Android Studio 3.0：无法解决模块依赖

Question

我有一个主要项目和第二个项目（模块）。

将模块项目作为模块依赖项导入app project并尝试同步所有内容后，出现以下错误：

Unable to resolve dependency for ':app@debug/compileClasspath': Could not resolve project :module.
Could not resolve project :module.
Required by: project :app
Unable to find a matching configuration of project :module:
 - Configuration 'debugApiElements':
     - Required com.android.build.api.attributes.BuildTypeAttr 'debug' and found compatible value 'debug'.
     - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Aar' and found incompatible value 'Apk'.
     - Found com.android.build.gradle.internal.dependency.VariantAttr 'debug' but wasn't required.
     - Required org.gradle.api.attributes.Usage 'java-api' and found compatible value 'java-api'.
 - Configuration 'debugMetadataElements':
     - Required com.android.build.api.attributes.BuildTypeAttr 'debug' and found compatible value 'debug'.
     - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Aar' and found incompatible value 'Metadata'.
     - Found com.android.build.gradle.internal.dependency.VariantAttr 'debug' but wasn't required.
     - Required org.gradle.api.attributes.Usage 'java-api' but no value provided.
 - Configuration 'debugRuntimeElements':
     - Required com.android.build.api.attributes.BuildTypeAttr 'debug' and found compatible value 'debug'.
     - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Aar' and found incompatible value 'Apk'.
     - Found com.android.build.gradle.internal.dependency.VariantAttr 'debug' but wasn't required.
     - Required org.gradle.api.attributes.Usage 'java-api' and found incompatible value 'java-runtime'.
 - Configuration 'releaseApiElements':
     - Required com.android.build.api.attributes.BuildTypeAttr 'debug' and found incompatible value 'release'.
     - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Aar' and found incompatible value 'Apk'.
     - Found com.android.build.gradle.internal.dependency.VariantAttr 'release' but wasn't required.
     - Required org.gradle.api.attributes.Usage 'java-api' and found compatible value 'java-api'.
 - Configuration 'releaseMetadataElements':
     - Required com.android.build.api.attributes.BuildTypeAttr 'debug' and found incompatible value 'release'.
     - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Aar' and found incompatible value 'Metadata'.
     - Found com.android.build.gradle.internal.dependency.VariantAttr 'release' but wasn't required.
     - Required org.gradle.api.attributes.Usage 'java-api' but no value provided.
 - Configuration 'releaseRuntimeElements':
     - Required com.android.build.api.attributes.BuildTypeAttr 'debug' and found incompatible value 'release'.
     - Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Aar' and found incompatible value 'Apk'.
     - Found com.android.build.gradle.internal.dependency.VariantAttr 'release' but wasn't required.
     - Required org.gradle.api.attributes.Usage 'java-api' and found incompatible value 'java-runtime'.

我对主要app.gradle的依赖：

compile project(':module')

我发现如果我将其更改为以下内容：

compile project(path: ':module', configuration:'default')

然后项目同步并构建。

但是，在主项目类文件中，我无法从模块项目导入任何文件。

我已经花了几个小时寻找答案，但到目前为止我还没有找到任何有用的答案。甚至重新安装了Android Studio 3.0，但没有任何帮助。

Answer 1

解决了我的问题。

我创建的测试模块使用应用插件：'com.android.application'当它应该使用应用插件：'com.android.library'。

虽然在一个项目中可以有多个应用程序模块，但不能让应用程序模块依赖于其他应用程序模块。