Android studio jni cmake 调用第三方so

1.引用第三方so

main下创建jniLibs并导入so

 

 

 配置makelist

#依赖的add库
add_library(addccc STATIC IMPORTED)  #添加预编译静态库，只需要告诉CMAKE导入项目即可

set_target_properties( # Specifies the target library.
        addccc
        # Specifies the parameter you want to define.
        PROPERTIES IMPORTED_LOCATION

        # Provides the path to the library you want to import.
        ${CMAKE_SOURCE_DIR}/../jniLibs/armeabi-v7a/libaddccc.so )

#加入库

target_link_libraries( # Specifies the target library.
                       native-lib
                       # Links the target library to the log library
                       # included in the NDK.
                       ${log-lib}
                       addccc   #加入
        )

引用库

static {
        System.loadLibrary("addccc");
        System.loadLibrary("native-lib");
    }

public native int add(int a,int b);

cpp调用/测试

//先声明一下so里的方法
extern int addsss(int a,int b);

extern "C"
JNIEXPORT jint JNICALL
Java_com_dyzx_test_MainActivity_add(JNIEnv *env, jobject thiz, jint a, jint b) {
    return addsss(a,b);
}

 

问题

1.More than one file was found with OS independent path 'lib/armeabi-v7a/libaddccc.so'. If you are using jniLibs and CMake IMPORTED targets,

app->build.gradle

android {
    
    ...
 
    // Fix: More than one file was found
    packagingOptions {
        pickFirst 'lib/armeabi-v7a/libaddccc.so'
    }
}

第二种 去掉这个

 

sourceSets.main {
        jniLibs.srcDirs = ['libs/']
    }

 

 

 

2.linux平台的so不能直接在Android 使用

3.