Flutter运行或执行flutter pub get时出现原生资产相关错误求解决

错误信息 #

Macmohan-MacBook-Air facilify % flutter pub get 
Building flutter tool...
Resolving dependencies... (6.7s)
Downloading packages... 
Got dependencies.
../../packages/flutter_tools/lib/src/isolated/native_assets/native_assets.dart:48:10: Error: Type 'DryRunResult' not found.
  Future<DryRunResult> dryRun({
         ^^^^^^^^^^^^
../../packages/flutter_tools/lib/src/isolated/native_assets/native_assets.dart:127:10: Error: Type 'DryRunResult' not found.
  Future<DryRunResult> dryRun({
         ^^^^^^^^^^^^
../../packages/flutter_tools/lib/src/isolated/native_assets/native_assets.dart:754:37: Error: Type 'DryRunResult' not found.
void ensureNativeAssetsBuildSucceed(DryRunResult result) {
                                    ^^^^^^^^^^^^
../../packages/flutter_tools/lib/src/isolated/native_assets/native_assets.dart:123:26: Error: The getter 'packagesWithNativeAssets' isn't defined for the class 'PackageLayout'.
 - 'PackageLayout' is from 'package:native_assets_builder/src/package_layout/package_layout.dart' ('../../../../.pub-cache/hosted/pub.dev/native_assets_builder-0.7.0/lib/src/package_layout/package_layout.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'packagesWithNativeAssets'.
    return packageLayout.packagesWithNativeAssets;
                         ^^^^^^^^^^^^^^^^^^^^^^^^
../../packages/flutter_tools/lib/src/isolated/native_assets/native_assets.dart:137:25: Error: The method 'dryRun' isn't defined for the class 'NativeAssetsBuildRunner'.
 - 'NativeAssetsBuildRunner' is from 'package:native_assets_builder/src/build_runner/build_runner.dart' ('../../../../.pub-cache/hosted/pub.dev/native_assets_builder-0.7.0/lib/src/build_runner/build_runner.dart').
Try correcting the name to the name of an existing method, or defining a method named 'dryRun'.
    return _buildRunner.dryRun(
                        ^^^^^^
../../packages/flutter_tools/lib/src/isolated/native_assets/native_assets.dart:563:9: Error: 'DryRunResult' isn't a type.
  final DryRunResult dryRunResult = await buildRunner.dryRun(
        ^^^^^^^^^^^^
../../packages/flutter_tools/lib/src/isolated/native_assets/native_assets.dart:754:37: Error: 'DryRunResult' isn't a type.
void ensureNativeAssetsBuildSucceed(DryRunResult result) {
                                    ^^^^^^^^^^^^
../../packages/flutter_tools/lib/src/isolated/native_assets/android/native_assets.dart:53:9: Error: 'DryRunResult' isn't a type.
  final DryRunResult dryRunResult = await buildRunner.dryRun(
        ^^^^^^^^^^^^
../../packages/flutter_tools/lib/src/isolated/native_assets/ios/native_assets.dart:51:9: Error: 'DryRunResult' isn't a type.
  final DryRunResult dryRunResult = await buildRunner.dryRun(
        ^^^^^^^^^^^^
../../packages/flutter_tools/lib/src/isolated/native_assets/macos/native_assets.dart:55:9: Error: 'DryRunResult' isn't a type.
  final DryRunResult dryRunResult = await buildRunner.dryRun(\

当前设置 #

问题原因 #

核心原因是Flutter SDK版本与依赖的native_assets_builder包（版本0.7.0）不兼容：

• Flutter工具链代码中引用的DryRunResult类型、packagesWithNativeAssets属性、dryRun方法，在native_assets_builder:0.7.0中已被移除或重命名；
• 这种版本不匹配通常是pub缓存中残留了不兼容的依赖版本，或是使用的Flutter SDK版本与该依赖包的预期支持版本不一致导致的。

解决办法 #

1. 清理pub缓存并重新获取依赖 #

flutter pub cache clean
flutter pub get

2. 同步Flutter SDK到兼容版本 #

• 若使用稳定版SDK，切换到稳定通道并更新：

flutter channel stable
flutter upgrade

• 若项目依赖特定版本的Flutter，需确认该版本与native_assets_builder的兼容性，可查看Flutter官方发布日志或包的官方文档。

3. 重建Flutter工具链 #

手动清理Flutter缓存后重建工具：

• 删除Flutter SDK目录下的bin/cache文件夹；
• 运行flutter doctor，工具会自动重建所需组件；
• 再次执行flutter pub get。

4. 检查项目依赖配置 #

• 确认项目pubspec.yaml中没有直接依赖native_assets_builder，若有则删除该依赖（通常它是Flutter工具链的间接依赖，无需手动添加）；
• 若必须手动依赖，指定与当前Flutter SDK兼容的版本号。

内容的提问来源于stack exchange，提问作者M99Coder