react-native run-android，无法解析配置“：classpath”的所有工件

Question

我遵循React Native Getting Started 的说明，在“使用本机代码构建项目”选项卡中，适用于 Windows 和 Android。

这是 \AwesomeProject\android\build.gradle 的内容，之后我执行时出现错误：react-native run-android

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    ext {
        buildToolsVersion = "28.0.2"
        minSdkVersion = 16
        compileSdkVersion = 28
        targetSdkVersion = 27
        supportLibVersion = "28.0.0"
    }
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.1'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        mavenLocal()
        google()
        jcenter()
        maven {
            // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
            url "$rootDir/../node_modules/react-native/android"
        }
    }
}


task wrapper(type: Wrapper) {
    gradleVersion = '4.7'
    distributionUrl = distributionUrl.replace("bin", "all")
}

当我执行：react-native run-android 时，我得到以下错误输出：

D:\studio\study\reactnatv\AwesomeProject>react-native run-android
JS server already running.
Building and installing the app on the device (cd android && gradlew.bat installDebug)...

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring root project 'AwesomeProject'.
> Could not resolve all artifacts for configuration ':classpath'.
   > Could not find com.android.tools.build:gradle:3.0.1.
     Searched in the following locations:
         https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.0.1/gradle-3.0.1.pom
         https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/3.0.1/gradle-3.0.1.jar
         https://jcenter.bintray.com/com/android/tools/build/gradle/3.0.1/gradle-3.0.1.pom
         https://jcenter.bintray.com/com/android/tools/build/gradle/3.0.1/gradle-3.0.1.jar
     Required by:
         project :

* 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 3s
Could not install the app on the device, read the error above for details.
Make sure you have an Android emulator running or a device connected and have
set up your Android development environment:
https://facebook.github.io/react-native/docs/getting-started.html

Command failed: gradlew.bat installDebug

Error: Command failed: gradlew.bat installDebug
    at checkExecSyncError (child_process.js:616:11)
    at Object.execFileSync (child_process.js:634:13)
    at runOnAllDevices (D:\studio\study\reactnatv\AwesomeProject\node_modules\react-native\local-cli\runAndroid\runAndroid.js:299:19)
    at buildAndRun (D:\studio\study\reactnatv\AwesomeProject\node_modules\react-native\local-cli\runAndroid\runAndroid.js:135:12)
    at isPackagerRunning.then.result (D:\studio\study\reactnatv\AwesomeProject\node_modules\react-native\local-cli\runAndroid\runAndroid.js:65:12)
    at process._tickCallback (internal/process/next_tick.js:68:7)


D:\studio\study\reactnatv\AwesomeProject>

我检查了这个US sanctions solution，但没有成功。

我做错了什么？

Answer 1

你必须在你的项目中改变这一行：

dependencies {
classpath 'com.android.tools.build:gradle:3.3.2'
}

Answer 2

问题是由我的位置引起的。我不得不为此使用隧道。在那一刻，我在这里创建了一个 SSH 帐户 https://www.dynamicssh.com/create-ssh

1. 使用 SSH 凭据可以设置本地隧道。我用的是Linux，所以可以用这个命令设置隧道。

   $ ssh -D 1337 -q -C -N youruser@yourserver.something

更多细节在这里：https://ma.ttias.be/socks-proxy-linux-ssh-bypass-content-filters/

在 Windows 中，我认为可以使用名为 Bitvise SSH 的工具。

1. 在终端上为 localhost:1337 定义变量 https_proxy 和 http_proxy （端口是您在上一步中设置隧道的端口。）这是使用终端中的隧道。

2. 然后在设置了 https_proxy 和 http_proxy 的同一终端中运行“react-native run-android”。

感谢所有回答的人。

最好的问候。

Answer 3

尝试删除项目中的所有 node_modules 文件夹，然后重新构建。

我遇到了这个问题，每次我尝试在我的依赖项中指定它需要的 gradle 版本时，我都会收到一个单独的错误，告诉我我的 gradle 版本太低。这是由于node_modules 中的一些 android 库需要不同的 gradle 版本。从头开始重建 node_modules 应该会同步它们。

Answer 4

当我的互联网关闭时发生在我身上。值得检查一次。