JAVA Code
boolean b = invokeNativeFunction();
int i = invokeNativeFunction2();
C code
jboolean Java_com_any_dom_Eservice_invokeNativeFunction(JNIEnv* env, jobject obj) {
bool bb = 0;
...
return // how can return 'bb' at the end of the function?
}
jint Java_com_any_dom_Eservice_invokeNativeFunction2(JNIEnv* env, jobject obj) {
int rr = 0;
...
return // how can return 'rr' at the end of the function?
}
Is it possible that JNI function return integer or boolean? If yes, How I can do that?
Yes, just return the value directly.
JNIEXPORT jint JNICALL Java_com_example_demojni_Sample_intMethod(JNIEnv* env, jobject obj,
jint value) {
return value * value;
}
JNIEXPORT jboolean JNICALL Java_com_example_demojni_Sample_booleanMethod(JNIEnv* env,
jobject obj, jboolean unsignedChar) {
return !unsignedChar;
}
There is a map relation between Java primitive type and native type, reference here.
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