Android Gradle 将外部库和嵌套外部库添加到项目中
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20-12-2019 - |
题
如何向 Android 项目添加外部库和嵌套外部库?
我的项目结构(不允许更改)
- 应用/
- 应用1/
- 构建.gradle
- 设置.gradle
- 图书馆/
- 图书馆1/
- 构建等级
- 设置.gradle
- 图书馆2/
- 构建等级
- 设置.gradle
- 图书馆3/
- 构建等级
- 设置.gradle
- 图书馆4/
- 构建等级
- 设置.gradle
- 图书馆1/
- 应用1/
应用程序1
应用程序1/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不直接依赖 library3
或者 library4
, 但是,如果我不将它们包含在依赖项中,它会抱怨 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。
应用程序1/设置.gradle
include ':'
include '..:libraries:library1'
include '..:libraries:library2'
include '..:libraries:library3'
include '..:libraries:library4'
图书馆1
库1/build.gradle
buildscript {
...
}
apply plugin: 'android-library'
dependencies {
compile fileTree(dir: 'libs', include: '*.jar')
compile project(':..:library3')
compile project(':..:library4')
}
android {
...
}
库1/settings.gradle
include ':'
include '..:library3'
include '..:library4'
库2..4
库2..4/build.gradle
buildscript {
...
}
apply plugin: 'android-library'
dependencies {
compile fileTree(dir: 'libs', include: '*.jar')
}
android {
...
}
库2..4/settings.gradle
include ':'
当试图 gradlew clean build
在 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号线是 compile project(':..:library3')
在里面 library1/build.gradle
文件。
如何向 Android 项目添加外部库和嵌套外部库?
解决方案
在您的顶级 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,你不需要它们
然后在每个构建脚本中你只需要使用
compile project (':library1')
compile project (':library2')
etc....
如上所述,只需在根项目 (App1) 中使用单个 settings.gradle 文件。
然后从你的 App1 文件夹运行 gradlew clean :library1:build
验证library1是否正确构建。
至于App1抱怨缺少库3和4的问题,您确定应用程序中没有直接引用这些库的代码吗?或者在编译library1时找不到这些库。单独构建每个库以验证它们都构建正常。
其他提示
一个问题。您需要这个依赖树吗?
--- 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。为什么每个模块都有一个?该文件仅在根项目(如 Eclipse 工作区)中用于引用您的模块(App、Library 1、Library 2 等...)
这对你有帮助吗?
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