传递库依赖关系在应用程序中找不到 [英] Transitive Library dependencies are not found in the application

问题描述

假设我有一个包含OkHttp等第三方库的库模块。当我将这个库包含在我的应用程序中时，我无法使用这些第三方库。我阅读了以下文章第1条，
第2条
并尝试

。<.c $ c>编译项目（'：library-name'）

{将作为模块的.aar文件导入myproject之后}

2.我将.aar文件包含在libs文件夹中，并添加了以下依赖项：

uild.gradle（项目级别）

  allprojects {
 repositories {
 flatDir {
 dirs'libs'
} 
} 
} 
  

build.gradle（应用程序级别）

  compile fileTree（dir：'libs'，include：['* .jar']）
 compile（'com.myapp.package：library-name ：1.0.0@aar'）{
 transitive = true 
} 
  

3。类似于第二，但在

build.gradle（应用程序级别）

  compile fileTree（dir：'libs '，包括：['* .jar']）
 compile（名称：'library-name'，ext：'aar'）{
 transitive = true 
} 
  

但是，我仍然无法使用库中存在的传递库。

  java.lang.NoClassDefFoundError：失败的解决方法：Lcom / squareup / okhttp / MediaType; 
  

有人可以帮忙吗？

编辑：<
以下是我的库的build.gradle

  compile fileTree（dir：'libs'，include： ['* .jar']）
 testCompile'junit：junit：4.12'
 compile'c​​om.android.support:appcompat-v7:23.1.1'
 
 compile' org.apache.httpcomponents：httpcore：4.4.4'
 compile'org.apache.httpcomponents：httpclient：4.5.1'
 
 compile'c​​om.squareup.okhttp：okhttp：2.6。 0'
 compile'petrov.kristiyan.colorpicker：colorpicker-library：1.0.3'
 
 
 testCompile'junit：junit：4.12'
 
 testCompile'org.mockito：mockito-core：1.10.19'
 
 testCompile'org.hamcrest：hamcrest-library：1.1'
 
编译文件（'notificationlog-0.1。 0.jar'）
  

我可以使用 notificationlog 在我的应用程序中，这是我的库中的依赖项，但我无法使用 okhttp 和 colorpicker

解决方案

aar 文件 doesn' t包含嵌套（或传递）依赖关系，并且没有描述库使用的依赖关系的pom文件。

这意味着，如果您要使用 flatDir repo 您必须在您的项目中指定依赖关系。

没有意义：
$ b $ pre $ compile（name：'library-name'，ext：'aar'）{
transitive = true
}


因为aar没有描述依赖关系的pom文件， gradle无法添加任何依赖项，因为它无法知道它们。

Say I have a library module which contains some 3rd party libraries like OkHttp. When I include this library in my application I was unable to use these 3rd party libraries. I read the following articles Article 1, Article 2 and tried
1. compile project(':library-name')
{after importing the .aar file(of library) as a module into myproject}
2. I included the .aar file in libs folder and added following dependencies

build.gradle(project level)

allprojects {
repositories {
    flatDir {
        dirs 'libs'
    }
}
}

build.gradle(application level)

compile fileTree(dir: 'libs', include: ['*.jar'])
compile ('com.myapp.package:library-name:1.0.0@aar'){
transitive=true
}

3. similar to 2nd but in
build.gradle(application level)

compile fileTree(dir: 'libs', include: ['*.jar'])
compile (name:'library-name', ext:'aar'){
transitive=true
}

But, still I was unable to use the transitive libraries which are present in my library. I am getting following exception.

java.lang.NoClassDefFoundError: Failed resolution of: Lcom/squareup/okhttp/MediaType;

Can someone help

EDIT:
The following is build.gradle of my library

compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.1.1'

compile 'org.apache.httpcomponents:httpcore:4.4.4'
compile 'org.apache.httpcomponents:httpclient:4.5.1'

compile 'com.squareup.okhttp:okhttp:2.6.0'
compile 'petrov.kristiyan.colorpicker:colorpicker-library:1.0.3'


testCompile 'junit:junit:4.12'

testCompile 'org.mockito:mockito-core:1.10.19'

testCompile 'org.hamcrest:hamcrest-library:1.1'

compile files('notificationlog-0.1.0.jar')

I was able to use the notificationlog in my application which was a dependency in my library, but I was unable to use okhttp and colorpicker

解决方案

The aar file doesn't contain the nested (or transitive) dependencies and doesn't have a pom file which describes the dependencies used by the library.

It means that, if you are importing a aar file using a flatDir repo you have to specify the dependencies also in your project.

It doesn't make sense:

compile (name:'library-name', ext:'aar'){
    transitive=true
}

because the aar is without a pom file which describes the dependencies, then gradle is unable to add any dependencies because it can't know them.

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