jni获取函数名

封装一下获取的函数名

///声明
jmethodID GetMethodID_(int line,
                       JNIEnv* jni,
                       jclass c,
                       const char* name,
                       const char* signature);

///获取函数名 ,传入行数,JNIEnv ,jclass ,函数名,函数签名.
jmethodID GetMethodID_(int line,JNIEnv* jni, jclass c,
                      const char* name,const char* signature) {
 // jni 调用GetMethodID 获取函数名
  jmethodID m = jni->GetMethodID(c, name, signature);
 // 主要是检查是否有异常.
  CHECK_EXCEPTION(jni) << "error during GetMethodID: " << name << ", "
                       << signature << " line: " << line;
  CHECK(m) << name << ", " << signature << " line: " << line;
  return m;
}

///获取静态方法名 传入行数,JNIEnv ,jclass ,函数名,函数签名.
jmethodID GetStaticMethodID_(int line,
                             JNIEnv* jni,
                             jclass c,
                             const char* name,
                             const char* signature) {
  jmethodID m = jni->GetStaticMethodID(c, name, signature);
  CHECK_EXCEPTION(jni) << "error during GetStaticMethodID: " << name << ", "
                       << signature << " line: " << line;
  CHECK(m) << name << ", " << signature << " line: " << line;
  return m;
}

///获取方法名 (最终使用这个函数)
#define _GET_METHOD_ID(_jni_, _c_, _name_, _signature_) \
  GetMethodID_(__LINE__, _jni_, _c_, _name_, _signature_)

• 使用方式

 jmethodID methodID =
      _GET_METHOD_ID(env, jnicb.jcbCls, "OnRobotGetMultiDataRsp","(JLjava/lang/Object;)V");