JNI Method not found
- by Select Call
I have been receiving this error for my JNI code while I tried find the method ,using GetMethodID, my Java method is in an Interface.
Here is my interface
public interface printReader
{
public printImg readerPrint(String selectedName) throws Exception;
}
Native code
WprintImgIMPL.h
class WprintImgIMPL: public IWprintReader {
public:
WprintImgIMPL(JNIEnv *env, jobject obj);
~WprintImgIMPL(void);
virtual WprintImg readerPrint(char* readerName) ;
.....
.....
private:
JNIEnv *m_Env;
jobject m_jObj;
}
WprintImgIMPL.cpp
WprintImg WprintImgIMPL::readerPrint(char* readerName) {
jclass cls = m_Env->GetObjectClass (m_jObj);
jmethodID mid = m_Env->GetMethodID (cls, "readerPrint", "(Ljava/lang/String;)Lcom/site/name/printImg;");
.......
.......
}
Java code
public class printReaderIMPL implements printReader {
static final String DEBUG_TAG = "";
android.net.wifi.WifiManager.MulticastLock lock;
Context _context;
public printReaderIMPL (Context context) {
_context = context;
}
@Override
public printImg readerPrint(String selectedName) throws Exception {
Log.e(DEBUG_TAG, "readerPrint");
}
}
Constructor/destructor
WprintImgIMPL(JNIEnv *env, jobject obj){
m_Env = env;
m_jobj = env->NewGlobalRef(obj);
}
~WprintImgIMPL(void) {
m_Env->DeleteGlobalRef(m_jobj);
}
Error: GetMethodID: method not found: Lcom/site/name/NativeCode;.printImg:(Ljava/lang/String;)Lcom/site/name/printImg;
Signature are checked twice , after failure I generated again using Javap tool .
Thank you if you can input /comment and help in fixing this bug.
