android - In JNI, setting and getting elements from jobjectArray -

jstring ret_str = (*env)->newstringutf(env, output); (*env)->setobjectarrayelement(env,result,1,ret_str);  jint bit_count = 5; (*env)->setobjectarrayelement(env,result,0,(jobject)bit_count); 

the last line gives error fatal error.

here output char* , result jobjectarray.

all need add strings,ints,floats etc... jobjectarray , want return jobjectarray.

when adding jstring their's no error other primitive type throwing error.

you cannot cast jint jobject in java. c has no idea how promote data type. need find java.lang.integer class in jni , construct jint argument integer jobject.

here code, go , review documentation , preform needed error checking.

jclass integer_class = (*env)->findclass(env, "java/lang/integer"); jmethodid = integer_init = (*env)->getmethodid(                 env,                 integer_class,                 "<init>",                 "(i)v"); integer_object = (*env)->newobject(                 env,                 integer_class,                 integer_init,                 bit_count);