Add snippet below to the build.gradle of your main android library:
apply plugin: 'com.kezong.fat-aar'
Step 3: Embed dependencies
Declare embed for the dependencies you want to merge in build.gradle.
The usage is similar to implementation, like this:
dependencies {
implementation fileTree(dir: 'libs', include: '*.jar')
// java dependency
embed project(path: ':lib-java', configuration: 'default')
// aar dependency
embed project(path: ':lib-aar', configuration: 'default')
// aar dependency
embed project(path: ':lib-aar2', configuration: 'default')
// local full aar dependency, just build in flavor1
flavor1Embed project(path: ':lib-aar-local', configuration: 'default')
// local full aar dependency, just build in debug
debugEmbed(name: 'lib-aar-local2', ext: 'aar')
// remote jar dependency
embed 'com.google.guava:guava:20.0'// remote aar dependency
embed 'com.facebook.fresco:fresco:1.12.0'// don't want to embed in
implementation('androidx.appcompat:appcompat:1.2.0')
}
Transitive
Local Dependency
If you want to include local transitive dependencies in final artifact, you must add embed for transitive dependencies in your main library.
For example, mainLib depend on subLib1, subLib1 depend on subLib2, If you want include all dependencies in the final artifact, you must add embed for subLib1 and subLib2 in mainLib build.gradle
Remote Dependency
If you want to inlcude all of the remote transitive dependencies which are in POM file, you need change the transitive value to true in your build.gradle, like this:
fataar {
/** * If transitive is true, local jar module and remote library's dependencies will be embed. (local aar module does not support) * If transitive is false, just embed first level dependency * Default value is false * @since 1.3.0*/
transitive =true
}
If you change the transitive value to true,and want to ignore a dependency in its POM file, you can add exclude keywords, like this:
embed('com.facebook.fresco:fresco:1.11.0') {
// exclude all dependencies
transitive =false// exclude any group or module
exclude(group:'com.facebook.soloader', module:'soloader')
}
AAR is a file format for android library.
The file itself is a zip file that containing useful stuff in android.
See anatomy of an aar file here.
support list for now:
Flavors
AndroidManifest merge
Classes merge
Jar merge
Res merge
Assets merge
Jni libs merge
R.txt merge
R.class merge
DataBinding merge
Proguard merge
Kotlin module merge
Gradle Version Support
Version
Gradle Plugin
Gradle
1.0.1
3.1.0 - 3.2.1
4.4 - 6.0
1.1.6
3.1.0 - 3.4.1
4.4 - 6.0
1.1.10
3.0.0 - 3.4.1
4.1 - 6.0
1.2.6
3.0.0 - 3.5.0
4.1 - 6.0
1.2.8
3.0.0 - 3.5.9
4.1 - 6.8
1.2.11 - 1.2.14
3.0.0 - 3.6.9
4.1 - 6.8
1.2.15 - 1.2.16
3.0.0 - 4.0.2
4.1 - 6.8
1.2.17
3.0.0 - 4.0.2
4.9 - 6.8
1.2.18+
3.0.0 - 4.1.0
4.9 - 6.8
1.3.+
3.0.0 - 4.1.0
4.9 - 6.8
1.3.4 - 1.3.5
3.0.0 - 4.1.0
4.9+
1.3.6
3.0.0 - 4.2.0
4.9+
1.3.8
3.0.0+
4.9+
The following link which version of Gradle is required for each version of the Android Gradle plugin. For the best performance, you should use the latest possible version of both Gradle and the plugin.
Application cannot directly rely on embedded project: application cannot directly rely on your embedded project. It must rely on the AAR file compiled by your embedded project
For debugging convenience, you can use embed in the main library project when you choose to package aar. When you need to run the app directly, you can use implementation or api
Res merge conflicts. If the library res folder and embedded dependencies res have the same res Id(mostly string/app_name). A duplicate resources build exception will be thrown. To avoid res conflicts:
consider using a prefix to each res Id, both in library res and aar dependencies if possible.
Adding android.disableResourceValidation=true to gradle.properties can do a trick to skip the exception.
Proguard
If minifyEnabled is set to true, classes not referenced in the project will be filtered according to Proguard rules during compile, resulting in ClassNotFound during app compile.
Most AAR is SDK that provide interfaces. It is recommended that you carefully comb Proguard files and add keep rules.
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