flutter android studio运行 gradle构建报错 Could not resolve all artifacts for configuration ':classpath'.

flutter 报错解决
解决方案 ：

找到你的flutter安装目录，比如我的是~/Library/flutter

进入~/Library/flutter/packages/flutter_tools/gradle

修改flutter.gradle， 在buildscript里的repositories的google()下面加上mavenCentral()， 再运行即可。如下所示

buildscript {
    repositories {
        google()
        mavenCentral() // add this line
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.1'
    }
}

报错信息如下：

* Error running Gradle:

ProcessException: Process "..\android\gradlew.bat" exited abnormally:

Starting a Gradle Daemon (subsequent builds will be faster)

FAILURE: Build failed with an exception.

* What went wrong:

A problem occurred configuring root project 'android'.

> Could not resolve all artifacts for configuration ':classpath'.

> Could not resolve com.google.auto.value:auto-value:1.5.2.

Required by:

project : > com.android.tools.build:gradle:3.2.1 > com.android.tools.build:bundletool:0.5.0

> Could not resolve com.google.auto.value:auto-value:1.5.2.

> Could not get resource 'https://jcenter.bintray.com/com/google/auto/value/auto-value/1.5.2/auto-value-1.5.2.pom'.

> Read timed out

> Could not resolve org.jdom:jdom2:2.0.6.

Required by:

project : > com.android.tools.build:gradle:3.2.1 > com.android.tools.build.jetifier:jetifier-processor:1.0.0-alpha10

> Skipped due to earlier error

> Could not resolve org.apache.commons:commons-compress:1.12.

Required by:

project : > com.android.tools.build:gradle:3.2.1 > com.android.tools.build:builder:3.2.1 > com.android.tools:sdklib:26.2.1

project : > com.android.tools.build:gradle:3.2.1 > com.android.tools.build:builder:3.2.1 > com.android.tools:sdklib:26.2.1 > com.android.tools:repository:26.2.1

> Skipped due to earlier error

> Could not resolve javax.inject:javax.inject:1.

Required by:

project : > com.android.tools.build:gradle:3.2.1 > com.android.tools.build:builder:3.2.1 > com.android.tools:sdk-common:26.2.1

> Skipped due to earlier error

> Could not resolve net.sf.kxml:kxml2:2.3.0.

Required by:

project : > com.android.tools.build:gradle:3.2.1 > com.android.tools.build:builder:3.2.1 > com.android.tools.build:manifest-merger:26.2.1

project : > com.android.tools.build:gradle:3.2.1 > com.android.tools.build:builder:3.2.1 > com.android.tools.ddms:ddmlib:26.2.1

project : > com.android.tools.build:gradle:3.2.1 > com.android.tools.build:builder:3.2.1 > com.android.tools:sdklib:26.2.1 > com.android.tools.layoutlib:layoutlib-api:26.2.1

> Skipped due to earlier error

> Could not resolve com.google.code.findbugs:jsr305:1.3.9.

Required by:

project : > com.android.tools.build:gradle:3.2.1 > com.android.tools.build:builder:3.2.1 > com.android.tools.build:apkzlib:3.2.1

project : > com.android.tools.build:gradle:3.2.1 > com.android.tools.analytics-library:shared:26.2.1 > com.google.guava:guava:23.0

> Skipped due to earlier error

> Could not resolve com.google.j2objc:j2objc-annotations:1.1.

Required by:

project : > com.android.tools.build:gradle:3.2.1 > com.android.tools.analytics-library:shared:26.2.1 > com.google.guava:guava:23.0

> Skipped due to earlier error

> Could not resolve org.codehaus.mojo:animal-sniffer-annotations:1.14.

Required by:

project : > com.android.tools.build:gradle:3.2.1 > com.android.tools.analytics-library:shared:26.2.1 > com.google.guava:guava:23.0

> Skipped due to earlier error

> Could not resolve commons-logging:commons-logging:1.2.

Required by:

project : > com.android.tools.build:gradle:3.2.1 > com.android.tools.analytics-library:crash:26.2.1 > org.apache.httpcomponents:httpclient:4.5.2

> Skipped due to earlier error

> Could not resolve commons-codec:commons-codec:1.9.

Required by:

project : > com.android.tools.build:gradle:3.2.1 > com.android.tools.analytics-library:crash:26.2.1 > org.apache.httpcomponents:httpclient:4.5.2

> Skipped due to earlier error

> Could not resolve org.jetbrains.kotlin:kotlin-stdlib-common:1.2.71.

Required by:

project : > com.android.tools.build:gradle:3.2.1 > org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.2.71 > org.jetbrains.kotlin:kotlin-stdlib:1.2.71

> Skipped due to earlier error

> Could not resolve org.jetbrains:annotations:13.0.

Required by:

project : > com.android.tools.build:gradle:3.2.1 > org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.2.71 > org.jetbrains.kotlin:kotlin-stdlib:1.2.71

project : > com.android.tools.build:gradle:3.2.1 > com.android.tools.build:builder:3.2.1 > com.android.tools:sdklib:26.2.1 > com.android.tools.layoutlib:layoutlib-api:26.2.1

> Skipped due to earlier error

> Could not resolve com.sun.activation:javax.activation:1.2.0.

Required by:

project : > com.android.tools.build:gradle:3.2.1 > com.android.tools.build:builder:3.2.1 > com.android.tools:sdklib:26.2.1 > com.android.tools:repository:26.2.1

> Skipped due to earlier error

> Could not resolve org.glassfish.jaxb:jaxb-runtime:2.2.11.

Required by:

project : > com.android.tools.build:gradle:3.2.1 > com.android.tools.build:builder:3.2.1 > com.android.tools:sdklib:26.2.1 > com.android.tools:repository:26.2.1

> Skipped due to earlier error

> Could not resolve com.google.jimfs:jimfs:1.1.

Required by:

project : > com.android.tools.build:gradle:3.2.1 > com.android.tools.build:builder:3.2.1 > com.android.tools:sdklib:26.2.1 > com.android.tools:repository:26.2.1

> Skipped due to earlier error

* 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 2m 12s

Command: C:\MyWorkCompany\Flutter\policies_manager\android\gradlew.bat app:properties

Finished with error: Please review your Gradle project setup in the android/ folder.