运行应用时报错“$flutterSdkpath\packages\flutter_tools\gradle\app_plugin_loader.gradle”

Question

我在运行应用程序时遇到问题。 我的 flutter 详细信息是：

Flutter 版本：1.12.13+hotfilx.9

Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, v1.12.13+hotfix.9, on Microsoft Windows [Version 10.0.17763.1098], locale en-IN)
[!] Android toolchain - develop for Android devices (Android SDK version 30.0.0-rc2)
    X Android license status unknown.
      Try re-installing or updating your Android SDK Manager.
      See https://developer.android.com/studio/#downloads or visit https://flutter.dev/setup/#android-setup for detailed instructions.[√] Android Studio (version 3.6)
[√] VS Code (version 1.44.2)
[√] Connected device (1 available)
! Doctor found issues in 1 category.

在 visual studio 中运行 flutter 时显示：

Launching lib\main.dart on CPH1859 in debug mode...

FAILURE: Build failed with an exception.

* Where:
Settings file 'project_name\android\settings.gradle' line: 15

* What went wrong:
A problem occurred evaluating settings 'android'.
> Could not read script '\flutter\packages\flutter_tools\gradle\app_plugin_loader.gradle' as it does not exist.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 2s
Gradle task assembleDebug failed with exit code 1
Exited (sigterm)

在此先感谢您对我的帮助。

Answer 1

在主通道上创建的 Flutter 项目将生成一个android/settings.gradle文件，该文件指向 Flutter 工具中的一个文件，该工具存在于1.18.0 -dev 中的 1.18.0-dev 中。

从 master 切换 -> stable "downgrades" Flutter 相对于该更改，并且文件不再存在。

您可以通过在稳定时重新生成android/settings.gradle来解决此问题：

$ rm android/settings.gradle
$ flutter create .

有关详细信息，请参阅GitHub 问题。

Answer 2

只需将当前设置.gradle 文件代码替换为您要运行的版本项目设置.gradle。 eg：其他版本项目：android>setting.gradle

此代码将是您当前的 flutter 版本，只需用旧的一个或其他项目替换您的设置。gradle

设置.gradle

include ':app' 

def flutterProjectRoot = rootProject.projectDir.parentFile.toPath()

def plugins = new Properties()
def pluginsFile = new File(flutterProjectRoot.toFile(), '.flutter-plugins')
if (pluginsFile.exists()) {
   pluginsFile.withReader('UTF-8') { reader -> plugins.load(reader) }
}

plugins.each { name, path ->
   def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile()
   include ":$name"
   project(":$name").projectDir = pluginDirectory
}

Answer 3

只需降级您使用的最近的库/包，您就可以了

Answer 4

将频道从stable更改为master对我有用。

查看频道：

flutter channel

要更改频道：

flutter channel <channel_name>

例如flutter channel master

Answer 5

JUST go 到路径 sdk flutter 路径

$flutterPath\packages\flutter_tools\gradle\app_plugin_loader.gradle

并确保文件 app_plugin_loader 在那里，如果没有从回收站恢复它或下载它