问题描述
因此,我一直在研究JNI调用,以便可以与一些预先编写的C ++程序进行交互,我不知道任何C ++,但正在尝试学习一些基础知识.我一直在尝试对JNI方法之外的方法进行简单调用,但始终会收到以下错误:
So i have been looking into JNI calls so i can interact with some pre written C++ programs, i dont know any C++ but am trying to learn some basics. I have just been trying to do a simple call to a method outside my JNI method but always get the following error:
错误c3861'myMethod':找不到标识符
error c3861 'myMethod': identifier not found
#include <stdio.h>
#include <string.h>
#include "StringFuncs.h"
JNIEXPORT jstring JNICALL Java_StringFuncs_changeWord(JNIEnv *env, jobject obj, jstring inStr, jint inLen)
{
const char *inString;
inString = env->GetStringUTFChars(inStr, NULL);
char otherString[40];
strcpy_s(otherString,inString);
if(myMethod())
{
memset(otherString, '-', inLen);
}
jstring newString = env->NewStringUTF((const char*)otherString);
return newString;
}
bool myMethod()
{
return true;
}
int main()
{
return 0;
}
有智慧的话吗?
推荐答案
在调用它们之前,必须先声明您的方法.所以在您的标题类型中 bool myMethod();
You have to declare your methods before you call them. So in your header type bool myMethod();
或者您可以将代码移到_changeWord函数上方,然后将声明/定义放在其中.
Or you can move the code above your _changeWord function, then the declaration/definition is in one.
这篇关于使用JNI在C ++中进行方法调用?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!