Passing int variable from Java to C

Issue

I have this two codes Java: public native void savex(int x); C:

void Java_com_example_javatest_MainActivity_savex(jint x)
{
    FILE *fp;
    fp = fopen("/data/data/com.example.javatest/data.txt", "w");
    fprintf(fp, "%d\n", (int)x);
    fclose(fp);
}

When run the result is always having -1265282592 in data.txt. What's the problem here?

Solution

void Java_com_example_javatest_MainActivity_savex(jint x)

The function arguments must be:

void Java_com_example_javatest_MainActivity_savex(JNIEnv* env, jobject obj,jint x)

Answered By - JCWasmx86