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,它会抱怨,如果我不包括他们在在依赖build.gradle文件和settings.gradle文件.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 ':'

---

尝试时gradlew clean build,App1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'.

15号线compile project(':..:library3')中library1/build.gradle的文件.

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App1文件夹运行gradlew clean :library1:build以验证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.