Build error android studio 3.1 [英] Build error android studio 3.1

问题描述

在将Android Studio更新到3.1之后，加载新的新模板项目时遇到错误。

I'm experiencing error while loading fresh new template project after updating Android Studio to 3.1.

尝试使用和不使用此选项，但没有用：

Tried with and without this option, but no use:

maven {
    url "https://maven.google.com"
}

在构建过程中，我看到以下消息：

during build, I'm seeing following messages:

Caused by: org.gradle.internal.resolve.ModuleVersionResolveException:
           Could not resolve com.android.tools.build:gradle:3.1.0.
<6 internal calls>
   ... 128 more
Caused by: org.gradle.api.resources.ResourceException:
           Could not get resource 'https://dl/google.com/dl/android/maven2/com/android/tools/build/gradle/3.1.0/gradle-3.1.0.pom' <21 internal calls>
   ... 133 more
Caused by: org.gradle.internal.resource.transport.http.HttpRequestException:
           Could not GET 'https://dl/google.com/dl/android/maven2/com/android/tools/build/gradle/3.1.0/gradle-3.1.0.pom'. <16 internal calls>
Caused by: org.apache.http.conn.HttpHostConnectException: Connect to dl.google.com:433 [dl.google.com/216.58.199.142] failed

build.gradle

apply plugin: 'com.android.application'

android {
  compileSdkVersion 27
  buildToolsVersion "27.0.3"
  defaultConfig {
    applicationId "com.example.am.myapplicationtest"
    minSdkVersion 19
    targetSdkVersion 27
    versionCode 1
    versionName "1.0"
    //testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
  }
  buildTypes {
    release {
      minifyEnabled false
      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
  }

参考屏幕截图：

Screenshots for reference:

渐变设置

推荐答案

这是网络问题

我认为您的问题是由错误的网络引起，原因是：

This is a network issue

I think your problem is caused by bad network, since:

Caused by: org.apache.http.conn.HttpHostConnectException:
Connect to dl.google.com:433 [dl.google.com/216.58.199.142] failed

我面对类似的问题，最后我发现根本原因是gradle的默认代理（不是Android Studio而是gradle！）

I face a similar problem, and at last I found the root cause is the default proxy of gradle(NOT for Android Studio but for gradle!)

我在中定义了自己的代理设置 gradle.properties ，但是当我在Android Studio中单击同步时，我的设置不适用，并导致如下错误：

I defined my own proxy settings in gradle.properties, but when I click sync in Android Studio, my settings does not apply and result in a error like this:

Error:Failed to resolve: com.android.support:appcompat-v7:27.0.1
Install Repository and sync project
Open File
Show in Project Structure dialog

解决方案

最后，我通过命令行构建应用程序并自行设置代理来解决问题，如下所示：

Solution

At last I solved my problem by build my application by command line and set proxy myself, like this:

gradlew -Dhttp.proxyHost=127.0.0.1 -Dhttp.proxyPort=3128 -Dhttps.proxyHost=127.0.0.1 -Dhttps.proxyPort=3129

从 Gradle代理配置中获取，感谢Guillaume Berche。

Get this from Gradle proxy configuration, Thanks to Guillaume Berche.

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