set(BOOST_INCLUDE_DIR ${INCLUDE_DIR}/boost/include)

set(Boost_USE_STATIC_LIBS OFF)
set(Boost_USE_MULTITHREADED ON)

include_directories(${INCLUDE_DIR})

set(BOOST_MODULES
    boost_filesystem
    boost_date_time
    boost_system
    boost_thread
    boost_chrono
    boost_atomic
    boost_timer
)

foreach (lib ${BOOST_MODULES})
    target_link_libraries(first-lib ${LIBS_DIR}/boost/${ANDROID_ABI}/lib${lib}.a)
    target_link_libraries(next-lib ${LIBS_DIR}/boost/${ANDROID_ABI}/lib${lib}.a)
endforeach()

public class Recognition {
    public int terminalState;
    public float x1,x2,x3,x4,y1,y2,y3,y4;
    public BlobPosition[] blobPositions;
}

externalNativeBuild {
            cmake {
                cppFlags ""
                arguments "-DANDROID_PLATFORM=android-22"
            }
        }

"If you're using CMake via Gradle, add the following to your build.gradle:

externalNativeBuild {
    cmake {
        cppFlags ""
        arguments "-DANDROID_STL=c++_shared"
    }
}"

        externalNativeBuild {
            cmake {
                cppFlags "-frtti -fexceptions -std=gnu++11"
                arguments '-DANDROID_TOOLCHAIN=clang', '-DCMAKE_BUILD_TYPE=Release'
                abiFilters 'x86', 'x86_64', 'armeabi-v7a', 'arm64-v8a'
            }
        }