雷神Android HelloWorld
地址http://blog.csdn.NET/leixiaohua1020/article/details/47008825
步骤
1,开启Android studio,新建项目,“Include C++ support”打钩,一直下一步,最后完成。
2,雷神工程下,编好的so库,拷贝至libs目录,如下。
3,雷神工程下,头文件,拷贝至main目录,如下。
4,CMakeLists.txt修改
4.1设置工程绝对路径 set(ProjectRoot E:/Android/hello)
4.2添加库
add_library( avcodec SHARED IMPORTED ) set_target_properties( # Specifies the target library. avcodec # Specifies the parameter you want to define. PROPERTIES IMPORTED_LOCATION # Provides the path to the library you want to import. ${ProjectRoot}/app/libs/jni/armeabi/libavcodec-56.so )
4.3添加头 include_directories( src/main/include/ )
4.4修改目标连接库
target_link_libraries( # Specifies the target library. native-lib avcodec avdevice avfilter avformat avutil postproc swresample swscale # Links the target library to the log library # included in the NDK. ${log-lib} )4.5完整CMakeList.txt
# 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) # 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). src/main/cpp/native-lib.cpp ) # 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. set(ProjectRoot E:/Android/hello) add_library( avcodec SHARED IMPORTED ) set_target_properties( # Specifies the target library. avcodec # Specifies the parameter you want to define. PROPERTIES IMPORTED_LOCATION # Provides the path to the library you want to import. ${ProjectRoot}/app/libs/jni/armeabi/libavcodec-56.so ) add_library( avdevice SHARED IMPORTED ) set_target_properties( # Specifies the target library. avdevice # Specifies the parameter you want to define. PROPERTIES IMPORTED_LOCATION # Provides the path to the library you want to import. ${ProjectRoot}/app/libs/jni/armeabi/libavdevice-56.so ) add_library( avfilter SHARED IMPORTED ) set_target_properties( # Specifies the target library. avfilter # Specifies the parameter you want to define. PROPERTIES IMPORTED_LOCATION # Provides the path to the library you want to import. ${ProjectRoot}/app/libs/jni/armeabi/libavfilter-5.so ) add_library( avformat SHARED IMPORTED ) set_target_properties( # Specifies the target library. avformat # Specifies the parameter you want to define. PROPERTIES IMPORTED_LOCATION # Provides the path to the library you want to import. ${ProjectRoot}/app/libs/jni/armeabi/libavformat-56.so ) add_library( avutil SHARED IMPORTED ) set_target_properties( # Specifies the target library. avutil # Specifies the parameter you want to define. PROPERTIES IMPORTED_LOCATION # Provides the path to the library you want to import. ${ProjectRoot}/app/libs/jni/armeabi/libavutil-54.so ) add_library( postproc SHARED IMPORTED ) set_target_properties( # Specifies the target library. postproc # Specifies the parameter you want to define. PROPERTIES IMPORTED_LOCATION # Provides the path to the library you want to import. ${ProjectRoot}/app/libs/jni/armeabi/libpostproc-53.so ) add_library( swresample SHARED IMPORTED ) set_target_properties( # Specifies the target library. swresample # Specifies the parameter you want to define. PROPERTIES IMPORTED_LOCATION # Provides the path to the library you want to import. ${ProjectRoot}/app/libs/jni/armeabi/libswresample-1.so ) add_library( swscale SHARED IMPORTED ) set_target_properties( # Specifies the target library. swscale # Specifies the parameter you want to define. PROPERTIES IMPORTED_LOCATION # Provides the path to the library you want to import. ${ProjectRoot}/app/libs/jni/armeabi/libswscale-3.so ) include_directories( src/main/include/ ) target_link_libraries( # Specifies the target library. native-lib avcodec avdevice avfilter avformat avutil postproc swresample swscale # Links the target library to the log library # included in the NDK. ${log-lib} )5 build.gradle修改
5.1 defaultConfig {}中添加
ndk { moduleName "avcodec" abiFilters 'armeabi' }5.2 android {}中添加
sourceSets { main { jniLibs.srcDirs = ['./libs/jni'] } }
参考文章
http://blog.youkuaiyun.com/mxw3755/article/details/56676923