Flutter 开发运行前两步

Failed to send crash report due to a network error: SocketException: OS Error: 信号灯超时时间已到 , errno = 121, address = clients2.google.com, port = 55220

flutter run 时出现上面的错误

需要修改两个地方

build.gradle文件内修改成国内镜像

buildscript {
    repositories {
        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'}

    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.2.1'
    }
}

allprojects {
    repositories {
        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'}
    }
}

rootProject.buildDir = '../build'
subprojects {
    project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
    project.evaluationDependsOn(':app')
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

另一个文件需要下载好压缩包到本地然后应用路径修改为自己的路径

distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip

改为

distributionUrl=file:///D:/Android/gradle-4.10.2-all.zip

再次flutter run 正常