未找到本机方法 [英] Native method not found

问题描述

我有一个小的JNI文件，具有将char数组转换为字节数组的本地函数（所以我可以将其发送到我的C ++客户端）。

I have a small JNI file with a native function that converts a char array to a byte array (So i can send it to my C++ client).

定义如下：

JNIEXPORT jbyteArray JNICALL Java_com_example_comtesttcp_communicationmoduleTCPIP_ConvertString(
        JNIEnv * env, jobject,
        jcharArray Buffer)

包名（加载库的位置是：

The package name (where the library is loaded is:

package com.example.communicationmoduleTCPIP

而课堂上的本地语言如下：

And the native deffiniton in the class is as followd:

// Load helper functions library
static {
   System.loadLibrary("HelperFunctions");
}


  public native byte[] ConvertString(char[] Buffer);

但是当ConvertString函数被调用时，我会得到以下错误：

But when the ConvertString function is called then i get the folowing error:

01-13 21:07:21.890: W/dalvikvm(22611): No implementation found for native Lcom/example/communicationmoduleTCPIP/communicationmoduleTCPIP;.ConvertString:([C)[B
01-13 21:07:21.890: W/dalvikvm(22611): threadid=11: thread exiting with uncaught exception (group=0x412b52a0)
01-13 21:07:21.900: E/AndroidRuntime(22611): FATAL EXCEPTION: Thread-821
01-13 21:07:21.900: E/AndroidRuntime(22611): java.lang.UnsatisfiedLinkError: Native method not found: com.example.communicationmoduleTCPIP.communicationmoduleTCPIP.ConvertString:([C)[B
01-13 21:07:21.900: E/AndroidRuntime(22611):    at com.example.communicationmoduleTCPIP.communicationmoduleTCPIP.ConvertString(Native Method)
01-13 21:07:21.900: E/AndroidRuntime(22611):    at com.example.communicationmoduleTCPIP.communicationmoduleTCPIP.SendBuffer(communicationmoduleTCPIP.java:164)
01-13 21:07:21.900: E/AndroidRuntime(22611):    at com.example.communicationmoduleTCPIP.communicationmoduleTCPIP.RunServer(communicationmoduleTCPIP.java:107)
01-13 21:07:21.900: E/AndroidRuntime(22611):    at com.example.communicationmoduleTCPIP.communicationmoduleTCPIP.run(communicationmoduleTCPIP.java:368)
01-13 21:07:21.900: E/AndroidRuntime(22611):    at java.lang.Thread.run(Thread.java:856)

可能的问题是类（communicationmoduleTCPIP）是一个可运行的类？我没有运行在一个类中，并具有以下定义（当我评论本机功能时，服务器运行正常）

Could the problem be that the class (communicationmoduleTCPIP) is a runnable class? I't runs in a class and has the following definition (the server runs fine when i comment the native function)

public class communicationmoduleTCPIP extends communicationmodule implements Runnable

我已经在网上看了一下，看完一些帖子后，我觉得定义正确可以有人告诉我我做错了什么？任何建议都是受欢迎的。

I have looked around on the net and after reading some post i think definition right, can some one tell me what i'm doing wrong? Any suggestions are welcome.

推荐答案

本机方法名称应与类全名匹配： Java_com_example_communicationmoduleTCPIP_communicationmoduleTCPIP_ConvertString

the native method name should match the class full name: Java_com_example_communicationmoduleTCPIP_communicationmoduleTCPIP_ConvertString

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