JNI jintArray参数错误

Question

java:

public int[] native getArray(int[] a);

---

c:

JNIEXPORT jintArray JNICALL 

 net_tq5_ArrayTest_getArray(JNIEnv *env, jobject obj, jintArray arr) {
return arr;
}

---

java:

int[] a = new int[]{1,2,3,4,5};
int[] b = getArray(a);
for(int i=0; i<a.lenght; i++){
   Log.i("ArrayTest: ", "" + b[i]);
}

---

The result will be:

 ArrayTest: 0
 ArrayTest: 0
 ArrayTest: 0
 ...

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Why ? Help!

Answer 1

Your c header for function is incorrect. Now it returns jint instead of jintArray. Try to regenerate the header and rebuild the library.