Android Studio集成第三方库，封装jni接口。

我已经使用ndk独立工具链（standalone toolchain）编译了第三方库，libabc.so。需要在android studio 中封装jni接口，对.so库函数进行调用。

1，修改当前工程CMakeList.txt，添加依赖的库和头文件：

include_directories(${PROJECT_SOURCE_DIR}/libs/include)

target_link_libraries(# Specifies the target library.

        native-lib

        # Links the target library to the log library

# included in the NDK.

        ${log-lib}

${PROJECT_SOURCE_DIR}/libs/armeabi-v7a/libabc.so

${PROJECT_SOURCE_DIR}/libs/armeabi-v7a/libdependecy1.so

${PROJECT_SOURCE_DIR}/libs/armeabi-v7a/libdependecy2.so

${PROJECT_SOURCE_DIR}/libs/armeabi-v7a/libdependecy3.so

   ${PROJECT_SOURCE_DIR}/libs/armeabi-v7a/libdependecy4.so)

2，修改app的build.gradle文件，添加如下字段，依赖库文件夹和依赖库平台：

sourceSets{

main{

jniLibs.srcDirs = ['libs']

}

}

flavorDimensions'cpuArch'

productFlavors {

arm7 {

dimension'cpuArch'

        ndk {

abiFilter'armeabi-v7a'

        }

}

universal {

dimension'cpuArch'

        // include all default ABIs. with NDK-r16,  it is:

//  armeabi-v7a, arm64-v8a, x86, x86_64

    }

}

3，在app文件夹下新建libs文件夹，并将依赖库放入对应平台目录中，如下图所示：

4，建立java和cpp文件，交互数据，cpp中包含库的头文件，在cpp中能够直接调用库函数了。