找不到从这个列表调用哪个方法maven()：

Question

我目前正试图模仿(然后构建)和Ionic应用程序(w/角)的Android。我觉得有必要在开头说我不是一个Android开发者，这是我第一次不得不建立一个环境，所以我为任何“明显的”错误或遗漏的步骤道歉。

我无法通过这个错误(在运行ionic cordova emulate android --debug --consolelogs之后出现)：

BUILD FAILED

Total time: 0.794 secs
[11:12:25]  lint finished in 1.74 s 
Error: /path/to/app/platforms/android/gradlew: Command failed with exit code 1 Error output:
FAILURE: Build failed with an exception.

* Where:
Build file '/path/to/app/platforms/android/build.gradle' line: 24

* What went wrong:
A problem occurred evaluating root project 'android'.
> Could not find which method maven() to invoke from this list:
public abstract org.gradle.api.artifacts.repositories.MavenArtifactRepository org.gradle.api.artifacts.dsl.RepositoryHandler#maven(groovy.lang.Closure)
public abstract org.gradle.api.artifacts.repositories.MavenArtifactRepository org.gradle.api.artifacts.dsl.RepositoryHandler#maven(org.gradle.api.Action)

当我试图构建我的项目或同步Gradle：时，我在Android中得到了类似的消息

Could not find which method maven() to invoke from this list:
public abstract org.gradle.api.artifacts.repositories.MavenArtifactRepository org.gradle.api.artifacts.dsl.RepositoryHandler#maven(groovy.lang.Closure)
public abstract org.gradle.api.artifacts.repositories.MavenArtifactRepository org.gradle.api.artifacts.dsl.RepositoryHandler#maven(org.gradle.api.Action)
Open File

在我的build.gradle 文件中失败的行如下所示：

buildscript {
    repositories {
        maven ()        < HERE
        jcenter()
        google ()
    }

    // Switch the Android Gradle plugin version requirement depending on the
    // installed version of Gradle. This dependency is documented at
    // http://tools.android.com/tech-docs/new-build-system/version-compatibility
    // and https://issues.apache.org/jira/browse/CB-8143
dependencies {
        classpath 'com.android.tools.build:gradle:4.7'
    }
}

对于上下文，我有：：

下载了Android、JDK和SDK工具，以及(试图排除故障)通过自制软件安装Gradle和Maven。

将以下路径添加到我的.bash_profile中(并确认文件路径包含他们所说的操作，并提供了匹配的版本)：

export ANDROID_HOME=$HOME/Library/Android/sdk`
export JAVA_HOME=$(/usr/libexec/java_home)
export JRE_HOME=$JAVA_HOME/jre
export PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin

export M2_HOME=/usr/local/Cellar/maven/3.5.3/libexec
export M2=$M2_HOME/bin
export PATH=$PATH:$M2_HOME/bin

export PATH=$PATH:/opt/gradle/gradle-4.7/bin

通过CLI sdkmanager接受所有许可条款。

通过AVD管理器创建虚拟设备

运行ionic info将返回以下内容：

cli packages: (/Users/katesowles/.node/lib/node_modules)
    @ionic/cli-utils  : 1.19.2
    ionic (Ionic CLI) : 3.20.0
global packages:
    cordova (Cordova CLI) : 7.0.1 
local packages:
    @ionic/app-scripts : 1.3.0
    Cordova Platforms  : android 6.2.3 browser 4.1.0 ios 4.5.4
    Ionic Framework    : ionic-angular 3.0.1
System:
    Android SDK Tools : 26.1.1
    ios-deploy        : 1.9.2 
    Node              : v8.7.0
    npm               : 5.4.2 
    OS                : macOS High Sierra
    Xcode             : Xcode 9.3 Build version 9E145 
Environment Variables:
    ANDROID_HOME : /Users/katesowles/Library/Android/sdk
Misc:
    backend : pro

运行mvn --version返回

Apache Maven 3.5.3 (3383c37e1f9e9b3bc3df5050c29c8aff9f295297; 2018-02-24T11:49:05-08:00)
Maven home: /usr/local/Cellar/maven/3.5.3/libexec
Java version: 1.8.0_171, vendor: Oracle Corporation
Java home: /Library/Java/JavaVirtualMachines/jdk1.8.0_171.jdk/Contents/Home/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "mac os x", version: "10.13.4", arch: "x86_64", family: "mac"

运行gradle --version返回

------------------------------------------------------------
Gradle 4.7
------------------------------------------------------------

Build time:   2018-04-18 09:09:12 UTC
Revision:     b9a962bf70638332300e7f810689cb2febbd4a6c

Groovy:       2.4.12
Ant:          Apache Ant(TM) version 1.9.9 compiled on February 2 2017
JVM:          1.8.0_171 (Oracle Corporation 25.171-b11)
OS:           Mac OS X 10.13.4 x86_64

任何帮助，以找到一个方法，通过这个和一个完成的，成功的建设将是非常感谢！

Answer 1

之后

apply plugin: 'com.android.application'

您应该添加以下内容：

  repositories {
        mavenCentral()
        maven {
            url "https://repository-achartengine.forge.cloudbees.com/snapshot/"
        } //  some dependency like this.
    }

如果您有一个具有身份验证的maven，则可以使用：

repositories {
            mavenCentral()
            maven {
               credentials {
                   username xxx
                   password xxx
               }
               url    'http://mymaven/xxxx/repositories/releases/'
            }
}

这是重要的秩序。

注意:，您需要在构建脚本之外定义存储库。buildscript配置块只为构建脚本的类路径设置存储库和依赖项，而不设置应用程序。see this