"无法解决所有依赖关系"与第三方库(来自Maven Central)

Question

在我的中build.gradle,我定义了一些第三方库,所有这些库都可以在Maven Central中使用.

dependencies {    
    compile 'com.google.code.gson:gson:2.2.4'
    compile 'com.google.guava:guava:15.0'
    compile 'com.netflix.rxjava:rxjava-core:0.14.2'
    compile 'com.netflix.rxjava:rxjava-android:0.14.2'
}

(我们也有libs(对于Eclipse用户)手动管理的jar ,我过去常常使用这些用于Gradle构建compile fileTree(dir: 'libs', include: '*.jar'),但是我正试图从那里转向更简单的自动化依赖管理.)

无论如何,由于某种原因,获取deps失败:

* What went wrong:
A problem occurred configuring root project 'MyApp-Android'.
> Could not resolve all dependencies for configuration ':_debugCompile'.
   > Could not find com.google.code.gson:gson:2.2.4.
     Required by:
         :MyApp-Android:unspecified
   > Could not find com.google.guava:guava:15.0.
     Required by:
         :MyApp-Android:unspecified
   > Could not find com.netflix.rxjava:rxjava-core:0.14.2.
     Required by:
         :MyApp-Android:unspecified
   > Could not find com.netflix.rxjava:rxjava-android:0.14.2.
     Required by:
         :MyApp-Android:unspecified

我究竟做错了什么？

我想知道我是否应该

repositories {
    mavenCentral()
}

...也在构建文件的顶层(不仅仅是内部buildscript),但添加它没有帮助.

解析度

我太仓促了; 这确实有助于"无法解决依赖关系".之后我得到了编译错误,但这是因为事实上代码(和in libs)中有一些比dependendies上面的四个条目更多的依赖.

所以在我的情况下,我必须添加顶级repositories指向Maven Central 以及我们实际拥有的一些额外的依赖:

compile 'com.squareup.okhttp:okhttp:1.2.1'   
compile 'com.android.support:support-v4:13.0.0'
compile 'com.android.support:support-v13:13.0.0'

---

(原始,破碎)满build.gradle:

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:0.7.1'
    }
}
apply plugin: 'android'

dependencies {
    // compile fileTree(dir: 'libs', include: '*.jar')
    compile 'com.google.code.gson:gson:2.2.4'
    compile 'com.google.guava:guava:15.0'
    compile 'com.netflix.rxjava:rxjava-core:0.14.2'
    compile 'com.netflix.rxjava:rxjava-android:0.14.2'
}

android {
    compileSdkVersion 19
    buildToolsVersion "19"

    defaultConfig {
        minSdkVersion 14
        targetSdkVersion 19
    }

    sourceSets {
        main {
            manifest.srcFile 'AndroidManifest.xml'
            java.srcDirs = ['src']
            resources.srcDirs = ['src']
            aidl.srcDirs = ['src']
            renderscript.srcDirs = ['src']
            res.srcDirs = ['res']
            assets.srcDirs = ['assets']
        }

        // Move the tests to tests/java, tests/res, etc...
        instrumentTest.setRoot('tests')

        // Move the build types to build-types/<type>
        // For instance, build-types/debug/java, build-types/debug/AndroidManifest.xml, ...
        // This moves them out of them default location under src/<type>/... which would
        // conflict with src/ being used by the main source set.
        // Adding new build types or product flavors should be accompanied
        // by a similar customization.
        debug.setRoot('build-types/debug')
        release.setRoot('build-types/release')
    }

}

Answer 1

确实你需要添加一个

repositories {
    mavenCentral()
}

在您的顶层build.gradle指定搜索依赖项的位置.