how to call java method with (int,int,String) parameters from c?

[MangeshHYD]

Hi,

I want to call a java method from c.

e.g postFB(int id,int achId, String desc) is the java method.

 

what I am doing is

jmethodID postOnFB_mthd;

postOnFB_mthd=(*env)->GetMethodID(env,fwkClass,

"postFB","(IILjava/lang/String;)V");

I tried with above  but its crashing. What I have observed is when we want to pass 2 int parameters ,singnature will be something like

postOnFB_mthd=(*env)->GetMethodID(env,fwkClass,"postFB","(II)V"); but dont know how it should be when there is int and String parameter.

 

any help is appreciated.

Thanks,

Mangesh Kadam

 

 

[Glenn Kasten]

JNI is not my area of expertise, but I think that StackOverflow

is a good resource for non-Android-specific questions such as this.

See http://stackoverflow.com/questions/tagged/jni

Also try reading the NDK sample code or a JNI tutorial.

[F.Stain]

Hi  mangesh,

Look here :

jmethodID m_test_mthod_id = m_jniEnv->GetMethodID( m_class, "test_method", "(Ljava/lang/String;)V" );

void call_test_method( string param )
{
if( setupEnvironment() )
{
jstring jStringParam = m_jniEnv->NewStringUTF( param.c_str() );
if( !jStringParam )
{
LOG_ERR( "failed to alloc param string in java." );
return;
};
m_jniEnv->CallVoidMethod( m_object, m_test_mthod_id, jStringParam );
m_jniEnv->DeleteLocalRef( jStringParam );
teardownEnvironment();
};
};

Ok, you need to send (int, int, String), you only need to send two your int's before third jobject link.

[MangeshHYD]

Hi Frank,

thanks for the reply. Its working now.

regards,

Mangesh

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