1.如何制作so文件

参考https://blog.csdn.net/yangxuan0261/article/details/52420833

1.1 Android.mk

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)

LOCAL_MODULE     :=  NativeCode
LOCAL_C_INCLUDES := $(LOCAL_PATH)
LOCAL_SRC_FILES  := NaviteCode.cpp
LOCAL_LDLIBS     := -llog -landroid
LOCAL_CFLAGS    := -DANDROID_NDK

include $(BUILD_SHARED_LIBRARY)

1.2 Application.mk

APP_STL := gnustl_static
APP_CPPFLAGS := -frtti -std=c++11
APP_PLATFORM := android-19
APP_CFLAGS += -Wno-error=format-security
APP_BUILD_SCRIPT := Android.mk
APP_ABI := armeabi-v7a x86

1.3NaviteCode.cpp

    #include "NaviteCode.h"

    extern "C" {
        int MyAddFunc(int _a, int _b)
        {
            return _a + _b;
        }
    }

1.4NaviteCode.h

    #ifndef __NativeCode_H__
    #define __NativeCode_H__

    #if 0
    #define EXPORT_DLL __declspec(dllexport) //导出dll声明
    #else
    #define EXPORT_DLL 
    #endif

    extern "C" {
        EXPORT_DLL int MyAddFunc(int _a, int _b);
    }

    #endif

1.5 c文件编译

如果是c文件编译，1.3 1.4省略

新建NaviteCode.c

int MyAddFunc(int _a, int _b)
{
	return _a + _b;
}

同时Android.mk文件修改一下：LOCAL_SRC_FILES := NaviteCode.c

2.编译

cmd中cd到native目录下，运行命令编译
ndk-build NDK_PROJECT_PATH=. NDK_APPLICATION_MK=Application.mk

ndk-build NDK_PROJECT_PATH=. NDK_APPLICATION_MK=Application.mk

3.unity调用

复制编译出来的libs文件夹，粘贴到Unity目录Plugins/Android下面

调用代码，注意名称去掉lib前缀和扩展名，例如原so文件为“libNativeCode.so”，unity调用名称为"NativeCode"，

public class testDll : MonoBehaviour {

[DllImport("NativeCode")]
public static extern int MyAddFunc(int x, int y);

// Use this for initialization
void Start () {
int ret = MyAddFunc(200, 200);
Debug.LogFormat("--- ret:{0}", ret);
}
}

4.测试

在编辑器模式下引用不到，一定要打包apk，在真机或者模拟器上测试

5.完整工程

https://download.csdn.net/download/yhx956058885/12346779

原文链接：https://blog.csdn.net/yhx956058885/article/details/105654224