checking whether the shell understands "+="... yes
checking for /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld option to reload object files... -r
checking for objdump... objdump
checking how to recognize dependent libraries... pass_all
checking for ar... ar
checking for strip... strip
checking for ranlib... ranlib
checking command to parse /usr/bin/nm -B output from gcc object... ok
checking for dsymutil... dsymutil
checking for nmedit... nmedit
checking for lipo... lipo
checking for otool... otool
checking for otool64... no
checking for -single_module linker flag... no
checking for -exported_symbols_list linker flag... yes
checking how to run the C preprocessor... gcc -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for dlfcn.h... yes
checking for objdir... .libs
checking if gcc supports -fno-rtti -fno-exceptions... yes
checking for gcc option to produce PIC... -fno-common -DPIC
checking if gcc PIC flag -fno-common -DPIC works... yes
checking if gcc static flag -static works... no
checking if gcc supports -c -o file.o... yes
checking if gcc supports -c -o file.o... (cached) yes
checking whether the gcc linker (/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld) supports shared libraries... yes
checking dynamic linker characteristics... darwin23.4.0 dyld
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
checking for a BSD-compatible install... /opt/homebrew/bin/ginstall -c
checking for special C compiler options needed for large files... no
checking for _FILE_OFFSET_BITS value needed for large files... no
checking for int8_t... yes
checking for int16_t... yes
checking for int32_t... yes
checking for int64_t... yes
checking for intptr_t... yes
checking for uint8_t... yes
checking for uint16_t... yes
checking for uint32_t... yes
checking for uint64_t... yes
checking for uintptr_t... yes
checking for sys/types.h... (cached) yes
checking for stdlib.h... (cached) yes
checking for stdint.h... (cached) yes
checking for inttypes.h... (cached) yes
checking malloc.h usability... no
checking malloc.h presence... no
checking for malloc.h... no
checking for fdatasync... yes
checking for gmtime_r... yes
checking for isnan... yes
checking for localtime_r... yes
checking for localtime_s... no
checking for malloc_usable_size... no
checking for strchrnul... no
checking for usleep... yes
checking for utime... yes
checking for pread... yes
checking for pread64... no
checking for pwrite... yes
checking for pwrite64... no
checking for tclsh8.7... no
checking for tclsh8.6... tclsh8.6
configure: Version set to 3.45
configure: Release set to 3.45.1
checking for WASI SDK directory... no
checking whether to support threadsafe operation... yes
checking for library containing pthread_create... none required
checking for library containing pthread_mutexattr_init... none required
checking whether to support shared library linked as release mode or not... no
checking whether to use an in-ram database for temporary tables... no
checking if executables have the .exe suffix... unknown
checking for Tcl configuration... found /opt/homebrew/Cellar/tcl-tk/8.6.14/lib/tclConfig.sh
checking for existence of /opt/homebrew/Cellar/tcl-tk/8.6.14/lib/tclConfig.sh... loading
checking for library containing readline... -ledit
not using linenoise
checking for library containing fdatasync... none required
checking build type... release
checking zlib.h usability... yes
checking zlib.h presence... yes
checking for zlib.h... yes
checking for library containing deflate... -lz
checking for library containing dlopen... none required
checking whether to support math functions... yes
checking for library containing ceil... none required
checking whether to support JSON functions... yes
checking whether to support MEMSYS5... no
checking whether to support MEMSYS3... no
checking whether to support FTS3... no
checking whether to support FTS4... no
checking whether to support FTS5... no
checking whether to support LIMIT on UPDATE and DELETE statements... no
checking whether to support GEOPOLY... no
checking whether to support RTREE... no
checking whether to support SESSION... no
configure: creating ./config.status
config.status: creating Makefile
config.status: creating sqlite3.pc
config.status: creating sqlite_cfg.h
config.status: sqlite_cfg.h is unchanged
config.status: executing libtool commands
gcc  -g -O2 -o mkkeywordhash -DSQLITE_ENABLE_MATH_FUNCTIONS  /private/var/folders/z8/_cvsdvbd4x51vm4szw5xkw0w0000gn/T/CocoaPods/Try/sqlite3/sqlite-src-3450100/tool/mkkeywordhash.c
./mkkeywordhash >keywordhash.h
gcc  -g -O2 -o lemon /private/var/folders/z8/_cvsdvbd4x51vm4szw5xkw0w0000gn/T/CocoaPods/Try/sqlite3/sqlite-src-3450100/tool/lemon.c
cp /private/var/folders/z8/_cvsdvbd4x51vm4szw5xkw0w0000gn/T/CocoaPods/Try/sqlite3/sqlite-src-3450100/tool/lempar.c .
cp /private/var/folders/z8/_cvsdvbd4x51vm4szw5xkw0w0000gn/T/CocoaPods/Try/sqlite3/sqlite-src-3450100/src/parse.y .
./lemon -DSQLITE_ENABLE_MATH_FUNCTIONS  -S parse.y
sh /private/var/folders/z8/_cvsdvbd4x51vm4szw5xkw0w0000gn/T/CocoaPods/Try/sqlite3/sqlite-src-3450100/tool/cktclsh.sh 8.4 tclsh8.6
touch has_tclsh84
cat parse.h /private/var/folders/z8/_cvsdvbd4x51vm4szw5xkw0w0000gn/T/CocoaPods/Try/sqlite3/sqlite-src-3450100/src/vdbe.c | tclsh8.6 /private/var/folders/z8/_cvsdvbd4x51vm4szw5xkw0w0000gn/T/CocoaPods/Try/sqlite3/sqlite-src-3450100/tool/mkopcodeh.tcl >opcodes.h
tclsh8.6 /private/var/folders/z8/_cvsdvbd4x51vm4szw5xkw0w0000gn/T/CocoaPods/Try/sqlite3/sqlite-src-3450100/tool/mkopcodec.tcl opcodes.h >opcodes.c
make: *** No rule to make target `sqlite_cfg.h', needed by `.target_source'.  Stop.

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$ pod try sqlite3

Updating spec repositories

Trying sqlite3

[!] /opt/homebrew/bin/bash -c

set -e

cd sqlite-src-3450100

./configure

make sqlite3.c sqlite3.h sqlite3ext.h

checking build system type... arm-apple-darwin23.4.0

checking host system type... arm-apple-darwin23.4.0

checking for gcc... gcc

checking whether the C compiler works... yes

checking for C compiler default output file name... a.out

checking for suffix of executables...

checking whether we are cross compiling... no

checking for suffix of object files... o

checking whether we are using the GNU C compiler... yes

checking whether gcc accepts -g... yes

checking for gcc option to accept ISO C89... none needed

checking for a sed that does not truncate output... /opt/homebrew/bin/gsed

checking for grep that handles long lines and -e... /opt/homebrew/bin/ggrep

checking for egrep... /opt/homebrew/bin/ggrep -E

checking for fgrep... /opt/homebrew/bin/ggrep -F

checking for ld used by gcc... /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld

checking if the linker (/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld) is GNU ld... no

checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B

checking the name lister (/usr/bin/nm -B) interface... BSD nm

checking whether ln -s works... yes

checking the maximum length of command line arguments... 786432

checking whether the shell understands some XSI constructs... yes

checking whether the shell understands "+="... yes

checking for /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld option to reload object files... -r

checking for objdump... objdump

checking how to recognize dependent libraries... pass_all

checking for ar... ar

checking for strip... strip

checking for ranlib... ranlib

checking command to parse /usr/bin/nm -B output from gcc object... ok

checking for dsymutil... dsymutil

checking for nmedit... nmedit

checking for lipo... lipo

checking for otool... otool

checking for otool64... no

checking for -single_module linker flag... no

checking for -exported_symbols_list linker flag... yes

checking how to run the C preprocessor... gcc -E

checking for ANSI C header files... yes

checking for sys/types.h... yes

checking for sys/stat.h... yes

checking for stdlib.h... yes

checking for string.h... yes

checking for memory.h... yes

checking for strings.h... yes

checking for inttypes.h... yes

checking for stdint.h... yes

checking for unistd.h... yes

checking for dlfcn.h... yes

checking for objdir... .libs

checking if gcc supports -fno-rtti -fno-exceptions... yes

checking for gcc option to produce PIC... -fno-common -DPIC

checking if gcc PIC flag -fno-common -DPIC works... yes

checking if gcc static flag -static works... no

checking if gcc supports -c -o file.o... yes

checking if gcc supports -c -o file.o... (cached) yes

checking whether the gcc linker (/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld) supports shared libraries... yes

checking dynamic linker characteristics... darwin23.4.0 dyld

checking how to hardcode library paths into programs... immediate

checking whether stripping libraries is possible... yes

checking if libtool supports shared libraries... yes

checking whether to build shared libraries... yes

checking whether to build static libraries... yes

checking for a BSD-compatible install... /opt/homebrew/bin/ginstall -c

checking for special C compiler options needed for large files... no

checking for _FILE_OFFSET_BITS value needed for large files... no

checking for int8_t... yes

checking for int16_t... yes

checking for int32_t... yes

checking for int64_t... yes

checking for intptr_t... yes

checking for uint8_t... yes

checking for uint16_t... yes

checking for uint32_t... yes

checking for uint64_t... yes

checking for uintptr_t... yes

checking for sys/types.h... (cached) yes

checking for stdlib.h... (cached) yes

checking for stdint.h... (cached) yes

checking for inttypes.h... (cached) yes

checking malloc.h usability... no

checking malloc.h presence... no

checking for malloc.h... no

checking for fdatasync... yes

checking for gmtime_r... yes

checking for isnan... yes

checking for localtime_r... yes

checking for localtime_s... no

checking for malloc_usable_size... no

checking for strchrnul... no

checking for usleep... yes

checking for utime... yes

checking for pread... yes

checking for pread64... no

checking for pwrite... yes

checking for pwrite64... no

checking for tclsh8.7... no

checking for tclsh8.6... tclsh8.6

configure: Version set to 3.45

configure: Release set to 3.45.1

checking for WASI SDK directory... no

checking whether to support threadsafe operation... yes

checking for library containing pthread_create... none required

checking for library containing pthread_mutexattr_init... none required

checking whether to support shared library linked as release mode or not... no

checking whether to use an in-ram database for temporary tables... no

checking if executables have the .exe suffix... unknown

checking for Tcl configuration... found /opt/homebrew/Cellar/tcl-tk/8.6.14/lib/tclConfig.sh

checking for existence of /opt/homebrew/Cellar/tcl-tk/8.6.14/lib/tclConfig.sh... loading

checking for library containing readline... -ledit

not using linenoise

checking for library containing fdatasync... none required

checking build type... release

checking zlib.h usability... yes

checking zlib.h presence... yes

checking for zlib.h... yes

checking for library containing deflate... -lz

checking for library containing dlopen... none required

checking whether to support math functions... yes

checking for library containing ceil... none required

checking whether to support JSON functions... yes

checking whether to support MEMSYS5... no

checking whether to support MEMSYS3... no

checking whether to support FTS3... no

checking whether to support FTS4... no

checking whether to support FTS5... no

checking whether to support LIMIT on UPDATE and DELETE statements... no

checking whether to support GEOPOLY... no

checking whether to support RTREE... no

checking whether to support SESSION... no

configure: creating ./config.status

config.status: creating Makefile

config.status: creating sqlite3.pc

config.status: creating sqlite_cfg.h

config.status: sqlite_cfg.h is unchanged

config.status: executing libtool commands

gcc -g -O2 -o mkkeywordhash -DSQLITE_ENABLE_MATH_FUNCTIONS /private/var/folders/z8/_cvsdvbd4x51vm4szw5xkw0w0000gn/T/CocoaPods/Try/sqlite3/sqlite-src-3450100/tool/mkkeywordhash.c

./mkkeywordhash >keywordhash.h

gcc -g -O2 -o lemon /private/var/folders/z8/_cvsdvbd4x51vm4szw5xkw0w0000gn/T/CocoaPods/Try/sqlite3/sqlite-src-3450100/tool/lemon.c

cp /private/var/folders/z8/_cvsdvbd4x51vm4szw5xkw0w0000gn/T/CocoaPods/Try/sqlite3/sqlite-src-3450100/tool/lempar.c .

cp /private/var/folders/z8/_cvsdvbd4x51vm4szw5xkw0w0000gn/T/CocoaPods/Try/sqlite3/sqlite-src-3450100/src/parse.y .

./lemon -DSQLITE_ENABLE_MATH_FUNCTIONS -S parse.y

sh /private/var/folders/z8/_cvsdvbd4x51vm4szw5xkw0w0000gn/T/CocoaPods/Try/sqlite3/sqlite-src-3450100/tool/cktclsh.sh 8.4 tclsh8.6

touch has_tclsh84

cat parse.h /private/var/folders/z8/_cvsdvbd4x51vm4szw5xkw0w0000gn/T/CocoaPods/Try/sqlite3/sqlite-src-3450100/src/vdbe.c | tclsh8.6 /private/var/folders/z8/_cvsdvbd4x51vm4szw5xkw0w0000gn/T/CocoaPods/Try/sqlite3/sqlite-src-3450100/tool/mkopcodeh.tcl >opcodes.h

tclsh8.6 /private/var/folders/z8/_cvsdvbd4x51vm4szw5xkw0w0000gn/T/CocoaPods/Try/sqlite3/sqlite-src-3450100/tool/mkopcodec.tcl opcodes.h >opcodes.c

make: *** No rule to make target `sqlite_cfg.h', needed by `.target_source'. Stop.

观察源代码目录，也确实没有 sqlite_cfg.h 文件生成。

继续阅读make: *** No rule to make target `sqlite_cfg.h', needed by `.target_source'

Flutter: Xcode error “Unable to boot the Simulator“

使用 flutter、Android Studio ，通过iOS模拟器运行项目，一直一切正常。

某次重启后无法启动模拟器，报错信息如下：

 "Unable to boot the simulator".

1	"Unable to boot the simulator".

解决方法，亲测有效：

macOS 14.4.1以及更高版本：
进入 “系统设置”→“通用”→“存储空间”→“开发者” 删除 “XCode 缓存” 。

在 macOS 13 及更高版本上：
进入 “系统设置”→“常规”→“存储”→“开发人员”
删除“开发者缓存”

在 macOS 12 及更低版本上：
转到“关于本机”→“存储”→“管理”→“开发人员”

参考链接

Flutter: XCode error “Unable to boot the Simulator

为容器添加基于BoxDecoration的labelText (作为TextField)

TextField 有一个很好的方法来在它的 BoxDecoration 装饰上放置一个文本标签，如下：

通过以下方式：

TextField(
        onTap: onTap,
        controller: controller,
        decoration: InputDecoration(
          labelText: "XP",
          border: OutlineInputBorder(
            borderRadius: BorderRadius.circular(50.0),
          ),
        ));

TextField(

onTap: onTap,

controller: controller,

decoration: InputDecoration(

labelText: "XP",

border: OutlineInputBorder(

borderRadius: BorderRadius.circular(50.0),

));

有没有办法在 Container 的其他 BoxDecoration 上实现同样的效果？例如，我想指定标签"XP"：

        Container(
          decoration: BoxDecoration(
            borderRadius: BorderRadius.all(Radius.circular(5)),
            border: Border.all(color: color, width: 2.0),
            labelText: Text("XP"),   // No such attribute
          ),
          child: child,
        ),

Container(

decoration: BoxDecoration(

borderRadius: BorderRadius.all(Radius.circular(5)),

border: Border.all(color: color, width: 2.0),

labelText: Text("XP"), // No such attribute

child: child,

但是 Flutter 没有为 BoxDecoration 提供 labelText (仅存在于 InputDecoration )。

我们可以使用 InputDecorator 作为父对象来完成上述需求，如下：

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const Home(),
      debugShowCheckedModeBanner: false,
    );
  }
}

class Home extends StatefulWidget {
  const Home({super.key});

  @override
  State<Home> createState() => _HomeState();
}

class _HomeState extends State<Home> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Container(
          height: 100,
          width: 400,
          child: InputDecorator(
            decoration: InputDecoration(
                labelText: 'XP',
                border: OutlineInputBorder(
                  borderRadius: BorderRadius.circular(10),
                )),
            child: Text("Container Content"),
          ),
        ),
      ),
    );
  }
}

import 'package:flutter/material.dart';

void main() {

runApp(const MyApp());

}

class MyApp extends StatelessWidget {

const MyApp({super.key});

// This widget is the root of your application.

@override

Widget build(BuildContext context) {

return MaterialApp(

title: 'Flutter Demo',

theme: ThemeData(

primarySwatch: Colors.blue,

home: const Home(),

debugShowCheckedModeBanner: false,

);

}

class Home extends StatefulWidget {

const Home({super.key});

@override

State<Home> createState() => _HomeState();

}

class _HomeState extends State<Home> {

@override

Widget build(BuildContext context) {

return Scaffold(

body: Center(

child: Container(

height: 100,

width: 400,

child: InputDecorator(

decoration: InputDecoration(

labelText: 'XP',

border: OutlineInputBorder(

borderRadius: BorderRadius.circular(10),

)),

child: Text("Container Content"),

);

}

输出

2025 年 1 月
一	二	三	四	五	六	日
		1	2	3	4	5
6	7	8	9	10	11	12
13	14	15	16	17	18	19
20	21	22	23	24	25	26
27	28	29	30	31