Question

I got a Java method that get a String and returns boolean.

I call it from JNI like this:

jmethodID function2ID = env->GetMethodID(
                    activityClass,
                    "MyFuncName",
                    "(Ljava/lang/String;)B");
        if ( function2ID == null )
            LOG("Could not find MyFuncName Function")

            jboolean IsAutoPlay =    env->CallBooleanMethod(
                    obj,
                    function2ID,
                    env->NewStringUTF(name));

I get Fatal Signal 11, Any idea what’s wrong in the syntax?

Answer 1

My Java signature was to return Boolean instead of boolean.

Also

jmethodID function2ID = env->GetMethodID(
                    activityClass,
                    "MyFuncName",
                    "(Ljava/lang/String;)B");

needs to be Z instead of B.

jmethodID function2ID = env->GetMethodID(
                    activityClass,
                    "MyFuncName",
                    "(Ljava/lang/String;)Z");