Android Studio的配置ndk，jni的三种方法

gradle

在项目app下的build.gradle下面配置ndk:
在defaultConfig中插入ndk片段

ndk{            moduleName "testdemo1"             //生成的so名字            ldLibs "log","z","m"            abiFilters "armeabi","armeabi-v7a","x86"            //输出指定三种abi体系结构下的so库，目前可有可无。        } android {  // .. android settings ..  sourceSets.main {      jni.srcDirs 'src/main/source'  }}//重新定义源文件位置，sourceSets { main { jni.srcDirs = ['src/main/jni'] } }

cmake方法

把cmake.txt修改
添加自己源代码位置，如下，将add_library添加自己将要生成包名。添加源代码位置。target_link_libraries
add_library( # Sets the name of the library.
kuming2

         # Sets the library as a shared library.         SHARED         # Provides a relative path to your source file(s).         # Associated headers in the same location as their source         # file are automatically included.         src/main/jni/main.c )

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 )

target_link_libraries( # Specifies the target library.
kuming2

                   # Links the target library to the log library                   # included in the NDK.                   ${log-lib} )

相应源代码含义与相关配置，可参考下面两篇文章

代码解释非常靠谱
添加预编译库
然后在android{}最后添加如下语句，将CMakeLists.txt关联起来。
在模块app的局部build.gradle中，像之前一样添加好对应的语句：

defaultConfig{}中：externalNativeBuild {}ndk {    abiFilters 'armeabi-v7a'}

其中abiFilters的作用是，在生成.so库时，只生成对应结构的文件，以至于最后的.apk文件也只有对应架构的.so库。

然后在android{}中：

externalNativeBuild {    cmake {        path 'CMakeLists.txt'    }}sourceSets {    main {        jniLibs.srcDirs = ['../distribution/libs']    }}

gradle方法