Android Gradle将外部库和嵌套外部库添加到项目中

Question

如何将外部库和嵌套外部库添加到android项目？

---

我的项目结构（不允许更改）

• 应用/
  • 应用1 /
    • 的build.gradle
    • settings.gradle
  • 库/
    • LIBRARY1 /
      • build.grade
      • settings.gradle
    • library2 /
      • build.grade
      • settings.gradle
    • library3 /
      • build.grade
      • settings.gradle
    • library4 /
      • build.grade
      • settings.gradle

---

APP1

应用1 /的build.gradle

buildscript {
    ...
}

apply plugin: 'android'

dependencies {
    compile fileTree(dir: 'libs', include: '*.jar')
    compile project(':..:libraries:library1')
    compile project(':..:libraries:library2')
    compile project(':..:libraries:library3')
    compile project(':..:libraries:library4')
}

android {
    ...
}

App1并不直接依赖于library3或library4 ，但是，如果我不将它们包含在build.gradle文件和settings.gradle文件的依赖项中，它会抱怨。 所以，我把它们包括在内只是为了阻止它抱怨。

应用1 / settings.gradle

include ':'
include '..:libraries:library1'
include '..:libraries:library2'
include '..:libraries:library3'
include '..:libraries:library4'

---

LIBRARY1

LIBRARY1 /的build.gradle

buildscript {
    ...
}

apply plugin: 'android-library'

dependencies {
    compile fileTree(dir: 'libs', include: '*.jar')
    compile project(':..:library3')
    compile project(':..:library4')
}

android {
    ...
}

LIBRARY1 / settings.gradle

include ':'
include '..:library3'
include '..:library4'

---

library2..4

library2..4 /的build.gradle

buildscript {
    ...
}

apply plugin: 'android-library'

dependencies {
    compile fileTree(dir: 'libs', include: '*.jar')
}

android {
    ...
}

library2..4 / settings.gradle

include ':'

---

当试图在App1上gradlew clean build ，我收到以下错误：

FAILURE: Build failed with an exception.

* Where:
Build file '/home/user/projects/branches/branch1/Apps/libraries/library1/build.gradle' line: 15

* What went wrong:
A problem occurred evaluating project ':..:library:library1'.
> Project with path ':..:library3' could not be found in project ':..:library:library1'.

第15行是compile project(':..:library3') library1/build.gradle文件中的compile project(':..:library3') 。

如何将外部库和嵌套外部库添加到android项目？

Answer 1

在顶级settings.gradle（App1 / settings.gradle）文件中为每个库执行类似的操作

include ':library1'   
include ':library2'   
include ':library3'   
include ':library4'   

project(':library1').projectDir = new File(rootProject.projectDir, '../libraries/library1')
project(':library2').projectDir = new File(rootProject.projectDir, '../libraries/library2')
project(':library3').projectDir = new File(rootProject.projectDir, '../libraries/library3')
project(':library4').projectDir = new File(rootProject.projectDir, '../libraries/library4')

删除其他settings.gradle文件，您不需要它们

然后在每个构建脚本中，您只需要使用

compile project (':library1')
compile project (':library2')
etc....

如上所述，只需在根项目（App1）中使用一个settings.gradle文件。

然后从你的App1文件夹运行gradlew clean :library1:build来验证library1是否正确构建。

至于关于App1抱怨缺少库3和4的问题，你确定应用程序中没有代码直接引用这些库，或者在编译library1时没有找到库。 单独构建每个库以验证它们都构建正常。

Answer 2

一个问题。 你需要这个依赖树吗？

--- App
   |--- Library 2
   |--- Library 1
       |--- Library 3
       |--- Library 4

如果是，您的应用程序不需要导入库3和4.这些依赖项可通过库1获得。

关于settings.gradle文件。 为什么每个模块中有一个？ 此文件仅用于根项目（如Eclipse工作区）以引用您的模块（App，Library 1，Library 2等...）

这对你有帮助吗？

Answer 3

我这样做是为了相对路径：

include '..:ambilWarna'
include '..:excel'
include '..:pdfjet'
include '..:commons'
include '..:volley'


include  ':odb2'
include  ':azure'

include ':carBase'
include ':fuelTrackerLib'
include ':comsourcecastlelogbook'