1 下载Android Studio
https://developer.android.com/studio/archive?hl=zh-cn
2 安装Android Studio
安装完成,下载SDK NDK LLIB Cmake
FIle-Setting
3 开始建立工程使用
4 配置
CMakeLists.txt
1 包括三个三方库test1.so test.so gnustl_shared.so
2 加入opencv的支持
# For more information about using CMake with Android Studio, read the # documentation: https://d.android.com/studio/projects/add-native-code.html # Sets the minimum version of CMake required to build the native library. cmake_minimum_required(VERSION 3.4.1) #step1 ##################### OpenCV 环境 ############################ #参考https://www.jianshu.com/p/6e16c0429044 #设置OpenCV-android-sdk路径 set(OpenCV_STATIC ON) set(OpenCV_DIR C:/software/opencv-4.0.1-android-sdk/OpenCV-android-sdk/sdk/native/jni ) find_package(OpenCV REQUIRED ) if(OpenCV_FOUND) include_directories(${OpenCV_INCLUDE_DIRS}) message(STATUS "OpenCV library status:") message(STATUS " version: ${OpenCV_VERSION}") message(STATUS " libraries: ${OpenCV_LIBS}") message(STATUS " include path: ${OpenCV_INCLUDE_DIRS}") else(OpenCV_FOUND) message(FATAL_ERROR "OpenCV library not found") endif(OpenCV_FOUND) #set(OpenCV_STATIC ON) #set( OpenCV_DIR C:/software/opencv-3.4.5-android-sdk/OpenCV-android-sdk/sdk/native/jni ) #find_package (OpenCV REQUIRED) # #target_link_libraries(native-lib ${OpenCV_LIBS}) #step2 设置so库路径 #参考 https://blog.csdn.net/carryWorld/article/details/75026171 include_directories(${CMAKE_SOURCE_DIR}/src/main/cpp/include) set(jnilibs "${CMAKE_SOURCE_DIR}/src/main/jniLibs") #set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${jnilibs}/${ANDROID_ABI}) # ###################### 项目原生模块 ########################### # Creates and names a library, sets it as either STATIC # or SHARED, and provides the relative paths to its source code. # You can define multiple libraries, and CMake builds them for you. # Gradle automatically packages shared libraries with your APK. add_library( # Sets the name of the library. native-lib # Sets the library as a shared library. SHARED # Provides a relative path to your source file(s). native-lib.cpp) #step3 加入共享库 add_library(test1 SHARED IMPORTED) add_library(test2 SHARED IMPORTED) add_library(gnustl_shared SHARED IMPORTED) # Searches for a specified prebuilt library and stores the path as a # variable. Because CMake includes system libraries in the search path by # default, you only need to specify the name of the public NDK library # you want to add. CMake verifies that the library exists before # completing its build. find_library( # Sets the name of the path variable. log-lib # Specifies the name of the NDK library that # you want CMake to locate. log) # Specifies libraries CMake should link to your target library. You # can link multiple libraries, such as libraries you define in this # build script, prebuilt third-party libraries, or system libraries. message($CMAKE_SOURCE_DIR) set_target_properties(test1 PROPERTIES IMPORTED_LOCATION ${CMAKE_SOURCE_DIR}/../jniLibs/${ANDROID_ABI}/libtest1.so) set_target_properties(test2 PROPERTIES IMPORTED_LOCATION ${CMAKE_SOURCE_DIR}/../jniLibs/${ANDROID_ABI}/libtest2.so) set_target_properties(gnustl_shared PROPERTIES IMPORTED_LOCATION ${CMAKE_SOURCE_DIR}/../jniLibs/${ANDROID_ABI}/libgnustl_shared.so) target_link_libraries( # Specifies the target library. native-lib ${OpenCV_LIBS} jnigraphics log test1 test2 gnustl_shared # Links the target library to the log library # included in the NDK. ${log-lib})
5 开始编译