flutter卡在Running Gradle task 'assembleDebug'...

1、问题：用安卓模拟器打开flutter项目时候，一直卡在Running Gradle task 'assembleDebug'...

2、原因：这是因为android studio运行项目时需要请求部分资源，而请求外网资源，你懂的...

3、解决：解决方法:1、翻*墙 。2换源

我采用的方法是换阿里源

注意：public路径是http的，会报错，要用https
错误：maven { url 'http://maven.aliyun.com/nexus/content/groups/public' }
正确：maven { url 'https://maven.aliyun.com/nexus/content/groups/public' }

修改Flutter安装目录下的文件：flutter\packages\flutter_tools\gradle/flutter.gradle
repositories {
// google()
// mavenCentral()
maven { url 'https://maven.aliyun.com/repository/google' }
maven { url 'https://maven.aliyun.com/repository/jcenter' }
maven { url 'https://maven.aliyun.com/nexus/content/groups/public' }
}

class FlutterPlugin implements Plugin {
// private static final String DEFAULT_MAVEN_HOST = "https://storage.googleapis.com";
private static final String DEFAULT_MAVEN_HOST = "https://storage.flutter-io.cn";
...}

修改Flutter安装目录下的文件：flutter\packages\flutter_tools\gradle/resolve_dependencies.gradle
repositories {
// google()
// mavenCentral()
maven { url 'https://maven.aliyun.com/repository/google' }
maven { url 'https://maven.aliyun.com/repository/jcenter' }
maven { url 'https://maven.aliyun.com/nexus/content/groups/public' }
maven {
// url "$storageUrl/download.flutter.io"
url "https://storage.flutter-io.cn/download.flutter.io"
}
}

修改项目目录的文件：android\build.gradle
buildscript {
ext.kotlin_version = '1.6.10'
repositories {
// google()
// mavenCentral()
maven { url 'https://maven.aliyun.com/repository/google' }
maven { url 'https://maven.aliyun.com/repository/jcenter' }
maven { url 'https://maven.aliyun.com/nexus/content/groups/public' }
}

...

allprojects {
repositories {
// google()
// mavenCentral()
maven { url 'https://maven.aliyun.com/repository/google' }
maven { url 'https://maven.aliyun.com/repository/jcenter' }
maven { url 'https://maven.aliyun.com/nexus/content/groups/public' }
}
}