启动虚拟机，执行flutter run 后，始终卡在Running Gradle task 'assembleDebug'...这一步，头发都卡白了
1.在项目下android文件下找到build.gradle文件，如下图所示修改
//修改的地方
maven { url 'https://maven.aliyun.com/repository/google' }
maven { url 'https://maven.aliyun.com/repository/jcenter' }
maven { url 'http://maven.aliyun.com/nexus/content/groups/public' }
2.在项目中android\gradle\wrapper找到gradle-wrapper.properties文件，修改distributionUrl
distributionUrl=file\:/D\:/softWare/gradle/gradle-5.4.1-all.zip
注意，你安装的gradle版本必须和你项目配置的flutter版本想匹配，附上插件版本所需的 Gradle 版本链接 （https://www.cnblogs.com/sendling/p/13452173.html），选择安装你适配的版本！
3.在flutter sdk安装的路径 flutter\packages\flutter_tools\gradle\flutter.gradle文件中修改如下几处地方
repositories {
// google()
// jcenter()
//修改的地方
maven { url 'https://maven.aliyun.com/repository/google' }
maven { url 'https://maven.aliyun.com/repository/jcenter' }
maven { url 'http://maven.aliyun.com/nexus/content/groups/public' }
}
//修改的地方
private static final String MAVEN_REPO = "http://download.flutter.io";
project.rootProject.allprojects {
repositories {
maven {
url repository
//修改的地方
//添加
maven { url 'https://maven.aliyun.com/repository/google' }
maven { url 'https://maven.aliyun.com/repository/jcenter' }
maven { url 'http://maven.aliyun.com/nexus/content/groups/public' }
}
}
}
修改这些地方后，执行flutter clean后重新运行flutter run，发现已经运行成功，
虚拟机内也启动了flutter的demo画面，至此，大功告成~~~
