Golang开发动态库的实现

public class TestJni {

  static {
    System.loadLibrary("KylimTest");
  }

  public static native String getMsg();

}

javah -jni 包名.类名

/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class com_kylim_nativetest_TestJni */

#ifndef _Included_com_kylim_nativetest_TestJni
#define _Included_com_kylim_nativetest_TestJni
#ifdef __cplusplus
extern "C" {
#endif
/*
 * Class:   com_kylim_nativetest_TestJni
 * Method:  getMsg
 * Signature: (I)Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_com_kylim_nativetest_TestJni_getMsg
 (JNIEnv *, jclass);

#ifdef __cplusplus
}
#endif
#endif

JNIEXPORT jstring JNICALL Java_com_kylim_nativetest_TestJni_getMsg
 (JNIEnv *, jclass);

#include "com_kylim_nativetest_TestJni.h"

JNIEXPORT jstring JNICALL Java_com_kylim_nativetest_TestJni_getMsg
    (JNIEnv *env, jclass cls){

  jstring result = env->NewStringUTF("结果是");
  return result;
}

#固定写法
LOCAL_PATH:=$(call my-dir)
#固定写法
include $(CLEAR_VARS)
#生成so名称
LOCAL_MODULE := KylimTest
LOCAL_SRC_FILES := testone.cpp
#固定写法
include $(BUILD_SHARED_LIBRARY)

# 选择不同的 ABI，多个使用空格作为分隔符，全部是all
# APP_ABI := armeabi armeabi-v7a
APP_ABI := armeabi-v7a

# 指定要使用的运行时
APP_STL := c++_static

android {
   defaultConfig {
        ndkBuild {
        //指定 Application.mk 的路径
        arguments "NDK_APPLICATION_MK:=src/main/jni/Application.mk"
        //指定生成哪些平台的 so 文件
        abiFilters "armeabi-v7a"
        //cFlags 和 cppFlags 是用来设置环境变量的, 一般不需要动
        cFlags "-DTEST_C_FLAG1", "-DTEST_C_FLAG2"
        cppFlags "-DTEST_CPP_FLAG2", "-DTEST_CPP_FLAG2"
      }
   }

  sourceSets { main { jni.srcDirs = ['src/main/jni'] } }

  externalNativeBuild {
    ndkBuild {
      path file('src/main/jni/Android.mk')
    }
  }

}

go get -d golang.org/x/mobile/example/basic

gomobile init

gomobile bind -help

gomobile bind -o app/hello.aar -target=android golang.org/x/mobile/example/bind/hello

gomobile bind -o 输入文件名.aar -target=android