Flutter新手第一个坑：Could not find com.android.tools.lint:lint-gradle:26.1.1.

解决方法1：修改build.gradle,注释掉jcenter()，google()。使用阿里的镜像。原因是jcenter google库无法访问到导致的问题。虽然我有万能的爬墙工具，开启全局代理依然被我们伟大的发改委墙掉了！

buildscript {

repositories {
    //google()
    //jcenter()
    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:3.1.2'
}

}

allprojects {

repositories {
    //google()
    //jcenter()
    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' }
}

}

Macintosh HD⁩ ▸ ⁨用户⁩ ▸ ⁨rabbit⁩ ▸ ⁨资源库⁩ ▸ ⁨Flutter⁩ ▸ ⁨packages⁩ ▸ ⁨flutter_tools⁩ ▸ ⁨gradle⁩
找到下 flutter.gradle文件 找如如下内容替换成和我一样的 把jcenter注释掉。

​buildscript {

repositories {
    //jcenter()
    //maven {
    //    url 'https://dl.google.com/dl/android/maven2'
    //}
    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:3.1.2'
}

}
至此从新运行，解决掉问题。