AAR Example

Example of creation AAR with C++ *.so library.

Instructions for creating AAR:

• https://developer.android.com/studio/projects/android-library.html

Create AAR

On first run open FooLibrary project in Android Studio to initialize all local settings, then close this project.

Run build script:

> cd android-aar-simple
[android-aar-simple]> ./create-aar.sh
[android-aar-simple]> ls foo-debug.aar
foo-debug.aar

Script will run builds with two toolchain:

• android-ndk-r10e-api-21-arm64-v8a
• android-ndk-r10e-api-19-armeabi-v7a-neon-clang-libcxx

Libraries will be installed to:

• FooLibrary/foo/src/main/jniLibs/arm64-v8a
• FooLibrary/foo/src/main/jniLibs/armeabi-v7a

Sources:

• FooLibraryCpp/CMakeLists.txt - CMake code with C++ library
• FooLibraryCpp/foo.cpp - define 'foo()' function and Java export call
• FooLibrary/foo/src/main/java/com/example/foo/Foo.java - Java interface with "native" method

Use AAR

Open project android-aar-simple/UseFoo and follow instructions for adding AAR:

• File -> New -> New Module ... -> Import .JAR/.AAR Package find foo-debug.aar and load it
• In file android-aar-simple/UseFoo/app/build.gradle add line:

dependencies {
  compile project(":foo-debug")
}

• Sync project
• Build -> Make Project
• Run example on device